Premium
Compensatory growth in the rainbow trout, Salmo gairdneri Richardson
Author(s) -
Dobson S. H.,
Holmes R. M.
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.tb04911.x
Subject(s) - rainbow trout , biology , salmo , compensatory growth (organ) , starvation , zoology , fish <actinopterygii> , fishery , weight gain , body weight , trout , endocrinology , kidney
The effect of a period of starvation and subsequent refeeding on the weight and length of rainbow trout at different times of the year has been investigated. Fish that have been starved for 3 weeks and then fed for 3 weeks show a weight gain equivalent to or greater than that of fish fed normally for the 6 week period, in four out of the five periods studied. The study provided evidence of the adaptation of the fish to starvation followed by what may be termed compensatory growth once feeding was resumed. The length changes of the fish indicate that the weight gains were due to growth rather than increases in gut fat deposits or increased water uptake.