ニホンアナグマオスが交尾後、交尾痕を隠すタイムラプス映像
(13.8MB, 00:00:23)撮影日：2015/04/16
撮影場所：日本長野県茅野市
田中 浩
(Hiroshi Tanaka)
2024/04/16登録
種類：ニホンアナグマ,
Meles anakuma
キーワード：隠す行動 交尾痕
動物界 >脊索動物門 >哺乳綱 >食肉目 >イタチ科 >アナグマ属 >
オスアナグマは13：18から15：06までメスアナグマと交尾を行い、交尾により地面が踏み固められた。オスは15：07交尾を終えた。その時、交尾場所の地面はむき出しだった。オスは15：12までに交尾の証拠である裸地を落ち葉と土で完全に覆った。
Below is the abstract from the article containing this video:
We describe the details of the mating behavior of the Japanese badger, Meles anakuma, using camera trapping. Similar to other mustelid species, the females copulated with multiple males (mean = 3.0). Repeated mounting with the same male was observed, occurring 3.4 times on average. The average duration of the mounting bout was approximately 70 min, which was much longer than that observed for the congener M. meles. Following the initial mounting bout, males constructed a rest site by gathering fallen leaves and branches close to the female sett. Males rested at these sites between mounting bouts, likely to guard their mates from rival males. The mating pairs displayed a preference for returning to the same location for copulatory activities, which resulted in the dispersal of fallen leaves and surface soil disturbance. We found that some males restored the copulation site by covering it with leaves, soil, and branches after all mating behaviors were completed. This action prevented rival males from locating females, especially if they relied on olfactory cues from the copulation sites. Our study reveals interspecific differences in mating behavior within Meles and the relationship between social systems and mating behavior. Digital video images related to this article are available at http://www.momo-p.com/showdetail-e.php?movie id=momo240213ma01a, http://www.momo-p.com/showdetail-e.php?movieid=momo240213ma02a, http://www.momo-p. com/showdetail-e.php?movieid=momo240213ma04a, http://www.momo-p.com/showdetail-e.php?movieid=momo240213 ma05a, and http://www.momo-p.com/showdetail-e.php?movieid=momo240213ma06a.
Hiroshi Tanaka, Yukihiro Fukuda, Etsuko Yuki, and Wataru Kojima (2024). Mating behavior in the Japanese badger Meles anakuma. J. Ethol. 10.1007/s10164-024-00810-y
