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Registros recuperados: 9
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Déterminisme du recrutement larvaire de l’huître creuse (Crassostrea gigas) dans la lagune de Thau. ArchiMer
Lagarde, Franck; Fiandrino, Annie; Richard, Marion; Bernard, Ismael; Mortreux, Serge; Ubertini, Martin; Chiantella, Claude; Boj, Marie; Meddah, Slem; Leurion, Axel; Soriano, Solenn; Fuhrmann, Marine; Le Gall, Patrik; Chiera, Caroline; Berteaux, Tom; Guillou, Jean-louis; Roque D'Orbcastel, Emmanuelle; Perignon, Adeline; Bonnet, Delphine; Roques, Cecile; Bec, Beatrice; Cochet, Helene; Gervasoni, Erika; Miron, Gilles; Pouvreau, Stephane.
Since spat mortality events that were firstly detected in 2008, Mediterranean shellfish industry seeks to exploit the Pacific oyster spat from lagoon natural recruitment. The CRCM, Cepralmar and Ifremer developed accordingly a research project named PRONAMED Phase 1 and 2 - 2010-2014, in order to define the economic potential of spatfall and improve knowledge of the reproductive cycle of Crassostrea gigas in this specific environmental context. The results of the past three year‘s study (2012, 2013, 2014) showed that broodstock have the ability to provide larvae after sexual maturation and spawning. A coincidence was noted between moon phase (new and full moon) and spawnings with an amplifying effect of storms on the intensity of spawning (Ubertini et al....
Tipo: Text Palavras-chave: Lagune; Recrutement; Naissain; Huître creuse; Ecologie larvaire; Cycle de reproduction; Captage naturel.; Lagoon; Recruitment; Spat; Pacific oysters; Larval ecology; Reproduction Cycle; Natural spat collection..
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00279/39054/37620.pdf
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Écologie de la reproduction de l’huître Crassostrea gigas en lagune méditerranéenne ArchiMer
Lagarde, Franck.
The Mediterranean lagoons host many anthropogenic uses including shellfish aquaculture since the beginning of the 20th century. Imported in 1970, the cupped oyster, Crassostrea gigas, has adapted perfectly and has allowed an important development of oyster’s industry until 2008, the year of occurence of spat outbreak related to the emergence of an Ostreid Herpes-virus μvar. The scarcity of spat and the speculation on this product changed regionally cultural practices and the supply of juveniles, with in particular the wish of developing a local activity of spat collection. However the cycle of reproduction of the species and the recruitment of juveniles were poorly known in lagoon environments. In this context, the objective of this thesis is to...
Tipo: Text Palavras-chave: Huître; Écologie larvaire; Ressource trophique; Connectivité; Recrutement; Lagune côtière; Oyster; Larval ecology; Trophic resource; Connectivity; Recruitment; Coastal lagoon.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00472/58347/60901.pdf
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Ecologie larvaire de l'huître perlière (Pinctada margaritifera, L.), croissance et dispersion dans un lagon d'atoll polynésien ArchiMer
Thomas, Yoann.
Understanding key factors determining the bentho-pelagic species larval growth and dispersal remains one of the challenges of marine ecology, notably to understand the adult population structure and dynamics. In the present study, we explore this determinism on the development and dispersal of the black-lip pearl oyster (Pinctada margaritifera var. cumingii, Linné 1758) larvae in a French Polynesian atoll lagoon (Ahe, Tuamotu archipelago). Rearing of the pearl oyster for the production of black pearls takes on a major social and economic place in French Polynesia. However, the supply of pearl oyster seed to the farms depends entirely on the natural collection of wild spat of the only one specie P. margaritifera, and spatial and temporal variability of spat...
Tipo: Text Palavras-chave: Ecologie larvaire; Hétérogénéité environnementale; Modélisation; Croissance; Dispersion; Huître perlière à lèvres noires; Pinctada margaritifera; Lagon d’atoll; Polynésie française; Larval ecology; Environmental heterogeneity; Modeling; Growth; Dispersal; Black-lip pearl oyster; Pinctada margaritifera; Atoll lagoon; French Polynesia.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00003/11449/7999.pdf
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First record and ecological features of Goeldichironomus petiolicola (Diptera: Chironomidae) mining Eichhornia crassipes in the Middle Paraná River floodplain, Argentina Rev. Soc. Entomol. Argent.
Montalto,Luciana; Capello,Soledad; Paggi,Analía C..
The first records from Argentina of larvae of Goeldichironomus petiolicola Trivinho-Strixino & Strixino mining in Eichhornia crassipes (Martius) Solms petioles in wetlands of the Paraná River floodplain were analyzed. G petiolicola larvae and pupae were collected seasonally during 2005 from stands of E. crassipes and bottom sediment samples in floodplain habitats. Larvae inside E. crassipes petioles were reared with the purpose of obtaining their complete life cycle. G. petiolicola was the most abundant chironomid species living inside E. crassipes petioles; the III and IV instar larvae and pupae were found during all the seasons while the I and II instar larvae were not found. The highest average densities of G. petiolicola larvae inside the E....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chironomidae; Eichhornia crassipes miner; Larval ecology; Wetlands.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802012000100013
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Fish larvae from the upper Paraná River: do abiotic factors affect larval density? Neotropical Ichthyology
Baumgartner,Gilmar; Nakatani,Keshiyu; Gomes,Luiz Carlos; Bialetzki,Andréa; Sanches,Paulo Vanderlei; Makrakis,Maristela Cavicchioli.
