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1
Blanc, A., and J. Daguzan. "Young cuttlefish Sepia officinalis (Mollusca: Sepiidae) in the Morbihan Bay (south Brittany, France): accessory prey of predators." Journal of the Marine Biological Association of the United Kingdom 79, no. 6 (December 1999): 1133–34. http://dx.doi.org/10.1017/s0025315499001435.
Анотація:
Morbihan Bay, France, is an important spawning area and nursery grounds for young cuttlefish. The eggs and the young cuttlefish are subjected to predatory species of fish. These were identified by analysing the stomach contents of 26 species and two species of cephalopods. Five fish species were found to be predators of young cuttlefish. The Balistes carolinensis feeds on the eggs, and Dicentrarchus labrax, Labrus bergylta, Spondyliosoma cantharus, and Conger conger eat young cuttlefish, from 8 mm (hatching cuttlefish) to 61 mm in mantle length (cuttlefish about 4-months old).
2
Darmaillacq, Anne-Sophie, and Daniel Osorio. "Cuttlefish." Current Biology 27, no. 20 (October 2017): R1093—R1095. http://dx.doi.org/10.1016/j.cub.2017.08.070.
3
Herpandi, I. Widiastuti, Wulandari, and M. R. Aldino. "Utilization of Cuttlefish Bone as The Alternative Source of Heterogenic Alkali Catalyst." IOP Conference Series: Earth and Environmental Science 995, no. 1 (April 1, 2022): 012058. http://dx.doi.org/10.1088/1755-1315/995/1/012058.
Анотація:
Abstract This research aims to determine characteristic of heterogeneous alkali catalyst which produced from cuttlefish bone. The catalyst was made by calcination process at 800 °C for 4 hours. The characterization was done by XRD (X-ray diffractometer) and SEM-EDS (Scanning Electron Microscopy-Energy Dispersive X-ray). XRD result showed heterogeneous alkali catalyst from cuttlefish bone have high crystallinity with lime mineral phase. In comparison with calcium oxide powder, the cuttlefish bone catalyst has the highest crystallites (6000) than calcium oxide powder (4000). SEM-EDS result showed the microstructure of cuttlefish bone heterogeneous base catalyst morphologically have dissimilar particle shape and size comparing to tohor lime heterogeneous base catalyst. Cuttlefish bone catalyst particle size is smaller than catalyst from tohor lime. Morphologically showed the difference is cuttlefish bone catalyst has tidy-clots form while tohor lime catalyst has slab-shaped. These particle shape and size will affect to catalyst properties, which smaller particle size will be affected to effectivity of catalyst activity. From EDS result showed main mineral compound of cuttlefish bone catalyst is calcium attain 93%.
4
Arifin, Arfiani, Nur Ida, and Rosmiyanti Rosmiyanti. "FORMULASI DAN UJI IRITASI SEDIAAN LULUR KRIM CANGKANG SOTONG (Sepia sp.) TERHADAP KELINCI (Oryctolagus cuniculus)." Jurnal Riset Kefarmasian Indonesia 5, no. 1 (January 25, 2023): 68–83. http://dx.doi.org/10.33759/jrki.v5i1.359.
Анотація:
Cuttlefish shell (Sepia sp.) contains calcium carbonate which has benefits in removing dead skin cells, regulating skin pigmentation, shrinking pores, removing acne and black spots and making skin brighter. The aims of this study were to formalize dosage form of cuttlefish shell cream scrub (Sepia sp.) that meets the physical quality requirements and to determine the potential irritation of cuttlefish shell (Sepia sp.) cream scrubs in rabbits (Oryctolagus cuniculus). Reseacrh methods include the dosage form of cuttlefish shell powder using sieve mesh 44, cream scrub formulations with variations in cuttlefish shell powder concentrations by 15%, 20% and 25%. Physical quality test carried iut includes organoleptic tests, homogeneity tests, scatter power tests and sticking power tests. The cream scrub formula irritation test was carried out by patch test method in rabbit test animals. The results of the study obtained that cuttlefish shell cream scrubs have qualified physical quality tests and the degree of irritation value of F1 cream scrubs (cuttlefish shell 15%) of 0,2 which is categorized means very mild irritation.
5
Allen, Justine J., Lydia M. Mäthger, Alexandra Barbosa, Kendra C. Buresch, Emilia Sogin, Jillian Schwartz, Charles Chubb, and Roger T. Hanlon. "Cuttlefish dynamic camouflage: responses to substrate choice and integration of multiple visual cues." Proceedings of the Royal Society B: Biological Sciences 277, no. 1684 (December 2, 2009): 1031–39. http://dx.doi.org/10.1098/rspb.2009.1694.
Анотація:
Prey camouflage is an evolutionary response to predation pressure. Cephalopods have extensive camouflage capabilities and studying them can offer insight into effective camouflage design. Here, we examine whether cuttlefish, Sepia officinalis , show substrate or camouflage pattern preferences. In the first two experiments, cuttlefish were presented with a choice between different artificial substrates or between different natural substrates. First, the ability of cuttlefish to show substrate preference on artificial and natural substrates was established. Next, cuttlefish were offered substrates known to evoke three main camouflage body pattern types these animals show: Uniform or Mottle (function by background matching); or Disruptive. In a third experiment, cuttlefish were presented with conflicting visual cues on their left and right sides to assess their camouflage response. Given a choice between substrates they might encounter in nature, we found no strong substrate preference except when cuttlefish could bury themselves. Additionally, cuttlefish responded to conflicting visual cues with mixed body patterns in both the substrate preference and split substrate experiments. These results suggest that differences in energy costs for different camouflage body patterns may be minor and that pattern mixing and symmetry may play important roles in camouflage.
6
Widharto, Damaryanto, and W. Marsudi. "Pengaruh Penambahan Tepung Tulang Sotong (Cuttelfish bone) dalam Ransum terhadap Konsumsi Pakan, Pertambahan Bobot Badan, dan Karkas Ayam Pedaging." AGRISAINTIFIKA: Jurnal Ilmu-Ilmu Pertanian 1, no. 2 (December 30, 2017): 132. http://dx.doi.org/10.32585/ags.v1i2.49.
Анотація:
AbstractThis research was conducted to to know influence of cuttlefish bone flour in ransum to feed consumption, average daily gain, and carcasse weight. The research use 60 day old chick of broilers which were devided into 4 treatments, that is 1) control treatment (T-0), broiler were given concentrate feed without addition of cuttlefish bone flour, 2) T-1, broiler were given concentrate feed with addition of cuttlefish bone flour as much as 1%, 3) T-2, broiler were given concentrate feed with addition of cuttlefish bone flour as much as 1.5%, and 4) T-3, broiler were given concentrate feed with addition of cuttlefish bone flour as much as 2%.The variables observed feed consumption, average daily gain, and carcasse weight. The result showed that feed consumption is 54.59 (T-0), 55.71 (T-1), 58.77 (T-2), 58.55 g/head/day (T-3), average daily gain is 38.8 (T-0), 41.5 (T-1), 40.6 (T-2) and 38.7 (g/head/day T-3), and carcasse weight 531.33 (T-0), 750.67 (T-1), 761.67 (T-2), 770.67 g/head/day (T-3). Research conclusion is addition of cuttlefish bone flour in ration not yet to improve feed consumption, and average daily gain, but can improve carcasse weight of broiler.Keywords : Broiler, carcasse, and cuttlefish bone flour.
7
Smith, H. C., and K. R. Sprogis. "Seasonal feeding on giant cuttlefish (Sepia apama) by Indo-Pacific bottlenose dolphins (Tursiops aduncus) in south-western Australia." Australian Journal of Zoology 64, no. 1 (2016): 8. http://dx.doi.org/10.1071/zo15075.
