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Auteur : Grafiati
Publié le 10 mars 2023

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1

Litulo, Carlos. « Distribution, abundance and reproduction of the Indo-Pacific acorn barnacle Balanus amphitrite (Crustacea : Cirripedia) ». Journal of the Marine Biological Association of the United Kingdom 87, no 3 (16 mai 2007) : 723–27. http://dx.doi.org/10.1017/s0025315407052757.

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The patterns of distribution, abundance and reproduction of the Indo-Pacific barnacle Balanus amphitrite were surveyed at Costa do Sol mangrove, Maputo Bay, southern Mozambique using stratified sampling design. Balanus amphitrite exhibited a spatial variation in which high numbers of individuals colonized the upper stratum in comparison to the lower stratum. Seasonal abundance of B. amphitrite was greater in the upper stratum and declined in June and September. In contrast, very high densities of individuals were recorded in winter in the lower stratum. Gonad cycle showed continuous trend and release of embryos mainly took place in winter (May–July). There was a strong quadratic effect of temperature on breeding activity of B. amphitrite, with females continuing to brood at lower temperatures. Egg numbers increased linearly with female size. The success of the reproductive activity may be synchronized within the species, enhancing the establishment and colonization of B. amphitrite in the study area.
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2

Clare, A. S., et J. A. Nott. « Scanning electron microscopy of the fourth antennular segment of Balanus amphitrite amphitrite ». Journal of the Marine Biological Association of the United Kingdom 74, no 4 (novembre 1994) : 967–70. http://dx.doi.org/10.1017/s0025315400090202.

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Despite extensive studies on settlement of the cypris larva of Balanus amphitrite amphitrite Darwin (Crustacea: Cirripedia), the fine structure of the putative settlement receptors of this species has not been described. This study presents observations made with the scanning electron microscope of the fourth antennular segment and its associated setae.
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3

Lepeco, Anderson, et Rodrigo Barbosa Gonçalves. « The Colour and the Shape : Morphological Variation on a Facultatively Eusocial Bee Augochlora (Augochlora) amphitrite (Schrottky) ». Sociobiology 65, no 4 (11 octobre 2018) : 662. http://dx.doi.org/10.13102/sociobiology.v65i4.3388.

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Augochlorine bees exhibit a large array of foraging and social behaviors, nest substrates and architecture. The huge diversity of behaviors is frequently linked with morphological traits. All levels of variation should be analyzed in order to provide a broader view of evoluton. Augochlora (Augochlora) amphitrite Schrottky occurs from northern of Argentina to southeastern of Brazil. The species nests in decaying wood and is facultatively eusocial. Color variation and head polymorphism were already mentioned in the literature and the main goal of the present paper is to evaluate the morphological variation of the species. For this purpose, we examined 720 specimens and carried out qualitative and quantitative analyses with traditional morphometrics. Other 25 Augochlora species were studied and we propose a revised diagnosis for A. amphitrite. A remarkable color variation is described, there are three morphs: green, dark blue, and black. There are no geographical patterns linked with the color variation. We propose that Odontochlora lethe Schrottky and Odontochlora styx Schrottky are junior synonyms of Odontochlora amphitrite Schrottky. Those names refer to black male and female occurring within A. amphitrite distribution. There is a continuous variation on size and shape of head. Again, we do not fi nd any relation of morphology with distribution. Besides gena swelling, the adductor ridge of mandible is strongly developed on macrocephalic females. Due variations showed, A. amphitrite is a bee candidate to be a model for studies to link morphology, function and behavior.
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4

Ramsay, David B., Gary H. Dickinson, Beatriz Orihuela, Daniel Rittschof et Kathryn J. Wahl. « Base plate mechanics of the barnacleBalanus amphitrite(=Amphibalanus amphitrite) ». Biofouling 24, no 2 (14 février 2008) : 109–18. http://dx.doi.org/10.1080/08927010701882112.

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Satheesh, S., et S. Godwin Wesley. « Breeding biology of the barnacle Amphibalanus amphitrite (Crustacea : Cirripedia) : influence of environmental factors in a tropical coast ». Journal of the Marine Biological Association of the United Kingdom 89, no 6 (3 juin 2009) : 1203–8. http://dx.doi.org/10.1017/s0025315409000228.

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Barnacles are the common fouling organisms encountered in coastal waters around the world. In the present study, breeding biology of the intertidal barnacle Amphibalanus amphitrite (=Balanus amphitrite) was studied for a period of two years (July 2003 to June 2005) in the Kudankulam coastal waters. Results showed that A. amphitrite breeds throughout the year in the study area. A high percentage of individuals with free nauplii in the mantle cavity was observed during March 2004 (47.6%) and May 2004 (41.7%). Barnacles with fertilized eggs in the ovary were high during November 2004 (56%), March 2005 (46.7%) and April 2005 (42.8%). Overall, a peak breeding activity was observed during the March–May period. The breeding activity showed a significant positive correlation with surface water temperature and phytoplankton abundance.
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6

Clare, A. S., S. C. Ward, D. Rittschof et K. M. Wilbur. « Growth Increments of the Barnacle Balanus amphitrite amphitrite Darwin (Cirripedia) ». Journal of Crustacean Biology 14, no 1 (février 1994) : 27. http://dx.doi.org/10.2307/1549052.

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7

Knight, John, Andrew F. Rowley, Mizue Yamazaki et Anthony S. Clare. « Eicosanoids are modulators of larval settlement in the barnacle, Balanus amphitrite ». Journal of the Marine Biological Association of the United Kingdom 80, no 1 (février 1999) : 113–17. http://dx.doi.org/10.1017/s0025315499001629.

