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Registros recuperados: 149
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CHILEAN MARINE MOLLUSCA OF NORTHERN PATAGONIA COLLECTED DURING THE CIMAR-10 FJORDS CRUISE Gayana
Cárdenas,Javiera; Aldea,Cristian; Valdovinos,Claudio.
The tip of the South American cone is one of the most interesting Subantarctic areas, both biogeographically and ecologically. Nonetheless, knowledge of the area's biodiversity, in particular that of the subtidal marine habitats, remains poor. Therefore, in 2004, a biodiversity research project was carried out as a part of the cruise Cimar-10 Fjords, organized and supported by the Chilean National Oceanographic Committee (CONA). The results of the subtidal marine mollusk surveys are presented herein. The samples were collected aboard the Agor 60 "Vidal Gormaz" in winter 2004. The study area covered the northern Chilean Patagonia from Seno de Relocanví (41°31'S) to Boca del Guafo (43°49'S), on the continental shelf from 22 to 353 m depth. The Mollusca were...
Tipo: Journal article Palavras-chave: Biodiversity; Taxonomy; South America; Fjords; Polyplacophora; Gastropoda; Bivalvia; Scaphopoda.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382008000200010
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Морфология жаберного аппарата двустворчатых моллюсков в связи с загрязнением донных осадков IBSS Repository
Копытов, Ю. П.; Тимофеев, В. А.; Самышев, Э. З..
Исследована морфологическая структура жаберного аппарата Mytilus galloprovincialis, Chamellea gallina, Cerastoderma glaucum из прибрежных акваторий Крыма с разным уровнем загрязнения донных осадков. Выявлено существование компенсаторного механизма, позволяющего увеличивать интенсивность работы дыхательного аппарата в пессимальных условиях за счёт увеличения показателя приведённой удельной поверхности (S0). Ингибирование физиологического состояния моллюсков компенсируется повышением степени рассеченности жабр, что способствует выравниванию интенсивных обменных процессов.
Tipo: Journal Contribution Palavras-chave: Двустворчатые моллюски; Загрязнение среды; Адаптация; Bivalvia; Environmental pollution; Adaptation.
Ano: 2009 URL: http://repository.ibss.org.ua/dspace/handle/99011/1084
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Распределение двустворчатых моллюсков рода Hypanis Pander in Ménétriés, 1832 (Bivalvia, Cardioidea: Limnocardiidae) в Таганрогском заливе (Азовское море). IBSS Repository
Набоженко, М. В..
В статье рассматривается морфология, распределение, количественные характеристики популяций и роль в донных сообществах видов рода Hypanis в Таганрогском заливе Азовского моря. Вопрос о видовом составе рода в Таганрогском заливе является спорным. Различными авторами указывалось от 1 до 3 различных видов этого рода, в том числе и эндемиков лиманов и озер Северо-Западного Причерноморья. В заливе представлены два вида Hypanis: H. vitrea glabra и H. colorata. Виды четко отличаются строением лигаментов, створок раковин, мантийной и сифональной мускулатуры. Первый вид является вселенцем из Северного Каспия. Включение его в экосистему Таганрогского залива происходило, вероятно, неоднократно. Однако окончательное освоение вида в заливе произошло, видимо в конце 20...
Tipo: Journal Contribution Palavras-chave: Bivalvia; Hypanis; Таганрогский залив; Морфология; Распределение; Биомасса; Донные сообщества.
Ano: 2005 URL: http://repository.ibss.org.ua/dspace/handle/99011/908
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Accumulation and depuration of hydrocarbons in the mangrove oyster Crassostrea rhizophorae ArchiMer
Delcastillo, C; Corredor, J; Morell, J.
Adult specimens of Crassostrea rhizophorae were exposed to diesel oil dispersed in seawater. The experiment consisted of a 10 days contamination period and 15 days depuration period. Oyster samples were extracted, and analysed by gas chromatography and UV fluorescence spectroscopy. The concentrations of n-alkanes, branched alkanes, unresolved complex mixture (UCM) and aromatic hydrocarbons were determined. The oysters accumulated the hydrocarbons rapidly, reaching a maximum concentration of 387.5 ug/g (wet weight). After exposure to uncontaminated seawater, the oysters were able to reduce their hydrocarbon load to 5.6 ug/g. The data indicates that C. rhizophorae is capable of preferential accumulation and depuration of hydrocarbons. Apparently, the oysters...
