Usefulness of female estrus detection by behavior and calls of male cheetah (A<i>cinonyx jubatus</i>)

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  • 雄チーター<i>Acinonyx jubatus</i>の行動及び鳴き声による雌の発情検知の有用性の検討
  • 雄チーターAcinonyx jubatusの行動及び鳴き声による雌の発情検知の有用性の検討
  • オス チーター Acinonyx jubatus ノ コウドウ オヨビ ナキゴエ ニ ヨル メス ノ ハツジョウ ケンチ ノ ユウヨウセイ ノ ケントウ

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Abstract

<p>Captive breeding is extremely important for the successful conservation of cheetahs.; However, it is, difficult to predict the estrus period in captive cheetahs, the estrus cycle may be influenced by captive conditions, or social relations among captive individuals. Elucidation of cheetah’s breeding physiology is important for the successful breeding of this species in captivity. The aim of this study was to determine the usefulness of identifying male behavior and calls that signify female estrus. The behavioral activities, call characteristics, and fecal estradiol-17β-content of nine captive cheetahs were observed.</p><p>Our results indicated that there was a significant correlation with only females who were not involved in reproduction during the observation period, and that it was difficult to detect female estrus using male behavior. On the contrary, “chirr,” the male courtship call, was observed in individuals who recognized the capability to mate. As estrus intensified, this vocalization became remarkably more frequent than the “meow,” the call used to communicate with other individuals. These results suggest that the increase in chirr is useful for detecting female estrus and determining whether males recognize female mating capability. However, females, even in estrus, were not always tolerant of the males wanting to mate.</p>

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