Effect of reproductive success on breeding site fidelity of Blue-tailed Bee-eaters on Kinmen Island, Taiwan
Date Issued
2007
Date
2007
Author(s)
Tsai, Pei-Yu
DOI
zh-TW
Abstract
Most Blue-tailed bee-eaters (Merops philipinnus) are colonial breeders. They excavated nest burrows on sandy banks or cliffs. I monitored a migratory bee-eater breeding population on Kinmen Island, from 2003-2006. I found that certain bee-eaters bred at the same colony in consecutive years, and thus show site fidelity. In other bird species, variation in site fidelity has been explained by past reproductive success (RS). Because RS is the result of a combination of physical environment and biological factors, RS can be used as the cue for assessing the quality of breeding habitat. For colonial species, RS can be further divided into individual reproductive success (IRS, the relative reproductive success of the individual) and local reproductive success (LRS, the relative reproductive success of the colony). I investigated whether previous IRS or LRS affected the likelihood that individual bee-eaters would return in future years to breed at the same colony. Using backward stepwise Logistic regression, I found that IRS significantly influenced site fidelity while LRS did not. Moreover, IRS ad LRS in second year was significantly correlative with prior year. Since bee-eaters are burrow nesters, unlike other opening-nested colonial breeding birds, LRS might be more difficult to gather the public information; therefore, it may lead to the lack of significant influence of LRS.
Subjects
栗喉蜂虎
金門
生殖群
棲地忠實性
生殖成功
Blue-tailed bee-eater
Kinmen
breeding colony
site fidelity
reproductive success
Type
other
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