Comparisons of cultured triploid and diploid Atlantic salmon (Salmo salar L.)

Authors: O’Flynn F.M.¹; McGeachy S.A.²; Friars G.W.³; Benfey T.J.⁵; Bailey J.K.⁴

Source: ICES Journal of Marine Science, Volume 54, Number 6, December 1998 , pp. 1160-1165(6)

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Abstract:

The use of sterile, triploid salmon for aquaculture would be an effective method of preventing genetic interactions between cultured and wild salmon. The studies presented in this paper compare the performance of six year classes of triploid and diploid salmon in freshwater and seawater stages of commercial production. Freshwater growth was comparable between triploids and diploids. Freshwater survival was also similar between triploids and diploids except that survival was lower in the triploids for the developmental interval between fertilization and first feeding. In sea water, triploids performed better than diploids in terms of growth. However, survival was lower in triploids and they showed a higher incidence of jaw deformities. In summary, the overall yields of triploids was lower than diploids under culture conditions.

Keywords: deformities; growth; size; survival; triploidy

Language: English

Document Type: Research article

Affiliations: 1: School of Science, Department of Chemical and Life Sciences, Tralee Regional Technical College, Tralee, Co. Kerry, Ireland 2: 48 Hawthorne Ave, St Stephen, New Brunswick, E3L 1W6, Canada 3: Atlantic Salmon Federation, St Andrews, New Brunswick, E0G 2X0, Canada 4: Applied Breeding Technologies Inc., St Andrews, New Brunswick, E0G 2X0, Canada 5: Department of Biology, University of New Brunswick, Station A, Fredericton, New Brunswick, E3B 5A3, Canada

Publication date: 1998-12-01