Анотація:
We report on observations of Indo-Pacific bottlenose dolphins (Tursiops aduncus) feeding on giant cuttlefish (Sepia apama) from March 2007 to April 2013 in the temperate waters off Bunbury, south-western Australia. Seventeen feeding events were observed during the cooler months between July and September in relatively shallow coastal waters, with 12 dolphins identified as adult females. We observed behavioural sequences of complex prey-handling of cuttlefish where dolphins’ used multiple steps to remove the cuttlefish head, ink and cuttlebone before consuming the flesh of the cuttlefish mantle. Our study provides valuable information to the limited knowledge on the complex prey-handling by T. aduncus on cuttlefish in Australia, and is complementary to other known specialised foraging behaviours of bottlenose dolphins. This study also details a different behavioural sequence of cuttlefish prey-handling to that of the bottlenose dolphins in the Sado estuary, Portugal, where only the head is consumed, and to the Spencer Gulf, Australia, in that the dolphins in Bunbury carry the cuttlefish mantle over their rostrum before removing the cuttlebone. Information on S. apama in Bunbury is scarce, therefore studies on abundance, distribution and egg-laying sites are recommended in order to enable informed decision making and to understand the importance of S. apama to the diet of T. aduncus.
8
Putri, Saltsa Arinda, and Laksmi Sulmartiwi. "Frozen Cuttlefish (Sepia officinalis) Production Process with Contact Plate Freezing Method at PT. Karya Mina Putra, Rembang, Central Java." Journal of Marine and Coastal Science 10, no. 2 (June 21, 2021): 99. http://dx.doi.org/10.20473/jmcs.v10i2.27662.
Анотація:
Cuttlefish is widely consumed by the public because it has a soft meat texture and high nutritional content. This makes the cuttlefish one of the mollusca that is a source of protein in addition to squid and octopus. The disadvantage of cuttlefish is that it is prone to deterioration in quality. One effort to prevent quality deterioration in cuttlefish is by freezing. The purpose of the implementation of this Field Work Practice is to decide the production process of frozen cuttlefish (Sepia officinalis) using the Contact Plate Freezing (CPF) method and to know the obstacles that occur in the production process. Field Work Practice was held in PT. Karya Mina Putra, Rembang, Central Java. The stages of the frozen cuttlefish production process at PT. Mina Putra's work includes the reception of raw materials, weighing I and sorting, labeling I, weighing II, washing, pan preparation, freezing, glazing, packaging and labeling II, storing in cold storage, and loading. The freezing process is carried out by the Contact Plate Freezing (CPF) method for 6 hours until the temperature reaches -40 ° C. The obstacle in the production process of frozen cuttlefish is there was a Contact Plate Freezing (CPF) machine damage and there are some employees who do not apply the SOP applied to prevent cross-contamination of the product.
9
Lee, Yi-Hsin, Hong Young Yan, and Chuan-Chin Chiao. "Effects of early visual experience on the background preference in juvenile cuttlefish Sepia pharaonis." Biology Letters 8, no. 5 (July 11, 2012): 740–43. http://dx.doi.org/10.1098/rsbl.2012.0398.
Анотація:
Although cuttlefish are capable of showing diverse camouflage body patterns against a variety of background substrates, whether they show background preference when given a choice of substrates is not well known. In this study, we characterized the background choice of post-embryonic cuttlefish ( Sepia pharaonis ) and examined the effects of rearing visual environments on their background preferences. Different rearing backgrounds (enriched, uniformly grey and checkerboard) were used to raise cuttlefish from eggs or hatchlings, and four sets of two-background-choice experiments (differences in contrast, shape, size and side) were conducted at day 1 and weeks 4, 8 and 12 post-hatch. Cuttlefish reared in the enriched environment preferred high-contrast backgrounds at all post-embryonic stages. In comparison, those reared in the impoverished environments (uniformly grey and checkerboard) had either reversed or delayed high-contrast background preference. In addition, cuttlefish raised on the uniformly grey background, exposed to a checkerboard briefly (0.5 or 3 h) at week 4 and tested at week 8 showed increased high-contrast background preference. Interestingly, cuttlefish in the enriched group preferred an object size similar to their body size at day 1 and week 4, but changed this preference to smaller objects at week 12. These results suggest that high-contrast backgrounds may be more adaptive for juvenile cuttlefish, and visually enriched environments are important for the development of these background preference behaviours.
10
Widiastuti, Indah, Herpandi Herpandi, Muhammad Ridho, and Nafa Ya’la Arrahmi. "Effects of Liquid Smoke Concentrations on The Characteristics of Smoked Cuttelfish." Jurnal Pengolahan Hasil Perikanan Indonesia 22, no. 1 (April 30, 2019): 24. http://dx.doi.org/10.17844/jphpi.v22i1.25871.
Анотація:
Cuttlefish is a seasonal and highly perishable fishery commodity. Accordingly, processing is needed to increase the shelf life of the cuttlefish. Fish smoking using liquid smoke has been widely used for processing. This study was aimed to determine the effect of liquid smoke concentration on the quality of smoked cuttlefish product. Four liquid smoke concentrations (0%, 6%, 12%, and 18%) were compared and the product quality was evaluated based on the chemical properties and sensory evaluation. The results showed that liquid smoke significantly affected the moisture and phenol content but the ash, protein, lipid and cholesterol content were not different. The different in liquid smoke concentration also did not significantly affect the sensory properties of the smoked cuttlefish. The chemical analysis revealed the polyunsaturated fatty acids were dominant in the smoked cuttlefish as compared to the monounsaturated fatty acids and the saturated fatty acids (34.4% vs 22.7% vs, 27.0%, respectively)
11
Feord, R. C., M. E. Sumner, S. Pusdekar, L. Kalra, P. T. Gonzalez-Bellido, and Trevor J. Wardill. "Cuttlefish use stereopsis to strike at prey." Science Advances 6, no. 2 (January 2020): eaay6036. http://dx.doi.org/10.1126/sciadv.aay6036.
Анотація:
The camera-type eyes of vertebrates and cephalopods exhibit remarkable convergence, but it is currently unknown whether the mechanisms for visual information processing in these brains, which exhibit wildly disparate architecture, are also shared. To investigate stereopsis in a cephalopod species, we affixed “anaglyph” glasses to cuttlefish and used a three-dimensional perception paradigm. We show that (i) cuttlefish have also evolved stereopsis (i.e., the ability to extract depth information from the disparity between left and right visual fields); (ii) when stereopsis information is intact, the time and distance covered before striking at a target are shorter; (iii) stereopsis in cuttlefish works differently to vertebrates, as cuttlefish can extract stereopsis cues from anticorrelated stimuli. These findings demonstrate that although there is convergent evolution in depth computation, cuttlefish stereopsis is likely afforded by a different algorithm than in humans, and not just a different implementation.
12
Aminatun, Aminatun, D. E. Fadhilah Handayani, Prihartini Widiyanti, Dwi Winarni, and Siswanto Siswanto. "In vivo approach on femur bone regeneration of white rat (Rattus norvegicus) with the use of hydroxyapatite from cuttlefish bone (Sepia spp.) as bone filler." Veterinary World 12, no. 6 (June 2019): 809–16. http://dx.doi.org/10.14202/vetworld.2019.809-816.
Анотація:
Background: Hydroxyapatite (HA) from bovine bone has been widely used as bone filler in many fractures cases. HA can also be made from cuttlefish bone (Sepia spp.) that has abundant availability in Indonesia and contains 84% CaCO3, which is a basic ingredient of HA. However, research on the effects of HA from cuttlefish bone on bone regeneration parameters has not been done yet. Aim: This study aimed to determine femur bone regeneration of white rats (Rattus norvegicus) through the use of HA from cuttlefish bone (Sepia spp.) as bone filler. Materials and Methods: HA was made using the hydrothermal method by mixing 1M aragonite (CaCO3) from cuttlefish bone and 0.6 M NH4H2PO4 at 200°C for 12 h followed by sintering at 900°C for 1 h. In vivo test was carried out in three groups, including control group, bovine bone-derived HA group, and cuttlefish bone-derived HA group. The generation of femur bone was observed through the number of osteoblasts, osteoclasts, woven bone, lamellar bone, havers system, and repair bone through anatomical pathology test for 28 days and 56 days. Results: Anatomical pathology test results are showed that administration of bovine bone-derived HA and cuttlefish bone-derived HA increased the number of osteoblasts, osteoclasts, woven bone, lamellar bone, havers system, and bone repair at recuperation of 56 days. Statistical test using Statistical Package for the Social Sciences with Kruskal–Wallis and Mann–Whitney U-test was resulted in significant differences between the bovine bone-derived HA control group and the cuttlefish-derived HA control group. There was no significant difference toward the indication of bone formation through the growth of osteoblasts, osteoclasts, woven bone, lamellar bone, havers system, and bone repair in the bovine bone-derived HA and cuttlefish bone-derived HA groups. Conclusion: It can be concluded that cuttlefish bone-derived HA has the potential as bone filler based on the characteristics of bone regeneration through in vivo test.
