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| Registros recuperados: 38 | |
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| Leopold,Mardik F.; Philippart,Catharina J. M.; Yorio,Pablo. |
| This paper describes nocturnal, marine feeding behaviour in the Brown-hooded Gull (Larus maculipennis) in November 2009. The gulls assembled at night at the end of a long pier, running 800 m offshore into the Golfo Nuevo, at Puerto Madryn, Chubut Province, Argentina. Powerful lights predictably lighted the water around the end of the pier and attracted many small prey animals to the surface. Several hundreds of gulls, presumed to be local breeders, came every night to feed on this bounty, using various feeding techniques and taking several prey species and sizes. Potential prey items were caught to be identified by vertical plankton hauls. The gulls most likely took relatively large Isopoda (Idothea sp.), Polychaeta (Platynereis sp.) and fish larvae... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Marine invertebrates; Night light niche; Patagonia; Seabirds. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072010000200002 |
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| Jemaa, Mohamed; Morin, Nathalie; Cavelier, Patricia; Cau, Julien; Strub, Jean Marc; Delsert, Claude. |
| Long-lived animals show a non-observable age-related decline in immune defense, which is provided by blood cells that derive from self-renewing stem cells. The oldest living animals are bivalves. Yet, the origin of hemocytes, the cells involved in innate immunity, is unknown in bivalves and current knowledge about mollusk adult somatic stem cells is scarce. Here we identify a population of adult somatic precursor cells and show their differentiation into hemocytes. Oyster gill contains an as yet unreported irregularly folded structure (IFS) with stem-like cells bathing into the hemolymph. BrdU labeling revealed that the stem-like cells in the gill epithelium and in the nearby hemolymph replicate DNA. Proliferation of this cell population was further... |
| Tipo: Text |
Palavras-chave: Hematopoiesis; Adult somatic progenitor cells; Hemocytes; Mollusk; Marine invertebrates. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00197/30802/29172.pdf |
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| Godet, Laurent; Le Mao, Patrick; Grant, Cindy; Olivier, Frederic. |
| The first updated list of the marine invertebrate fauna of the Chausey archipelago (Normand-Breton Gulf, France) is presented. All publications regarding the natural history of the area, as well as the existing collections of marine invertebrates from 1828 to 2008 were examined. A total of 769 species (including 245 Arthropoda, 197 Mollusca, 146 Polychaeta), have been recorded in this area covering 5000 ha. This species richness is largely the result of the complexity of benthic habitatsof the archipelago and its long history of field work, dating back to the 19(th) Century. The historical data set of this region presents an opportunity to assess long-term changes in nearshore communities and to design conservation sites based on their scientific value. |
| Tipo: Text |
Palavras-chave: Chausey; Marine invertebrates; Inventory; Historical data. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00006/11696/8471.pdf |
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| Riou, V.; Bouillon, S.; Serrao Santos, R.; Dehairs, F.; Colaco, A.. |
| Bathymodiolus azoricus mussels thrive at Mid-Atlantic Ridge hydrothermal vents, where part of their energy requirements are met via an endosymbiotic association with chemolithotrophic and methanotrophic bacteria. In an effort to describe phenotypic characteristics of the two bacterial endosymbionts and to assess their ability to assimilate CO2, CH4 and multi-carbon compounds, we performed experiments in aquaria using C-13-labeled NaHCO3 (in the presence of H2S), CH4 or amino-acids and traced the incorporation of C-13 into total and phospholipid fatty acids (tFA and PLFA, respectively). 14:0; 15:0; 16:0; 16:1(n - 7) c+t; 18:1(n - 13) c+t and (n - 7) c+t; 20:1(n - 7); 20:2(n - 9,15); 18:3(n - 7) and (n - 5,10,13) PLFA were labeled in the presence of... |
| Tipo: Text |
Palavras-chave: Mid atlantic ridge; Mussel bathymodiolus azoricus; Methanotrophic bacteria; Marine invertebrates; Diversity; Organic compounds; Lipid composition; Dual symbiosis; Methane; Biomarkers. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00207/31868/30275.pdf |
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| Cavelier, Patricia; Cau, Julien; Morin, Nathalie; Delsert, Claude. |
| While our knowledge of bivalve gametogenesis has progressed in recent times, more molecular markers are needed in order to develop tissue imaging. Here, we identified stem cell and mitotic markers to further characterize oyster early gametogenesis, mainly through immunofluorescence microscopy. Intense alkaline phosphatase activity, a non-specific marker for stem cells, was detected on the outer edge of the gonad ducts at the post-spawning stage, suggesting an abundance of undifferentiated cells very early during the sexual cycle. This observation was confirmed using an antibody against Sox2, a transcription factor specific for stem or germline cells, which labeled cells in the gonad duct inner mass and ciliated epithelium early during the initial oyster... |
| Tipo: Text |
Palavras-chave: Germline cells; Cell cycle; Reproduction; Bivalve; Marine invertebrates. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52100/52809.pdf |
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| Ayari- Kliti, R.; Afli, A.; Aissa, P.. |
| L’étude des bryozoaires cheilostomes du Golfe de Tunis a été entreprise à partir des sédiments superficiels prélevés par drague. L’inventaire compte cinquante cinq espèces dont dix ont été signalées pour la première fois en Tunisie (Electra verticillata, Beania hirtissima, Porella concinna, Hemicylopora collarina, Escharina dutertrei, Celleporina caminata, Palmicellaria elegans, Turbicellepora coronopusoidea, Reteporella aporosa et Reteporella sudbournensis). La plupart des espèces rencontrées sont décrites morphologiquement essentiellement à l’aide de micrographies électroniques. Une clé d’identification taxonomique des genres correspondants a été établie. Actuellement, les cheilostomes en Tunisie comptent 184 espèces contre 174 recensées dans le dernier... |