Tipo: Text Palavras-chave: Crassostrea rhizophorae; Bivalvia; Fluorescence spectroscopy; Gas chromatography; Oyster culture; Hydrocarbons; Marine pollution; Accumulation; Self purification.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1602.pdf
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Depuration of copper nitrate and chloride in the Indian brown mussel Perna indica ArchiMer
Kondajii, N; Menon, N.
It is understood that the rate of bioaccumulation and subsequent depuration of heavy metals in marine animals is influenced by the chemical state, as well as the kinetics of transformation between different species of chemical salts dissolved in water. The Indian Brown mussel, Perna indica, was exposed to copper nitrate and chloride, individually, to analyse the rate of accumulation, depuration, oxygen uptake and filtration rates. When supplied in very low quantities, environmentally realistic concentrations, the rate of accumulation of copper nitrate and chlorides showed variations. When the animals were transferred to sea water, these two salts did not show any clear cut differences in the depuration rate. Irrespective of the previous accumulation...
Tipo: Text Palavras-chave: Perna indica; Bivalvia; Chlorides; Copper; Mussel culture; Heavy metals; Marine pollution; Accumulation; Self purification.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1603.pdf
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Ecosystemes benthiques profonds et chimiosynthese bacterienne: Sources hydrothermales et suintements ArchiMer
Laubier, Lucien.
Hydrothermal communities of various species compositions have been described from the eastern and western Pacific and Atlantic. Brine and cold seeps and hydrocarbon seepages have been found off Florida, off the Oregon and Japanese subduction systems, on the Laurentian Fan, near Barbados, and off Louisiana. Biomasses range from 10 to 70 kg/m super(2), fresh weight. Basic microdistribution of species groups in aureoles centered around hydrothermal vents reveals different levels of adaptation to harsh physico-chemical conditions. Two groups of primary producers can be recognized: a highly efficient cool water group with large vestimentiferan tube worms and bivalves, and alvinellid polychaetes adapted to hot waters. Both groups are exploited by specific...
Tipo: Text Palavras-chave: Bivalvia; Polychaeta; Bacteria; Symbionts; Biosynthesis; Chemosynthesis; Food webs; Biomass; Hydrocarbons; Ecosystems; Hydrothermal springs; Seepages; Brines; Benthic environment; Benthos.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/acte-1171.pdf
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Etude histoensymologique de la digestion chez Ruditapes philippinarum ArchiMer
Hily, A.
Examinations of alimentary tract and digestive tubules after feeding give evidence of continuous digestive process in juveniles of Ruditapes philippinarum . Histoenzymologic study of digestive tract suggests important intracellular enzymatic activities in stomacal epithelium, digestive gland and intestinal cells. Main part of intracellular digestion occurred in digestive cells by lysosyme associated with vacuolar system.
Tipo: Text Palavras-chave: Ruditapes philippinarum; Bivalvia; Digestive system; Enzymatic activity; Histology; Digestive glands; Digestion; Enzymes digestives; Digestion; Bivalve.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1180.pdf
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Etude experimentale preliminaire sur les echanges gazeux chez Pinna nobilis ArchiMer
Vicente, N; Riva, A; Butler, A.
Breathing exchanges of Pinna nobilis L. are studied in situ and in the laboratory with two methods. First method consist in introducing samples of Pinna under a 40l plexiglass bell equipped with haps. The bell is positionned by diving. The consumption of oxygen is observed with water samples and the oxygen concentration is measured with an electronic oxymeter. Experiments which are carried out during nycthemeral cycles are reproduced in the laboratory with the same type of bell. A second method carry into effect an apparatus more sophisticated, who put into circulation a current of water in an airtight thermostated cellule, where a specimen of young Pinna is introduced. This sample is gradually adaptated to the conditions of the medium. Breathing...
Tipo: Text Palavras-chave: Pinna nobilis; Bivalvia; Temperature; Metabolism; Oxygen consumption; Experimental research; Breathing mixtures; Marine molluscs.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-1761.pdf
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Diagnostic quantitatif de Perkinsus atlanticus (Apicomplexa, Perkinsea) chez les palourdes Ruditapes decussatus et Ruditapes philippinarum ArchiMer
Almeida, Manuela.
