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为了评估熊本牡蛎左壳放射嵴有无对其生产性能的影响,于2013年5月,以熊本牡蛎湛江群体子一代作为基础群体,筛选出无嵴及多嵴品系,采用繁殖生物学方法,比较了两个品系的表型性状差异。结果显示,野生群体中,多嵴亲本规格略大于无嵴亲本,鲜重、壳重及怀卵量均显著大于无嵴亲本;两个品系的受精孵化参数、D型幼虫大小及变态规格彼此间无显著差异;多嵴品系存活力及生长潜力在幼虫及养成期间显著高于无嵴品系。中间育成期间,湛江及大风江牡蛎养殖区环境对两品系生长性状造成了一定程度影响,表现出明显的环境效应,但是对存活力尚未造成影响。熊本牡蛎左壳放射嵴无相对于有是显性性状,主要受到一对显性基因控制,而多嵴性状是隐性性状,可以稳定遗传。研究为熊本牡蛎多嵴品系培育及其左壳放射嵴遗传机制奠定了坚实的理论基础与实践经验。
In order to evaluate the influence of the radiocarities of the left shell of Kumamoto oyster on its performance, in May 2013, the population of ridges and ridgeless ridges of Zhanjiang population of the Kumamoto oyster was selected as the basic population. Breeding biology method was used to compare The phenotypic traits of the two strains were different. The results showed that in the wild population, the multi-ridge parents were slightly larger than those without ridge, and the fresh weight, shell weight and egg-laying amount were significantly greater than those without ridge. The fertilization hatching parameters, D-larval size and metamorphosis There was no significant difference between them. The viability and growth potential of the ridges were significantly higher than those of the ridges during larval development. During the middle breeding period, the environment of the oyster culture zone of Zhanjiang and Fengfengjiang affected the growth traits of the two lines to a certain extent, showing obvious environmental effects, but had no impact on the viability. The radiation crest of the left shell of Kumamoto oyster was no dominant trait relative to that of the control group, which was mainly controlled by a pair of dominant genes. However, the multi-ridge trait was a recessive trait and could be inherited stably. The research has laid a solid theoretical foundation and practical experience for the cultivation of ridges and crest ridges in the Kumamoto oyster ridge.