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Eicosanoids are oxygenated derivatives of C20 polyunsaturated fatty acids known to play key roles in many physiological events in both invertebrates and vertebrates. The eicosanoid generating capacity of cypris larvae of the barnacle, Balanus amphitrite, was examined using enzyme immunoassay and high-performance liquid chromatography. These larvae generated the lipoxygenase products, 12-hydroxyeicosapentaenoic acid (HEPE), 8-HEPE and 8,15-diHEPE, together with the cyclooxygenase products, prostaglandin (PG) E, PGF and thromboxane (TX) B. Indomethacin, a selective cyclooxygenase inhibitor, caused a dose-dependent inhibition of PGE generation by B. amphitrite larvae, while esculetin and nordihydroguaiaretic acid (lipoxygenase inhibitors) also strongly inhibited the generation of 8-HEPE, 12-HEPE and 8,15-diHEPE. PGE2, PGE3 and 16,16-dimethyl PGE2 caused a dose-dependent inhibition of settlement of B. amphitrite larvae while indomethacin (25–100 μM) stimulated this process. Lipoxygenase products (8-HEPE, 12-HEPE and 8,15-diHEPE) as well as esculetin and nordihydroguaiaretic acid (10–100 μM) had no effect on the attachment of larvae.
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8

Clare, Anthony S., et Mizue Yamazaki. « Inactivity of glycyl-glycyl-arginine and two putative (QSAR) peptide analogues of barnacle waterborne settlement pheromone ». Journal of the Marine Biological Association of the United Kingdom 80, no 5 (octobre 2000) : 945–46. http://dx.doi.org/10.1017/s0025315400002952.

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The effect of two putative tripeptide analogues (isoleucine-isoleucine-arginine [IIR] and valine-leucine-arginine [VLR]) and a reported analogue, glycyl-glycyl-arginine (GGR), of the waterborne cue to settlement of Balanus amphitrite amphitrite Darwin cypris larvae has been investigated. Settlement in the presence of these tripeptides was not significantly different from that in filtered seawater. Because crude waterborne cue and settlement-inducing protein complex both significantly evoked settlement, the cyprids used in this study were competent to respond. The overall results, therefore, demonstrate that IIR, VLR and GGR are not analogues of barnacle waterborne settlement pheromone.
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9

Prabhakara Rao, Y., V. Uma Devi et D. G. V. Prasada Rao. « Copper toxicity in tropical barnacles, Balanus Amphitrite amphitrite and Balanus tintinnabulum tintinnabulum ». Water, Air, & ; Soil Pollution 27, no 1-2 (janvier 1986) : 109–15. http://dx.doi.org/10.1007/bf00464773.

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10

Clare, Anthony S., Rebecca K. Freet et Marion McClary. « On the antennular secretion of the cyprid of Balanus amphitrite amphitrite, and its role as a settlement pheromone ». Journal of the Marine Biological Association of the United Kingdom 74, no 1 (février 1994) : 243–50. http://dx.doi.org/10.1017/s0025315400035803.

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In exploring a substratum, Balanus amphitrite amphitrite Darwin (Crustacea: Cirripedia) cyprids deposit ‘footprints’ of antennular secretion. The results of in vitro settlement assays suggest that in addition to serving as a temporary adhesive, the secretion acts as a pheromone, in that its presence induces the settlement of conspecific cyprids. This result is in accord with a previous study on Balanus balanoides (L.)(=Semibalanus balanoides). In settlement assays, the pheromone is likely to contribute to an observed positive linear relationship between settlement and cyprid density. The density effect should thus be an important consideration in the design of barnacle settlement assays. In the field, cyprid searching behaviour may render a surface more attractive to settlement by cypris larvae.
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11

Clare, A. S., L. M. Eibest et K. M. Wilbur. « Effect of Tunicamycin on Growth and Mineralization of Balanus amphitrite amphitrite Darwin (Cirripedia) ». Journal of Crustacean Biology 16, no 2 (mai 1996) : 285. http://dx.doi.org/10.2307/1548884.

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12

ROBSON, M. A., J. C. THOMASON et K. WOLFF. « Eight polymorphic microsatellite loci markers for the barnacleBalanus amphitrite(syn.Amphibalanus amphitrite) Darwin 1854 ». Molecular Ecology Resources 9, no 1 (janvier 2009) : 368–69. http://dx.doi.org/10.1111/j.1755-0998.2008.02412.x.

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13

Holm, Eric R. « Attachment behavior in the barnacle Balanus amphitrite amphitrite (Darwin) : genetic and environmental effects ». Journal of Experimental Marine Biology and Ecology 135, no 2 (mars 1990) : 85–98. http://dx.doi.org/10.1016/0022-0981(90)90008-z.

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14

Wieczorek, SK, AS Clare et CD Todd. « Inhibitory and facilitatory effects of microbial films on settlement of Balanus amphitrite amphitrite larvae ». Marine Ecology Progress Series 119 (1995) : 221–28. http://dx.doi.org/10.3354/meps119221.

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15

Gallus, Lorenzo, Sara Ferrando, Chiara Gambardella, Alberto Diaspro, Paolo Bianchini, Marco Faimali, Paola Ramoino et Grazia Tagliafierro. « NMDA R1 receptor distribution in the cyprid of Balanus amphitrite (=Amphibalanus amphitrite) (Cirripedia, Crustacea) ». Neuroscience Letters 485, no 3 (novembre 2010) : 183–88. http://dx.doi.org/10.1016/j.neulet.2010.09.008.