13
Rogers, C., L. Nelson, and B. Brown. "Different excitation-contraction coupling mechanisms exist in squid, cuttlefish and octopod mantle muscle." Journal of Experimental Biology 200, no. 23 (December 1, 1997): 3033–41. http://dx.doi.org/10.1242/jeb.200.23.3033.
Анотація:
Excitation-contraction (EC) coupling was studied in central zone mantle muscle fibres of a squid (Alloteuthis subulata), a cuttlefish (Sepia officinalis) and an octopod (Eledone cirrhosa). Thin slices of muscle were used for twitch experiments and enzymatic isolation of single fibres for whole-cell patch-clamp studies. The current required for a supramaximal twitch response during direct stimulation of muscle slices was lower for squid than for cuttlefish. In squid, but not in cuttlefish, the current-response relationship was independent of slice thickness (range 0.1-0.5 mm). Twitches of squid and cuttlefish slices were reversibly abolished by removal of extracellular Ca2+. In squid, but not in cuttlefish, the current-response relationship was Na+-dependent, and in the absence of Na+ higher current strengths were required to generate a supramaximal response. In whole-cell voltage-clamp experiments on isolated muscle fibres from squid, cuttlefish and Eledone cirrhosa, a sustained inward current was recorded upon depolarisation. This current was blocked by 5 mmol l-1 Co2+ and suppressed by 10 micromol l-1 nifedipine. In squid, an additional inward fast-activating transient current was seen which was blocked by 2 micromol l-1 tetrodotoxin and depolarised holding potentials. The fast current represents a voltage-activated Na+ channel, and the slow currents represent L-type Ca2+ channels. We conclude that squid possess a specialised rapid EC coupling mechanism in central zone fibres that is absent in cuttlefish and Eledone cirrhosa.
14
Shashar, N., P. Rutledge, and T. Cronin. "Polarization vision in cuttlefish in a concealed communication channel?" Journal of Experimental Biology 199, no. 9 (September 1, 1996): 2077–84. http://dx.doi.org/10.1242/jeb.199.9.2077.
Анотація:
Polarization sensitivity is well documented in marine animals, but its function is not yet well understood. Of the cephalopods, squid and octopus are known to be sensitive to the orientation of polarization of incoming light. This sensitivity arises from the orthogonal orientation of neighboring photoreceptors. Electron microscopical examination of the retina of the cuttlefish Sepia officinalis L. revealed the same orthogonal structure, suggesting that cuttlefish are also sensitive to linearly polarized light. Viewing cuttlefish through an imaging polarized light analyzer revealed a prominent polarization pattern on the arms, around the eyes and on the forehead of the animals. The polarization pattern disappeared when individuals lay camouflaged on the bottom and also during extreme aggression display, attacks on prey, copulation and egg-laying behavior in females. In behavioral experiments, the responses of cuttlefish to their images reflected from a mirror changed when the polarization patterns of the reflected images were distorted. These results suggest that cuttlefish use polarization vision and display for intraspecific recognition and communication.
15
Wang, Jianjun, Graham J. Pierce, Peter R. Boyle, Vincent Denis, Jean-Paul Robin, and Jose M. Bellido. "Spatial and temporal patterns of cuttlefish (Sepia officinalis) abundance and environmental influences – a case study using trawl fishery data in French Atlantic coastal, English Channel, and adjacent waters." ICES Journal of Marine Science 60, no. 5 (January 1, 2003): 1149–58. http://dx.doi.org/10.1016/s1054-3139(03)00118-8.
Анотація:
Abstract The spatial and temporal distribution patterns of cuttlefish abundance and the relationships between cuttlefish abundance and environmental variables in the French Atlantic coast, the English Channel, and adjacent waters were studied using both geographical information system and statistical methods. Cuttlefish have a clear general annual migration pattern, consistently occurring in broadly the same areas in different years. The strength of the Atlantic currents into the west part of the English Channel and the south part of the Celtic Sea may be the dominant influence on the timing of cuttlefish migration to these areas. Local abundance shows a positive correlation with SST, although it is difficult to determine if this reflects any causal link. Cuttlefish expand their distribution further north in the spawning season in warm years and shift south in cool years. The centre of high abundance in offshore deep water shifts north in warm winters and south in cool winters.
16
Kasugai, Takashi. "Feeding behaviour of the Japanese pygmy cuttlefish Idiosepius paradoxus (Cephalopoda: Idiosepiidae) in captivity: evidence for external digestion?" Journal of the Marine Biological Association of the United Kingdom 81, no. 6 (December 2001): 979–81. http://dx.doi.org/10.1017/s0025315401004933.
Анотація:
Feeding behaviour of the Japanese pygmy cuttlefish Idiosepius paradoxus, inhabiting sea grass beds, was observed in captivity. Pygmy cuttlefish preferred to feed on crustaceans and the feeding behaviour consisted of two phases, namely, attacking and eating. The sequence of attacking behaviour is divisible into three stages, namely attention, positioning and seizure. In the eating process, pygmy cuttlefish insert buccal mass into the exoskeleton of the captured crustacean. In this action the buccal mass elongates to a similar length to the first arm, and moves in various directions inside the exoskeleton and flesh is ingested as this behaviour proceeds. As a result, the empty exoskeleton remained intact when the pygmy cuttlefish finished feeding.
17
Kim, Jung Jae, Hae Jung Kim, and Kang Sik Lee. "Evaluation of Biocompatibility of Porous Hydroxyapatite Developed from Edible Cuttlefish Bone." Key Engineering Materials 361-363 (November 2007): 155–58. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.155.
Анотація:
A edible cuttlefish(Zoological name : Sepia esculenta) bone has a porous structure with all pores interconnected The purpose of this research is to develop porous hydroxyapatite prepared by hydrothermal treatment from cuttlefish bone and evaluate the biocompatibility using undecalcified materials through the in-vivo test of rabbits. In this study, the phase and substructure of a porous hydroxyapatite, prepared by hydrothermal treatment using edible cuttlefish bone as a calcium source, has been confirmed by X-ray diffractometer and scanning electronic microscope. After preparing the specimens with 5mm diameter and 7mm length, the specimens were implanted into the femoral condyles of rabbits. Each rabbits were sacrificed at each time period of 1, 2, 3, 4 weeks after operation, respectively and the stained section was examined by a transmission light microscope. The X-ray diffraction patterns of the edible cuttlefish bone was confirm for aragonite phase and of the sample after hydrothermal treatment showed mostly into hydroxyapatite phase. There was more bone density increase in porous HA rod around implant site than natural edible cuttlefish bone. Because the edible cuttlefish bone is a very pure and good calcium source, porous hydroxyapatite developed from this study is expected to be a biomaterial having a good biocompatibility to be used as a suitable bone substitute.
18
Schnell, Alexandra K., Markus Boeckle, Micaela Rivera, Nicola S. Clayton, and Roger T. Hanlon. "Cuttlefish exert self-control in a delay of gratification task." Proceedings of the Royal Society B: Biological Sciences 288, no. 1946 (March 3, 2021): 20203161. http://dx.doi.org/10.1098/rspb.2020.3161.
Анотація:
The ability to exert self-control varies within and across taxa. Some species can exert self-control for several seconds whereas others, such as large-brained vertebrates, can tolerate delays of up to several minutes. Advanced self-control has been linked to better performance in cognitive tasks and has been hypothesized to evolve in response to specific socio-ecological pressures. These pressures are difficult to uncouple because previously studied species face similar socio-ecological challenges. Here, we investigate self-control and learning performance in cuttlefish, an invertebrate that is thought to have evolved under partially different pressures to previously studied vertebrates. To test self-control, cuttlefish were presented with a delay maintenance task, which measures an individual's ability to forgo immediate gratification and sustain a delay for a better but delayed reward. Cuttlefish maintained delay durations for up to 50–130 s. To test learning performance, we used a reversal-learning task, whereby cuttlefish were required to learn to associate the reward with one of two stimuli and then subsequently learn to associate the reward with the alternative stimulus. Cuttlefish that delayed gratification for longer had better learning performance. Our results demonstrate that cuttlefish can tolerate delays to obtain food of higher quality comparable to that of some large-brained vertebrates.
