CONTRIBUTIONS TO FLEDGLING FEEDING IN THE FLORIDA SCRUB JAY

被引：43

作者：

MCGOWAN, KJ ^{[1
]}

WOOLFENDEN, GE ^{[1
]}

机构：

[1] UNIV S FLORIDA, DEPT BIOL, TAMPA, FL 33620 USA

来源：

JOURNAL OF ANIMAL ECOLOGY | 1990年 / 59卷 / 02期

关键词：

D O I：

10.2307/4889

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

At the Archbold Biological Station, Florida, feeding of Aphelocoma coerulescens fledglings by adult jays extended from fledging at c18 days of age to nutritional independence at c85 days of age. Fledglings were fed for a longer period of time and at a greater rate than were nestlings, indicating greater investment by all group members in this portion of the breeding cycle. Retention of young within the group may be responsible for the extended parental care. No differences were found in contributions by the various status classes of adult jays. All Florida scrub jay group members fed all fledglings in their group; no brood division was found. Food received by each fledgling increased with increasing numbers of helpers. Neither male breeders nor female breeders decreased contributions when helpers were present. Helper enhancement of survival of fledglings and breeders may be related to predator detection and not to extra food provided. -from Authors

引用

页码：691 / 707

页数：17

共 77 条

[51] BROOD DIVISION IN DARWIN GROUND FINCHES [J].