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Metabolic responses of fish larvae [ Rutilus vutilus (L.)] to forced activity (Cyprinidae, Teleostei)
Author(s) -
Krumschnabel G.,
Lackner R.
Publication year - 1992
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.1095-8649.1992.tb02701.x
Subject(s) - biology , rutilus , teleostei , cyprinidae , carp , larva , juvenile , glycolysis , fishery , zoology , fish <actinopterygii> , endocrinology , ecology , metabolism
Larvae of Rutilus rutilus (L.) weighing approx. 40 mg were exercised for 5 min by mechanical stimulation. Individual larvae were taken before and immediately after stimulation, and during 2 h of recovery. The concentrations of glucose, glucose‐6‐phosphate, pyruvate, lactate, 2‐oxoglutarate, and ascorbic acid were determined in individual larvae. The larvae recovered faster from forced activity than juvenile roach, recovery being complete after 1 h. Larvae also differed from juveniles in that metabolite levels increased less during activity. It is suggested that the combination of low glycolytic, and high oxidative capacity was responsible for the specific metabolic responses of the larvae.