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This study investigated the heritability of cold tolerance in juvenile Nile tilapia (Oreochromis niloticus). 80 full-sibling families were exposed to decreasing temperatures, and their temperature at death and cooling degree hours were recorded. Smaller fish were more susceptible to cold than larger fish. The heritability of cold tolerance was estimated to be low (0.08-0.09), but there was a considerable common environmental/full-sibling effect (0.27-0.33). The results suggest that increasing fish size befo

Author

Josue Escarcega

Language

EN