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Auteur (up) de Almeida Alves-Júnior, F.; Bertrand, A.; de á Leitão Câmara de Araújo, M.; José de Carvalho Paiva, R.; Fidelis de Souza-Filho, J. url  doi
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  Titre First Report of the Ectoparasitic Isopod, Holophryxus acanthephyrae Stephensen 1912 (Cymothoida: Dajidae) in the South Atlantic: Recovered from a New Host, the Deep-Sea Shrimp, Acanthephyra acanthitelsonis Spence Bate, 1888 Type Article scientifique
  Année 2019 Publication Revue Abrégée Thalassas  
  Volume 35 Numéro 1 Pages 13-15  
  Mots-Clés  
  Résumé The crustacean family of isopods, Dajidae, comprises 18 genera containing 54 species with widespread distribution. The species of this family are ectoparasites, especially on euphausiids, mysids and shrimps. The species of Holophryxus acanthephyrae has a life cycle involving a first intermediate host (copepod) and a definitive host (shrimp), and adheres particularly on deep-sea shrimps of genus Acanthephyra. Here, we make the first report of dajid isopod Holophryxus acanthephyrae from Brazilian waters (South Atlantic) and the first occurrence as parasite on deep-sea shrimp Acanthephyra acanthitelsonis. The specimen was collected under the framework of the project “ABRACOS 2” (Acoustic along the BRazilian COast), on board of R/V Antea in April 2017, using a Micronekton net (mesh size of 10 mm) in Rocas Atoll. The specimen female of Holophryxus acanthephyrae was found in pelagic zone in Rocas Atoll, at 630 m depth. This study increases the knowledge on Dajidae family and their host range.  
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  Langue en Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0212-5919, 2366-1674 ISBN Médium  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2302  
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Auteur (up) de Verdal, H.; O'Connell, C.M.; Mekkawy, W.; Vandeputte, M.; Chatain, B.; Begout, M.-L.; Benzie, J.A.H. doi  openurl
  Titre Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus Type Article scientifique
  Année 2019 Publication Revue Abrégée Aquaculture  
  Volume 505 Numéro Pages 271-279  
  Mots-Clés Agonstic behaviour; arctic charr; atlantic salmon; brain serotonergic activity; brown trout; conversion ratio; Correlation; dominance relationships; Feed efficiency; food acquisition; genetic-improvement; Nile tilapia; Performances; salvelinus-alpinus; social-status  
  Résumé Given the strong effects of behavioural hierarchies on growth in many cultured species and the key role of feed efficiency in aquaculture economics, understanding the nature of the interaction of these variables is important for the sustainability of aquaculture. The relationship between agonistic behaviour, growth and feed efficiency in Nile tilapia, Oreochromis niloticus, was studied by rearing 120 fish in eight aquaria. Fish were video-recorded to estimate the occurrence of agonistic behaviour during a fasting and a refeeding period. Growth, feed intake and feed conversion efficiency (FCE – calculated as the inverse of feed conversion ratio (FCR)) were subsequently measured individually for each fish. Fish showed 58% less agonistic traits during the fasting period compared to the feeding period, but generally, an aggressive fish during the fasting period was also aggressive during the refeeding period. The nature of agonistic behaviours between individuals was used to assess the presence of hierarchical relationships between fish. There were dominance hierarchies established in each experimental aquarium that despite minor shifts were maintained throughout the experiment. Agonistic behaviours were strongly correlated with each other, the aggression Index (AI) and with hierarchy rank. PCA analysis of the agonistic behaviours summarising the behavioural information showed little or no correlation between agonistic behaviour, fish growth or FCE. FCE was correlated with body weight gain (BWG). These results suggest that agonistic interactions in juvenile Nile tilapia do not have a large impact on growth and feed conversion efficiency.  
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  ISSN 0044-8486 ISBN Médium  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2583  
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Auteur (up) De Wit, R.; Vincent, A.; Foulc, L.; Klesczewski, M.; Scher, O.; Loste, C.; Thibault, M.; Poulin, B.; Ernoul, L.; Boutron, O. url  doi
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  Titre Seventy-year chronology of Salinas in southern France: Coastal surfaces managed for salt production and conservation issues for abandoned sites Type Article scientifique
  Année 2019 Publication Revue Abrégée Journal for Nature Conservation  
  Volume 49 Numéro Pages 95-107  
  Mots-Clés Coastal lagoon; Corine land cover 4.2.2; Delta; Halophytes; Microbial mats; Waterfowl  
  Résumé After World War II, twenty-nine coastal Salinas (122 km2), located in the vicinity of coastal lagoons and in deltas, were exploited along the Mediterranean coastlines in South France. Today, only five of these are still actively producing salt, currently representing 175 km2. Concomitant with the abandonment of many of the smaller Salinas, the larger Salinas in the Rhône delta (Camargue) strongly increased their surfaces at the expense of natural ecosystems, of which a part has also been abandoned after 2009. This paper documents these changes in landscape use by chronological GIS mapping and describes the fate of the 91 km2 of abandoned Salina surfaces. The majority of this area (88 km2) is included in the Natura 2000 network, among which most (74 km2) has been acquired by the French coastal protection agency (Conservatoire du Littoral) to be designated as Protected Areas. Only a very minor part (<1%) has been lost for industry and harbour development. Managing abandoned Salinas as Protected Areas is a challenge, because of the different landscape, biodiversity conservation, natural and cultural heritages issues at stake. In two cases, abandoned Salinas have been brought back again into exploitation by private initiative thus allowing for the protection of original hypersaline biodiversity. In other cases, the shaping of the landscape by natural processes has been privileged. This has facilitated the spontaneous recreation of temporal Mediterranean wetlands with unique aquatic vegetation, and offered opportunities for managed coastal re-alignment and the restoration of hydrobiological exchanges between land and sea. In other areas, former salt ponds continue to be filled artificially by pumping favouring opportunities for waterfowl. This has often been combined with the creation of artificial islets to provide nesting ground for bird colonies protected from terrestrial predators.  