19
STORELLI, M. M., G. BARONE, and G. O. MARCOTRIGIANO. "Cadmium in Cephalopod Molluscs: Implications for Public Health." Journal of Food Protection 68, no. 3 (March 1, 2005): 577–80. http://dx.doi.org/10.4315/0362-028x-68.3.577.
Анотація:
Cadmium concentrations were measured in the flesh and hepatopancreas (digestive gland) of 1,392 specimens of different species of cephalopod molluscs (broadtail squid, spider octopus, curled octopus, horned octopus, elegant cuttlefish, and pink cuttlefish) to determine whether maximum levels fixed by the European Commission were exceeded. In all species, mean cadmium concentrations were higher in hepatopancreas than in flesh. Large differences among the different species were also observed. Pink cuttlefish and spider octopus had the highest concentrations for both flesh (spider octopus, 0.77 μg g−1; pink cuttlefish, 0.87 μg g−1) and hepatopancreas (spider octopus, 9.65 μg g−1; pink cuttlefish, 18.03 μg g−1), and the lowest concentrations were encountered in broadtail squid (flesh, 0.13 μg g−1; hepatopancreas, 2.48 μg g−1). The other species had intermediate concentrations of 0.20 to 0.30 μg g−1 in flesh and 5.46 to 8.01 μg g−1 in hepatopancreas. Concentrations exceeding the limit proposed by the European Commission (1.00 μg g−1) were observed in 44.4 and 40.0% of flesh samples of spider octopus and pink cuttlefish, respectively. The estimated weekly intake, 0.09 to 0.66 μg/kg body weigh, was below the provisional tolerable weekly intake set by the World Health Organization.
20
Billard, Pauline, Alexandra K. Schnell, Nicola S. Clayton, and Christelle Jozet-Alves. "Cuttlefish show flexible and future-dependent foraging cognition." Biology Letters 16, no. 2 (February 2020): 20190743. http://dx.doi.org/10.1098/rsbl.2019.0743.
Анотація:
Some animals optimize their foraging activity by learning and memorizing food availability, in terms of quantity and quality, and adapt their feeding behaviour accordingly. Here, we investigated whether cuttlefish flexibly adapt their foraging behaviour according to the availability of their preferred prey. In Experiment 1, cuttlefish switched from a selective to an opportunistic foraging strategy (or vice versa ) when the availability of their preferred prey at night was predictable versus unpredictable. In Experiment 2, cuttlefish exhibited day-to-day foraging flexibility, in response to experiencing changes in the proximate future (i.e. preferred prey available on alternate nights). In Experiment 1, the number of crabs eaten during the day decreased when shrimp (i.e. preferred food) were predictably available at night, while the consumption of crabs during the day was maintained when shrimp availability was unpredictable. Cuttlefish quickly shifted from one strategy to the other, when experimental conditions were reversed. In Experiment 2, cuttlefish only reduced their consumption of crabs during the daytime when shrimps were predictably available the following night. Their daytime foraging behaviour appeared dependent on shrimps' future availability. Overall, cuttlefish can adopt dynamic and flexible foraging behaviours including selective, opportunistic and future-dependent strategies, in response to changing foraging conditions.
21
Muhammad Naoval Haris, Ratnawati Ratnawati, and Nita Aryanti. "Effect of acid and alkaline treatment on the adsorption capacity of cuttlefish bone." World Journal of Advanced Engineering Technology and Sciences 9, no. 1 (June 30, 2023): 316–20. http://dx.doi.org/10.30574/wjaets.2023.9.1.0177.
Анотація:
As a center of textile industry in Indonesia, city of Pekalongan faces environmental issue due to wastewater effluent from textile industry. The wastewater from textile industry contains dye, mostly synthetic dye, used for coloring the fabrics. One of the dyes commonly used is sulphur blue for producing dark blue color. One of simple methods to reduce the dye in the wastewater is adsorption. Cuttlefish bone was used as the adsorbent. It is abundantly available and cheap because it is a waste of fishing industry. The effect of acid and alkaline treatment to the cuttlefish bone on its adsorption capacity toward sulphur blue dye was investigated. The acid and alkaline treatments were conducted using hydrochloric and sodium hydrochloric solutions, respectively. The concentrations of both solutions were varied (0.0 N, 0.25 N, 0.5 N, 0.75 N, 1.0 N). The concentration of acid and alkaline affect the adsorption capacity of the cuttlefish bone. The cuttlefish bone treated with 0.25 N hydrochloric solution is able to reduce the concentration of the dye solution from 217.67 to 87.67 Pt-Co, while that treated with 0.25N sodium hydroxide solution lowers the concentration of the dye solution to 74.33 Pt-Co. The alkaline-treated cuttlefish bone showed higher adsorption capacity than the acid-treated cuttlefish bone.
22
Stark, Ryan J. "Cuttlefish Rhetoric." Rhetorica 35, no. 1 (2017): 52–74. http://dx.doi.org/10.1525/rh.2017.35.1.52.
Анотація:
I explain why Thomas Wilson likens to cuttlefish those orators who rely too heavily on inkhorn terms. For the sake of comparison, I also discuss how Renaissance critics use other creaturely metaphors—eels, snakes, devils, and oxen—to impugn bad rhetoricians. My underlying purpose is to reveal Wilson's neglected religious motives for rejecting inkpot words and, by extension, some of the key religious motives informing the period's language controversies.
23
Neff, Ellen P. "Dreamy cuttlefish." Lab Animal 48, no. 2 (January 22, 2019): 46. http://dx.doi.org/10.1038/s41684-018-0233-2.
24
Stark, Ryan J. "Cuttlefish Rhetoric." Rhetorica 35, no. 1 (December 2017): 52–74. http://dx.doi.org/10.1353/rht.2017.0023.
25
D, Jim. "Cuttlefish Dreams." Scientific American 320, no. 5 (May 2019): 25. http://dx.doi.org/10.1038/scientificamerican0519-25.
26
Yang, Tsang-I., and Chuan-Chin Chiao. "Number sense and state-dependent valuation in cuttlefish." Proceedings of the Royal Society B: Biological Sciences 283, no. 1837 (August 31, 2016): 20161379. http://dx.doi.org/10.1098/rspb.2016.1379.
Анотація:
Identifying the amount of prey available is an important part of an animal's foraging behaviour. The risk-sensitive foraging theory predicts that an organism's foraging decisions with regard to food rewards depending upon its satiation level. However, the precise interaction between optimal risk-tolerance and satiation level remains unclear. In this study, we examined, firstly, whether cuttlefish, with one of the most highly evolved nervous system among the invertebrates, have number sense, and secondly, whether their valuation of food reward is satiation state dependent. When food such as live shrimps is present, without training, cuttlefish turn toward the prey and initiate seizure behaviour. Using this visual attack behaviour as a measure, cuttlefish showed a preference for a larger quantity when faced with two-alternative forced choice tasks (1 versus 2, 2 versus 3, 3 versus 4 and 4 versus 5). However, cuttlefish preferred the small quantity when the choice was between one live and two dead shrimps. More importantly, when the choice was between one large live shrimp and two small live shrimps (a prey size and quantity trade-off), the cuttlefish chose the large single shrimp when they felt hunger, but chose the two smaller prey when they were satiated. These results demonstrate that cuttlefish are capable of number discrimination and that their choice of prey number depends on the quality of the prey and on their appetite state. The findings also suggest that cuttlefish integrate both internal and external information when making a foraging decision and that the cost of obtaining food is inversely correlated with their satiation level, a phenomenon similar to the observation that metabolic state alters economic decision making under risk among humans.
27
Khan, Jamshed, and Rob Patro. "Cuttlefish: fast, parallel and low-memory compaction of de Bruijn graphs from large-scale genome collections." Bioinformatics 37, Supplement_1 (July 1, 2021): i177—i186. http://dx.doi.org/10.1093/bioinformatics/btab309.