The purpose of this study was to evaluate the role of abiotic factors on fish larvae occurrence. Samplings were carried out monthly at 12 stations (grouped in four areas) in the Amambaí, Ivaí and Paraná rivers and in the Itaipu Reservoir (upper Paraná River basin), from October 1994 to January 1995 (spawning season). Simultaneously, we obtained water temperature, pH, electrical conductivity, dissolved oxygen, water level, water velocity, and rainfall. Principal Component Analyses (PCA) and Detrended Correspondence Analyses (DCA) were applied to summarize abiotic and larvae density data, respectively. Amambaí River differed significantly from the other areas in relation to abiotic factors. Itaipu Reservoir differed significantly from the other areas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Larval ecology; Spatial distribution; Floodplain; Itaipu reservoir; Larval drift.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400002
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Patterns of larval distribution and settlement of Concholepas concholepas (Bruguiere, 1789) (Gastropoda, Muricidae) in fjords and channels of southern Chile RChHN
MOLINET,CARLOS; ARÉVALO,ALEJANDRA; GONZÁLEZ,MARÍA TERESA; MORENO,CARLOS A.; ARATA,JAVIER; NIKLITSCHEK,EDWIN.
The distribution of Concholepas concholepas (Mollusca, Gastropoda, Muricidae) is limited to the coasts of Chile and southern Peru. Almost all studies of this gastropod have been carried out in open coastal systems, rather than the fjords and channels of southern Chile, despite the fact that this area represents ca. 95 % of the total coastline in this country. Although there is a large volume of background literature on C. concholepas, almost nothing is published about early larval development under natural conditions, mostly because early veligers have rarely been found in nature. This study is the first attempt to determine the spatial and temporal abundance and size patterns of C. concholepas larvae in their natural environment throughout all of their...
Tipo: Journal article Palavras-chave: Larval ecology; Larval development; Veliger larvae; Fjords and channels; C. concholepas.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000300005
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Recruitment of the Pacific oyster Crassostrea gigas in a shellfish-exploited Mediterranean lagoon: discovery, driving factors and a favorable environmental window ArchiMer
Lagarde, Franck; Roque D'Orbcastel, Emmanuelle; Ubertini, Martin; Mortreux, Serge; Bernard, Ismael; Fiandrino, Annie; Chiantella, Claude; Bec, Beatrice; Roques, Cecile; Bonnet, Delphine; Miron, Gilles; Richard, Marion; Pouvreau, Stephane; Lett, Christophe.
In the context of increasing demand for environmental recovery, aquatic systems may face the challenge of evolving under oligotrophication. This is the case in Mediterranean lagoons, in particular the shellfish-farmed Thau lagoon in France, where we studied recruitment of the Pacific oyster Crassostrea gigas. Oyster spat and environmental parameters were monitored at several sampling sites for 3 yr (2012 to 2014) using an original method with a temporal overlap deployment of collectors to study pre- and post-settlement processes and to identify the best conditions for recruitment. Contrary to the ‘no Pacific oyster reproduction’ paradigm in Mediterranean lagoons, our study showed that recruitment of this introduced species is possible in the Thau lagoon at...
Tipo: Text Palavras-chave: Crassostrea gigas; Oyster spat; Pediveliger; Metamorphosis; Recruitment; Oligo trophication; Larval ecology.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00398/50899/51672.pdf
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Temperature effect on survival, growth, and triacylglycerol content during the early ontogeny of Mytilus edulis and M. trossulus ArchiMer
Rayssac, Nathalie; Pernet, Fabrice; Lacasse, Olivia; Tremblay, Rejean.
Temperature is a major factor contributing to the biogeography of intertidal poikilotherms. The population dynamics of intertidal invertebrates like mussels are strongly dependent on larval supply and larval mortality. Unlike adults, which are resistant to fluctuating environmental conditions, larvae are highly sensitive to the physicochemical conditions of the pelagic zone. The effects of rearing temperature on larval and post-larval performance of 2 coexisting mussels species, Mytilus edulis and M. trossulus, were examined in this study. In the first experiment, larvae of both species were reared separately at constant temperatures of 10, 17, and 24 degrees C from D-larvae to the dissoconch stage. In the second experiment, pediveligers were reared under...
Tipo: Text Palavras-chave: Thermal adaptation; Bivalve mollusk; Selection; Biogeography; Lipid; Larval ecology.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00019/13028/10159.pdf
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Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters ArchiMer
Lagarde, Franck; Richard, Marion; Bec, Beatrice; Roques, Cecile; Mortreux, Serge; Bernard, Ismael; Chiantella, Claude; Messiaen, Gregory; Nadalini, Jean-bruno; Hori, Masakazu; Hamaguchi, Masami; Pouvreau, Stephane; Roque D'Orbcastel, Emmanuelle; Tremblay, Rejean.
Reproduction and recruitment of benthic invertebrates are influenced by the climate and by the ecological structure of marine ecosystems, along with local anthropogenic pressures such as eutrophication or oligotrophication. Using the Pacific oyster Crassostrea gigas as a biological model, we tested the hypothesis that the variability in prodissoconch II (PII) size (i.e. size at metamorphosis) depends on ecological functioning. Settlement and recruitment were assessed at 5 sampling sites on the French Mediterranean shellfish farmed Thau lagoon during the main summer recruitment events in 3 consecutive years (2012-2014). Hydrobiological and planktonic analyses were conducted at 3 sampling sites. Our results showed that recruitment was extremely...
Tipo: Text Palavras-chave: Larval ecology; Recruitment; Prodissoconch II; Crassostrea gigas; Oligotrophication; Cryptophytes; Thau lagoon.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00454/56613/58334.pdf
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