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详细书目
| 文件类型: | 文章 |
|---|---|
| 所有的著者/提供者: | John A Moore |
| ISSN: | 0014-3820 |
| OCLC号码: | 478513415 |
| 语言注释: | English |
| 奖励: |
摘要:
Previous experiments have revealed that northern and southern species of amphibians differ in a number of characters such as embryonic temperature tolerance, rate of development, temperature coefficient, egg size, and form of egg mass. In the experiments reported in this paper the geographic variations of the above listed characters are described for a single species, Rana pipiens. The northern populations of this species are found to differ from southern populations in the same way that northern species differ from southern species. The formation of intraspecific temperature races in Rana pipiens is correlated with an unusually great range of geographic distribution.
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添加标签 目的是为 "Geographic Variation of Adaptive Characters in Rana pipiens Schreber".
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