Zeitschriftenartikel: „Sardinelles – Populations“

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Hunnam, Kimberley. „The biology and ecology of tropical marine sardines and herrings in Indo-West Pacific fisheries: a review“. Reviews in Fish Biology and Fisheries 31, Nr. 3 (10.04.2021): 449–84. http://dx.doi.org/10.1007/s11160-021-09649-9.

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AbstractTropical sardines and herrings (Family Clupeidae) form important fisheries resources in the Indo-West Pacific region. However knowledge of their biology and ecology is largely scattered across diverse localised studies. In addition, their challenging taxonomy due to numerous, morphologically similar species, coupled with data collected from dispersed, often small-scale and mixed species fisheries, creates difficulties for comparing species-level research and fisheries statistics across the region. This review considers four main groups of tropical marine clupeid species important for Indo-West Pacific fisheries—Sardinella (subg. Sardinella) species (‘Round-bodied Sardinellas’), Sardinella (subg. Clupeonia) species (‘Flat-bodied Sardinellas’), Amblygaster species (‘Tropical Pilchards’), and Herklotsichthys and Escualosa species (‘Tropical Herrings’)—and collates and synthesises existing knowledge on early life history, reproduction, trophic biology, habitat associations and population dynamics. Most research on tropical clupeid biology and ecology in the Indo-West Pacific is concentrated on the Round-bodied Sardinellas (S. longiceps and S. lemuru) from a few major fishery locations; other species-groups have been studied sporadically across their distributions. Characteristics such as maximum size, life span, size at first maturity and some habitat associations are generally similar within species-groups and differ between groups. However differences within the same reported species highlight the importance of continued work to improve taxonomic identification. There remain substantial gaps in knowledge on all species-groups. Regular critical review of specific research topics, such as reproductive parameters and population dynamics, would assist to standardise methods and terminology used, enable consolidation and comparison of findings, identify local research agenda, and help build and improve research on these important tropical species.

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Laksmi Sulmartiwi, Endang Dewi Masithah, Diana Meritasari, A. Shofy Mubarok,. „Pengaruh Pemberian Pupuk Cair Limbah Ikan Lemuru (Sardinella sp.) Dengan Dosis Yang Berbeda Terhadap Pertumbuhan Chlorella sp. [Effect Of Liquit Fertilizer Waste Sardinella Fish (Sardinella sp.) With Different Doses To The Chlorella sp. Growth]“. Jurnal Ilmiah Perikanan dan Kelautan 4, Nr. 1 (24.01.2019): 27. http://dx.doi.org/10.20473/jipk.v4i1.11579.

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Abstract Chlorella sp. can growth in various media that contains enough nutrients, such as N, P, K and other micro-elements. Growth of Chlorella sp. requires the availability of nutrients that can be derived from the chemical decomposition and solution results or waste. Liquid fertilizer waste sardinella fish (Sardinella sp.) is wasted and without any economic value is a new breakthrough in utilizing any part in the fisheries sector so as to maximize the potential of fisheries. Utilization of this, one of which is to make Liquid fertilizer waste sardinella fish (Sardinella sp.) which serve as nutrients for the growth of Chlorella sp. with 7 treatments and repeated 3 times. The treatment used is the doses of liquid fertilizer waste sardinella fish (Sardinella sp.) differently, namely A (0,25 ml/L), B (0,5 ml/L), C (1,75 ml/L), D (1 ml/L), E (1,25 ml/L), F (1,5 ml/L), G (Walne), H (without fertilizer). The results showed that the addition of liquid fertilizer waste sardinella fish (Sardinella sp.) with different doses give a real impact (p<0,05) for growth population of Chlorella sp. The best doses of liquid fertilizer waste sardinella fish (Sardinella sp.) for the population growth rate of Chlorella sp. was 0.75 ml / L is the treatment of C with the highest population of 3500x103 cells / ml.

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Untung, Melki, Faisal Amir und Moh Tauhid Umar. „Population Dynamics of Goldstripe Sardinella (Sardinella gibbosa) in the Waters of Barru Regency, Province South Sulawesi“. Agrikan Jurnal Agribisnis Perikanan 16, Nr. 1 (01.05.2023): 35–42. http://dx.doi.org/10.52046/agrikan.v16i1.1489.

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Goldstripe Sardinella (Sardinella gibbosa) is a type of small pelagic fish, of important economic value and is widely caught in the waters of Barru Regency which is the catch of lift net. This study aims to analyze the population dynamics of the Goldstripe Sardinella in the waters of Barru Regency, South Sulawesi. The data used in this study is primary data, namely direct data collection in the field in the form of measuring the length of the Goldstripe Sardinella sample. Sampling is carried out by measuring the catch of Goldstripe Sardinella using a stratified random sampling method . The number of Goldstripe Sardinella measured was 1,357 with a total length range of 100-190 mm. Found 3 age groups with average body length L1 = 116.4 mm , L2 = 145.4 mm, and L3 = 171 mm. L∞ = 211.0 mm, K = 0.50/year, and , t0 by -0.192 years. Z values = 1.69/year, M = 0.68/year with a water temperature of 29.8oC, and F = 1.01/year, as well as values E = 0.60 and Y/R’ = 0.0585 g/recruit. This value shows that in the waters of Barru Regency can be categorized as waters that have been overexploited, although the value of rapid growth, fishing activities are also high, and if continuous fishing is carried out without fishing arrangements, the stock of Goldstripe Sardinella will be reduced and even will experience extinction.

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Koroma, Ibrahim, und Svetlana Vasilievna Zolotokopova. „Significance of fish resources in nutrition of population of Sierra-Leone“. Vestnik of Astrakhan State Technical University 2022, Nr. 1 (31.05.2022): 30–36. http://dx.doi.org/10.24143/1812-9498-2022-1-30-36.

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The review provides an analysis of consuming fish resources by the population of Sierra Leone. It has been stated that consumption of fish resources per capita in Sierra Leone reached a high level (36.5 kg per capita) in 2008, while in 1961 the lowest level was observed - 11.4 kg. At the moment, the amount of fish consumed is gradually decreasing. According to a 2019 FAO study in Sierra Leone, fish accounts for 80% of the total animal protein consumed by the population. In the diet of the population of Sierra Leone, there is a deficiency of protein, vitamins and trace elements, which leads to an increase in a number of diseases. Fish is an excellent protein supplement to the grain-rich diet of the population and contains polyunsaturated fatty acids, vitamins and minerals necessary for humans. Ethmalosa fimbriata and Sardinella are the commercially important fish species in Sierra Leone, accounting for 46.54% and 16.42% of the population's consumption of commercial fish species, respectively. There was analyzed the biochemical composition of the commercial fish species (Ethmalosa fimbriata, Sardinella spp., Ilisha Africana, Elops spp., Dentex, Pseudotolithus elongates) in order to expand the range of food products.

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Koroma, Ibrahim, und Svetlana Vasilievna Zolotokopova. „Significance of fish resources in nutrition of population of Sierra-Leone“. Vestnik of Astrakhan State Technical University 2022, Nr. 1 (31.05.2022): 30–36. http://dx.doi.org/10.24143/1812-9498-2022-1-30-36.

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The review provides an analysis of consuming fish resources by the population of Sierra Leone. It has been stated that consumption of fish resources per capita in Sierra Leone reached a high level (36.5 kg per capita) in 2008, while in 1961 the lowest level was observed - 11.4 kg. At the moment, the amount of fish consumed is gradually decreasing. According to a 2019 FAO study in Sierra Leone, fish accounts for 80% of the total animal protein consumed by the population. In the diet of the population of Sierra Leone, there is a deficiency of protein, vitamins and trace elements, which leads to an increase in a number of diseases. Fish is an excellent protein supplement to the grain-rich diet of the population and contains polyunsaturated fatty acids, vitamins and minerals necessary for humans. Ethmalosa fimbriata and Sardinella are the commercially important fish species in Sierra Leone, accounting for 46.54% and 16.42% of the population's consumption of commercial fish species, respectively. There was analyzed the biochemical composition of the commercial fish species (Ethmalosa fimbriata, Sardinella spp., Ilisha Africana, Elops spp., Dentex, Pseudotolithus elongates) in order to expand the range of food products.

