Data/hora: 16/06/2024 01:08:15

Provedor de dados: | 5
País: | France
Título: | Seasonal and ontogenetic variation of whiting diet in the Eastern English Channel and the Southern North Sea
Autores: | Timmerman, Charles-andre; Marchal, Paul; Denamiel, Margaux; Couvreur, Clemence; Cresson, Pierre.
Data: | 2020-09
Ano: | 2020
Resumo: | 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 in winter, a decrease of δ15N values with fish size was observed, as a potential result of spatial variation in baseline δ15N values. In winter, a nutrient-poor period, an increase in feeding intensity was observed, especially on the copepod Temora longicornis. This study provides further insights into whiting trophic ecology in relation to ontogenetic and seasonal variations, and it confirms the importance of combining several trophic analysis methods to understand ecosystem functioning.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00651/76359/77350.pdf

https://archimer.ifremer.fr/doc/00651/76359/77351.docx

https://archimer.ifremer.fr/doc/00651/76359/77352.docx

https://archimer.ifremer.fr/doc/00651/76359/77353.docx

DOI:10.1371/journal.pone.0239436

https://archimer.ifremer.fr/doc/00651/76359/

Editor: | Public Library of Science
Formato: | application/pdf
Fonte: | Plos One (1932-6203) (Public Library of Science), 2020-09 , Vol. 15 , N. 9 , P. e0239436. (20p.)

Fonte:

info:eu-repo/semantics/openAccess

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