| 文件类型： |
文章 |
| 所有的著者/提供者： |
James Ernest Platz |
| ISSN: | 0045-8511 |
|---|
| OCLC号码： |
483759506 |
| 语言注释： |
English |
| 注意： |
Fig. 1. Collecting sites used in this paper for members of the Rana pipiens complex in Arizona. Allopatric populations are: Lowland type (open triangles), Northern type (open circles), and Southern type (solid circles). Sympatric populations between Northern and Southern types (split circles) and Lowland and Southern types (solid circles with superimposed open triangles) are also shown. The numbers refer to the location of collecting sites as they appear in Table 1.
Fig. 2. Geographic variation in allele frequencies at the Mdh 1 locus for populations of Southern type where N ≥ 20. Each allele is represented by one of the symbols figured in the insert in the upper right hand corner. |
| 奖励： |
|
摘要：
Evaluation of electrophoretic and morphological traits reveals three distinct members of the Rana pipiens complex present in Arizona. Examination of 653 frogs from 34 sites indicates that these three forms, designated Northern, Southern and Lowland, are largely allopatric and can be distinguished from each other morphologically. Where geographic replacement occurs, the transition is discontinuous with respect to protein phenotypes and associated morphology. The Southern type is sympatric at a number of locations with either the Lowland or the Northern form. Where sympatry occurs the morphotypes and their associated protein patterns remain essentially distinct except for occasional hybrids. Ten Northern-Southern F<sub>1</sub> hybrids and three backcrosses have been identified among 143 individuals from sympatric sites. Only F<sub>1</sub> hybrids (3/43) were detected among the 96 individuals from Lowland-Southern collecting sites. F<sub>1</sub> hybrids are rare and backcrosses even rarer. Both the morphological and electrophoretic findings support the recent work of my own and numerous others suggesting that the Rana pipiens complex consists of several species.
引证/输出
预览资料
文章 : 英语