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Ying, Yiping, Tianxiang Gao und Zhenqing Miao. „Genetic differentiation of Japanese sardinella (Sardinella zunasi) populations in the Northwest Pacific revealed by ISSR analysis“. Journal of Ocean University of China 10, Nr. 4 (06.07.2011): 417–24. http://dx.doi.org/10.1007/s11802-011-1830-5.

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Hendiari, I. Gusti Ayu Diah, Aida Sartimbul, I. Wayan Arthana und Gde Raka Angga Kartika. „Keragaman genetik ikan lemuru (Sardinella lemuru) di wilayah perairan Indonesia“. Acta Aquatica: Aquatic Sciences Journal 7, Nr. 1 (04.04.2020): 28. http://dx.doi.org/10.29103/aa.v7i1.2405.

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Ikan Lemuru (Sardinella lemuru) merupakan komoditas perikanan pelagis yang sangat bernilai ekonomis dikalangan masyarakat Indonesia. Ikan Lemuru memiliki kelebihan yaitu keberadaannya yang berlimpah di perairan lau Indonesia, harganya yang sangat murah serta kandungan omega-3 yang sangat baik untuk tubuh. Kebutuhan akan ikan lemuru (Sardinella lemuru) yang tinggi menyebabkan tingginya angka penangkapan komoditas ini di perairain, sehingga dapat menyebabkan resiko penurunan jumlah populasi dialam. Pengelolaan yang tepat pada komoditas ini tentunya diperlukan akan dapat meminimalisir resiko yang dapat terjadi. Pengelolaan akan dapat terlaksana dengan tepat apabila berdasarkan atas data informasi yang memadai, salah satunya adalah informasi mengenai keragaman genetiknya. Kajian ini mengumpulkan pustaka dari penelitian terdahulu mengenai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia untuk dapat memberikan gambaran mengenai keragaman Ikan Lemuru dari segi genetiknya. Nilai keragaman genetik dilihat dari nilai keragaman haplotipe (Hd) karena keduanya memiliki kolerasi yang positif untuk menggambarkan keragaman genetik dari suatu komoditas. Hasil kajian memperlihatkan nilai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia memiliki nilai yang termasuk kategori tinggi. Hasil ini menggambarkan bahwa ditengah tingginya kegiatan penangkapan, ikan lemuru (Sardinella lemuru) secara genetik masih memiliki keragaman yang tinggi sehingga dimungkinkan komoditas Ikan Lemuru memiliki adaptasi yang tinggi terhadap kondisi lingkungan.Kata kunci: Sardinella lemuru, keragaman genetik, keragaman haplotipe Sardinella lemuru is pelagic commodities that have economic values for the Indonesian. S. lemuru has some of the major advantages, such as much population on Indonesian marine, low price, and has Omega-3 for the human body. The high demands of Lemuru Fish cause a high rate of cached, that can cause the risk of population degradation. Proper management of these commodities are needed to decrease the risk impact, that can be done rightly based on the equal value of information, and one of them is genetic diversity. This research compiles the recent researches about the genetic diversity of the Sardinella lemuru in Indonesian to get the explanation about Lemuru Fish diversity. The value of genetic diversity observed is based on the diversity value of Haplotype (Hd), because these two values have a positive correlation to make a whole representation from a commodity. The results of this review show that the genetic diversity of Lemuru Fish on Indonesian marine territorial has the high-value category. These results explain that in the high activities of fishing, Lemuru Fish genetically still have a high diversity that leads to the conclusion Lemuru Fish commodities has a high-level ability to adapt from environmental conditions.Keywords: Sardinella lemuru; genetic diversity; haplotype diversity

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Zotov, S. O., I. V. Zuev und Yu K. Chugunova. „First Data on the Biology of Least Cisco (Coregonus sardinella Vallenciennes, 1848) from the Kureyskoye Reservoir (Yenisey River Basin, East Siberia)“. Bulletin of Irkutsk State University. Series Biology. Ecology 44 (2023): 53–67. http://dx.doi.org/10.26516/2073-3372.2023.44.53.

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Nine large hydroelectric power plants have been put into operation within the Yenisey River basin, with two of them, Kureyskaya and Ust-Khantayskaya, located beyond the Arctic Circle. The Kureyskoye reservoir is a canyon-type reservoir with low temperatures, high flow rate and a distinctive oxygen regime. The main objective of this work is to perform stock assessment of the least cisco near the dam of the Kureyskoye Reservoir. In this research, biological stock characteristics of least cisco at the early stages of growth are presented for the first time. A sample of 199 individuals of least cisco was used. Fish were collected in July 2013, and in October-November 2016, 2018, 2019 in the water intake of the Kureyskaya dam, located in the southwestern part of the Kureyskoye Reservoir. The following stock characteristics were studied for the captured least cisco individuals: total length (TL, mm), fork length (FL, mm), standard length (SL, mm), body weight (W, g), sex, age of maturity. To determine the age of the fish, scales were used, selected on the part of the body between the lateral line and the dorsal fin, to count the number of sclerites in the annual rings. Individual absolute (IAF) and relative fertility (IRF) were evaluated by the volume-weight method for 20 females captured in 2019. The results of determining the age of fish were used to calculate the parameters of the von Bertalanfi growth equation. All statistical calculations were carried out in the R 4.2.3 environment using the FSA package (Ogle, 2016). The asymptotic length (FLinf), calculated with the von Bertalanfi equation, is 177.08±2.18, K (growth rate) = 1.19±0.14; t0 = 0.22±0.07. The studied least cisco becomes sexually mature at the age of 4.37±0.69 years. The individual absolute fertility (IAF) of the least cisco varies between 3031-7244 eggs, for which the mean is 5369±1007. Individual relative (IRF) fertility varies from 59 to 117, on average 89 ± 15 eggs per 1 g of female weight. Thus, the modern population of least cisco in the Kureyskoye Reservoir is characterized by a lower growth rate than in similar reservoirs, and in comparison with river forms. The existing growth rate makes it possible for fish to potentially reach sizes up to 17 cm, but the real population is mainly represented by fish of small size groups. Fertility indicators are within the limits for similar populations of the Siberian canyon-type reservoirs.

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Bräger, Zs, T. Moritz, A. C. Tsikliras, J. Gonzalvo, M. Radulović und Á. Staszny. „Scale morphometry allows discrimination of European sardine Sardina pilchardus and round sardinella Sardinella aurita and among their local populations“. Journal of Fish Biology 88, Nr. 3 (29.01.2016): 1273–81. http://dx.doi.org/10.1111/jfb.12907.

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De-Donato, M. „Low genetic differentiation among sardine populations, Sardinella aurita, from eastern Venezuela“. Ciencias Marinas 31, Nr. 3 (01.08.2005): 529–35. http://dx.doi.org/10.7773/cm.v31i3.44.

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Pertiwi, Ni Putu Dian, Ida Ayu Purnama Bestari, M. Danie Al Malik und Mark Anthony Phuong. „Population Analysis of Bali Sardinella (Sardinella lemuru, Bleeker 1853) Landed in PPI Kedonganan using Length-Weight Data and Digital Analysis (ImageJ)“. ILMU KELAUTAN: Indonesian Journal of Marine Sciences 28, Nr. 1 (21.02.2023): 90–96. http://dx.doi.org/10.14710/ik.ijms.28.1.90-96.

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Sardinella lemuru, one of the important pelagic fish in Bali Strait waters, has been reported to be in the overfishing condition. Various studies have been conducted to understand its population condition. Length-weight data has been also widely used to understand the population dynamic of S. lemuru, although data collection generally using manual direct measurement methods, which has the disadvantages if used on the enormous number of samples. Therefore, this research aims to understand the significance of S. lemuru length measurement using digital image analysis (ImageJ) compared with the manual measurement. Moreover, this research also aims to understand the population condition of S. lemuru landed in PPI Kedonganan analyzed using its length-weight data. The result indicated no significance difference between length measurement using manual methods and digital image methods, thus conclude that digital image data can be used to measure the fish length and represent the accurate measurement. Population condition analysis showed that S. lemuru population is in isometric condition (b=3); with indication of declining in the length growth pattern compared with previous research (L∞= 20.75 cm with K= 1.1); the mortality estimation showed that fishing mortality (F=1.27) was lower than natural mortality (M=2.22), with the survival rate higher on smaller size fish. This research result can be used as an addition to the S. lemuru fisheries data and can also be used as reference methods to help conduct sampling and data collection more efficiently.