Анотація:
Abstract Motivation The construction of the compacted de Bruijn graph from collections of reference genomes is a task of increasing interest in genomic analyses. These graphs are increasingly used as sequence indices for short- and long-read alignment. Also, as we sequence and assemble a greater diversity of genomes, the colored compacted de Bruijn graph is being used more and more as the basis for efficient methods to perform comparative genomic analyses on these genomes. Therefore, time- and memory-efficient construction of the graph from reference sequences is an important problem. Results We introduce a new algorithm, implemented in the tool Cuttlefish, to construct the (colored) compacted de Bruijn graph from a collection of one or more genome references. Cuttlefish introduces a novel approach of modeling de Bruijn graph vertices as finite-state automata, and constrains these automata’s state-space to enable tracking their transitioning states with very low memory usage. Cuttlefish is also fast and highly parallelizable. Experimental results demonstrate that it scales much better than existing approaches, especially as the number and the scale of the input references grow. On a typical shared-memory machine, Cuttlefish constructed the graph for 100 human genomes in under 9 h, using ∼29 GB of memory. On 11 diverse conifer plant genomes, the compacted graph was constructed by Cuttlefish in under 9 h, using ∼84 GB of memory. The only other tool completing these tasks on the hardware took over 23 h using ∼126 GB of memory, and over 16 h using ∼289 GB of memory, respectively. Availability and implementation Cuttlefish is implemented in C++14, and is available under an open source license at https://github.com/COMBINE-lab/cuttlefish. Supplementary information Supplementary data are available at Bioinformatics online.
28
Chiao, Chuan-Chin, and Roger T. Hanlon. "Cuttlefish camouflage: visual perception of size, contrast and number of white squares on artificial checkerboard substrata initiates disruptive coloration." Journal of Experimental Biology 204, no. 12 (June 15, 2001): 2119–25. http://dx.doi.org/10.1242/jeb.204.12.2119.
Анотація:
SUMMARY We investigated some visual background features that influence young cuttlefish, Sepia pharaonis, to change their skin patterning from ‘general resemblance’ of the substratum to disruptive coloration that breaks up their body form. Using computer-generated black/white checkerboard patterns as substrata, we first found that the size of the white squares had to be within a certain narrow range (relative to the size of the cuttlefish ‘white square’) for the animal to exhibit disruptive skin patterning. Second, given the appropriate size of checker, cuttlefish regulated their disruptive skin patterns according to the contrast between white and black squares. Third, by manipulating the number of white squares on a black background, we found that as few as four white squares among 316 black squares (or 1.25%) produced disruptive patterning, yet increasing the number of white squares to 20, 40 or 80 did not increase the frequency of appearance of the cuttlefish ‘white square’, but only its clarity of expression. These results demonstrate that the size, contrast and number of white objects in the surrounding substratum influence the production and expression of disruptive skin patterns in young cuttlefish. Movies available on-line
29
Syukur, Abdul, Agil Al-Idrus, Lalu Muhammad Imam Husaini M. Nasir, and Pahmi Pahmi. "Potensi Bibit Sotong untuk Pengembangan Keragaman Budidaya Nelayan Kecil sebagai Strategi Konsevasi Lamun di Perairan Pesisir Lombok Timur." JURNAL SAINS TEKNOLOGI & LINGKUNGAN 5, no. 2 (December 26, 2019): 94. http://dx.doi.org/10.29303/jstl.v5i2.118.
Анотація:
Diversification of marine culture has an effective value for the sustainability of the livelihoods of small fishermen. In addition it can play a role in preventing the threat of utilization that is not environmentally friendly. Cuttlefish is one of the types of marine biota commodity that has high economic value and has the potential to be developed as a fishery diversification community. The purpose of this study was to determine the indicators of the potential of cuttlefish cultivation as a diversification strategy for small fishermen's cultivation and seagrass conservation in the study location. The research method used is the method of direct observation and interviews. Data analysis uses descriptive statistical analysis. The results showed that the average cuttlefish seedlings were 1293.5 individuals / month and the average cuttlefish caught by fishermen landed at TPI Tanjung Luar was 1229 individuals / month consisting of three species namely Sepia latimanus, Sepia pharaonis and Sepioteuthis lessoniana. In addition, marine cultivation has developed into the choice of livelihood for small fishermen, although it is still complementary. Furthermore, the group of farmers plays an active role in preventing local threats from uses that are not environmentally friendly. The conclusion is the diversification of cultivation with cuttlefish community is of strategic value to overcome the problem of the sustainability of small fishing livelihoods and local scale seagrass conservation in the study location. Therefore, diversification of cuttlefish culture can be considered, especially at the scale of small fishermen as a policy of developing seafood products to achieve food security, both at local, regional and national scale.
30
Kuo, Tzu-Hsin, and Chuan-Chin Chiao. "Learned valuation during forage decision-making in cuttlefish." Royal Society Open Science 7, no. 12 (December 2020): 201602. http://dx.doi.org/10.1098/rsos.201602.
Анотація:
Decision-making, when humans and other animals choose between two options, is not always based on the absolute values of the options but can also depend on their relative values. The present study examines whether decision-making by cuttlefish is dependent on relative values learned from previous experience. Cuttlefish preferred a larger quantity when making a choice between one or two shrimps (1 versus 2) during a two-alternative forced choice. However, after cuttlefish were primed under conditions where they were given a small reward for choosing one shrimp in a no shrimp versus one shrimp test (0 versus 1) six times in a row, they chose one shrimp significantly more frequently in the 1 versus 2 test. This reversed preference for a smaller quantity was not due to satiation at the time of decision-making, as cuttlefish fed a small shrimp six times without any choice test prior to the experiment still preferred two shrimps significantly more often in a subsequent 1 versus 2 test. This suggests that the preference of one shrimp in the quantity comparison test occurs via a process of learned valuation. Foraging preference in cuttlefish thus depends on the relative value of previous prey choices.
31
Panetta, Deanna, Kendra Buresch, and Roger T. Hanlon. "Dynamic masquerade with morphing three-dimensional skin in cuttlefish." Biology Letters 13, no. 3 (March 2017): 20170070. http://dx.doi.org/10.1098/rsbl.2017.0070.
Анотація:
Masquerade is a defence tactic in which a prey resembles an inedible or inanimate object thus causing predators to misclassify it. Most masquerade colour patterns are static although some species adopt postures or behaviours to enhance the effect. Dynamic masquerade in which the colour pattern can be changed is rare. Here we report a two-step sensory process that enables an additional novel capability known only in cuttlefish and octopus: morphing three-dimensional physical skin texture that further enhances the optical illusions created by coloured skin patterns. Our experimental design incorporated sequential sensory processes: addition of a three-dimensional rock to the testing arena, which attracted the cuttlefish to settle next to it; then visual processing by the cuttlefish of physical textures on the rock to guide expression of the skin papillae, which can range from fully relaxed (smooth skin) to fully expressed (bumpy skin). When a uniformly white smooth rock was presented, cuttlefish moved to the rock and deployed a uniform body pattern with mostly smooth skin. When a rock with small-scale fragments of contrasting shells was presented, the cuttlefish deployed mottled body patterns with strong papillae expression. These robust and reversible responses indicate a sophisticated visual sensorimotor system for dynamic masquerade.
32
Faksawat, Kridsada, Supphadate Sujinnapram, Pichet Limsuwan, Ekachai Hoonnivathana, and Kittisakchai Naemchanthara. "Preparation and Characteristic of Hydroxyapatite Synthesized from Cuttlefish Bone by Precipitation Method." Advanced Materials Research 1125 (October 2015): 421–25. http://dx.doi.org/10.4028/www.scientific.net/amr.1125.421.
Анотація:
Calcium phosphates ceramics such as a hydroxyapatite have composition and structure similar to be mineral component of bone. Hydroxyapatite could be production from natural and chemical source with various techniques. In this study, Calcium phosphates was prepared and characterized for future applications on the utilization of bioactivity and resorbability of Hydroxyapatite. Hydroxyapatite was synthesized by precipitation method using cuttlefish bone as the calcium (Ca) source in the form of calcium nitrate and ammonium phosphate as the phosphate (P) source. The property, crystal structure and crystalline size of samples were investigated by X-ray diffraction (XRD) and Fourier transforms infrared spectroscopy (FTIR). The results showed that the raw cuttlefish bone was calcite and aragonite phase and completely transformed to calcium oxide at 1000 °C. Hydroxyapatite from cuttlefish bone was hexagonal phase. The crystalline size of hydroxyapatite increases with increasing temperature from 200-1300 °C. This experiment indicated that the hydroxyapatite could be synthetized from cuttlefish bone.