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16

Gallus, Lorenzo, Sara Ferrando, Chiara Gambardella, Alberto Diaspro, Paolo Bianchini, Veronica Piazza, Giambattista Bonanno, Marco Milanese, Paola Ramoino et Grazia Tagliafierro. « The GABAergic-like system in the cyprid of Balanus amphitrite (=Amphibalanus amphitrite) (Cirripedia, Crustacea) ». Biofouling 26, no 2 (18 novembre 2009) : 155–65. http://dx.doi.org/10.1080/08927010903391193.

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17

Gallus, Lorenzo, Sara Ferrando, Chiara Gambardella, Andrea Amaroli, Marco Faimali, Veronica Piazza et Maria Angela Masini. « G-protein alpha subunits distribution in the cyprid ofBalanus amphitrite(=Amphibalanus amphitrite) (Cirripedia, Crustacea) ». Microscopy Research and Technique 75, no 12 (26 juillet 2012) : 1613–22. http://dx.doi.org/10.1002/jemt.22106.

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18

Ubagan, Michael Dadole, Yun-Sik Lee, Taekjun Lee, Jinsol Hong, Il Hoi Kim et Sook Shin. « Settlement and Recruitment Potential of Four Invasive and One Indigenous Barnacles in South Korea and Their Future ». Sustainability 13, no 2 (11 janvier 2021) : 634. http://dx.doi.org/10.3390/su13020634.

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Invasion by nonindigenous species is a major threat to marine ecosystems. In this study, the distribution and occupied area (as a percentage) of four invasive barnacles (Amphibalanus amphitrite, Amphibalanus eburneus, Amphibalanus improvisus, Perforatus perforatus), and one indigenous (Balanus trigonus) barnacle in 13 ports in three Korean seas (East sea, Korea Strait, and Yellow Sea) were investigated. The average ratio for all five species was 11.17% in summer and 7.59% in winter, indicating a higher occupancy in summer. B. trigonus, which is an indigenous species, was found on all ports, except for one (IC). Of the invasive species, A. amphitrite was found mainly in the Yellow Sea, A. improvisus in the Korea Strait, and A. eburneus along with P. perforatus were found in the East Sea. From nonmetric multidimensional scaling (NMDS) analysis, six parameters related to water temperature and salinity were found to be significantly correlated with the distribution and occupancy status of these five barnacles. Using the six parameters as independent variables, random forest (RF) models were developed. Based on these models, the predicted future dominant invasive species were A. improvisus and A. amphitrite in the Yellow Sea and P. perforatus in the East Sea and Korea Strait. This study suggests that long-term monitoring of invasive species is crucial, and that determining the relationship between the results of monitoring and environmental variables can be helpful in predicting the damage caused by invasive species resulting from environmental changes.
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19

Ubagan, Michael Dadole, Yun-Sik Lee, Taekjun Lee, Jinsol Hong, Il Hoi Kim et Sook Shin. « Settlement and Recruitment Potential of Four Invasive and One Indigenous Barnacle Species in South Korea and Their Future ». Sustainability 13, no 2 (11 janvier 2021) : 634. http://dx.doi.org/10.3390/su13020634.

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Invasion by nonindigenous species is a major threat to marine ecosystems. In this study, the distribution and occupied area (as a percentage) of four invasive barnacle species (Amphibalanus amphitrite, Amphibalanus eburneus, Amphibalanus improvisus, Perforatus perforatus), and one indigenous (Balanus trigonus) barnacle species in 13 ports in three Korean seas (Yellow Sea, Korea Strait, and East Sea) were investigated. The average ratio for all five species was 11.17% in summer and 7.59% in winter, indicating a higher occupancy in summer. B. trigonus, which is an indigenous species, was found on all ports, except for one (IC). Of the invasive species, A. amphitrite was found mainly in the Yellow Sea, A. improvisus in the Korea Strait, and A. eburneus along with P. perforatus were found in the East Sea. From nonmetric multidimensional scaling (NMDS) analysis, six parameters related to water temperature and salinity were found to be significantly correlated with the distribution and occupancy status of these five barnacle species. Using the six parameters as independent variables, random forest (RF) models were developed. Based on these models, the predicted future dominant invasive species were A. improvisus and A. amphitrite in the Yellow Sea and P. perforatus in the East Sea and Korea Strait. This study suggests that long-term monitoring of invasive species is crucial, and that determining the relationship between the results of monitoring and environmental variables can be helpful in predicting the damage caused by invasive species resulting from environmental changes.
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20

Desai, Dattesh V., et A. C. Anil. « Recruitment of the barnacle Balanus amphitrite in a tropical estuary : implications of environmental perturbation, reproduction and larval ecology ». Journal of the Marine Biological Association of the United Kingdom 85, no 4 (27 juin 2005) : 909–20. http://dx.doi.org/10.1017/s0025315405011884.

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Phytoplankton blooms are known to influence barnacle recruitment and in boreal regions spring blooms work as an important trigger. Close to the west coast of the sub-continent of India, blooms tend to be triggered by breaks in the monsoon and the recurrence of the monsoon after a short break can stress the new recruits. The recruitment of Balanus amphitrite, an acorn barnacle, at Dona Paula Bay at the mouth of Zuari estuary, Goa, India was studied. Observations included variations in recruitment, larval abundance, development and reproduction. Adult conditioning and inter-brood variations were important factors in the larval ecology of this organism. The results indicate that the impulsive release of larvae during breaks between monsoons could be a short-sighted luxury for Balanus amphitrite in these waters. Temporal variations or recruitment failure in such environments can be attributed to inappropriate cue synchronization.
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21

Qiu, JW, et PY Qian. « Tolerance of the barnacle Balanus amphitrite amphitrite to salinity and temperature stress:effects of previous experience ». Marine Ecology Progress Series 188 (1999) : 123–32. http://dx.doi.org/10.3354/meps188123.