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Amponsah, Samuel KK, Patrick K. Ofori Danson, Francis KE Nunoo und Godfred A. Ameyaw. „Population dynamics of Sardinella aurita (Val., 1847) within Ghana’s coastal waters“. Research in Agriculture Livestock and Fisheries 4, Nr. 3 (29.12.2017): 237–48. http://dx.doi.org/10.3329/ralf.v4i3.35103.

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Following the declining stocks of Sardinella aurita within the coastal waters of Ghana, this study aimed at examining some population parameters of Sardinella aurita as a guide for managing this important stock sustainably. Length-frequency data of 717 samples were obtained from June, 2014 to January 2015 and measured for total length with the resultant data analyzed using FiSAT II. The asymptotic length (L∞) and growth rate (K) were 21.53 cm SL and 0.25yr-1 respectively. The theoretical age at birth (t0), longevity (tmax) and growth performance index (ϕ) were -0.74yr-1, 12 years and 1.849 respectively. Total mortality rate (Z), natural mortality rate (M) and fishing mortality rate (F) were 3.17, 0.76 and 2.41yr-1 respectively. The ages at first recruitment and first capture signaled future collapse of the stock, in the absence of proper management interventions. VPA outcome showed that mid- lengths of 11 cm and 12 cm SL experienced the highest harvesting rate with MSY estimated at 7733 tons. The recruitment pattern was continuous with two major recruitment pulses. Exploitation rate (Ecurr=0.76) was higher than the maximum exploitation rate (Emax=0.56), indicating unsustainable exploitation. Further, the fishing regime fell within the overfished stage based on the Quadrant Rule. For sustainable exploitation of this commercial fish species, implementation of relevant biological reference points through reduction in fishing efforts, creation of marine protected areas and mesh size regulation are urgently advocated.Res. Agric. Livest. Fish.4(3): 237-248, December 2017

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CABUGA JR, Cresencio, Jojean Marie PONDANG, Roy PILOTON, Aibie Jel CORNITES, Penelope EJADA, Mafi Kamille ANGCO und Owen Lloyd P. OBENZA. „Intraspecific Shape Analysis of Bali Sardinella (Sardinella lemuru) Using Geometric Morphometrics Collected in the Coast of Cabadbaran, Agusan Del Norte, Philippines“. Marine Science and Technology Bulletin 12, Nr. 4 (25.12.2023): 495–504. http://dx.doi.org/10.33714/masteb.1321082.

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Modern techniques are often applied to analyze the body shape differences among biological organisms. Also, taxonomy and systematics are two essential fields of Biology concerning shape discrimination. This study aims to identify the shape variations of Sardinella lemuru (Bali sardinella) using Symmetry Asymmetry Geometric Data (SAGE) Software Application. A total of 70 fish samples consisting of 35 males and 35 females were collected in Barangay Caasinan, Cabadbaran, Agusan Del Norte, Philippines. Standard laboratory procedures were done and fish samples were subjected to the analysis. Procrustes ANOVA revealed a highly significant difference (P<0.0001) among the components analyzed (individuals, sides, and individuals vs. sides). This implied that each of the fish samples exhibited different body shapes. Principal Component Analysis (PCA) obtained a high rate of Interaction/Fluctuating Asymmetry (76.79%) in males when compared to female samples (74.08%). The shape dissimilarities within the populations were associated with genetic components, ecological adaptations-swimming, predator escape, and resource competition. Thus, the present study identified shape disparity within the fish populations. The development of employing modern techniques enhances scientific methods to quantify shape dissimilarities among species individuals and assemblages.

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Kinsey, S. T., T. Orsoy, T. M. Bert und B. Mahmoudi. „Population structure of the Spanish sardine Sardinella aurita: natural morphological variation in a genetically homogeneous population“. Marine Biology 118, Nr. 2 (Januar 1994): 309–17. http://dx.doi.org/10.1007/bf00349798.

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Sukumaran, Sandhya, Wilson Sebastian und A. Gopalakrishnan. „Population genetic structure of Indian oil sardine, Sardinella longiceps along Indian coast“. Gene 576, Nr. 1 (Januar 2016): 372–78. http://dx.doi.org/10.1016/j.gene.2015.10.043.

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Nikulina, Y. S., und K. V. Polyaeva. „Morphology, biology and parasite fauna of the least cisco (Coregonus sardinella) of the Yenisei River“. Biosystems Diversity 28, Nr. 3 (07.08.2020): 230–37. http://dx.doi.org/10.15421/012030.

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In the present study, we present an analysis of the morphological and ecological characteristics of the “turukhanskaja” form of the Siberian least cisco of the Yenisei River, including the characters of the size-age, sexual composition of the population, fecundity and growth. The variability of 34 morphological characters was studied. Significant differences were noted between males and females of the least cisco of the Yenisei River for 11 morphometric characters (head length, maximum body depth, caudal peduncle length, antepectoral distance, dorsal fin base length and dorsal fin depth, anal fin base length, pectoral fin length, head width, head (at nape), interorbital width). Significant differences in meristic characters were revealed in comparison of the least cisco from the Yenisei River with populations of Siberian least cisco from other water bodies. It was shown that the Yenisei least cisco is close to the European vendace Coregonus albula Linnaeus, 1758 not only according to cluster hierarchical analysis for some meristic and morphometric features but also in terms of growth and fecundity. In general, the Yenisei least cisco, as well as other populations of least cisco of the Taimyr, is characterized by heterogeneity in the structure of populations. The parasite fauna of Yenisei’s Siberian cisco, captured in the area of Dudinka town, consists of 17 species of parasites from seven systematic groups. It is dominated by Diphyllobothrium ditremum (Creplin, 1825) and Discocotyle sagittata (Leuckart, 1842). The feature of the parasite fauna of least cisco from Yenisei River in comparison with the Ob River (neighbouring water basin) is a low infection with trematodes and a high species diversity of Acanthocephala. The reason for the low infection with trematodes may be differences in the hydrological conditions of the water bodies, which in the Yenisei are unfavourable for the development of intermediate hosts of trematodes. Siberian cisco from the Yenisei River is a carrier of Diphyllobothrium dendriticum (Nitzsh, 1824), a species that can cause human disease.

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Sebastian, Wilson, Sandhya Sukumaran, P. U. Zacharia und A. Gopalakrishnan. „Genetic population structure of Indian oil sardine, Sardinella longiceps assessed using microsatellite markers“. Conservation Genetics 18, Nr. 4 (24.02.2017): 951–64. http://dx.doi.org/10.1007/s10592-017-0946-6.

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Prasetyo, Andhika Prima, und Rudy Masuswo Purwoko. „INTER-SPECIFIC COMPETITION AND FISHING EFFECT TO POPULATION DYNAMIC OF BALI SARDINE (SARDINELLA LEMURU)“. Indonesian Fisheries Research Journal 22, Nr. 2 (24.01.2017): 85. http://dx.doi.org/10.15578/ifrj.22.2.2016.85-90.

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Stock-recruitment relationship of Bali sardine was investigated based on Beverton-Holt model by assuming inter-specific competition. Model is modified to incorporate the effect of fishing pressure that is density-independent to population dynamic by developing scenario fishing on adult and/or juvenile population. The results show that harvested adult the dramatic decline of recruitment supply. However, harvested juvenile is led to the positive response to population size, as an increase in fishing mortality rate will reduce competition mortality rate. Precautionary approach required by considering bipartite life cycle.

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Biradar, R. S., und J. Gj∅ossélig;ter. „Population dynamics of Indian oil sardine, Sardinella longiceps, off the southwest coast of India“. Journal of Applied Ichthyology 5, Nr. 4 (Dezember 1989): 185–93. http://dx.doi.org/10.1111/j.1439-0426.1989.tb00491.x.

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Platonov, Terenty, Konstantin Stepanov, Ayan Nyukkanov, Natalia Kuzmina und Anna Gorokhova. „Food value and basic parasitosis of fish used in food by indigenous populations of Yakutia“. BIO Web of Conferences 17 (2020): 00242. http://dx.doi.org/10.1051/bioconf/20201700242.