33
Martínez, P., and N. A. Moltschaniwskyj. "Description of growth in the tropical cuttlefish Sepia elliptica using muscle tissue." Journal of the Marine Biological Association of the United Kingdom 79, no. 2 (April 1999): 317–21. http://dx.doi.org/10.1017/s0025315498000344.
Анотація:
The mantle muscle tissue of cuttlefish is predominantly made up of circular muscle fibres which run around the body. This circular muscle tissue is divided into discrete blocks by radial fibres, which run perpendicular to the main axis of the body. Growth of mantle muscle tissue was described in the tropical cuttlefish Sepia elliptica by examining muscle block size and the density and size distribution of muscle fibres. Changes in these variables were assessed in juvenile and adult cuttlefish. Generation of new muscle fibres, both within new and existing muscle blocks, occurred as animals grew across the size range. Anterior muscle blocks were smaller than muscle blocks in the middle and posterior regions of the mantle, suggesting that new blocks were generated anteriorly. Muscle blocks were also created in the middle and posterior regions by division of existing large blocks into small blocks by generation of circular and radial muscle fibres. The examination of cuttlefish muscle growth dynamics provided an alternative way of assessing cephalopod growth mechanisms.
34
Islamy, R. Adharyan. "Antibacterial Activity of Cuttlefish Sepia sp. (Cephalopoda,) Ink Extract Against Aeromonas hydrophila." Majalah Obat Tradisional 24, no. 3 (December 31, 2019): 184. http://dx.doi.org/10.22146/mot.45315.
Анотація:
Cephalopods ink has shown potential antiretroviral activity. The ink extracts of cuttlefish showed an antibacterial effect. This study aims to investigate the antibacterial activity of the methanolic extract of the ink of cuttlefish Sepia sp. against Aeromonas hydrophila. A. hydrophila are opportunists and associated with aquatic fish and shrimp disease. The shade-dried ink sample from approximately 30g ink sacs obtained from 15 animals was immersed separately in methanol (1:3 w/v) solvents for overnight. The experiment in this study used the dried extract of cuttlefish ink. The isolate of A. hydrophila was originated from Jepara Brackishwater Aquaculture Center. The average yield percentage of cuttlefish ink extract obtained was 4.86%. The results of the MIC test in Table V show that the highest average absorbance value obtained was at a concentration of 50 ppm, which was equal to 1.716 nm, and the lowest absorbance was obtained at a treatment dose of 300 ppm at 0.841 nm, while the Mc Farland tube was 0.933 nm. The results of antibacterial test on Table II showed antibacterial activity of cuttlefish ink extract at negative concentration control showed diameter zone of 5 ± 1.2 mm, at positive control showed diameter zone of 31 ± 1.2 mm, at 250 ppm result 19 ± 0.9 mm, at 300 ppm result 22 ± 1.4 mm, at 350 ppm result 31 ± 1.2 mm.
35
BETTOSO, N., D. BORME, L. FARESI, I. ALEFFI, M. ORLANDO-BONACA, and L. LIPEJ. "New insights on the biological parameters of the exploited cuttlefish Sepia officinalis L. (Mollusca: Cephalopoda) in the northern Adriatic Sea in relation to the main fishing gears employed." Mediterranean Marine Science 17, no. 1 (February 15, 2015): 152. http://dx.doi.org/10.12681/mms.1311.
Анотація:
The cuttlefish (Sepia officinalis Linnaeus 1758) represents one of the most important coastal fishery resources of the Mediterranean Sea. For Italy, 45% of cuttlefish landings (2,328 t) originates from coastal regions of the northern Adriatic Sea: Veneto, Marche, Emilia Romagna and Friuli Venezia Giulia. In terms of economic value this species represents about 8% (~€ 16.5 million) of the production from this basin. From May 2004 to October 2005, cuttlefish were purchased from commercial landings of the Grado fishery fleet. At least 30 specimens were randomly taken each month from each fishing method employed for this species: bottom trawl (cod end mesh size 40 mm), rapido trawl, trammel net (mesh size of inner panel 30 mm) and cuttlefish specific trap. The main biological aspects, such as size, sex ratio, reproductive stage and diet in relation to both the season and type of fishing gear were analyzed. 1,495 specimens, ranging from 3.5 to 18.0 cm mantle length, were analyzed. In relation to the observed size and reproductive stage of individuals caught, trammel nets and cuttlefish traps both appeared to target sexually mature individuals, whilst trawling gear were not selective for either recruits or spawners. In total 34 prey taxa were found in the stomachs of S. officinalis: crabs and bony fish species were the most important prey, although the latter appeared mostly in the largest specimens. Finally the fullness index revealed that cuttlefish caught by trawling were more suitable for diet analysis than those caught by static gear. In this way the contribution of the present paper was to give new insights on the biological parameters of this species in relation to the main fishing gears employed in the northern Adriatic Sea.
36
Jozet-Alves, Christelle, and Marie Hébert. "Embryonic exposure to predator odour modulates visual lateralization in cuttlefish." Proceedings of the Royal Society B: Biological Sciences 280, no. 1752 (February 7, 2013): 20122575. http://dx.doi.org/10.1098/rspb.2012.2575.
Анотація:
Predation pressure acts on the behaviour and morphology of prey species. In fish, the degree of lateralization varies between high- and low-predation populations. While lateralization appears to be widespread in invertebrates, we do not know whether heredity and early experience interact during development as in vertebrates. Here we show, for the first time, that an exposure to predator odour prior to hatching modulates visual lateralization in newly hatched cuttlefish. Only cuttlefish that have been exposed to predator odour display a left-turning bias when tested with blank seawater in a T-shaped apparatus. Exposure to predator odour all the incubation long could appear as an acute predictor of a high-predation surrounding environment. In addition, cuttlefish of all groups display a left-turning preference when tested with predator odour in the apparatus. This suggests the ability of cuttlefish to innately recognize predator odour. To our knowledge, this is the first clear demonstration that lateralization is vulnerable to ecological challenges encountered during embryonic life, and that environmental stimulation of the embryo through the olfactory system could influence the development of subsequent visual lateralization.
37
Barbosa, Alexandra, Justine J. Allen, Lydia M. Mäthger, and Roger T. Hanlon. "Cuttlefish use visual cues to determine arm postures for camouflage." Proceedings of the Royal Society B: Biological Sciences 279, no. 1726 (May 11, 2011): 84–90. http://dx.doi.org/10.1098/rspb.2011.0196.
Анотація:
To achieve effective visual camouflage, prey organisms must combine cryptic coloration with the appropriate posture and behaviour to render them difficult to be detected or recognized. Body patterning has been studied in various taxa, yet body postures and their implementation on different backgrounds have seldom been studied experimentally. Here, we provide the first experimental evidence that cuttlefish ( Sepia officinalis ), masters of rapid adaptive camouflage, use visual cues from adjacent visual stimuli to control arm postures. Cuttlefish were presented with a square wave stimulus (period = 0.47 cm; black and white stripes) that was angled 0°, 45° or 90° relative to the animals' horizontal body axis. Cuttlefish positioned their arms parallel, obliquely or transversely to their body axis according to the orientation of the stripes. These experimental results corroborate our field observations of cuttlefish camouflage behaviour in which flexible, precise arm posture is often tailored to match nearby objects. By relating the cuttlefishes' visual perception of backgrounds to their versatile postural behaviour, our results highlight yet another of the many flexible and adaptive anti-predator tactics adopted by cephalopods.
38
Bågander, Linnea. "Cuttlefish – performing body." Studies in Costume & Performance 5, no. 2 (December 1, 2020): 255–71. http://dx.doi.org/10.1386/scp_00028_7.
Анотація:
This research report discusses and reflects on the development of the costume design and choreography of the performance piece Cuttlefish, 2017–19. In the performance, the costumes played an essential role as they completely transformed the movements and forms of the dancers. To enable this, costumes were designed as temporal forms, garments that contain a particular movement language based on the structural possibilities of the body. The costumes are discussed here from two perspectives: in relation to their role in constructing a narrative for the audience, choreographer and dancers and secondly concerning the practical aspects of their development as temporal forms. The suggestion is that garments constitute material opportunities, designed to provide a system of possible movements and expressions that the choreographer and dancer can explore. The result has implications for both fields of fashion design and costume design as it proposes fundamental parameters for a method of constructing garment as temporal form.
