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| Mahe, Kelig; Amara, R; Bryckaert, T; Kacher, M; Brylinski, J. |
| Analysis of the diet of trawl-caught hake (Merluccius merluccius) from three locations in the Bay of Biscay and the Celtic Sea in autumn 2001 showed that small hake fed almost exclusively on crustaceans (mainly euphausiids), but that there was a significant shift towards a fully piscivorous diet in hake > 23 cm. A change in fish prey was also size-dependent, because smaller hake (< 30 cm) preyed on small pelagic fish (3-12 cm), such as horse mackerel, anchovy, and pilchard, and larger hake on larger demersal prey (12-23 cm), such as blue whiting. There was a significant positive relationship between hake and fish prey length. In terms of fish prey selectivity, hake exhibited particular preference for small pelagic prey (anchovy, pilchard, and... |
| Tipo: Text |
Palavras-chave: Spatial variations; Prey selectivity; Northeast Atlantic; European hake; Diet; Cannibalism. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3849.pdf |
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| Morin, Jocelyne; Le Pape, Olivier; Amara, R; Mahe, Kelig; Gilliers, C. |
| Numerous marine fish species spend some time, within their biological cycle, in the restricted and unstable habitats that are coastal and estuarine feeding grounds. These ecosystems are essential for the growth and survival of young fishes. Some recent studies, conducted in the framework of the "Seine Aval 1 and 2" programs and of other projects, demonstrated that the Seine estuary was home to large numbers of juveniles (Morin et al., 1997) but that this estuary was subjected to a strong anthropic pressure interfering with the feeding ground function it should normally play. There is, indeed, a paradox between the nutritive availabilities provided by the estuary and the ichtyic communities exploiting this resource (Mouny, 1998); and this observation is... |
| Tipo: Text |
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| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/rapport-6594.pdf |
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| Amara, R; Bodin, P. |
| We tested the hypothesis that the absence of newly settled Dover soles (Solea solea) outside the estuarine nurseries of this species is due to a lack of suitable benthic prey. The availability of potential prey was studied at five stations within the distribution area of metamorphosing Dover sole on the northern continental shelf of the Bay of Biscay. Station locations ranged from the offshore spawning grounds to the coastal zone. Suitable feeding conditions for metamorphosing flatfish were found at all five stations. Harpacticoid copepods, the preferred prey of newly settled juvenile sole, are abundant and diversified on the spawning grounds where a majority of Dover sole larvae begin their metamorphosis. Furthermore, harpacticoid copepods were preyed... |
| Tipo: Text |
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| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00097/20855/18474.pdf |
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