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22

DALMAZZO, MILAGROS, et ARTURO ROIG-ALSINA. « Revision of the species of the New World genus Augochlora (Hymenoptera, Halictidae) occurring in the southern temperate areas of its range ». Zootaxa 2750, no 1 (27 janvier 2011) : 15. http://dx.doi.org/10.11646/zootaxa.2750.1.2.

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Augochlora is a genus of mainly tropical bees, with few representatives in both North and South American temperate areas. In this contribution we present a taxonomic review of the species with southernmost distribution. Only five species occur in central Argentina and Uruguay, between 30º and 40º south latitude: A. iphigenia Holmberg, A. amphitrite (Schrottky), A. nausicaa (Schrottky), A. phoemonoe (Schrottky) and A. daphnis Smith. The first four species are common elements in the bee assemblages of the area. The fifth species, from Montevideo, Uruguay, is known from the type specimen only. Re-descriptions of all species, as well as illustrations, distributional data, and taxonomic keys are presented. A lectotype is designated for Augochlora iphigenia Holmberg, 1886. Oxystoglossa semiramis Schrottky, 1911, and Halictus brochidens Vachal, 1911, are new synonyms of A. iphigenia Holmberg. Odontochlora thebe Schrottky, 1909, is a new synonym of Odontochlora amphitrite Schrottky, 1909.
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23

Darling, Marilyn S., et Karl M. Wilbur. « A Method for Measuring Growth in Living Barnacles (Crustacea : Cirripedia) ». Journal of the Marine Biological Association of the United Kingdom 73, no 3 (août 1993) : 723–26. http://dx.doi.org/10.1017/s0025315400033257.

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A buoyant-weight method is described for the non-destructive estimation of fresh weight, total dry weight, shell weight and dry weight of organic matter in living barnacles Balanus amphitrite amphitrite Darwin. The method involves developing regression equations relating weight in air of these parameters to the buoyant weight of living barnacles in sea water. Buoyant weights of barnacles can then be used with the regression equations to obtain the weight in air of these consitituents, making possible the measurement of rates of shell growth and growth in dry weight without disturbance to the living animal. The method has been developed for the analysis of groups of juvenile barnacles cultured on coverslips, ranging in total dry weight from 1 to 60 mg, and for single mature individuals from 75 to 800 mg total dry weight. The buoyant-weight method has been used to measure shell growth of 2–3 mg d-1 in barnacles of 48 mg mean initial total dry weight cultured at 28°C.
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24

Carlton, James T., et William A. Newman. « Reply to Clare and Høeg 2008. Balanus amphitrite or Amphibalanus amphitrite ? A note on barnacle nomenclature ». Biofouling 25, no 1 (janvier 2009) : 77–80. http://dx.doi.org/10.1080/08927010802535247.

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25

Si, Meng, Victoria E. Irish, Ryan H. Mason, Jesús Vergara-Temprado, Sarah J. Hanna, Luis A. Ladino, Jacqueline D. Yakobi-Hancock et al. « Ice-nucleating ability of aerosol particles and possible sources at three coastal marine sites ». Atmospheric Chemistry and Physics 18, no 21 (1 novembre 2018) : 15669–85. http://dx.doi.org/10.5194/acp-18-15669-2018.

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Abstract. Despite the importance of ice-nucleating particles (INPs) for climate and precipitation, our understanding of these particles is far from complete. Here, we investigated INPs at three coastal marine sites in Canada, two at mid-latitude (Amphitrite Point and Labrador Sea) and one in the Arctic (Lancaster Sound). For Amphitrite Point, 23 sets of samples were analyzed, and for Labrador Sea and Lancaster Sound, one set of samples was analyzed for each location. At all three sites, the ice-nucleating ability on a per number basis (expressed as the fraction of aerosol particles acting as an INP) was strongly dependent on the particle size. For example, at diameters of around 0.2 µm, approximately 1 in 106 particles acted as an INP at −25 ∘C, while at diameters of around 8 µm, approximately 1 in 10 particles acted as an INP at −25 ∘C. The ice-nucleating ability on a per surface-area basis (expressed as the surface active site density, ns) was also dependent on the particle size, with larger particles being more efficient at nucleating ice. The ns values of supermicron particles at Amphitrite Point and Labrador Sea were larger than previously measured ns values of sea spray aerosols, suggesting that sea spray aerosols were not a major contributor to the supermicron INP population at these two sites. Consistent with this observation, a global model of INP concentrations under-predicted the INP concentrations when assuming only marine organics as INPs. On the other hand, assuming only K-feldspar as INPs, the same model was able to reproduce the measurements at a freezing temperature of −25 ∘C, but under-predicted INP concentrations at −15 ∘C, suggesting that the model is missing a source of INPs active at a freezing temperature of −15 ∘C.
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Qiu, JW, LA Gosselin et PY Qian. « Effects of short-term variation in food availability on larval development in the barnacle Balanus amphitrite amphitrite ». Marine Ecology Progress Series 161 (1997) : 83–91. http://dx.doi.org/10.3354/meps161083.

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Do Vale, Ana Virgília Pereira, Wagner César Rosa Dos Santos, Mara Rúbia Ferreira Barros, Rafael Anaisce Das Chagas et Marko Herrmann. « Comparação de substratos artificiais na redução de bioincrustantes em um cultivo de ostras no estuário amazônico ». Revista CEPSUL - Biodiversidade e Conservação Marinha 9 (14 avril 2020) : e2020001. http://dx.doi.org/10.37002/revistacepsul.vol9.875e2020001.