Le protozoaire parasite Perkinsus atlanticus (Azevedo, 1989) est une des causes des chutes de production de palourdes Ruditapes decussatus et R. philippinarum cultivées au Portugal, en Espagne et en Italie. Des modèles d'infection de Perkinsus ont été réalisés, par reproduction expérimentale de la maladie, pour étudier le rôle de la densité des palourdes, de la température et de la salinité sur le déroulement de la Perkinsiose. L'objectif de ce travail a été de développer une technique de diagnostic quantitative pour optimiser l'évaluation de l'intensité d'infection et détecter de faibles infections des palourdes par P. atlanticus. Le principe de cette technique consiste à cultiver tous les tissus de la palourde en milieu thioglycolate, suivi d'une lyse à...
Tipo: Text Palavras-chave: Pathologie; Protozoaire; Parasite; Perkinsus atlanticus; Bivalvia; Ruditapes decussatus; Ruditapes philippinarum; Diagnostic.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00033/14416/11710.pdf
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Ennemis et maladies des huîtres ArchiMer
Nedelec, Claude.
Une huître d'un an produit environ 100.000 larves; une de 2 ans près de 250.000 larves; une de 3 ans entre 700.000 et 800.000 et une huître de plus de 3 ans : un million en moyenne. Le nombre de larves libérées chaque année par un seul banc d'huîtres se chiffre ainsi par milliards (R. Ph. Dollfus). Mais beaucoup, parmi ces jeunes larves nageuses, sont la proie d'animaux planctoniques; un grand nombre d'entre elles sont entraînées au large, sont tuées et ne se fixent pas.
Tipo: Text Palavras-chave: Huîtres; Bivalvia; Maladies; Remède; Ennemis.
Ano: 1953 URL: http://archimer.ifremer.fr/doc/00003/11471/8030.pdf
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Mortalités d'huîtres japonaises sur le Banc de Ronce Les Bains : rapport provisoire au 4/8/88 ArchiMer
Bodoy, Alain; Garnier, Jacqueline; Geairon, Philippe; Chagot, Dominique; Grizel, Henri; Comps, Michel; Razet, Daniel.
Depuis le mois de juin 1988, les ostréiculteurs ont fait part de la présence de mortalités importantes sur le banc de Ronce (bassin de Marennes-Oléron), d'abord auprès de l'Ifremer et des Affaires Maritimes, puis des pouvoirs publics. Ces problèmes ont été évoqués lors d'une réunion en Préfecture de Charente-Maritime, le 4 juillet 1988. Il s'est alors avéré nécessaire de réaliser un constat de la situation notamment sur le banc de Ronce, et de faire le point sur les causes pouvant être à l'origine de la situation sur les mortalités survenues dans cette zone. Cette décision a été confirmée le 12 juillet, lors d'une réunion à la Sous-Préfecture de Rochefort. Le présent rapport présente les résultats scientifiques actuellement disponibles, ainsi que les...
Tipo: Text Palavras-chave: Mortalité; Météorolgie; Paramètres hydrologiques; Physiologie; Croissance; Bivalvia; Crassostrea gigas; Bassin de Marennes Oléron.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00086/19765/17406.pdf
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Phytoplancton des zones myticoles de la baie de Vilaine et intoxication par les coquillages. ArchiMer
Andresen Leitao, Maria Da Paz; Lassus, Patrick; Maggi, Pierre; Le Baut, Claire; Chauvin, Jacky; Truouet, Philippe.
Following 1978 and 1981 human poisoning by mussels in Vilaine Bay (France) a survey of potentially toxic dinoflagellates was conducted in that area in 1982. At the same time paralytic shellfish poison (PSP) analyses were made, the authors studied the dinoflagellates encountered in the intestinal guts of mussels from January to August 1982. Results failed to demonstrate an occurrence of PSP producing species, either by toxicological analysis or dinoflagellate persistency in the mussel guts.
Tipo: Text Palavras-chave: Mytilus edulis; Bivalvia; Marine mollusks; Stomach content; Toxicity; Phytoplankton; Biological poisons; Mussel culture.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-1853.pdf
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La mytiliculture dans le "Pertuis Breton": synthèse des travaux réalises de 1980 a 1992 ArchiMer
Dardignac, Marie-jose.
