海洋科学2015，Vol.39Issue(11)：86-90,5.DOI:10.11759/hykx20150805002
长牡蛎外套膜色遗传规律初步研究
Inheritance of mantle pigmentation in selected families of the Pacific oyster Crassostrea gigas
摘要
Abstract
In the interest of increasing the value of the Pacific oyster (Crassostrea gigas) sold as "singles" for the half-shell market, we explored the feasibility of modifying mantle pigmentation through selective breeding. The experimental 12 full-sib families of pedigreed oysters were investigated for growth, survival and mantle pigmentation. Initial investigations showed the trait was complex and best described as 1-4 degrees. At 350 and 450 days old, no significant survival and shell height difference were found among different families (P>0.05) which showed that the performance traits of growth and survival were not correlated with mantle pigmentation. The distributions of pigmentation levels among individuals within full-sib families were further examined. High within-family variation in mantle pigmentation that in the hybrid and control families was normally and continuously distributed. However, offspring within three BB families, the 4 degree mantle was dominant absolutely. Furthermore, offspring within YY2 family segregated into phenotypically distinct "lighter" and "darker"mantle groups in a 3:1 ratio supporting the hypothesis that a single major gene is segregating in these families with the "light" allele being dominant over the "dark" allele. These findings will facilitate the selection of desired mantle coloration lines for oyster aquaculture.关键词
长牡蛎(Crassostreagigas)/外套膜色/家系/遗传规律Key words
Crassostrea gigas/mantle pigmentation/families/hereditary分类
农业科技引用本文复制引用
王庆志,李琪,丛日浩,孔宁,孔令锋,于红..长牡蛎外套膜色遗传规律初步研究[J].海洋科学,2015,39(11):86-90,5.基金项目
国家高技术研究发展计划项目(2012AA10A405-6) （2012AA10A405-6）
国家自然科学基金项目(31372524) （31372524）
辽宁省水产优势品种引进更新与改良项目(201501) （201501）
