SEX-RATIO VARIATION IN THE YUMA BAT (MYOTIS-YUMANENSIS)

被引：7

作者：

MILLIGAN, BN ^{[1
]}

BRIGHAM, RM ^{[1
]}

机构：

[1] UNIV REGINA, DEPT BIOL, REGINA S4S 0A2, SASKATCHEWAN, CANADA

来源：

CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE | 1993年 / 71卷 / 05期

关键词：

D O I：

10.1139/z93-122

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Sex allocation theory predicts that monomorphic species should produce natal sex ratios near unity. We measured natal sex ratios in a maternity colony of approximately 1600 yuma bats (Myotis yumanensis) near Squilax, British Columbia, during June and July 1991. Overall, the natal sex ratio did not differ from unity but the sex ratio did vary significantly throughout the summer. Variation appears to be related to an interaction between maternal age and date of birth. This evidence suggests that facultative manipulation of the sex of the offspring by individual females may occur within the population.

引用

页码：937 / 940

页数：4

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