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The article presents the results of studies of nutritional value and the degree of infection with parasitoses of Siberian vendace (Coregonus sardinella Vallenciennes, 1848) and Yakut crucian carp (Carassius carassius jacuticus Kirillov, 1972). By the amount of protein, the Siberian vendace is classified as medium-protein, in terms of fat content, it is especially fatty fish and of high calories. It has been established that a distinctive feature of the Yakut crucian carps compared to European ones is high fat content (up to 10 % versus 2.5 %), high content of polyunsaturated fatty acids, macro- and microelements, vitamins, and have high energy value. The most common parasitic diseases of the crucian carp and vendace, affecting the quality and appearance of the fish, are myxosporidioses caused by Myxobolus, digramosis and phylometroidosis, the negative impact on the quality of which depends on the parasite infection intensity.

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Wilson Jr., Raymond R., und Peter D. Alberdi Jr. „An Electrophoretic Study of Spanish Sardine Suggests a Single Predominant Species in the Eastern Gulf of Mexico, Sardinella aurita“. Canadian Journal of Fisheries and Aquatic Sciences 48, Nr. 5 (01.05.1991): 792–98. http://dx.doi.org/10.1139/f91-095.

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Specimens of Sardinella obtained from four sites around Florida, USA, were compared electrophoretically with 41 Brazilian specimens at between 36 and 41 presumptive genetic loci in an attempt to determine whether two electrophoretically distinct species of Spanish sardine are present in the eastern Gulf of Mexico. The study found no electrophoretic evidence for two species either in Florida waters or in waters off of Brazil, with both areas predominantly, if not exclusively, represented by S. aurita Valenciennes. Very low polymorphism in S. aurita hindered extensive comparisons of allelic frequencies between Florida and Brazilian specimens; however, significant differences among allele frequencies were detected between Florida populations although not between Florida and Brazilian populations.

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Ginzel, Fanny Iriany, Diah Permata Wijayanti, Subagiyo und Agus Sabdono. „Growth and Mortality, Recruitment and Exploitation Rate of Fringescale Sardinella Sardinella fimbriata (Valenciennes 1847) in Rote Island in the Savu Sea“. Croatian Journal of Fisheries 80, Nr. 4 (01.12.2022): 189–96. http://dx.doi.org/10.2478/cjf-2022-0019.

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Abstract Fringescale sardinella is one of the largest fishery resources and has the highest economic value in the Savu Sea. The increasing demand for this fish makes it one of the main fishing targets, which allows overfishing to occur. Therefore, the purpose of this study was to determine the population dynamics of sardinella fringescale through growth and mortality, recruitment and exploitation rate of fringescale sardinella in Rote Island in the Savu Sea. A total of 1095 fish sampled from Rote Island were assessed and showed the total length (TL) range from 90 mm to 157 mm. Further, the data were analyzed using FISAT II software with the following results: the length-weight relationship was W= 0.0004L2.2523, while the negative allometric growth pattern and growth equation was Lt = 165.26 (1 - exp1,500 (t + 0.0585)). The age of S. fimbriata consisted of 1-2 cohorts. Recruitment of S. fimbriata in Rote Island occurred throughout the year with the highest peaks in May and August. The size of the first caught fish (Lc) was 96.98 mm TL. The total mortality rate (Z) was 2.41 yr-1, natural mortality (M) was 1.45 yr-1 and fishing mortality (F) was 0.97 yr-1. The exploitation rate of S. fimbriata is estimated at 0.40 yr-1; this implies that the stock does not exceed the optimum exploitation rate (E = 0.5) or that overfishing has not occurred in the Savu Sea. Nevertheless, this study’s results are sufficiently robust to anticipate that the unprecedented overexploitation of S. fimbriata in Rote Island has nearly occurred. Therefore, regular monitoring and surveillance of surface gillnet fishing gear are urgently needed.

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Amponsah, Samuel K. K., Patrick K. Ofori-Danson, Francis K. E. Nunoo und Godfred A. Ameyaw. „Estimates of Population parameters for Sardinella maderensis (Lowe, 1838) in the coastal waters of Ghana“. Greener Journal of Agricultural Sciences 9, Nr. 1 (31.01.2019): 23–31. http://dx.doi.org/10.15580/gjas.2019.1.011719017.

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Bintoro, Gatut, Daduk Setyohadi, Tri Djoko Lelono und Fitri Maharani. „Biology and population dynamics analysis of fringescale sardine (Sardinella fimbriata) in Bali Strait waters, Indonesia“. IOP Conference Series: Earth and Environmental Science 391 (19.12.2019): 012024. http://dx.doi.org/10.1088/1755-1315/391/1/012024.

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Monney, Urbain Yapo, Vandjiguiba Diaby, Brice Kouakou Bla, Ange N’Dri Kouakou Gbe Konan und Adou Francis Yapo. „Analyse socio-sanitaire du fumage de poisson dans la ville d’Abidjan (Côte d’Ivoire)“. International Journal of Biological and Chemical Sciences 15, Nr. 6 (22.02.2022): 2337–48. http://dx.doi.org/10.4314/ijbcs.v15i6.8.

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La transformation de poissons frais en poissons fumés et sa commercialisation constituent pour les femmes une activité de subsistance en Côte d’Ivoire et plus particulièrement dans la capitale économique (Abidjan). Pour améliorer la dynamique de la filière de transformation, des enquêtes socio-sanitaires ont été réalisées sur 4 sites dont 2 sites de transformation et 2 sites de commercialisation durant 1 mois, de mars à avril 2019. Le travail de terrain a consisté à une interview de la population cible sur leurs sites de travail. Elle a reposé sur un questionnaire portant sur le statut social des commerçants, les types de poissons vendus et fumés, la technique de fumage ainsi que les difficultés du métier. Au total, 120 acteurs de la filière ont été interrogés. Les résultats ont montré que ces acteurs principalement des femmes étaient pour la plupart analphabètes. Ces femmes utilisaient la méthode de fumage de type artisanal faisant intervenir comme matériaux, un grillage, posé sur une barrique coupée vers le milieu (fumoir circulaire) et comme combustible le bois d’hévéa combiné parfois à des coques de coco. 13 espèces de poissons à forte valeur économique, parmi lesquelles les trois (3) espèces les plus fumés et commercialisées sur le site Vridi Zimbabwe étaient les poissons Scomber scombrus (28%), Sardinella maderensis (27%), et Euthynnus alletteratus (24%). Par contre sur le site Abobo Doumé, les espèces les plus fumés et commercialisées étaient respectivement Sardinella maderensis (29%), suivi Scomber scombrus (27%), de Ephinephelu aeneus (26%). Ces femmes travaillent dans des conditions pénibles avec des moyens rudimentaires. L’exposition intense et répétée à la fumée et à la chaleur a provoqué chez ces transformatrices,des maux d’yeux, la toux, des céphalées et des démangeaisons cutanées. Bien que cette filière procure des emplois et est une source de revenu pour la population locale, elle présente cependant des risques de santé pour les transformatrices et les consommateurs. English title: Socio-sanitary analysis of fish smoking in the city of Abidjan (Ivory Coast) The processing of fresh fish into smoked fish and its marketing is a subsistence activity for women in Côte d'Ivoire and more particularly in the economic capital (Abidjan). In order to improve the dynamics of the processing sector, socio-sanitary surveys were conducted on 4 sites, including 2 processing sites and 2 marketing sites, during 1 month, from March to April 2019. The fieldwork consisted of an interview of the target population on their work sites. It was based on a questionnaire on the social status of the traders, the types of fish sold and sorted, the smoking technique and the difficulties of the trade. A total of 120 actors in the sector were interviewed. The results showed that these actors, mainly women, were mostly illiterate. These women used the artisanal smoking method, using as materials, a wire mesh, placed on a barrel cut in the middle (circular smoker) and as fuel rubber wood combined sometimes with coconut shells. 13 species of fish with high economic value, among which the three (3) most smoked and commercialized species at the Vridi Zimbabwe site were Scomber scombrus (28%), Sardinella maderensis (27%), and Euthynnus alletteratus (24%). On the other hand, at the Abobo Doumé site, the species most smoked and marketed were Sardinella maderensis (29%), followed by Scomber scombrus (27%), and Ephinephelu aeneus (26%). These women work in harsh conditions with rudimentary means. Intense and repeated exposure to smoke and heat has caused these women to suffer from sore eyes, coughing, headaches and itchy skin. Although this industry provides employment and income for the local population, it poses health risks for processors and consumers.