| Tipo: Journal Contribution |
Palavras-chave: Biodiversity; Taxonomy; Marine invertebrates; Bryozoa. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5301 |
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| Pittman, S.J.. |
| Typically, coral reefs are dominated by sedentary colonial organisms. Species compositions are temporally and spatially dynamic and populations may be seen to interact through similar mechanisms as those observed in terrestrial plant communities. In these areas, intense competition for limited niche space, selects for varied defensive and offensive strategies and reproductive life history traits. |
| Tipo: Report |
Palavras-chave: Marine parks; Marine invertebrates. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/906 |
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| Varela, C.; Castellanos-Iglesias, S.; Ortiz-Toucet, M.; Orozco, M.V.. |
| Hidrozoos de aguas poco profundas fueron recolectados en 17 estaciones en julio del 2004. Las estaciones se localizaron en manglares, pastos marinos y arrecifes coralinos. Se encontraron hidrozoos de dos subclases (Anthoathecata y Leptothecata), 11 familias, 27 géneros y 34 especies. Se indican la localidad de recolecta, la profundidad, el tipo de sustrato, la descripción y las figuras de 15 especies de hidrozoos tecados. Se confirma la presencia de Hebellopsis communis Calder, 1991a y Antennella siliquosa (Hincks, 1877) para el Mar Caribe. Se expresa la abundancia relativa en tres categorías: abundante, común y rara. Las especies más abundantes fueron: Dynamena crisioides Lamouroux, 1824 en el hábitat de manglar, Cnydoscyphus marginatus (Allman, 1877) y... |
| Tipo: Journal Contribution |
Palavras-chave: Marine invertebrates; Shallow water; Inventories. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4164 |
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| Díaz Jaramillo, M.J.. |
| Se describe los principales aspectos morfológicos, reproductivos y de desarrollo larval de dos especies del género Prionospio, a partir de material colectado en la bahía de Corral y estuario del río Valdivia. Prionospio patagonica es un habitante común de fondos blandos, observándose principalmente al interior de los estuarios del Pacífico suroriental. A diferencia de descripciones morfológicas anteriores, esta especie presenta dos pares de ojos y no se observa una capa interna en sus ganchos encapuchados. La madurez sexual de estas especies, se produce a partir de los primeros meses de primavera, en donde se pueden encontrar hembras y machos con segmentos gametogénicos, aproximadamente a partir de individuos con más de 50 segmentos. Los gametos se... |
| Tipo: Theses and Dissertations |
Palavras-chave: Larval development; Marine invertebrates; Reproduction; Animal morphology. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4915 |
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| Sankaré, Yacouba. |
| Nous avons déterminé, à partir d'une étude bibliographique et de nos observations sur le terrain quarante deux espèces animales comprenant essentiellement des mollusques et des insectes. Ces animaux s'attaquent aux plantes flottantes Eichhornia crassipes, Pistia stratiotes et Salvinia molesta. Ils consomment ou détruisent indifféremment les plantes précitées sauf Neochetina bruchi, Neochetina eichhorniae et Sameodes albiguttalis qui s'attaquent spécifiquement à E. crassipes; Neohydronomus putchellus, Lanistes guinaicus et Pila africana broutent préférentiellement P. stratiotes; Cyrtobagous salviniae, Cyrtobagous singularis et Paulinia acuminata consomment uniquement S. molesta. |
| Tipo: Journal Contribution |
Palavras-chave: Aquatic plants; Marine invertebrates; Predators. |
| Ano: 1991 |
URL: http://hdl.handle.net/1834/5740 |
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| Rodríguez-Viera, L.; Rodríguez-Casariego, J.; Pérez-García, J. A.; Olivera, Y.; Perera-Pérez, O.. |
| En la actualidad existe poca información sobre la diversidad biológica en el golfo de Ana María dado que la mayoría de los estudios realizados sobre esta área tienen un enfoque pesquero o hidrológico. Esto provocó que en el año 2011 se iniciara un proyecto de investigación para contribuir en el llenado de este vacío de información. En este trabajo se presenta una lista de 105 nombres de especies de invertebrados marinos identificados en la zona central del golfo de Ana María. Los moluscos fueron los más representados con un total de 43 especies que constituyen el 40,9% de las especies identificadas, seguido por los equinodermos con 26 especies que representan el 24,8% del total. La mayor riqueza de especies se encontró en los cayos de mayor área... |
| Tipo: Journal Contribution |
Palavras-chave: Marine invertebrates; Check lists. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4640 |
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| Ocaña, F.A.; Apín, Y.; Cala, Y.; Vega, A.; Fernández, A.; Córdova, E.. |
| El objetivo del presente trabajo es realizar un inventario de los macroinvertebrados bentónicos y describir su estructura espacial en 15 playas de la costa oriental de Cuba. Se registró un total de 30 especies de las cuales ocho son poliquetos, ocho moluscos, 13 crustáceos y un cefalocordado. Las especies con mayor abundancia relativa fueron Donax striatus, D. denticulatus, Parhyalella nisbetae, Thalorchestia fritzi, Eurydice convexa, Emerita talpoida y Ocypode quadrata. En la zona supralitoral se encontraron solo cuatro especies. De ellas tres aparecen también en la zona intermareal. En la zona intermareal se presenta la mayor riqueza de especies (21); mientras en la zona sublitoral se encontraron 13 especies. Las playas protegidas con... |
| Tipo: Journal Contribution |
Palavras-chave: Marine invertebrates; Sandy beaches; Zonation (ecological). |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4546 |
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| Registros recuperados: 38 | |
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