贝类种群壳形态性状多态性研究进展

贝类壳形态具有丰富、复杂的多态性.壳形态作为贝类重要的数量性状是一种环境适应的进化,是不同生理功能适应其生活方式的结果,受环境和遗传因素影响,与贝类的生长、存活、代谢及繁殖等生态、生理行为密切相关.通过贝类可量可数性状建立的壳形态数值分类学方法已在贝类种群形态学比较及群体亲缘关系研究中广泛应用.本文对贝类种群壳形态性状...

Current trends in population research on shell morphological polymorphism of mollusks

Mollusks exhibit abundant and complex polymorphism in their shell morphology, resulting from adaptive evolution. The morphology of shellfish is a quantitative character that is closely associated with the ecological and physiological behaviors of bivalves, such as growth, survival, metabolism, and reproduction. Analysis of shell morphology is one of the principal methods of shellfish identification and has become an important index for germplasm evaluation and selective breeding. On the basis of quantitative trait comparison, numerical taxonomy methods to analyze mollusk shell morphology have been established. In an attempt to help researchers obtain the whole picture of shell morphological polymorphism and analytical methods, this article reviews current trends in shell morphological polymorphism research of shellfish and might be of valuable use to germplasm evaluation and selective breeding of shellfish varieties.