39
van Bergen, Y. "PEERING INTO CUTTLEFISH." Journal of Experimental Biology 208, no. 11 (June 1, 2005): ii. http://dx.doi.org/10.1242/jeb.01670.
40
Lv, Ying, and Jing Xie. "Effects of Freeze–Thaw Cycles on Water Migration, Microstructure and Protein Oxidation in Cuttlefish." Foods 10, no. 11 (October 26, 2021): 2576. http://dx.doi.org/10.3390/foods10112576.
Анотація:
This study was conducted to analyze the effects of multiple freeze–thaw (F-T) cycles on microstructural disruption, water migration, protein oxidation and textural properties of cuttlefish. Low-field nuclear magnetic resonance (LF-NMR) showed an increase in the proportion of free water in cuttlefish flesh. It was also observed by scanning electron microscopy (SEM) that multiple F-T cycles increased the gap between muscle fibers and disrupted the original intact and compact structure. The results of Fourier transform infrared spectroscopy, intrinsic fluorescence spectroscopy, Ca2+ATPase content, sulfhydryl content and free amino acid content indirectly prove that multiple F-T cycles can lead to the destruction of the a-helical structure of cuttlefish myofibril protein and the content of irregular curls increased, protein aggregation and degradation, and tryptophan oxidation. In addition, after repeated freezing and thawing, the water holding capacity, whiteness value, elasticity and chewiness of cuttlefish flesh decreased, the total volatile base nitrogen content increased. It can be concluded that the freeze–thaw cycles are very harmful to the quality of the frozen foods, so it is important to keep the temperature stable in the low-temperature food logistics.
41
Hall, Karina C., Anthony J. Fowler, Michael C. Geddes, and Julian D. Taylor. "Predictable spatiotemporal dynamics of a dense cuttlefish spawning aggregation increases its vulnerability to exploitation." ICES Journal of Marine Science 75, no. 1 (June 13, 2017): 221–34. http://dx.doi.org/10.1093/icesjms/fsx099.
Анотація:
Abstract The giant Australian cuttlefish, Sepia apama, forms a dense spawning aggregation at a single known location across its wide southern Australian distribution. After a rapid increase in fishing pressure on the aggregation in the late 1990s, a series of fishing closures were introduced before any biological information could be collected. We surveyed the habitats, timing, and spatial distribution of the spawning aggregation over 4 years, using underwater visual transects and passive tagging, to assess the suitability of the closures. We found that the annual aggregation was both temporally (April–August) and spatially (over 8 km of coastline) localized and predictable, with a consistent peak in abundances in late May–early June. Cuttlefish densities were generally highest over the shallow, broken bedrock habitat, which was more extensive in several sites left open to fishing. Although the original closure covered about 43% of the hard substrate, it accounted for only 23–37% of the total cuttlefish abundance. The extremely high densities recorded during this study verified that this is a massive spawning aggregation for cuttlefish species worldwide, and that it could be highly vulnerable to overexploitation in the absence of adequate protection, because it is so spatiotemporally predictable and localized.
42
Irianto, Komang Agung, and Suyenci Limbong. "Cytotoxic effect of natural cuttlefish bone xenograft: an in vitro and in vivo study." Medical Journal of Indonesia 29, no. 2 (June 30, 2020): 136–42. http://dx.doi.org/10.13181/mji.oa.203141.
Анотація:
BACKGROUND Commercialized synthetic bone grafts are commonly used to replace the bone defect. Cuttlefish bone is naturally available and widely studied, but the specific cytotoxicity test has not been conducted. This study aimed to evaluate the cytotoxicity of the xenograft compared to commercial grafts.
METHODS We performed an in vitro test evaluating the viability of human mesenchymal stem cells (hMSCs) when cultured for 48 hours with the tested materials (cuttlefish bone graft and fabricated PerOssal®). The trypsinized mitochondrial activity of the viable hMSC was assayed based on colorimetry of the formazan color change. The tested material was considered nontoxic if >70% of the hMSCs were viable. The in vivo cytotoxic effect was evaluated by implanting the graft material in the femoral muscle of New Zealand (NZ) white rabbits. Nine rabbits were used in each test (cuttlefish bone, PerOssal®, and NaCl 0.9%). The systemic acute pyrogenic effect was evaluated based on 72 hours body weight changes and rectal temperature changes every 30 min in the first 3 hours and 72 hours post-implantation.
RESULTS The mean percentage of hMSC viability when cultured with cuttlefish bone graft and PerOssal® was comparable (93.47% and 105.37%, respectively, p = 0.240). The in vivo cytotoxicity on NZ rabbit was similar between all tested materials, as shown by the minor changes in body weight (<10% body weight, p = 0.391) and rectal temperature (<0.5°C, p = 0.127).
CONCLUSIONS Cuttlefish bone xenograft and fabricated PerOssal® have a similar non-cytotoxic effects on hMSCs and non-pyrogenic systemic effects on rabbits.
43
Lv, Ying, Yuanming Chu, Pengcheng Zhou, Jun Mei, and Jing Xie. "Effects of Different Freezing Methods on Water Distribution, Microstructure and Protein Properties of Cuttlefish during the Frozen Storage." Applied Sciences 11, no. 15 (July 26, 2021): 6866. http://dx.doi.org/10.3390/app11156866.
Анотація:
To study the effect of different freezing methods on the quality changes of cuttlefish during the frozen storage of cuttlefish, fresh cuttlefish was treated with six freezing methods (refrigerator direct-freezing, saline solution impregnation freezing, flat freezing, tunnel type continuous freezing, air-blast freezing and liquid nitrogen freezing) and then stored at −18 °C for 90 days. The time to pass the maximum ice crystal generation zone for the above six freezing methods in this experiment was 165.5, 67.5, 34.5, 21.8, 20.4 and 1.5 min, respectively. In this study, water retention (thawing loss rate, centrifugal loss rate, and cooking loss), pH, malondialdehyde content, TVB-N value, and sulfhydryl content were measured to evaluate the quality after thawing. Protein secondary structure was measured by attenuated total reflection infrared spectroscopy (ATR-FTIR), water migration was determined by low-field NMR, and muscle microstructure was observed by scanning electron microscopy. The results showed that among the six freezing methods, liquid nitrogen freezing took the shortest time to pass through the maximum ice crystal generation zone. And it had the highest water retention, the lowest TVB-N content, the highest sulfhydryl content and the least irregular curling of protein secondary structure after 90 days of frozen storage. However, liquid nitrogen freezing can cause cracks and breakage in cuttlefish due to cryogenic fracture caused by ultra-low temperature, which affects its sensory evaluation. Although the freezing speed of flat freezing is faster than refrigerator direct-freezing and saline solution impregnation freezing, the muscle is extruded and deformed during the freezing process, and the damage is more serious, and the frozen storage quality is the worst. The comprehensive analysis results showed that the freezing speed of air- blast freezing was faster and the quality of cuttlefish in the freezing process was better, which was the more recommended freezing method, and this study provided some theoretical basis for the selection of freezing method in the actual production of cuttlefish.
44
Wang, Yang Wei, Zhen Long Wang, Jian Li, and Fei Gao. "Novel Design for a Biomimetic Water-Jetting Propulsion Vehicle Actuated by SMA Wires." Applied Mechanics and Materials 50-51 (February 2011): 73–77. http://dx.doi.org/10.4028/www.scientific.net/amm.50-51.73.
Анотація:
An experimental biomimetic water-jetting propulsion vehicle for robot cuttlefish is presented. Firstly the cuttlefish swimming mode and mantle muscle structure is analyzed as the theory basis. Secondly the vehicle is designed and manufactured. The vehicle is actuated by SMA wires. Through rational structural design, it can achieve flexible water-jetting propulsion like cuttlefish mantle. Thirdly the geometrical model of the biomimetic mantle cross section is built. At last, the performance of the propulsion machine is tested by experiment. The experimental results are mainly about the response curves of the mantle outside diameter, the strain of SMA wire and the swimming displacement with time. The maximum contractive distance of the biomimetic mantle along the vertical direction is 6 mm, the maximum strain of SMA wire is -1.8 %. The maximum swimming speed is 45 mm/s.
45
Kuo, Tzu-Hsin, Lynne U. Sneddon, Joseph W. Spencer, and Chuan-Chin Chiao. "Impact of Lidocaine on Pain-Related Grooming in Cuttlefish." Biology 11, no. 11 (October 24, 2022): 1560. http://dx.doi.org/10.3390/biology11111560.
