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首页> 外文期刊>Canadian Journal of Zoology >Does low fecundity reflect kin recognition and inbreeding avoidance in the mandarin vole (Microtus mandarinus)?
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Does low fecundity reflect kin recognition and inbreeding avoidance in the mandarin vole (Microtus mandarinus)?

机译：繁殖力低是否反映了田鼠（田鼠（Microtus mandarinus））的亲属识别和近亲回避？

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摘要

The effects of kin recognition on estrus and breeding in mandarin voles (Microtus mandarinus) were investigated in the laboratory using a cross-fostering method. Nonsiblings reared apart produced significantly more litters than siblings or nonsiblings reared together. These results may support the hypothesis that familiarity through association before weaning plays an important role in kin recognition. On the other hand, nonsiblings reared apart produced significantly more litters than siblings reared apart. Furthermore, there was no significant difference in number of litters between siblings reared apart and siblings reared together. These observations show that phenotype-matching mechanisms of kin recognition may operate in conjunction with familiarity in kin recognition in this species. Through observing the vaginal cytology of female mandarin voles paired with different males in different rearing conditions, it was found that females paired with familiar males (through association before weaning) produced significantly fewer estrous smears than females paired with unfamiliar males (reared by different parents before weaning), regardless of genetic relatedness. Thus, using vaginal cytology as an indicator of estrus, it was found that familiarity through association before weaning may retard the first estrus of female mandarin voles.
机译：亲属识别对普通田鼠（田鼠（Microtus mandarinus））的发情和繁殖的影响在实验室中采用交叉育种方法进行了研究。分开饲养的非兄弟姐妹比一起饲养的兄弟姐妹或非兄弟姐妹产生更多的垃圾。这些结果可能支持这样的假设，即断奶前通过关联进行的熟悉在亲属识别中起重要作用。另一方面，与兄弟姐妹分开饲养相比，分开饲养的非兄弟姐妹产仔数要多得多。此外，分开饲养的兄弟姐妹和一起饲养的兄弟姐妹的窝数没有显着差异。这些观察结果表明，亲属识别的表型匹配机制可能与该物种对亲属识别的熟悉程度共同起作用。通过观察在不同饲养条件下与不同雄性配对的雌性普通田鼠的阴道细胞学检查，发现与不熟悉雄性配对的雌性配对（通过断奶前的配对）相比，与不熟悉雄性配对的雌性配对（由以前的父母亲繁殖）的发情涂片明显更少断奶），而不考虑遗传相关性。因此，使用阴道细胞学作为发情的指标，发现在断奶前通过联想来熟悉可能会延迟雌性普通田鼠的第一发情。

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