The studies carried out between 1980 and 1992 in the "Pertuis Breton" showed that mussels growth was systematically reduced near the coastline for an identical immersion time. No relationship was established between current pattern, stocking biomass and growth results. In contrast, poor growth was strongly correlated to seawater quality and especially to high seston load. The author suggests further studies which could confirm and complement these results: a better environment understanding through data acquisition, inclusion of additional parameters, studies on factors affecting shellfish quality. Furthermore, specific studies are proposed which are aimed at optimising mussel production in the Pertuis Breton. This includes a constant spat recruitment...
Tipo: Text Palavras-chave: Bivalvia; Recruitment; Spat; Mussel culture; Growth; Bouchot; Mytilus edulis; Pertuis Breton; Moule; Growth; Bouchot; Mytilus edulis; Pertuis Breton.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-1911.pdf
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Les peuplements benthiques du plateau insulaire de la Martinique et des zones bathyales adjacentes. Cas particulier de la malacofaune ArchiMer
Paulmier, Gerard; Durand, Francoise.
Several oceanographic surveys in Martinique waters with, as main objectives, either geological mapping and evaluating marine aggregate resources of research into deep water carcinologie resources, nafe produced interesting informtion on benthic pppulations situated from the infralittoral to the bathyal shelf, for the wole of faunistic groups and more specifically for the malacofauna. The distribution of the various faunistic group has been analysed in function to the bathymetric, edaphic and possibly, thermic factors. The infralittoral zones, up to the 20 metres isobath, and circalittoral, between 60  and 80 metres, are known to have the richest populations. Corals, sponges, polychaete annelida and molluscs are the best represented, numerically as well as...
Tipo: Text Palavras-chave: Ecologie; Sédimentologie; Bathymétrie; Peuplements; Benthos; Invertebrés; Communautés; Bivalves; Gastéropodes; Ecology; Sedimentology; Bathymetry; Settelment; Benthos; Invertebrates; Molluscs; Communities; Bivalvia; Gastropoda.
Ano: 1997 URL: https://archimer.ifremer.fr/doc/00480/59191/61880.pdf
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Dynamique et enzymologie de la digestion chez l'huitre Crassostrea gigas ArchiMer
Boucaud, C; Lebesnerais, C; Lubet, P; Lihrmann, I.
Feeding experiments carried out on Crassostrea gigas allowed the authors to set up the stages and the timing of the movement of food throughout the digestive tract. Various activities involved in digestion (glycosidases, esterases, and peptidases) were investigated histochemically in the digestive tract in order to localize the sites of absorption and the sites of protein and carbohydrate digestion. An explicative model of the different stages of digestion is proposed.
Tipo: Text Palavras-chave: Crassostrea gigas; Bivalvia; Cytology; Histochemistry; Histology; Digestive system; Enzymatic activity; Digestive glands; Digestion; Enzymes; Transit digestif; Digestion; Huitre; Crassostrea gigas.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1179.pdf
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Implantation et survie de Campylobacter jejuni/coli chez la moule Mytilus edulis ArchiMer
Minet, Jacques; Sauvager, F; Cormier, M.
Illnesses due to marine bivalvia consumption are mostly associated with viruses as causative agents. In more than the half of cases, this agent remains unidentifies, nevertheless. So far as bacteria are concerned, Salmonella are found firstly. Campylobacters represent a major cause of gastrointestinal disease, with Salmonella, among humans. Whether campylobacteriosis may be acquired from shellfishes remains unclear. We undertook to comparatively appreciate the survival of Campylobacter jejuni/coli and Salmonella typhimurium in seawater and contaminated mussels. Bacterial enumerations where performes using microbial cultures and specific (with immunofluorescence) direct viable counts (of substrate responsive bacteria). During laboratory contamination...
Tipo: Text Palavras-chave: Campylobacter coli; Campylobacter jejuni; Mytilus edulis; Bivalvia; Pathogenic bacteria; Seafood; Microbial contamination; Pollution effects; Bacteria; Sea water; Survival.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1606.pdf
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Development of a reverse transcription-PCR-DNA enzyme immunoassay for detection of "Norwalk-like" viruses and hepatitis A virus in stool and shellfish ArchiMer
Schwab, Kellogg; Neill, Frederick; Le Guyader, Soizick; Estes, Mary; Atmar, Robert.
