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High Temperature Tolerances of Bufo Hemiophrys and Bufo Cognatus
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High Temperature Tolerances of Bufo Hemiophrys and Bufo Cognatus

著者: William D Schmid
版本/格式: 文章 文章 : 英语
刊登在:Ecology, Jul., 1965, vol. 46, no. 4, p. 559-560
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: William D Schmid
ISSN:0012-9658
OCLC号码: 480021201
语言注释: English
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摘要:

Temperature tolerances of Bufo hemiophrys and B. cognatus were examined by exposing specimens to lethal high temperatures. Bufo cognatus was able to tolerate significantly higher temperatures than B. hemiophrys. The results yielded an estimated interspecific difference in upper lethal temperature of 2.34 degree plus or minus 0.41 degree. This different was correlated with the geographic distributions of the two species; i.e., the more southern species, B. cognatus, was able to tolerate higher temperatures. This has been taken to indicate that a physiological specialization has taken place which is adaptive for the two species in the microclimates of their respective habitats.

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