SEXUAL-BEHAVIOR IN PARTHENOGENETIC LIZARDS (CNEMIDOPHORUS)
SEXUAL-BEHAVIOR IN PARTHENOGENETIC LIZARDS (CNEMIDOPHORUS)
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DOI：
10.1073/pnas.77.1.499
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发表时间：
1980-01-01
期刊：
影响因子：
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通讯作者：
FITZGERALD, KT
中科院分区：
文献类型：
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作者：
CREWS, D;FITZGERALD, KT
全雌性、孤雌生殖的物种为有关性的本质和进化的假设提供了一个独特的测试。关于孤雌生殖行为的基本数据缺乏。通过对圈养的单花瓢虫、黄瓢虫和小瓢虫的观察，发现它们的行为模式与有性亲缘关系密切的瓢虫的求偶和交配行为非常相似。在分开饲养的两组中，研究人员反复看到一只蜥蜴骑上它的笼子同伴，并靠近泄殖腔区域。解剖或触诊显示，在每种情况下，求偶动物都具有生殖活性，卵巢中含有较大的排卵期前卵泡，而求偶动物要么具有生殖活性，要么具有排卵期后的卵泡，卵巢中仅含有较小的未发育卵泡。
All-female, parthenogenetic species afford a unique test of hypotheses regarding the nature and evolution of sexuality. Basic data on the behavior of parthenogens are lacking. From observations of captive C. uniparens, C. velox and C. tesselatus, behavior patterns remarkably similar to the courtship and copulatory behavior of closely related sexual species were discovered. In separately housed pairs, one lizard was repeatedly seen to mount and ride its cagemate and appose the cloacal regions. Dissection or palpation revealed that in each instance the courted animal was reproductively active, having ovaries containing large, preovulatory follicles, while the courting animal was either reproductively inactive or postovulatory, having ovaries containing only small, undeveloped follicles.