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Feeding ecology and daily food consumption of common sole, Solea vulgaris Quensel, juveniles on the French Atlantic coast
Author(s) -
Lagardère J. P.
Publication year - 1987
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1987.tb05735.x
Subject(s) - biology , juvenile , predation , juvenile fish , food consumption , fish <actinopterygii> , zoology , ecology , fishery , body weight , metabolic rate , endocrinology , agricultural economics , economics
This study describes feeding rhythms in juvenile sole (0‐ and I‐groups) and differences in choice of prey according to age and feeding time. In the same biotype, 0‐group fish select amphipods or young opisthobranchs, whereas I‐group fish eat chiefly polychaetes such as Pectinaria koreni . The daily food consumption for juvenile soles in the field (T = 19.8°C) is estimated at 7% body dry weight in 0‐group and probably less in I‐group. When compared with estimates from previous methods or models, these rations are intermediate between estimates from Kuipers' method, with a gastric evacuation rate ( R ) per hour representing three times the amount of food in the stomach, and those from Elliott & Persson's model with R value around 1.46.