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Objetivou-se avaliar o uso de três substratos artificiais (fibrocimento, tela plástica e borracha) como medida mitigatória na diminuição de bioincrustações no cultivo de ostras. Efetuou-se o experimento de colonização no rio Urindeua, estuário amazônico, entre outu-bro/2013 e março/2014. Encontrou-se 21.638 indivíduos e nove espécies, sendo Amphibala-nus amphitrite e Mytella charruana os principais incrustantes. A curva de acumulação apresenta 85% da comunidade descrita. Os substratos de borracha e fibrocimento apresen-taram a maior abundância e riqueza. A análise de CLUSTER e nMDS indicam a sazonalida-de, tipo de substrato e profundidade os principais fatores ao agrupamento. A PCA explicou uma variação na comunidade determinada pelo tipo de substrato e a profundidade disposta. ANOSIM indicaram pouca diferença na composição entre os substratos fibrocimento e a borracha, com ambos apresentando boas diferenças quando comparados com a tela plástica. Além disso, a análise de SIMPER destaca A. amphitrite com a maior contribuição. Conclui-se que os substratos fibrocimento e a borracha apresentam-se como os substratos mais indi-cados como “anti-fouling”.
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28

Clare, A., R. Thomas et D. Rittschof. « Evidence for the involvement of cyclic AMP in the pheromonal modulation of barnacle settlement ». Journal of Experimental Biology 198, no 3 (1 mars 1995) : 655–64. http://dx.doi.org/10.1242/jeb.198.3.655.

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The involvement of cyclic AMP in the settlement of the cypris larva of Balanus amphitrite amphitrite Darwin has been examined through the use of compounds that affect intracellular cyclic AMP levels. The activation of adenylate cyclase with forskolin, and the inhibition of phosphodiesterase with 3-isobutyl-1-methylxanthine, caffeine and theophylline, significantly increased the settlement of cyprids. Although the analogue dibutyryl cyclic AMP appeared to increase settlement, the effect was not significant. No marked increase in settlement resulted from the incubation of cyprids with dibutyryl cyclic GMP, 8-(4-chlorophenylthio) (CPT) cyclic AMP or papaverine (a phosphodiesterase inhibitor). Miconazole nitrate, an adenylate cyclase inhibitor, prevented settlement, but this effect appeared to be physico-chemical rather than pharmacological. Radioimmunoassay did not clearly show whether cyclic AMP levels changed following exposure of cyprids to a pulse of crude barnacle extract. However, exposure to forskolin significantly increased the cyclic AMP titre of cyprids. We conclude that compounds that alter intracellular cyclic AMP levels alter normal patterns of cyprid settlement. Whether this is because of an alteration in signal transduction is unclear.
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Tagliafierro, Grazia, Cristiana Crosa, Marco Canepa et Tiziano Zanin. « Ultrastructural morphology of neurosecretory neurons in the barnacle Balanus amphitrite ». Proceedings, annual meeting, Electron Microscopy Society of America 48, no 3 (12 août 1990) : 434–35. http://dx.doi.org/10.1017/s0424820100159710.

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Barnacles are very specialized Crustacea, with strongly reduced head and abdomen. Their nervous system is rather simple: the brain or supra-oesophageal ganglion (SG) is a small bilobed structure and the toracic ganglia are fused into a single ventral mass, the suboesophageal ganglion (VG). Neurosecretion was shown in barnacle nervous system by histochemical methods and numerous putative hormonal substances were extracted and tested. Recently six different types of dense-core granules were visualized in the median ocellar nerve of Balanus hameri and serotonin and FMRF-amide like substances were immunocytochemically detected in the nervous system of Balanus amphitrite. The aim of the present work is to localize and characterize at ultrastructural level, neurosecretory neuron cell bodies in the VG of Balanus amphitrite.Specimens of Balanus amphitrite were collected in the port of Genova. The central nervous system were Karnovsky fixed, osmium postfixed, ethanol dehydrated and Durcupan ACM embedded. Ultrathin sections were stained with uranyl acetate and lead citrate. Ultrastructural observations were made on a Philips M 202 and Zeiss 109 T electron microscopy.
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TSUKAMOTO, Hiroichi. « Growth of Barnacle, Balanus amphitrite, in Laboratory. » Marine fouling 8, no 1/2 (1990) : 47–50. http://dx.doi.org/10.4282/sosj1979.8.47.

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Maruzzo, Diego, Nick Aldred, Anthony S. Clare et Jens T. Høeg. « Metamorphosis in the Cirripede Crustacean Balanus amphitrite ». PLoS ONE 7, no 5 (30 mai 2012) : e37408. http://dx.doi.org/10.1371/journal.pone.0037408.

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Kotsiri, Mado, Maria Protopapa, Gesthimani-Myrto Roumelioti, Athena Economou-Amilli, Eleni K. Efthimiadou et Skarlatos G. Dedos. « Probing the settlement signals of Amphibalanus amphitrite ». Biofouling 34, no 5 (24 mai 2018) : 492–506. http://dx.doi.org/10.1080/08927014.2018.1465566.

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Prousis, Kyriakos C., Stefanos Kikionis, Efstathia Ioannou, Silvia Morgana, Marco Faimali, Veronica Piazza, Theodora Calogeropoulou et Vassilios Roussis. « Synthesis and Antifouling Activity Evaluation of Analogs of Bromosphaerol, a Brominated Diterpene Isolated from the Red Alga Sphaerococcus coronopifolius ». Marine Drugs 20, no 1 (22 décembre 2021) : 7. http://dx.doi.org/10.3390/md20010007.

