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Some effects of temperature, meal size and body weight on gastric evacuation time in the dab Limanda limanda (L)
Author(s) -
Jobling M.,
Gwyther D.,
Grove D. J.
Publication year - 1977
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.1095-8649.1977.tb05134.x
Subject(s) - limanda , meal , biology , zoology , body weight , food intake , gastric emptying , stomach , repeatability , food science , fish <actinopterygii> , fishery , chemistry , endocrinology , chromatography , biochemistry , flatfish
Gastric emptying time in the dab, Limanda limanda , has been studied using an X‐ray technique. The addition of 25 % barium sulphate to a test meal did not significantly affect the transit time. Lowering the experimental temperature from 16.4 to 8.5°C markedly decreased gastric evacuation time. An increase in ration size led to an increase in the time required to empty the stomach and also to increase the amount of food digested per unit of time. For any given ration size, expressed as per cent body weight, the larger the animal the longer is the time required for evacuation of that meal. We suggest that the food intake per day, as a percentage of live body weight, will be smaller for larger L. limanda in the wild.