Genetic variation and population ecology of some southeast asian frogs of the genera Bufo and Rana
Genetic variation and population ecology of some southeast asian frogs of the genera Bufo and Rana
复制标题
一些东南亚蟾蜍属和林蛙属青蛙的遗传变异和种群生态学
作者：
R. Inger;H. Voris;Helen H. Voris
对东南亚7种无尾两栖类的种群结构与种群内遗传变异量的关系进行了研究。中华大蟾蜍（Bufo asper，B. parvus、小拟杆菌B. melanostictus、蛙（Rana blythi）和蛙（R. Arbitraea和R. hosei和R.研究了侧头肌;除B外的所有动物。melanostictus和R.杜鹃是森林物种。信息的分布特征，如一般的栖息地，形式的成人范围，非繁殖范围的繁殖地点的关系，在繁殖地点聚集的趋势，和繁殖聚集的大小被用来概述每个物种的繁殖结构的主要方面，并预测相对数量的基因变异。通过凝胶电泳检测蛋白质多态性，估计遗传变异。所用的测定方法为肝脏EST、FUM、GDH、LDH、MDH和总蛋白;肌肉EST、GOT、MDH和总蛋白;血浆EST和总蛋白。中华蟾蜍种群的变化模式与基于种群结构的预测一致，其中B。多态性最小的为B。melanostictus多态性最强，B.中间型蛙的种间差异没有蟾蜍那么大。虽然R.紫茎泽兰比R. blythi，R. Blythi在更多的带中具有多态性。R. hosei是最多态的研究蛙，但分布数据不足以解释为什么会这样。
The relationship between population structure and amount of genetic variation within populations has been investigated in seven species of anurans from Southeast Asia. Two populations each of Bufo asper, B. parvus, B. melanostictus, Rana blythi, and R. erythraea and one population each of R. hosei and R. laticeps were studied; all except B. melanostictus and R. erythraea are forest species. Information on distributional characteristics such as general habitat, form of the adult range, the relationships of nonbreeding range to breeding site, the tendency to aggregate at the breeding site, and the size of the breeding aggregation was used to outline major aspects of the breeding structure of each species and predict relative amounts of genic variation. Genetic variation was estimated from measures of protein polymorphism as detected through gel electrophoresis. The assays used were liver EST, FUM, GDH, LAP, LDH, MDH, and total protein; muscle EST, GOT, MDH, and total protein; plasma EST and total protein. The pattern of variation of the populations of Bufo species agreed with predictions based on population structure, with B. asper the least polymorphic, B. melanostictus the most polymorphic, and B. parvus intermediate. Interspecific differences were not as great in Rana as in Bufo. Although R. erythraea was more variable than R. blythi in terms of mean number of morphs per zone (as predicted from distributional characteristics), R. blythi possessed polymorphism at more zones. R. hosei was the most polymorphic Rana studied, but distributional data are insufficient to explain why this was the case.