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Marine biofouling is an epibiotic biological process that affects almost any kind of submerged surface, causing globally significant economic problems mainly for the shipping industry and aquaculture companies, and its prevention so far has been associated with adverse environmental effects for non-target organisms. Previously, we have identified bromosphaerol (1), a brominated diterpene isolated from the red alga Sphaerococcus coronopifolius, as a promising agent with significant antifouling activity, exerting strong anti-settlement activity against larvae of Amphibalanus (Balanus) amphitrite and very low toxicity. The significant antifouling activity and low toxicity of bromosphaerol (1) motivated us to explore its chemistry, aiming to optimize its antifouling potential through the preparation of a number of analogs. Following different synthetic routes, we successfully synthesized 15 structural analogs (2–16) of bromosphaerol (1), decorated with different functional groups. The anti-settlement activity (EC50) and the degree of toxicity (LC50) of the bromosphaerol derivatives were evaluated using cyprids and nauplii of the cirriped crustacean A. amphitrite as a model organism. Derivatives 2, 4, and 6–16 showed diverse levels of antifouling activity. Among them, compounds 9 and 13 can be considered as well-performing antifoulants, exerting their activity through a non-toxic mechanism.
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Gaonkar, Chetan C., Lidita Khandeparker, Dattesh V. Desai et Arga Chandrashekar Anil. « Identification ofBalanus amphitritelarvae from field zooplankton using species-specific primers ». Journal of the Marine Biological Association of the United Kingdom 95, no 3 (6 novembre 2014) : 497–502. http://dx.doi.org/10.1017/s0025315414001581.

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Identification of marine invertebrate larvae using morphological characters is laborious and complicated by phenotypic plasticity.Balanus amphitriteis a dominant barnacle, important in the context of intertidal ecology and biofouling of manmade structures. Morphological identification of barnacle larval forms in a mixed population is difficult because of their intricacy and similarity in size, shape and developmental stages. We report the development and application of a nucleic acid-based Polymerase Chain Reaction (PCR) method for the specific identification of the barnacle,B. amphitrite, from the heterogeneous zooplankton sample. This method is reliable and accurate thereby overcoming taxonomic ambiguity. Sequence alignment of the 18S rRNA gene region of selected species of barnacles allowed the design ofB. amphitrite-specific PCR primers. Assay specificity was evaluated by screening DNA obtained from selected species of barnacles. The oligonucleotide primers used in the study flanked a 1600 bp region within the 18S rRNA gene. The primer is specific and can detect as few as 10 individuals ofB. amphitritelarvae spiked in a background of ~186 mg of zooplankton. This technique facilitates accurate identification and the primer can be used as a marker for enumeration ofB. amphitritelarvae in the plankton.
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Gao, Cheng-Hai, Bi-Juan He, Yin-Ning Chen, Ke Ke, Lin Lin, Bin Long et Ri-Ming Huang. « Two New Diterpenoids from the Beibu Gulf Gorgonian Anthogorgia caerulea ». Zeitschrift für Naturforschung B 69, no 1 (1 janvier 2014) : 116–20. http://dx.doi.org/10.5560/znb.2014-3213.

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Two new diterpenoids, anthogonoid A and antsimplexin A (1-2), as well as a known diterpenoid, klysimplexin G (3), were isolated from a Beibu Gulf gorgonian coral, Anthogorgia caerulea. The structures of these compounds have been established by detailed spectroscopic analysis and by comparison with spectral data of related known compounds. Compounds 1-3 showed significant antifouling activity against the larval settlement of Balanus amphitrite.
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Geyer, Gerd. « An enigmatic bilateral fossil from the Lower Cambrian of Morocco ». Journal of Paleontology 68, no 4 (juillet 1994) : 710–16. http://dx.doi.org/10.1017/s0022336000026147.

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Disklike, firm, bilaterally symmetrical fossils recovered from the middle Lower Cambrian Amouslek Formation of the Moroccan Anti-Atlas are described under the name Microschedia amphitrite n. gen. and sp. Their systematic affinity, particularly to brachiopods and cnidarians, and resemblance to existing taxa are discussed. Although interpretation as a brachiopod appears to be more convincing, their morphology does not permit a precise determination of systematic position.
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Li, F., F. H. Mu, X. S. Liu, X. Y. Xu et S. G. Cheung. « Predator prey interactions between predatory gastropod Reishia clavigera, barnacle Amphibalanus amphitrite amphitrite and mussel Brachidontes variabilis under ocean acidification ». Marine Pollution Bulletin 152 (mars 2020) : 110895. http://dx.doi.org/10.1016/j.marpolbul.2020.110895.

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Mol, V. P. Limna, T. V. Raveendran, P. S. Parameswaran, R. J. Kunnath et P. R. Rajamohanan. « (–)-6α-Hydroxy polyanthellin A — A novel antifouling diterpenoid from the Indian soft coral Cladiella krempfi (Hickson) ». Canadian Journal of Chemistry 89, no 1 (janvier 2011) : 57–60. http://dx.doi.org/10.1139/v10-159.

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Bioassay-guided purification of methanol extract of the soft coral Cladiella krempfi (Octocorallia: Alcynocea) yielded a novel eunicellin-type diterpenoid, (–)-6α-hydroxy polyanthellin A (1), active against the cyprids of the fouling barnacle, Balanus amphitrite (EC50 9.02 µg/mL; LC50 36 µg/mL; and therapeutic ratio = 4). The structure of compound 1 was determined from its spectral data, including IR, NMR (1D and 2D NMR), and mass spectra.
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Wijayanti, Hendry, Dhani Gathot Herbowo et Andy Darmawan. « KEBERADAAN HEWAN PENGOTOR TERITIP DI INFRASTRUKTUR TELUK KUNYIT, PANTAI SARIRINGGUNG DAN PANTAI MUTUN, LAMPUNG ». Jurnal Biologi Tropis 20, no 1 (7 février 2020) : 54. http://dx.doi.org/10.29303/jbt.v20i1.1540.

