Open AccessTHE USE OF INTERPOPULATION HYBRIDIZATION IN DEVELOPMENT OF COHO SALMON STOCKS FOR AQUACULTURE
Author(s) -
Hershberger W. K.
Publication year - 1978
Publication title -
proceedings of the annual meeting ‐ world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0164-0399
DOI - 10.1111/j.1749-7345.1978.tb00239.x
Subject(s) - oncorhynchus , biology , aquaculture , fishery , fish <actinopterygii> , population , zoology , demography , sociology
Three separate and apparently genetically distinct coho salmon ( Oncorhynchus kisutch ) stocks managed and reared by the Washington Department of Fisheries were crossed in a 3 times 3 factorial design. Data on early life history traits, such as mortality, time to 50% and 100% hatch, growth rate, and food conversion efficiency were taken for each of the nine possible crosses. Statistical analyses of the data demonstrated few significant differences among the crosses for traits expressed prior to the free feeding stage. After the fish started actively feeding, significant differences were found in growth rate and food conversion efficiency. These results could be explained in some instances by “hybrid vigor” and in other instances by the genes contained in one population. The data indicate that judicious use of in‐terpopulation crosses could provide significant gains in the early rearing of coho salmon for aquaculture.