ADAPTIVE SEASONAL-VARIATION IN THE SEX-RATIO OF KESTREL BROODS

被引：224

作者：

DIJKSTRA, C ^{[1
]}

DAAN, S ^{[1
]}

BUKER, JB ^{[1
]}

机构：

[1] STATE UNIV GRONINGEN,ZOOL LAB,POB 14,9750 AA HAREN,NETHERLANDS

来源：

FUNCTIONAL ECOLOGY | 1990年 / 4卷 / 02期

关键词：

D O I：

10.2307/2389333

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The sex ratio (% males) in broods of Falco tinnunculus declined with progressive date of birth. This decline enhanced reproductive prospects of the broods since the probability of breeding as yearling declined with birth date for male offspring, but not for females. The sex ratio bias of the brood was produced by non-random sex segregation at meiosis: by altering the within-clutch sequence of sexes (first male then female eggs in early clutches, the reverse in late clutches) laying kestrels assigned the sex with the better long-term reproductive prospects to the initial eggs of their clutch, which suffer least mortality in the nest. -from Authors

引用

页码：143 / 147

页数：5