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Abstrak: Teritip merupakan salah satu hewan pengotor yang umum hidup menempel pada infrastruktur buatan manusia yang teredam di dalam perairan laut. Fenomena penempelan teritip mengakibatkan kerusakan struktur bangunan pada infrastruktur di perairan laut. Tujuan penelitian ini menginventarisasi keberadaan jenis teritip yang menempel pada infrastruktur yang ada di area pantai yang berada di Teluk kunyit, Pantai Sariringgung dan Pantai Mutun sebagai langkah awal dalam pengendalian hewan pengotor. Penelitian dilakukan dengan metode survei selama bulan April and November 2018. Pada kedua Pantai Sariringgung dan Pantai Mutun ditemukan dua spesies teritip, Amphibalanus amphitrite dan Microeuraphia withersii. Namun, jenis teritip yang ditemukan di Teluk Kunyit hanya satu spesies Cthtamalus malayensis..Kata kunci: introduksi, biofouling, zona intertidal, Teluk Lampung.Abstract: Barnacle is the most common biofouling in the manmade submerged structures. Barnacles are a serious problem which leading the detriment of coastal structures. The aim of the study was to investigate the dataset of barnacale communities in Lampung shores, in order to monitor developing of biofouling. Three coastal areas of Teluk Kunyit, Sariringgung and Mutun were investigated between April and November 2018. It was found that two species, Amphibalanus amphitrite and Microeuraphia withersii, are found in both costal areas. In contrast, only colonial species of Cthtamalus malayensis has been found abundance in Teluk kunyit area.Keywords: introduction, biofouling, intertidal zone, Lampung Bay
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Dreanno, Catherine, Richard R. Kirby et Anthony S. Clare. « Locating the barnacle settlement pheromone : spatial and ontogenetic expression of the settlement-inducing protein complex of Balanus amphitrite ». Proceedings of the Royal Society B : Biological Sciences 273, no 1602 (2 août 2006) : 2721–28. http://dx.doi.org/10.1098/rspb.2006.3649.

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Barnacles are prominent members of hard substratum benthic communities and their study has been important to advances in experimental ecology and contemporary ecological theory. Having recently characterized the cue to gregarious settlement of Balanus amphitrite , the settlement-inducing protein complex (SIPC), we use two polyclonal antibodies to examine the tissue distribution and ontogenetic expression of this glycoprotein. These antibodies were raised against two separate peptides located near the N- and C-termini of the SIPC and were used to detect the glycoprotein by western blotting and immunohistochemistry. By in situ hybridization we also show that the SIPC mRNA co-occurs with the expressed glycoprotein in the cuticles of both nauplius and cypris larval stages and the adult. In the larvae, the SIPC is expressed most strongly in the mouthparts and the hindgut of the stage 2 nauplius and in the thoracopods, antennules and bivalved carapace of the cyprid. In adult B. amphitrite , the expressed SIPC is present in protein extracts of the shell and in all organs that are lined by cuticular tissues. We suggest that the SIPC is produced by the epidermal cells that secrete the cuticle and discuss these observations with regard to earlier studies and the role of the SIPC as a contact pheromone.
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Shin, Hye-Jung, et Mi-Ok Shin. « Antimicrobial- and Anticarcinogenic Activities of Amphitrite albicostatu Fractions ». Journal of Life Science 20, no 10 (30 octobre 2010) : 1505–10. http://dx.doi.org/10.5352/jls.2010.20.10.1505.

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Bell, J. F., B. R. Hawke, J. C. Gradie, T. B. McCord et M. J. Gaffey. « Asteroid 29 Amphitrite - Surface Composition and Spectral Variation ». Publications of the Astronomical Society of the Pacific 97 (octobre 1985) : 892. http://dx.doi.org/10.1086/131708.

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Clare, Anthony S., et Jens T. Høeg. « Balanus amphitriteorAmphibalanus amphitrite ? A note on barnacle nomenclature ». Biofouling 24, no 1 (janvier 2008) : 55–57. http://dx.doi.org/10.1080/08927010701830194.

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Nong, Xu-Hua, Xiao-Yong Zhang, Xin-Ya Xu et Shu-Hua Qi. « Antifouling Compounds from the Marine-Derived Fungus Aspergillus terreus SCSGAF0162 ». Natural Product Communications 10, no 6 (juin 2015) : 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000659.

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A new cyclic tetrapeptide, asperterrestide B (1), and 11 known compounds (2–12) were isolated from a marine-derived fungus Aspergillus terreus SCSGAF0162. The structure of 1 was elucidated by spectroscopic analysis, and the absolute configuration of 1 was determined by Mosher ester and Marfey's methods. Compounds 4, 6, and 8 had potent antifouling activity against larvae of the barnacle Balanus amphitrite, with EC50 values of 17.1±1.2, 11.6±0.6, and 17.1±0.8 μg·mL-1, respectively.
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V.R. de Messano, Luciana, Leila Y. Reznik, Lucio Sathler et Ricardo Coutinho. « Evaluation of biocorrosion on stainless steels using laboratory-reared barnacle Amphibalanus amphitrite ». Anti-Corrosion Methods and Materials 61, no 6 (28 octobre 2014) : 402–8. http://dx.doi.org/10.1108/acmm-07-2013-1278.