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Savchuk, P. Yu, und V. E. Tunev. „Fishing and stock assessment of the Siberian Cisco Coregonus sardinella (Coregonidae) in the Gydan basin“. Problems of Fisheries 24, Nr. 2 (09.08.2023): 28–41. http://dx.doi.org/10.36038/0234-2774-2023-24-2-28-41.

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This study provides information on the long-term catch and fishing structure of the Sardine cisco Coregonus sardinella in the Gydan basin. A brief biological characteristic of the species is presented. Using the population model CMSY estimates of the size of the Siberian grouse stock and guidelines for managing its fishery were obtained. The model values of biomass turned out to be close to the results of studies in the 1980s.Based on the data obtained, a conclusion is made about the high number of siberian cisco in the basin under consideration. Various forecast scenarios for further management of the fishery are proposed.

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Chikhi, Lounès, Jean-François Agnèse und François Bonhomme. „Fortes différences des ADN mitochonclriaux de populations de Sardinella aurita de la mer Méditerranée et de l'Atlantique Est“. Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie 320, Nr. 4 (April 1997): 289–97. http://dx.doi.org/10.1016/s0764-4469(97)82770-9.

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Borovikova, Elena, und Yulia Nikulina. „The Contact Zone of Phylogenetic Lineages of Freshwater Fish in Arctic Eurasia: Genetic Polymorphism of Coregonid Populations“. Diversity 15, Nr. 2 (24.01.2023): 163. http://dx.doi.org/10.3390/d15020163.

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The reconstruction of regional fauna history is very important in the context of recent climate change and anthropogenic transformation. We analyzed the mitochondrial nd1 gene polymorphism in populations of whitefish Coregonus lavaretus and certain widespread Eurasian ciscoes species: vendace Coregonus albula and least cisco Coregonus sardinella, inhabiting waterbodies from the Anadyr River in the east (the Pacific Ocean basin) to Loch Lomond in the west (the Atlantic Ocean basin). Distinct phylogenetic lineages and secondary contact zones have been found in these species. Most of these are species-specific with the exception of the zone from the Pechora River basin to at least the western part of the Taymyr Peninsula, in which whitefish, vendace, and least cisco share with each other and with various cold-water hydrobionts. We associate differences in the geographical position and propagation of the secondary contact regions with the species-specific morpho-ecological features, in particular, with the ability for long-term migrations. Based on the data obtained, we also discuss certain limitations of the phylogeography and phylogeny of the considered coregonid species and the correctness of the taxonomic status of certain populations or their groups.

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Fauzi, Moh, Tirtadanu, Andina Ramadhani Putri Pane, Siti Mardlijah, Tegoeh Noegroho, Achmad Zamroni, Thomas Hidayat et al. „Population dynamics and stock status of spotted sardinella (Amblygaster sirm, Walbaum, 1792) in the Natuna Sea, Indonesia“. Fisheries and Aquatic Sciences 27, Nr. 4 (April 2024): 256–64. http://dx.doi.org/10.47853/fas.2024.e25.

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Lampert, Yael, Ran Berzak, Nadav Davidovich, Arik Diamant, Nir Stern, Aviad P. Scheinin, Dan Tchernov und Danny Morick. „Indigenous versus Lessepsian Hosts: Nervous Necrosis Virus (NNV) in Eastern Mediterranean Sea Fish“. Viruses 12, Nr. 4 (10.04.2020): 430. http://dx.doi.org/10.3390/v12040430.

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Viruses are among the most abundant and diverse biological components in the marine environment. In finfish, viruses are key drivers of host diversity and population dynamics, and therefore, their effect on the marine environment is far-reaching. Viral encephalopathy and retinopathy (VER) is a disease caused by the marine nervous necrosis virus (NNV), which is recognized as one of the main infectious threats for marine aquaculture worldwide. For over 140 years, the Suez Canal has acted as a conduit for the invasion of Red Sea marine species into the Mediterranean Sea. In 2016–2017, we evaluated the prevalence of NNV in two indigenous Mediterranean species, the round sardinella (Sardinella aurita) and the white steenbras (Lithognathus mormyrus) versus two Lessepsian species, the Randall’s threadfin bream (Nemipterus randalli) and the Lessepsian lizardfish (Saurida lessepsianus). A molecular method was used to detect NNV in all four fish species tested. In N. randalli, a relatively newly established invasive species in the Mediterranean Sea, the prevalence was significantly higher than in both indigenous species. In S. lessepsianus, prevalence varied considerably between years. While the factors that influence the effective establishment of invasive species are poorly understood, we suggest that the susceptibility of a given invasive fish species to locally acquired viral pathogens such as NVV may be important, in terms of both its successful establishment in its newly adopted environment and its role as a reservoir ‘host’ in the new area.

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Longhurst, Alan R., und Warren S. Wooster. „Abundance of Oil Sardine (Sardinella longiceps) and Upwelling on the Southwest Coast of India“. Canadian Journal of Fisheries and Aquatic Sciences 47, Nr. 12 (01.12.1990): 2407–19. http://dx.doi.org/10.1139/f90-268.

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The abundance of oil sardine (Sardinella longiceps) on the Malabar coast is highly variable on the decadal scale. During this century there have been several periods of relatively high abundance, and several major population crashes. O-group recruitment to the fishery begins towards the end of the summer monsoon, and its success is statistically related to sea level at Cochin just prior to onset of the monsoon. At this time, sea level indicates remote forcing of upwelling, rather than the wind-driven upwelling that occurs during the monsoon. Unusually early remote-forcing appears to inhibit subsequent recruitment, perhaps through exclusion of spawning fish from the neritic zone by oxygen-deficient upwelled water.

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Pawson, Michael G., und Mohammed S. Giama. „A biological sampling problem illustrated by the population structure and growth patterns of Sardinella aurita at Tripoli, Libya“. Environmental Biology of Fishes 12, Nr. 2 (Februar 1985): 143–54. http://dx.doi.org/10.1007/bf00002767.

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Barman, Partho Protim, Qun Liu, Md Abdullah Al-Mamun, Petra Schneider und Mohammad Mojibul Hoque Mozumder. „Stock Assessment of Exploited Sardine Populations from Northeastern Bay of Bengal Water, Bangladesh Using the Length-Based Bayesian Biomass (LBB) Method“. Journal of Marine Science and Engineering 9, Nr. 10 (16.10.2021): 1137. http://dx.doi.org/10.3390/jmse9101137.

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Stock assessment is necessary to understand the status of fishery stocks. However, for the data-poor fishery, it is very challenging to assess the stock status. The length-based Bayesian biomass (LBB) technique is one of the most powerful methods to assess the data-poor fisheries resources that need simple length frequency (LF) data. Addressing the present gap, this study aimed to assess the stock status of three sardines (Sardinella fimbriata, Dussumieria acuta, and D. elopsoides) in the Bay of Bengal (BoB), Bangladesh using the LBB method. The estimated relative biomass for S. fimbriata was B/B0 < BMSY/B0, indicating the overfished biomass, while the assessed B/B0 > BMSY/B0 for D. acuta and D. elopsoides indicates healthy biomass. Additionally, for S. fimbriata, the length at first landing was smaller than the optimum length at first landing (Lc < Lc_opt), indicating an overfishing status, but a safe fishing status was assessed for D. acuta and D. elopsoides (Lc > Lc_opt). Therefore, increasing the mesh size of fishing gears may help to ensure the long-term viability of sardine populations in the BoB, Bangladesh.

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Cinco, J. G., J. Farma, J. D. Silvosa, C. B. Weling und J. T. Cuadrado. „Fluctuating Asymmetry and Length-Weight Relationship of the Three Populations of Sardinella lemuru (Clupeiformes, Dorosomatidae) from Surigao del Norte, Philippines“. zoodiversity 57, Nr. 4 (2023): 293–300. http://dx.doi.org/10.15407/zoo2023.04.293.

