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| Cresson, Pierre; Timmerman, Charles-andre; Cordier, Remy; Couvreur, Clemence; Denamiel, Margaux; Engler, Alexandra; Lebon, Fabien; Lepretre, Marie-anais; Marchal, Paul. |
| This document summaries major information about the diet of mackerel Scomber scombrus in the English Channel, collected during the VARITROPH project. Mackerel consume quite exclusively copepods, with low effect of size on both diet and trophic level. |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00675/78716/80902.pdf |
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| Cresson, Pierre; Timmerman, Charles-andre; Couvreur, Clemence; Denamiel, Margaux; Lepretre, Marie-anais; Marchal, Paul. |
| This document summaries major results about the diet of sole Solea solea and plaice Pleuronectes platessa in the English Channel, collected in the framework of the VARITROPH project. Both species have a similar diet, based on crustaceans, but plaice exhibit a larger diversity of secundary species (bivalves, annelids and echinoderms) than sole (annelids only). Diversity of the preys for plaice is explained by differences between size classes. Diet of small individuals is less diverse than the diet of large individuals. Trophic similarity between sole and plaice is also exhibited when comparing ontogenic changes of trophic levels, that are pretty similar for both species, and consistent with a diet based on small invertebrates. |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00675/78718/80904.pdf |
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| Timmerman, Charles-andre; Marchal, Paul; Denamiel, Margaux; Couvreur, Clemence; Cresson, Pierre. |
| An accurate description of trophic interactions is crucial to understand ecosystem functioning and sustainably manage marine ecosystems exploitation. Carbon and nitrogen stable isotopes were coupled with stomach content analyses to investigate whiting (Merlangius merlangus, Linnaeus, 1758) feeding behavior in the Eastern English Channel and Southern North Sea. Whiting juveniles and adults were sampled in autumn and winter to investigate both ontogenetic and seasonal changes. In addition, queen scallops (Aequipecten opercularis) samples were collected along with fish to be used as isotopic benthic baseline. Results indicated an ontogenetic diet change from crustaceans to fish and cephalopods. In autumn, δ15N values generally increased with fish size while... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00651/76359/77350.pdf |
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