THE ECOLOGY AND ENERGETICS OF CHICK PROVISIONING BY BLACK GUILLEMOTS
THE ECOLOGY AND ENERGETICS OF CHICK PROVISIONING BY BLACK GUILLEMOTS
复制标题
DOI：
10.2307/1368652
复制
发表时间：
1987-08-01
期刊：
影响因子：
3.1
通讯作者：
CAIRNS, DK
中科院分区：
文献类型：
--
作者：
CAIRNS, DK
研究了加拿大哈德逊湾的海鸠（Cepphus grylle）雏鸟的生长和父母的供给行为。小鸡收到底栖blennies，主要是Stichaeus punctatus和Eumesogrammus praecisus，父母在不到40米深的水接近殖民地。鸡饲料更频繁，在上午，但喂养率并不随年龄的年轻。在雏鸟期的猎物项目的大小增加，能量摄入量达到峰值约780千焦/天/小鸡时，小鸡是25日龄。黑海鸠可以保持较高的繁殖率比离岸喂养Alkaliae，因为他们的觅食范围短，时间和空间的可预测性，他们的底栖猎物允许更高的小鸡供应率。
I studied chick growth and parental provisioning behavior of Black Guillemots (Cepphus grylle) in Hudson Bay, Canada. Chicks received benthic blennies, principally Stichaeus punctatus and Eumesogrammus praecisus, which parents caught in water less than 40 m deep close to the colony. Chick feeds were more frequent in the morning but feeding rates did not vary with age of young. Size of prey items increased during the nestling period, and energy intake peaked at about 780 kJ/day/chick when chicks were 25 days of age. Black Guillemots can maintain higher reproductive rates than offshore-feeding Alcidae because their short foraging range and the temporal and spatial predictability of their benthic prey permit higher rates of chick provisioning.