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  Langue Langue du Résumé Titre Original  
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  Volume de collection Numéro de collection Edition  
  ISSN 1617-1381 ISBN Médium  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2570  
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Auteur (up) Delcourt, N.; Lagrange, E.; Abadie, E.; Fessard, V.; Fremy, J.-M.; Vernoux, J.-P.; Peyrat, M.-B.; Maignien, T.; Arnich, N.; Molgo, J.; Mattei, C. doi  openurl
  Titre Pinnatoxins' Deleterious Effects on Cholinergic Networks: From Experimental Models to Human Health Type Article scientifique
  Année 2019 Publication Revue Abrégée Mar. Drugs  
  Volume 17 Numéro 7 Pages 425  
  Mots-Clés acute neurotoxicity; block; cyclic imines; dinoflagellate; human intoxication; myasthenia gravis; myasthenia-gravis; neuromuscular-transmission; nicotinic acetylcholine receptors; nicotinic acetylcholine-receptors; pinnatoxins; rat diaphragm; toxicity; toxins; Vulcanodinium rugosum; vulcanodinium-rugosum  
  Résumé Pinnatoxins (PnTXs) are emerging neurotoxins that were discovered about 30 years ago. They are solely produced by the marine dinoflagellate Vulcanodinium rugosum, and may be transferred into the food chain, as they have been found in various marine invertebrates, including bivalves. No human intoxication has been reported to date although acute toxicity was induced by PnTxs in rodents. LD50 values have been estimated for the different PnTXs through the oral route. At sublethal doses, all symptoms are reversible, and no neurological sequelae are visible. These symptoms are consistent with impairment of central and peripheral cholinergic network functions. In fact, PnTXs are high-affinity competitive antagonists of nicotinic acetylcholine receptors (nAChRs). Moreover, their lethal effects are consistent with the inhibition of muscle nAChRs, inducing respiratory distress and paralysis. Human intoxication by ingestion of PnTXs could result in various symptoms observed in episodes of poisoning with natural nAChR antagonists. This review updates the available data on PnTX toxicity with a focus on their mode of action on cholinergic networks and suggests the effects that could be extrapolated on human physiology.  
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  Langue English Langue du Résumé Titre Original  
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  Volume de collection Numéro de collection Edition  
  ISSN 1660-3397 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000478650600036 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2622  
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Auteur (up) Delrieu-Trottin, E.; Williams, J.T.; Pitassy, D.; Driskell, A.; Hubert, N.; Viviani, J.; Cribb, T.H.; Espiau, B.; Galzin, R.; Kulbicki, M.; de Loma, T.L.; Meyer, C.; Mourier, J.; Mou-Tham, G.; Parravicini, V.; Plantard, P.; Sasal, P.; Siu, G.; Tolou, N.; Veuille, M.; Weigt, L.; Planes, S. doi  openurl
  Titre A DNA barcode reference library of French Polynesian shore fishes Type Article scientifique
  Année 2019 Publication Revue Abrégée Sci. Data  
  Volume 6 Numéro Pages 114  
  Mots-Clés complex; coral; islands; marquesas; moorea; serranidae; tool  
  Résumé The emergence of DNA barcoding and metabarcoding opened new ways to study biological diversity, however, the completion of DNA barcode libraries is fundamental for such approaches to succeed. This dataset is a DNA barcode reference library (fragment of Cytochrome Oxydase I gene) for 2,190 specimens representing at least 540 species of shore fishes collected over 10 years at 154 sites across the four volcanic archipelagos of French Polynesia; the Austral, Gambier, Marquesas and Society Islands, a 5,000,000 km(2) area. At present, 65% of the known shore fish species of these archipelagoes possess a DNA barcode associated with preserved, photographed, tissue sampled and cataloged specimens, and extensive collection locality data. This dataset represents one of the most comprehensive DNA barcoding efforts for a vertebrate fauna to date. Considering the challenges associated with the conservation of coral reef fishes and the difficulties of accurately identifying species using morphological characters, this publicly available library is expected to be helpful for both authorities and academics in various fields.  
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  ISSN ISBN Médium  
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  Notes WOS:000474846600003 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2606  
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