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Purpose – The purpose of this paper was to use the barnacle Amphibalanus amphitrite reared in the laboratory to investigate the effects of juveniles on corrosion behaviour of three stainless steels (SS): UNS S31600, N08904 and UNS S32760. Design/methodology/approach – Barnacle larvae were maintained in a laboratory until they reached the cypris larval stage. A total of 100 cyprids were added to four individual containers; each SS coupon (70 × 50 × 2 mm3) was immersed into the containers. After the cyprids attached to the coupons, juveniles were reared for 21 days with the microalgae Skeletonema costatum (Greville) Cleve. Values of open circuit potential (OCP), breakdown potential (Eb) and polarisation resistance (Rp) were evaluated, along with surface examinations. Findings – OCP differences between barnacles and control coupons were not apparent. However, the lowest values of Eb and Rp were observed in the presence of juvenile barnacles, demonstrating the SS corrosion caused by these organisms. Crevice corrosion around the base of the barnacles was detected during visual inspections, despite the small size of the barnacles and the short duration of the experiments. Originality/value – The A. amphitrite assays were useful as a tool for testing corrosion behaviour of the SS under laboratory conditions. This was the first study to test the use of this common protocol in anti-fouling research as a method to study marine biocorrosion.
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Qiu, Jian-Wen, et Pel-Yuan Qian. « Effects of food availability, larval source and culture method on larval development of Balanus amphitrite amphitrite Darwin : implications for experimental design ». Journal of Experimental Marine Biology and Ecology 217, no 1 (septembre 1997) : 47–61. http://dx.doi.org/10.1016/s0022-0981(97)00037-3.

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Kredy, H. M., M. E. Aldokheily et I. H. Khlewy. « Comparison of mixed Ultrasound waves with the extracts of Nerium oleander L. on the growth of cyprid barnacles Balanus amphitrite Amphitrite ». Journal of Physics : Conference Series 1032 (mai 2018) : 012069. http://dx.doi.org/10.1088/1742-6596/1032/1/012069.

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Afsar, Anisul, Rocky De Nys et Peter Steinberg. « The Effects of Foul-release Coatings on the Settlement and Behaviour of Cyprid Larvae of the Barnacle Balanus amphitrite amphitrite Darwin ». Biofouling 19, sup1 (janvier 2003) : 105–10. http://dx.doi.org/10.1080/0892701021000057909.

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Farrapeira, Cristiane Maria Rocha. « Cirripedia Balanomorpha del estuario del Río Paripe (Isla de Itamaracá, Pernambuco, Brasil) ». Biota Neotropica 8, no 3 (septembre 2008) : 31–39. http://dx.doi.org/10.1590/s1676-06032008000300002.

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Los cirrípedos son animales característicos y abundantes en la región intermareal de los ambientes marinos y estuarinos de todo el mundo, pero son poco conocidos en las áreas de manglares tropicales. El presente estudio fue realizado con el objetivo de conocer las especies de cirrípedos en el estuario del Río Paripe (Pernambuco - Brasil), señalando algunas características de su distribución a lo largo del estuario. En la estación de estiaje de 2006, los animales fueron colectados en tres estaciones del estuario, en todos los substratos duros disponibles, observando su distribución vertical en los mismos. En la estación polihalina (salinidades variando de 28,7 hasta 36,1), se encontraron ocho especies: Amphibalanus amphitrite, A. improvisus, A. reticulatus, A. venustus, Chthamalus proteus, C. bisinuatus, Microeuraphia rhizophorae y Striatobalanus amaryllis. Las especies clasificadas como eurihalinas, encontradas hasta la región mesohalina del estuario (salinidades variando de 10,8 hasta 19,6) fueran: Amphibalanus amphitrite, A. improvisus, A. reticulatus, Chthamalus proteus y Microeuraphia rhizophorae, mientras que en la región oligohalina (salinidades variando de 0,2 hasta 5,2), solamente M. rhizophorae estuvo presente, sendo por tanto, clasificada como componente estuarino. Una zonación horizontal de especies de cirrípedos fue claramente observada a partir de la desembocadura hasta al montante del río, con disminución gradual del número de especies y fue confirmado su padrón de distribución vertical en relación a las alturas de mareas, observadas las respectivas valencias ecológicas. Las especies exóticas introducidas en Brasil, Amphibalanus reticulatus y Striatobalanus amaryllis, estaban bien adaptadas en los substratos naturales y artificiales del estuario.
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Rao, Xiaozhen, et Gang Lin. « Scanning electron microscopy of the cypris larvae ofCapitulum mitella(Cirripedia : Thoracica : Scalpellomorpha) ». Journal of the Marine Biological Association of the United Kingdom 94, no 2 (19 septembre 2013) : 361–68. http://dx.doi.org/10.1017/s0025315413001173.

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Adult specimens ofCapitulum mitellawere collected in August 2011 in the intertidal zone of Dinghai, Fuzhou, Fujian, China (26°16′N 119°48′E). The morphology of the cypris larva reared under our conditions was determined using scanning electron microscopy (SEM). Special emphasis was given to the carapace, lattice organs, antennules, thoracopods and furcal rami. The whole carapace surface is sculptured by slender ridges demarcating rectangular or irregular polygonal areas with very fine pores. The cyprid possesses five pairs of lattice organs, arranged as two anterior and three posterior pairs. The second segment carries a preaxial seta 2 and a postaxial seta 2. The third segment carries a postaxial seta 3 outside the attachment disc, whereas a postaxial disc seta, an axial disc seta and two radial disc setae are located inside the attachment disc. The attachment disc is somewhat bell shaped. A series of slender cuticular flaps forms a distinct ‘velum’ around the base of the disc. The fourth segment carries four subterminal setae and five terminal setae. The cyprid bears six pairs of biramous natatory thoracopods consisting of a protopod (coxa + basis), a two-segmented exopod and a two-segmented endopod. The cyprid possesses a rudimentary abdomen and an almost completely cleaved telson with a pair of one-segmented furcal rami. The morphology and setation of the antennules ofC. mitellaresemble those ofBalanus amphitrite(=Amphibalanus amphitrite) andMegabalanus rosa, but differ in some morphological details.
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