Left-sided directional bias of cloacal contacts during house sparrow copulations

被引：7

作者：

Nyland, KB ^{[1
]}

Lombardo, MP ^{[1
]}

Thorpe, PA ^{[1
]}

机构：

[1] Grand Valley State Univ, Dept Biol, Allendale, MI 49401 USA

来源：

WILSON BULLETIN | 2003年 / 115卷 / 04期

关键词：

D O I：

10.1676/03-053

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Most female birds have only a left ovary and associated oviduct. The entry to the oviduct is on the left side of the urodeum of the cloaca. This we predicted a left-sided directional bias of cloacal contacts during House Sparrow (Passer domesticus) copulations. Cloacal contacts from the left outnumbered those from the right 74 to 25 (3:1) during 25 bouts of copulation at 11 House Sparrow nests. While this pattern suggests that a left-sided bias in mounting by males during copulation may be related to the asymmetry of the female reproductive tract, it also might be related to brain lateralization.

引用

页码：470 / 473

页数：4

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