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Compensatory growth in juvenile roach Rutilus caspicus : effect of starvation and re‐feeding on growth and digestive surface area
Author(s) -
Abolfathi M.,
Hajimoradloo A.,
Ghorbani R.,
Zamani A.
Publication year - 2012
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.1095-8649.2012.03407.x
Subject(s) - compensatory growth (organ) , biology , juvenile , starvation , rutilus , zoology , fish <actinopterygii> , aquaculture , fishery , endocrinology , ecology , kidney
The aim of this study was to investigate compensatory growth in juvenile Rutilus caspicus during starvation and re‐feeding periods. The results confirmed the existence of compensatory growth in R. caspicus which depended on the duration of food deprivation. Complete compensatory growth occurred in the fish that were food deprived for at least 3 weeks. Starvation and re‐feeding had no significant effect on the digestive somatic index and intestinal surface areas in the fish that were food deprived for 1 week, while they showed a significant decrease and increase, during starvation and re‐feeding in the fish that were food deprived for 2 and 3 weeks. This knowledge may have application in aquaculture, as appropriate exploitation of compensatory growth can give increased growth rate and feeding efficiency.