操作性比的改变对峨眉树蛙雄性竞争的影响

来源 :第九届全国野生动物生态与资源保护学术研讨会 | 被引量 : 0次 | 上传用户:yhljlb
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  操作性比被认为是影响性选择强度的重要因素之一。两栖类繁殖过程中,由异步到达造成的偏向雄性的操作性比经常发生,导致了两栖类中可能出现激烈的雄-雄竞争。
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本研究选取黑龙江省通河地区的东北林蛙为研究对象,通过逐步降低其环境温度的处理,设25℃组为对照组,4℃组、0℃组、-1℃组和-2℃组为低温处理组,采用葡萄糖氧化酶-过氧化物酶法、蒽酮比色定糖法、2-Dnative-PAGE/SDS-PAGE 同工酶电泳法。
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Geographic variation in offspring size and other phenotypes can be viewed as an adaptive response to local environmental conditions,but the causes of such variation remain unclear.
Sexual selection favoring large males could be balanced by fecundity selection favoring large females,leading to the evolution of sexual size monomorphism.
Sexual selection is critical to both reproduction and evolution.The effects of male-male competition and female choice regarding body size have been examined in a large number of taxa,including toad s
Females are routinely choosier than males in mate choice in many taxa.Several hypotheses were considered to explain genetic benefits behind female strategies.The inbreeding avoidance hypothesis and ou