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| Durieux, Eric; Begout, Marie-laure; Pinet, Patrick; Sasal, Pierre. |
| This study focused on the spatio-temporal variation in the host-parasite system, 0-group sole-digenean metacercariae, in nearshore coastal areas at relatively small spatial scale. 0-group soles were sampled using a standard beam trawl in April, May, June, August and October 2005 at nine different sites in the Pertuis Charentais area (Bay of Biscay, France). Sole density, size, Fulton's condition factor K and digenean metacercariae communities were analysed. 0-group sole concentrated in shallow and muddy areas where they accumulated digenean metacercariae. Parasite communities displayed strong spatial patterns tightly linked to the distribution of the first intermediate mollusc hosts. These parasitological data suggest that 0-group sole during their first... |
| Tipo: Text |
Palavras-chave: Flatfish; Juveniles; Trematodes; Parasite Community; Spatio-temporal Dynamics; Habitat Use. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00008/11924/8640.pdf |
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| Durieux, Eric; Farver, Thomas B.; Fitzgerald, Patrick S.; Eder, Kai J.; Ostrach, David J.. |
| Acetylcholinesterase (AChE) activity is one of the most common biomarkers of neurotoxicity used in aquatic organisms. However, compared to its extensive use as biomarker, the effects of natural factors onAChE activity remain unclear especially in estuarine fishes. The aim of this study was to evaluate the effects of natural factors on AChE activity of striped bass (Morone saxatilis) juveniles. Brain AChE activity was measured in YOY (Young-Of-Year) individuals collected monthly from August 2007 to January 2008 at 12 different sites in the San Francisco Estuary system. The spatio-temporal variability of AChE was analyzed relative to water temperature and salinity as well as fish size. AChE activity was highly positively correlated with water temperature and... |
| Tipo: Text |
Palavras-chave: Fish; Biomarker; Acetylcholinesterase; Brain; Temperature; Salinity; Size. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00008/11939/8642.pdf |
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| Durieux, Eric; Le Duigou, Mathieu; Millot, Sandie; Sasal, Pierre; Begout, Marie-laure. |
| Spontaneous swimming activity of 0-group common sole (Solea solea) was evaluated using a video-tracking system under laboratory conditions. An experiment was conducted during two consecutive days on individuals sampled in June, July, September and November (2004) in a coastal nursery ground (Pertuis Charentais, Bay of Biscay, France). The measured behavioural variables were: distance travelled and frequency of occurrence of burying, swimming and immobility. 0-group sole showed a relatively clear circadian activity in line with the artificial light conditions (day, twilight and night). Swimming activity of 0-group sole decreased drastically from June to July, thereafter remaining at a very low level in September and November. Such important changes reflect... |
| Tipo: Text |
Palavras-chave: Behaviour; Flatfish; Juvenile; Swimming activity; Video-tracking. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00008/11941/9096.pdf |
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| Durieux, Eric; Begout, Marie-laure; Sasal, Pierre. |
| We sampled 0-group sole juveniles (N = 174) in September and October 2003 in 9 major nurseries located along the French Atlantic coast (English Channel and Bay of Biscay). 0-group sole were infected with 3 genera of digenean metacercariae, Timoniella spp. (Acanthostomidae), Prosorhynchus crucibulum and Prosorhynchus sp. A (Bucephalidae), Podocotyle sp. (Opecoelidae), and an unidentified species of Digenea. Parasite infection levels in the English Channel nurseries were lower, and the community composition was different from Bay of Biscay nurseries. We hypothesize that the difference between geographic areas was due to differences in first intermediate host communities and, to a lesser extent, because of lower temperatures in the English Channel compared to... |
| Tipo: Text |
Palavras-chave: River flow; Habitat quality; Trematodes; Parasitism; Juveniles; Flatfish. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2640.pdf |
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| Durieux, Eric; Meekan, Mark G.; Ponton, Dominique; Vigliola, Laurent. |
| Six cohorts of the silver-stripe round herring Spratelloides gracilis, a fast-growing and short-lived tropical clupeid, were collected as juveniles and then as adults during austral summers from November to February in 1998–1999 and 1999–2000, using light traps in the Dampier Archipelago, Western Australia. Otolith analysis allowed backcalculation of size and growth rate at age to examine the relative influences of selective mortality and water temperature on early growth. Negative sizeselective mortality and growth-selective mortality between the juvenile and the adult stages was found only in the cohort that was the smallest and slowest growing in the period immediately following hatching. Selective mortality preferentially removed members of this cohort... |
| Tipo: Text |
Palavras-chave: Environmental factors; Indo-Pacific region; Life-history traits; Otolith; Pelagic fishes; Size. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00008/11940/8643.pdf |
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| Durieux, Eric; Galois, Robert; Begout, Marie-laure; Sasal, Pierre; Lagardere, Francoise. |
| Little attention has been paid to flatfish parasitism as a potential factor of variation in year-class strength. The aim of this study was to evaluate the relationship between parasitic infection and nutritional condition of young-of-year (YOY) common sole. Sole were collected monthly from May (early settlement) to November 2004 in a mussel pole culture area, using a push-net or a trawl, and dissected for parasite identification and counts. Total lipids were extracted from the whole body and lipid classes quantified. Triacylglycerols to sterols (free form) ratio (TAG/ST) was used as an index of nutritional status. Digenean metacercariae infection, characterized by two dominant genera, displayed clear seasonal dynamics and the highest records yet reported... |
| Tipo: Text |
Palavras-chave: Nursery; Metacercariae; Parasitism; Lipid condition; YOY; Sole. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2512.PDF |
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| Durieux, Eric; Mahe, Kelig; Labonne, Maylis; Morin, Jocelyne; Brind'Amour, Anik. |
| Les zones côtières telles que les baies et les estuaires constituent des nourriceries pour les juvéniles de nombreuses espèces de poissons marins et en particulier les poissons plats. In fine, la fonction de nourricerie d’un habitat repose sur sa capacité à produire des individus qui vont contribuer à la population adulte. La composition élémentaire des otolithes de poissons est devenue un outil important pour étudier la connectivité entre les habitats des juvéniles et des adultes. Cette approche majeure en écologie halieutique repose sur l’identification de signatures multi-élémentaires caractérisant les nourriceries. Il est donc important de considérer les processus spatiaux à plus petite échelle de manière à identifier localement les habitats de... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00220/33153/31641.pdf |
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