Анотація:
Nociception is the neural process of encoding noxious stimuli and is typically accompanied by a reflex withdrawal response away from the potentially injurious stimulus. Studies on nociception in cephalopods have so far focused on octopus and squid, with no investigations to our knowledge on cuttlefish. Yet, these are an important species both in scientific and commercial use. Therefore, the present study demonstrated that a standard pain stimulus, acetic acid, induced grooming behaviour directed towards the injection site in cuttlefish and that the injection of lidocaine reduces grooming behaviours in acetic-acid-injected cuttlefish. Wound-directed behaviour demonstrates that the animal is aware of the damage; thus, when subjecting these animals to any painful treatments in the laboratory, researchers should consider alleviating pain by the administration of pain-relieving drugs.
46
Schnell, Alexandra K., Christelle Jozet-Alves, Karina C. Hall, Léa Radday, and Roger T. Hanlon. "Fighting and mating success in giant Australian cuttlefish is influenced by behavioural lateralization." Proceedings of the Royal Society B: Biological Sciences 286, no. 1898 (March 13, 2019): 20182507. http://dx.doi.org/10.1098/rspb.2018.2507.
Анотація:
Behavioural lateralization is widespread. Yet, a fundamental question remains, how can lateralization be evolutionary stable when individuals lateralized in one direction often significantly outnumber individuals lateralized in the opposite direction? A recently developed game theory model predicts that fitness consequences which occur during intraspecific interactions may be driving population-level lateralization as an evolutionary stable strategy. This model predicts that: (i) minority-type individuals exist because they are more likely to adopt unpredictable fighting behaviours during competitive interactions (e.g. fighting); and (ii) majority-type individuals exist because there is a fitness advantage in having their biases synchronized with other conspecifics during interactions that require coordination (e.g. mating). We tested these predictions by investigating biases in giant Australian cuttlefish during fighting and mating interactions. During fighting, most male cuttlefish favoured the left eye and these males showed higher contest escalation; but minority-type individuals with a right-eye bias achieved higher fighting success. During mating interactions, most male cuttlefish favoured the left eye to inspect females. Furthermore, most male cuttlefish approached the female's right side during a mating attempt and these males achieved higher mating success. Our data support the hypothesis that population-level biases are an evolutionary consequence of the fitness advantages involved in intraspecific interactions.
47
Beasley, Amanda L., Karina C. Hall, Coral I. Latella, Peter L. Harrison, Stephen G. Morris, and Anna Scott. "Reproductive characteristics of three small-bodied cuttlefish in subtropical waters." Marine and Freshwater Research 69, no. 3 (2018): 403. http://dx.doi.org/10.1071/mf17169.
Анотація:
Life history information for many commercially important cuttlefish is lacking, and thus the effects of long-term harvest remain unknown. The present study investigated the reproductive mode and seasonality of three small-bodied cuttlefish (Sepia opipara, S. plangon and S. rozella) in subtropical eastern Australia. Monthly samples were collected over 2 years and examined for gonadal development, size at sexual maturity, potential fecundity, size of mature oocytes and spermatophores, and temporal variation in maturity stages and gonadal weight relative to seawater temperature. All species showed reproductive characteristics consistent with a terminal multiple spawning mode, with S. opipara and S. rozella likely to be intermittent batch spawners, whereas S. plangon spawned continuously. Spawning occurred year round for all species, but S. opipara and S. rozella showed greater seasonality than S. plangon, peaking in autumn–spring. The biggest species, S. opipara, matured at a larger size than the others, had the greatest potential fecundity (the highest documented for any cuttlefish) and the largest spermatophore sizes. In contrast, S. rozella and S. plangon had much larger mature oocytes than S. opipara. These results further highlight the diversity of reproductive characteristics in cuttlefish, and the need for species-specific information for fishery and conservation management plans.
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Challier, Laurence, Matthew R. Dunn, and Jean-Paul Robin. "Trends in age-at-recruitment and juvenile growth of cuttlefish, Sepia officinalis, from the English Channel." ICES Journal of Marine Science 62, no. 8 (January 1, 2005): 1671–82. http://dx.doi.org/10.1016/j.icesjms.2005.06.006.
Анотація:
Abstract The cuttlefish Sepia officinalis is an important fishery resource in the English Channel, and one of the largest stocks of cephalopods in the Northeast Atlantic. Cuttlefish live for approximately 2 years and catches consequently depend largely on recruitment. Early life stages were analysed for differences in juvenile growth and age-at-recruitment to the commercial fisheries. Recruits were sampled monthly between October 2000 and June 2003, and pre-recruits from the coastal waters of the UK and France in the summers of 2000 and 2002. Age (days) was determined from statoliths. Although most cuttlefish were recruited during autumn, there was some recruitment throughout the year. Age-at-recruitment varied significantly between season and cohort, but was consistently in the range 3–4 months, so although there was some hatching throughout the year, most cuttlefish hatched during summer. Fitted growth models indicated that the growth rates of pre-recruits (7–59 mm mantle length) were significantly higher in 2002 than in 2000. Spatial differences in growth rate were apparent in 2000, suggesting that pre-recruit growth may depend on local environmental conditions. Pre-recruits and recruits combined (7–106 mm mantle length) also showed significant variation in growth between hatching months and years. Hypotheses explaining the observed patterns of growth and recruitment are presented.
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Chen, Sheng Jun, Lai Hao Li, Xian Qing Yang, Bo Qi, Yan Yan Wu, Hai Xia Ma, and Jian Chao Deng. "Composition and Nutritional Evaluation of the Cuttlefish Muscle." Advanced Materials Research 554-556 (July 2012): 1553–58. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1553.
Анотація:
The nutritional components in the cuttlefish muscle were analyzed and the nutritive quality was evaluated in the paper. The results showed that the contents of the cuttlefish muscle in crude protein, crude fat, carbohydrate were 16.60%, 0.86%, 1.30%, respectively. There were 18 kinds amino acids and the total amino acids reached 17.44%, with an essential amino acid index(EAAI) of 67.95. The composition of the essential amino acids in muscle ratio was consistent with the FAO/WHO standards. In addition, the contents of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids were 41.13%, 12.15% and 46.72%, respectively. And the muscle contains a higher content of EPA and DHA, reached 11.0% and 24.49%, respectively. It was considered that the cuttlefish muscle has a high nutritive value and it can be the important material of the high quality protein and unsaturated fatty acid.
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M. Nasir, Lalu Muhammad Imam Husaini, Agil Al Idrus, and Agus Ramdani. "Development of Science Student Worksheets based on the Bio-Ecology of Cuttlefish (Sepia sp.) Cultivation to Improve Science Literacy for Junior High School Students." Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram 9, no. 1 (June 30, 2021): 76. http://dx.doi.org/10.33394/j-ps.v9i1.3964.
Анотація:
The development of the science student worksheet based on the bioecology of cuttlefish (Sepia sp.) cultivation is an effort to improve the scientific literacy skills of students at the coastal village school of East Lombok. The purpose of this research is to produce student worksheet that is feasible, practical, and effective in improving students' literacy skills. This research is research and development using Thiagarajan 4D development model which includes design, define, develop, and disseminate stages. The research subjects consisted of 1 SMP/MTs equivalent in East Lombok which were determined using purposive sampling technique. The instruments used include validation sheets, student and teacher response questionnaires, and scientific literacy assessment instruments. The feasibility and practicality data were analyzed using the percentage formula, and the effectiveness data were analyzed using the N-gain analysis. The results showed that 1) student worksheet science based on the bioecology of cuttlefish cultivation (Sepia.sp) was feasible to use with an average score of 73 for the content/material aspect, 73 for the language aspect, and 85 for the appearance aspect, 2) science student worksheet based on the bioecology of cuttlefish cultivation. (Sepia sp.) is practically used with an average percentage of student responses of 81% and teacher responses of 88%, 3) student worksheet science based on the bioecology of cuttlefish cultivation (Sepia.sp) is effective in improving students' scientific literacy skills with an average N value -gain of 0.5 in the medium category. Thus, it can be concluded that the science student worksheet based on the bioecology of cuttlefish (Sepia sp.) cultivation is feasible, practical, and effective to use in science learning as an effort to improve the scientific literacy of junior high school students in coastal village schools in East Lombok.