Multiple paternity in Belding's ground squirrel litters.
Multiple paternity in Belding's ground squirrel litters.
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贝尔丁的地松鼠窝中存在多重亲子关系。
DOI：
10.1126/science.7209536
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发表时间：
1981
期刊：
影响因子：
56.9
通讯作者：
P. Sherman
中科院分区：
文献类型：
--
作者：
J. Hanken;P. Sherman
性接受期的贝尔丁地松鼠（啮齿目：松鼠科）雌性通常与数只不同的雄性交配。通过结合对交配的野外观察和实验室的父系排除分析，确定了1977年和1978年出生的27窝幼崽的父系。大多数幼崽（78%）是由多只雄性生育的，通常是两到三只雄性。这可能是在自然种群中直接证明的多父系频率最高的情况。
Sexually receptive female Spermophilus beldingi (Rodentia: Sciuridae) usually mate with several different males. The paternity of 27 litters born in 1977 and 1978 was ascertained by combining field observations of mating with laboratory paternity exclusion analyses. Most of the litters (78 percent) were multiply sired, usually by two or three males. This may be the highest frequency of multiple paternity ever directly demonstrated in a natural population.