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Despite its economic importance and current conservation status, studies on Sardinella lemuru (Bleeker, 1853) are very scarce in the province of Surigao del Norte, Philippines, so this study was conducted to assess the body shape and health status of fish populations in the area using fluctuating asymmetry (FA) and length-weight ratio (LWR) analyses. 258 individuals were collected from the coastal waters of Malimono (n = 6), San Francisco (n = 101) and Surigao (100) from August to October 2021 using fishnets and gillnets. Among the three populations, fish samples from Malimono have the highest cumulative variation of 63.07 % followed by San Francisco and Surigao City (60.85 % and 55.51 %). The high percentage of FA among the three populations (57.66 % in Malimono; 54.43 % in San Francisco; and 49.78 % in Surigao City) also suggests that individuals had deformities particularly, especially in the fins and head region of the fish. The LWR of the fish samples (b = 2.6398 in Malimono; b = 2.7541 in San Francisco; and b = 2.8377 in Surigao City) indicates a negative allometric growth pattern, suggesting that the fish samples do not grow symmetrically or become thinner with increasing length. The results of FA and LWR analyses suggest morphological abnormalities in the fish samples that may be attributed to the different environmental stressors in the area. Studies on sex differences, water quality and fish ecology are suggested to better understand the current status of fish in the area.

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A. El-Betar, Tamer, und Hanan M. Osman. „Population structure of Sardinella gibbosa (Bleeker, 1849) with special reference to spawning ground in the Gulf of Suez, Egypt“. Egyptian Journal of Aquatic Biology and Fisheries 25, Nr. 3 (01.05.2021): 353–65. http://dx.doi.org/10.21608/ejabf.2021.175579.

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Bintoro, G., T. D. Lelono und L. Deafatmi. „Biological aspect and dynamic population of fringescale sardine (Sardinella fimbriata: Valenciennes, 1847) in Prigi waters Trenggalek, East Java, Indonesia“. IOP Conference Series: Earth and Environmental Science 493 (19.06.2020): 012017. http://dx.doi.org/10.1088/1755-1315/493/1/012017.

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Massone, Carlos German, Allan Amendola dos Santos, Pedro Gonçalves Ferreira und Renato da Silva Carreira. „Persistent Organic Pollutants (POPs) in Sardine (Sardinella brasiliensis): Biomonitoring and Potential Human Health Effects“. International Journal of Environmental Research and Public Health 20, Nr. 3 (22.01.2023): 2036. http://dx.doi.org/10.3390/ijerph20032036.

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Organochloride (OC) and polychlorinated biphenyl (PCB) concentrations were determined in the muscle tissue of fifty sardine samples (Sardinella brasiliensis) sampled off the south-east Brazilian shelf. The aim herein was to investigate OCs and PCBs composition profile, bioaccumulation potential and human risks. The concentrations of 18 organochlorine pesticides (OCPs) were below the method limit of quantification in most samples (ca. 94%), with few detected, namely δ-HCH, γ-HCH, Endosulfan I and II, Endosulfan Sulphate, DDE, Dieldrin, Endrin, Endrin Aldeide, Endrin Cetone and Metoxyclor. The median concentration for the Σ41 PCBs was 2.32 ng g−1 , ranging from values below the limit of quantification (<LOQ) to 37.2 ng g−1. Based on the analyzed samples, the concentrations reported herein do not represent a risk for human consumption according to both national and international guidelines, nor do OC and PCB bioaccumulation in sardines appear to be a concern at the moment. These findings, although preliminary, represent a baseline for future comparisons of the quality of an important source of protein available to the poorest Brazilian population strata.

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FORTIČ, ANA, REEM AL-SHEIKH RASHEED, ZOUHAIR ALMAJID, ALI BADREDDINE, JOSÉ CARLOS BÁEZ, ANGEL BELMONTE-GALLEGOS, NICOLA BETTOSO et al. „New records of introduced species in the Mediterranean Sea (April 2023)“. Mediterranean Marine Science 24, Nr. 1 (07.04.2023): 182–202. http://dx.doi.org/10.12681/mms.34016.

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This Collective article reports 17 introduced species and 22 new locations for these species in the Mediterranean Sea. The reports are from three different Marine Strategy Framework Directive (MSFD) subregions (Aegean-Levantine Sea, Adriatic Sea and Western Mediterranean Sea) and the Sea of Marmara and cover ten different countries. The goal of consistent and detailed reporting of introduced species is to complement the existing species inventories and serve as a basis for establishing monitoring strategies and other conservation measures. Some of the reports from this article are the first species records for the Mediterranean Sea, namely the green alga Udotea flabellum from the Aegean Sea (Turkey) and the deepbody boarfish Antigonia capros from the Balearic Sea (Spain). In addition, new records of introduced species are included for different seas, namely the moon crab Matuta victor for the Aegean Sea (Greece), the whale shark Rhincodon typus and the lionfish Pterois miles for the Alboran Sea (Spain), the almaco jack Seriola rivoliana for the Tyrrhenian Sea (Italy), and the hound needlefish Tylosurus crocodilus for the Adriatic Sea (Italy). Furthermore, reports on first country records are included: the red alga Colaconema codicola from Slovenia, the nudibranch Melibe viridis from Bosnia and Herzegovina, the lionfish Pterois miles from Montenegro, and the goldstripe sardinella Sardinella gibbosa from Syria, which also represents a second record for the Mediterranean Sea. Furthermore, the occurrence of the scleractinian coral Oculina patagonica was noted in Gulf of Lion (France). Four polychaete species, namely Leodice antennata, Timarete punctata and Branchiomma bairdi, are reported from the vermetid reef habitat and two of them (L. antennata and B. bairdi) are also recorded for the first time in Lebanon. Evidence for established populations of the Asian date mussel Arcuatula senhousia in the Sea of Marmara (Turkey) and the rayed pearl oyster Pinctada radiata around the island of Sardinia (Italy) is provided.

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Schroeder, Rafael, Paulo R. Schwingel und Alberto T. Correia. „Population structure of the Brazilian sardine (Sardinella brasiliensis) in the Southwest Atlantic inferred from body morphology and otolith shape signatures“. Hydrobiologia 849, Nr. 6 (09.11.2021): 1367–81. http://dx.doi.org/10.1007/s10750-021-04730-7.

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Tsikliras, Athanassios C. „Climate-related geographic shift and sudden population increase of a small pelagic fish (Sardinella aurita) in the eastern Mediterranean Sea“. Marine Biology Research 4, Nr. 6 (Dezember 2008): 477–81. http://dx.doi.org/10.1080/17451000802291292.

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. Akel, EL Sayed. „Fisheries of experimental purse seine net using light and population dynamics of Sardinella aurita (Family Clupeidae) east of Alexandria,Egypt.“ Egyptian Journal of Aquatic Biology and Fisheries 13, Nr. 1 (01.01.2009): 55–77. http://dx.doi.org/10.21608/ejabf.2009.2023.

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Wujdi, Arief. „KARAKTERISTIKMORFOLOGI DANHUBUNGANMORFOMETRIK OTOLITH DENGAN UKURAN IKAN LEMURU (Sardinella lemuru Bleeker, 1853) DI SELAT BALI“. BAWAL Widya Riset Perikanan Tangkap 8, Nr. 3 (20.01.2017): 159. http://dx.doi.org/10.15578/bawal.8.3.2016.159-172.

