著者
佐藤 綾
出版者
THE JAPANESE SOCIETY FOR ANIMAL PSYCHOLOGY
雑誌
動物心理学研究 (ISSN:09168419)
巻号頁・発行日
pp.68.1.9, (Released:2018-06-08)
参考文献数
49

The guppy (Poecilia reticulata), a polyandrous livebearing fish, is a model organism in the study of sexual selection. This species exhibits sexual dimorphism, such as male body coloration (orange, black, or iridescence color spots). Although there is evidence of a preference for colorful males in female mate choice, a wide variation in male color patterns is found even in a population. Recently, there has been an increase in studies examining the postcopulatory processes involved in sperm competition and cryptic female choice in this species. If male traits that favor sperm competition and/or cryptic female choice correspond with traits preferred in female mate choice, then postcopulatory processes will reinforce the selection to colorful males. In contrast, if males with traits preferred by females are not favored by sperm competition and/or cryptic female choice, then postcopulatory processes will weaken the selection to colorful males. In this paper, I review studies of the relationships between male guppy coloration and female mate choice, sperm competition, and cryptic female choice, and discuss the possible factors that maintain the variation in male coloration.

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グッピーにおける性淘汰とオスの体色の多様性 - ja https://t.co/O18I8qOpJx
@PiyoPatter 派手な個体の精子が強いと言う研究結果 https://t.co/5XdtvOIp8S 色が濃いほうが子供を産む力が強いんだって、グッピーは自然にそのことを知ってたんだね。もしかしたら色が薄い方が子孫を残す場… https://t.co/AcOqz87WdJ

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