Outbreaks of food- and waterborne gastroenteritis are being increasingly reported throughout the world. The analysis of environmental samples by ne,ver diagnostic techniques such as reverse transcription-PCR (RT-PCR) amplification of nucleic acid has begun to identify human enteric viruses (predominantly "Norwalklike" viruses [NLVs]) as the cause of many of these outbreaks. To streamline NLV detection from environmental samples such as shellfish, we have developed an RT-PCR-oligoprobe amplification and detection method using several new procedures that enable confirmed RT-PCR amplification and product detection in 1 day. The new steps include replacing reverse transcriptase and Tag polymerase with rTth polymerase, a heat-stable enzyme that functions as...
Tipo: Text Palavras-chave: Bivalvia; Immuoessay; DNA enzyme; Reverse transcription PCR; Detection method; Enteric virus.
Ano: 2001 URL: https://archimer.ifremer.fr/doc/2001/publication-1267.pdf
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Comparative karyological study of cupped oyster species ArchiMer
Leitao, Alexandra; Boudry, Pierre; Labat, Jean-philippe; Thiriot-quievreux, Catherine.
Chromosomes of six cupped oyster species were studied using karyometric analysis alter conventional Giemsa staining, and silver staining, Karyotypes of Crassotrea angulata (nine metacentric and one submetacentric chromosome pairs), C. sikamea (nine metacentric and one submetacentric chromosome pairs), C. virginica (eight metacentric and two submetacentric chromosome pairs), C, ariakensis (eight metacentric and two submetacentric chromosome pairs), C, gasar (six metacentric and four submetacentric chromosome pairs), and Saccostrea commercialis (eight metacentric and two submetacentric chromosome pairs) are distinguishable by the number and position of the submetacentric chromosome pair and by the location of nucleolus organizer regions, Comparative...
Tipo: Text Palavras-chave: Bivalvia; Cytotaxonomy; Karyotype; Chromosome; Cupped oyster.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/publication-2737.pdf
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Bilan d'étude sur la croissance de la moule (Mytilus edulis) sur bouchots et filières dans les Pertuis Charentais entre 2000 et 2005 (Réseau REMOULA) ArchiMer
Robert, Stephane; Soletchnik, Patrick; Le Moine, Olivier; Zanker, Sebastien.
En France, dans les pertuis Charentais plusieurs travaux de recherche ont été réalisés sur la moule (Mytilus edulis) dans les années 80 et 90 (1), (2), (3) 1. Ce n’est qu’en 1999 et 2000 que le programme européen Essence(2) a permis une comparaison entre l'élevage sur filières et l'élevage sur bouchots. Cette comparaison a mis en évidence une différence de croissance en partie liée au temps d'émersion des moules élevées sur bouchot (4), (5). Suite à ces résultats, la profession, représentée par les SRC de Ré Centre Ouest, et la Section Régionale Conchylicole Poitou- Charentes demande à Ifremer de mettre en place un réseau de suivi "biologique" dans les Pertuis Charentais.
Tipo: Text Palavras-chave: Bivalvia; Mytilus edulis; Croissance; Pertuis Charentais; Technique élevage; Bouchot.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00084/19487/17108.pdf
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Calcein staining of calcified structures in pearl oyster Pinctada margaritifera and the effect of food resource level on shell growth ArchiMer
Linard, Clementine; Gueguen, Yannick; Moriceau, Jacques; Soyez, Claude; Hui, Belinda; Raoux, Aurore; Cuif, Jean Pierre; Cochard, Jean-claude; Le Pennec, Marcel; Le Moullac, Gilles.
Marine mollusc shell growth has been widely measured using fluorochrome marking. In order to test the efficiency and reliability of calcein staining on P. margaritifera shells and pearls, the present study examined two administration methods, different concentrations and several immersion times.Immersion in a 150 mg.L-1 calcein solution for 12 h to 24 h appeared to be the best method for marking P. margaritifera shells. For pearl marking, injection of a 200 mg.L-1 calcein solution into the pearl pouch was the optimal method. Calcein marking was then used to measure the influence of food resource levels on the shell growth. Groups of 23-month-old P. margaritifera were fed at three trophic levels for two months. The two highest food levels tested (6 000...
Tipo: Text Palavras-chave: Bivalvia; Pearl; Shell; Growth; Scanning electron microscope.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00028/13907/11195.pdf
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