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Otolith telah digunakan secara luas untuk kajian taksonomi, pertumbuhan, umur dan kekerabatan populasi ikan dari perairan yang berbeda. Penelitian ini bertujuan untuk mengetahui hubungan morfometrik otolith dan ukuran ikan lemuru serta karakteristikmorfologi otolith. Sampel dikumpulkan dari Selat Bali padaApril hingga Juli 2015. Pengujian statistik juga dilakukanmenggunakan uji-t berpasangan dua arah pada selang kepercayaan 99% untuk menentukan signifikansi hasil pengukuran morfometrik antara otolith kanan dan kiri. Hubungan parameter morfometrik dan ukuran ikan dianalisis menggunakan persamaan regresi linear dan eksponensial. Karakteristik morfologi otolith disajikan secara deskriptif dan dipertegas dengan nilai indeks-indeks bentuk menggunakan 6 deskriptor. Hasil penelitian menunjukkan bahwa tidak ada perbedaan yang signifikan pada pengukuran morfometrik otolith kiri dan kanan. Ukuran otolithmemiliki korelasi isometrik dengan pertumbuhan ikan dimana panjang otolith (OL) menjadi indikator terbaik untuk mengestimasi ukuran individu ikan. Otolith ikan lemuru memiliki ciri-ciri morfologi yang konsisten seperti halnya ikan dari genus Sardinella, khususnya sulcus acusticus, rostrum dan antirostrum. Nilai indeks bentuk yangmenegaskan ciri-ciri morfologi otolith juga dijelaskan.Otoliths widely used to determine taxonomy, growth, age and population structure of fishes. This study aims to determine the relationship between otolith morphometric to fish sizes and morphological characteristic of otolith. Data were collected from April to July 2015 in Muncar, Bali Strait. The statistical tests using two tails ttest paired sample also implemented to examine differentiation between left and right otolith measurement. The linear regression and exponential equation used to examine otolith morphometric parameter to fish size. Otolith morphological characteristics presented descriptively and emphasized using 6 descriptors of shape indices. The results showed no significant differences between left and right otolith. The otolith-fish size relationship was isometric. An OL (length of otolith) found as the best indicators to estimate the original size of fish. The otolith has specific morphological characteristics, in particular sulcus acusticus, rostrum and antirostrum were similar with other species from Sardinella genus. Shape indices also provided to confirm the morphological otolith.

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Espirito Santo, Milton Luiz Pinho, Cristiane Lisboa, Fernanda Gonçalves Alves, Daniela Martins, Luiz Henrique Beirão, Ernani Sebastião Sant'Anna und Bernadette Dora Gombossy de Melo Franco. „Effect of different levels of sodium chloride and glucose on fermentation of sardines (Sardinella brasiliensis) by Lactobacillus sakei 2a“. Brazilian Archives of Biology and Technology 48, Nr. 1 (Januar 2005): 42–52. http://dx.doi.org/10.1590/s1516-89132005000100008.

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Lactobacillus sakei 2a is a bacteriocin producer strain. In this study, it's effects as a starter culture in the curing process of sardine (Sardinella brasiliensis) fillets were studied at different concentrations of NaCl (2, 4, 6%) and glucose (2, 4%). After 21 days of fermentation, the spoilage microorganisms population reached 9.7 Log10 CFU g-1 corresponding to 6% NaCl and 4% glucose. With no addition of glucose and starter culture, sardine fillets began spoilage 72 hours after fermentation, even when 6% NaCl was used. Little differences were observed in lactic acid production when 2 and 4% glucose were added, since total acidity was 1.32 and 1.34% respectively, the experiments with 6% NaCl presented the best results. Initial pH of sardine fillets was 6.0 and after 21 days pH values were 3.8, 3.9 and 4.0 for the experiments with 2, 4 and 6% NaCl respectively. This could have been due to the inhibitory properties of NaCl over the spoilage microorganisms. After 21 days of the fermentation, the levels of lactic acid bacteria (LAB) were 14.5 Log10 CFU.g-1.

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Ogbon, Abdou Matinou, Richmond Afoakwah, Kwadwo Kesse Mireku, Nounagnon Darius Tossavi und Ken MacKenzie. „Parasites of Sardinella maderensis (Lowe, 1838) (Actinopterygii: Clupeidae) and Their Potential as Biological Tags for Stock Identification along the Coast of West Africa“. Biology 12, Nr. 3 (28.02.2023): 389. http://dx.doi.org/10.3390/biology12030389.

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This study is the first to provide information on the parasite fauna of Sardinella maderensis along the coasts of Benin and Ghana, and the first to investigate the potential use of parasites as biological tags in fish population studies in the area. It may thus serve as a starting point for upcoming studies. From February to June 2021, a total of 200 S. maderensis were sampled from the fishing port of Cotonou (Benin) and the Elmina landing site (Ghana). The prevalence and abundance of each parasite were recorded. The following are the outcomes of this study: Parasite species, such as Parahemiurus merus, Mazocraeoides sp. and Hysterothylacium fortalezae, were recorded along the coasts of Benin and Ghana, while Anisakis sp(p). and Tentacularia coryphaenae were only recorded along the coast of Benin. Parahemiurus merus was the most prevalent and abundant among all the parasites recorded. Anisakis sp(p). and T. coryphaenae were selected as having potential in the stock identification of S. maderensis. Both parasites were only recorded along the coast of Benin at a low prevalence. As a result, examinations of more S. maderensis from each location for these parasites may justify their use in stock identification studies.

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Hamilton, Erin F., Collin L. Juurakko, Katja Engel, Josh D. Neufeld, John M. Casselman, Charles W. Greer und Virginia K. Walker. „Environmental Impacts on Skin Microbiomes of Sympatric High Arctic Salmonids“. Fishes 8, Nr. 4 (18.04.2023): 214. http://dx.doi.org/10.3390/fishes8040214.

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In the region of King William Island, Nunavut, in the Canadian high Arctic, populations of salmonids including Arctic char (Salvelinus alpinus), cisco (Coregonus autumnalis and C. sardinella) as well as lake whitefish (C. clupeaformis) are diadromous, overwintering in freshwater and transitioning to saline waters following ice melt. Since these fish were sampled at the same time and from the same traditional fishing sites, comparison of their skin structures, as revealed by 16S rRNA gene sequencing, has allowed an assessment of influences on wild fish bacterial communities. Arctic char skin microbiota underwent turnover in different seasonal habitats, but these striking differences in dispersion and diversity metrics, as well as prominent taxa involving primarily Proteobacteria and Firmicutes, were less apparent in the sympatric salmonids. Not only do these results refute the hypothesis that skin communities, for the most part, reflect water microbiota, but they also indicate that differential recruitment of bacteria is influenced by the host genome and physiology. In comparison to the well-adapted Arctic char, lake whitefish at the northern edge of their range may be particularly vulnerable, and we suggest the use of skin microbiomes as a supplemental tool to monitor a sustainable Indigenous salmonid harvest during this period of change in the high Arctic.

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Das, Simon Kumar, Wee Xiang Tou, Noorashikin Md Noor, Moumita De und Abdullah Samat. „Length-Weight Relationship, Condition Factor, and Age Estimation of Commercially Important Trawl Species from Mersing Coastal Waters, Johor, Malaysia“. Sains Malaysiana 50, Nr. 1 (31.01.2021): 1–7. http://dx.doi.org/10.17576/jsm-2021-5001-01.

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Trawl fishing contributes to majority of the total fishes’ landings, supporting the choice of using age, growth determination, and condition factors (K) as part of the monitoring method for the fishes in Malaysia waters. This research specifically examines the use of age, length-weight relationship (LWR), and K to monitor the status of the commercially important fishes in Malaysia waters. LWR, K, and age of 10 commercially important trawl species (Gerres erythrourus, Drepane punctata, Otolithes ruber, Anodontostoma chacunda, Drepane longimana, Dendrophysa russelii, Sillago parvisquamis, Cynoglossus bilineatus, Sardinella brachysoma,and Alepes kleinii) from Mersing coastal waters, Johor, Malaysia, were studied. LWR (W=aLb) indicated positive allometric growth (b > 3) for G. erythrourus and D. punctata but negative allometric growth (b < 3) for the other species. Results indicated that the species collected were in good conditions (average K, Kn > 1) in Mersing coastal waters, Johor, Malaysia. The daily growth rings of scale counts confirmed that the ages of the 10 species were typically less than 1 year (age range: 50-170 days; mean age: 95 days). The data obtained from this study will be useful for understanding the population growth pattern, age, and well-being of commercially important trawl species, which will facilitate better management techniques of these important fishery resources.

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Padzil, K. N. M., N. M. Ayob, A. M. Alzabt und Y. Rukayadi. „Antibacterial activity of taro (Colocasia esculenta L.) leaves extracts against Staphylococcus aureus and Vibrio parahaemolyticus and its effect on microbial population in sardine (Sardinella longiceps Val.)“. Food Research 5, Nr. 2 (27.02.2021): 88–97. http://dx.doi.org/10.26656/fr.2017.5(2).431.

