Selective breeding and crossbreeding are seen widely in genetic improvement of crops as well as molluscs. In this study, we constructed complete 4×4 diallel crosses using broodstock from 4 geographical subpopulations of sea scallops along the Atlantic coast of Canada, and heterosis and combining abilities in growth and survival rates at larval and adult grow-out stages were analyzed. The results indicated that variable heterosis in growth and survival exist in larval and adult stages. In many cases, the fitness traits increased with general combining abilities, especially at the larval stage, but in some cases, groups with high growth or survival rate but low general combining abilities were also observed. Reciprocal effects and maternal reciprocal effects were observed in growth and survival at the larval stage and also in adult growth. Two hybrid strains with superior growth and survival traits over purebred and other hybrid groups were selected that can be used in future culture practice.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.