REPRODUCTIVE SUCCESS OF SHORT-TAILED SHEARWATERS PUFFINUS-TENUIROSTRIS IN RELATION TO THEIR AGE AND BREEDING EXPERIENCE

被引:156
作者
WOOLLER, RD
BRADLEY, JS
SKIRA, IJ
SERVENTY, DL
机构
[1] CSIRO, DIV WILDLIFE & ECOL, MIDLAND, WA 6056, AUSTRALIA
[2] DEPT LANDS PK & WILDLIFE, HOBART, TAS 7001, AUSTRALIA
关键词
D O I
10.2307/5165
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The proportion of eggs that produced free-flying young increased with increasing breeding experience from an initial 0.4-0.45 to a maximum of 0.75-0.8, before falling to 0.55-0.65 in the most experienced birds. Overall, 10-11% of breeding shearwaters were absent, and 15-18% were present but not recorded with an egg, in any year. Both absentee and non-laying rates declined with increasing age. Older 1st-breeding birds had a higher initial reproductive success than those starting younger. Thereafter, there were no consistent differences in reproductive rates related to age of 1st breeding. Individuals that lived for longer had a higher reproductive success, on average, than shorter-lived birds, especially early in their reproductive careers. -from Authors
引用
收藏
页码:161 / 170
页数:10
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