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Effect of strong winds on the nutritional condition of anchovy (Engraulis encrasicolus L.) larvae in the Bay of Biscay, Northeast Atlantic, as inferred from an early field application of the DNA/C index ArchiMer
Bergeron, Jean-pierre.
A new biochemical index was used to assess larval fish nutritional condition during a. survey cruise in the Bay of Biscay in early June 1993. This period corresponds to the breeding season of the European anchovy (Engraulis encrasicolus L.). The analysis of samples taken at grid points indicated a clear spatial pattern in nutritional condition, which increased from the middle shelf to the shelf edge. A relatively large fraction of the larval population proved to be in poor condition. Strong winds with speeds of 20-30 knots occurred during 3 d after the first survey and affected the vertical hydrological structure. During a subsequent survey, samples taken at approximately the same locations showed that anchovy larvae in all areas were in very poor...
Tipo: Text Palavras-chave: Windstress; Nutritional condition; Fish larvae; European anchovy; DNA/C; Bay of Biscay.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-449.pdf
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Teneur en ADN de la larve de Dicentrarchus labrax : évolution ontogénétique et effet de la privation de nourriture ArchiMer
Bergeron, Jean-pierre; Person, Jeanine.
Sea bass Dicentrarchus labrax larvae were hatched and reared for 34 days in the laboratory to test a recent biochemical index (DNA/C) of larval fish nutritional condition. Variations in DNA/C ratio values were monitored during the whole larval ontogenesis of fed individuals and the effect of starvation was assessed at three developmental stages. Three main periods in the relative DNA content variations were determined in close connection with growth patterns during larval ontogenesis.
Tipo: Text Palavras-chave: Dicentrarchus labrax; DNA/C; Nutritional condition; Starvation; Growth; Biochemical index.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00072/18300/15875.pdf
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