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Colocasia esculenta L. which is popularly known in Malaysia as ‘‘keladi’’ has extensive traditional uses for certain of the plant part such as the leaves, corm and stem. An earlier study has reported on the analysis of its pharmacological properties such as antiinflammatory and antibacterial activity. This study aimed to determine the antibacterial activity of C. esculenta L. leaves extracts against Staphylococcus aureus ATCC 29737 and Vibrio parahaemolyticus ATCC 17802 and its effect on the microbial population of sardine. The extract was tested for antibacterial activity against S. aureus and V. parahaemolyticus in term of disc diffusion assay (DDA), minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and killing time curve by using Clinical and Laboratory Standard Institute (CLSI) methods. DDA assay of the extract resulted in 8.40±0.10 mm and 8.20±0.16 mm of inhibition zone of the extract on S. aureus and V. parahaemolyticus, respectively. The extract can inhibit the growth of S. aureus and V. parahaemolyticus with MICs values of 1.25±0.00 and 0.31±0.00 mg/mL and can kill the bacteria with MBCs values of 2.50±0.00 and 0.63±0.00 mg/mL, respectively. The killing time analyses showed that the S. aureus and V. parahaemolyticus can be killed completely for 4 hrs at 2 × MIC (25.0 mg/mL) and 2 × MIC (6.25 mg/mL), respectively. Application of the extract on sardine samples shows significant reduction in total plate count (TPC), S. aureus and V. parahaemolyticus count after treated with 5.00% of the extract and stored at 4˚C for 30 mins. Based on the findings, it indicates that C. esculenta L. can be listed as one of the alternatives natural sanitiser or preservative agent to reduce the bacterial loading of raw sardine prior to cooking

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Puteri, Fadya Rachmi, Norma Afiati und Niniek Widyorini. „PENGARUH KOMPOSISI JENIS PAKAN YANG BERBEDA TERHADAP PERTUMBUHAN TUKIK PENYU SISIK (Eretmochelys imbricata) DI PENETASAN SEMI-ALAMI PENYU TAMAN NASIONAL KARIMUNJAWA (The Effect of Different Feeding Composition on Growth of Baby Hawksbills Turtle (Eretmochelys imbricata) in Semi-Natural Hatching Den in Karimunjawa National Park)“. SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology 14, Nr. 2 (14.02.2019): 110. http://dx.doi.org/10.14710/ijfst.14.2.110-114.

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Populasi alamiah penyu di Indonesia terus menurun 20 - 30% per tahun terutama lebih disebabkan oleh faktor manusia dibandingkan dengan faktor alam dan predator. Beberapa di antara teknik penyelamatan untuk pelestarian penyu antara lain melalui penetasan di sarang semi-alami, perlindungan translokasi habitat (konservasi in-situ), penegakan hukum, penyuluhan dan pemberdayaan masyarakat sekitar. Di sarang semi-alami jenis pakan yang tepat pada saat pemeliharaan awal tukik sebelum dilepas ke laut akan mempengaruhi kelulus-hidupan mereka. Padahal, sampai saat ini jenis pakan yang tepat untuk tukik belum banyak diketahui. Penelitian ini menggunakan tiga 3 perlakuan pakan (Sardinella lemuru 100%; Sargassum filipendula 100%; campuran S. lemuru dan S. filipendula 50:50%), analisis data enggunakan Rancangan Acak Lengkap (RAL) dengan 3 pengulangan. Secara statistik, diketahui bahwa tiap perlakuan pakan menghasilkan perbedaan pada variabel panjang, lebar karapas dan bobot tukik. Berdasarkan analisis alometri tukik E.imbricata selama penelitian, dihasilkan konstanta b < b antar perlakuan yang menunjukkan bahwa pertumbuhan bersifat alometri negatif pada variabel panjang karapas dan bobot tubuh serta panjang dan lebar karapas; kecuali pada hubungan panjang dan lebar karapas tukik dengan pakan S. lemuru. The population of sea turtles in Indonesia continued to decrease by 20-30% each year. The decline in natural turtle populations is caused mainly by human factors rather than natural factors and predator. Among others, rescue and preservation of turtles can be accomplished through rearing in a semi-natural den, protection of the habitat translocation (in-situ conservation), law enforcement, education and empowerment of local communities. The proper type of feed for the hatchlings to provide information on required nutrient in optimizing the growth has not been known until now. The methods used in this study was an experimental method apllying Complete Randomised Design with three feeding treatments (100% S. lemuru; 100% Sargassum filipendula; 50:50% mixed of S. lemuru and S. filipendula). The results showed that carapace length, carapace width and body weight differed statistically (P<0.05) in every feed treatment. Hatchlings showed negative allometric (b < ) in carapace length to weight as also carapace length to its width. Isometry in carapace length and width is only shown by hatchlings fed with S. lemuru

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Yablokov, N. O., D. A. Krivolutskiy und A. V. Klunduk. „Structure of the spawning herd and stocks of the Siberian vendace of the Yenisei River“. Trudy VNIRO 192 (15.08.2023): 127–38. http://dx.doi.org/10.36038/2307-3497-2023-192-127-138.

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The aim of the research is to evaluate the structural and biological parameters of the spawning stock of the turukhanskaya form of the Siberian vendace Coregonus sardinella (Valenciennes, 1848) from the Yenisei River and the state of the commercial stock of this fish species in the period from 2014 to 2021. Research methods: in the research used the ichthyological material collected in the period from 2014 to 2021 in the lower reaches of the Yenisei River (near the Dudinka town and the village of Levinsky Sands). Processing of ichthyological materials was carried out according to generally accepted methods. The number of spawning herds of Siberian vendace was calculated using a virtual population analysis in Galland’s modification. Instant natural mortality rates by age groups were calculated using the method of L. A. Zykov. Results: According to the control catches, the age of the spawning stock of the turukhanskaya form of Siberian vendace in the Yenisei River was 2+–9+ years. Fish aged 4+ years, which in different years constituted from 47 to 68 % of the spawning stock, dominated in the population. The average long-term age of the spawning population in the study period was 4.2 years. The ratio of females and males in the spawning herd was close to 1:1 on average. Individual absolute fecundity of fishes varied in the range from 1.9 to 12.5 thousand eggs, increasing with increasing age and size of females. The average population fecundity is 2.6–5.3 thousand eggs. The number and biomass of the spawning herd in different years varied from 11.0 to 30.5 thousand individuals and from 630 to 1738 tons, respectively. Practical significance: the obtained results about the dynamics and structure of the spawning stock of the semi-anadromous form of the Siberian vendace from Yenisei River for the period from 2014 to 2021 will be used for prognostic purposes in the preparation of materials substantiating the volumes of the recommended catch in the basin of the Yenisei River. Conclusion: Based on the results of the analysis of the age, size-weight and sex structure, it was shown that the state of stocks of the semi-anadromous turukhanskaya form of the Siberian vendace in the Yenisei River is currently in a satisfactory condition.

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Odulate, D. O., I. T. Omoniyi und Y. Akegbejo-Samsons. „Assessments of fish catch composition of marine artisanal fishery in the Gulf of Guinea, Southwest Nigeria“. Nigerian Journal of Animal Production 40, Nr. 1 (28.12.2020): 197–206. http://dx.doi.org/10.51791/njap.v40i1.703.

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Fish is a major source of protein in human diets. Fish demand has been on the increase due to increase in human population which has resulted to wide gap between fish demand and supply. This study was carried out to elucidate the major fish species that are economically important in the study area. Assessment of fish catch composition was done in the marine artisanal fish sector of Southwest Nigeria Gulf of Guinea. The study area was divided into three strata with one sampling station selected from each stratum. Four canoes were sampled per site per month. Fish catches were sorted into taxonomic categories, counted, measured and weighed. Sixty-nine fish species from forty-two families were identified constituting fifty-nine finfish and ten shellfish species. Clupeid family had the highest contribution both by weight (40.5%) and abundance (53.7%). Sardinella maderensis was the most abundant species by number (30.6%) and weight (27.9%). Parapenaeopsis atlanticus (51%) was the most abundant shellfish while P. validus (87%) was the highest by weight. Fish production was highest in Station 1 both by weight (37%) and abundance (41%). The status of finfish species showed that five species were very common; four were common, fourteen uncommon and thirty-six rare. Among the shellfish species, three species were very common, none was common, three were uncommon and three species rare. Effective management of these fish resources is necessary to ensure fish food security.

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