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Plasma glucose and plasma fatty acid levels of Limanda limanda (L.) in relation to season, stress, glucose loads and nutritional state
Author(s) -
Fletcher D. J.
Publication year - 1984
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.1095-8649.1984.tb04910.x
Subject(s) - limanda , biology , endocrinology , ingestion , medicine , vitellogenesis , meal , zoology , dicentrarchus , fish <actinopterygii> , fishery , food science , embryo , oocyte , flatfish
The effects of season, stress, glucose loads and nutritional state on the plasma glucose (PG) and plasma fatty acids (PFA) of Limanda limanda were examined. Plasma glucose levels showed no seasonal variation while PFA exhibited two peaks during May to August, and in December respectively. These peaks may be associated with resorption of gonadal material after spawning and the mobilization of lipid reserves for vitellogenesis. Limanda showed a hyperglycaemic response to a brief aerial emersion, followed by a hypoglycaemic condition. Infusion of a glucose load and the ingestion of a satiation meal of Mytilus edulis tissue led to a reciprocal rise and fall of PG and PFA. Short‐term food deprivation had no effect upon PG although PFA rose significantly.