韩国草原鼠蛇（Elaphe dione）的交配系统和行为

Pub Date : 2024-02-29 DOI:10.30906/1026-2296-2024-31-1-56-59

Min Seock Do, Jin Hwan Choi, Hee-Tae Lee, Sang-Cheol Lee

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引用次数: 0

摘要

交配系统会影响动物的交配行为、工作性别比（OSR）和亲子遗传信息。众所周知，蛇目中的许多物种都接受多配偶制。从 2020 年 4 月 1 日至 9 月 30 日，我们对草原鼠蛇的交配行为进行了三次观察。在所有情况下，参与交配的性别比例都是一只雌蛇和两只或两只以上雄蛇。此外，有两次还观察到两只雄蛇同时将半生殖器插入一只雌蛇的泄殖腔，这是一个独特的发现。结论是草原鼠蛇极有可能采用多雄性交配这种蛇类常见的交配方式。通过对草原鼠蛇进行行为遗传研究，将有可能了解草原鼠蛇的确切交配系统。

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Mating System and Behavior of Steppe Rat Snake (Elaphe dione) in South Korea

The mating system affects the animal’s mating behavior, operational sex ratio (OSR), and the genetic information of paternity. It is generally known that many species in the order Serpent accept polyandry. We observed the mating behavior of steppe rat snakes three times from April 1 until September 30, 2020. In all cases, the sex ratio participating in mating was one female and two or more males. Moreover, in two cases, two males were observed to insert their hemipenes into one female’s cloaca at the same time, which was a unique finding. It was concluded that steppe rat snakes would be highly likely to adopt polyandry, a common mating system of snakes. It will be possible to understand the exact mating system of steppe rat snakes by conducting behavioral genetic studies on them.

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