https://scholars.lib.ntu.edu.tw/handle/123456789/624967
標題: | Injury feigning in the Savanna Nightjar: a test of the vulnerability and brood value hypotheses | 作者: | SHU-PING TSENG Lin Y.-Y Yang Y.-C Wang Y Lin W.-L. |
關鍵字: | Brood value hypothesis; Caprimulgus affinis; Injury feigning; Vulnerability hypothesis | 公開日期: | 2017 | 卷: | 158 | 期: | 2 | 起(迄)頁: | 507-516 | 來源出版物: | Journal of Ornithology | 摘要: | Nest predation is a major threat to the survival of young birds and is thus a crucial selective pressure influencing the evolution of life history traits. Injury feigning is a nest-defense mechanism in which the parents attract the attention of predators to secure their offspring. Because parents may incur a cost from injury feigning, they should adjust their injury-feigning behavior to different situations to maximize fitness. In this study, we used the Savanna Nightjar, Caprimulgus affinis, as a model organism to test the vulnerability and brood value hypotheses for predicting the occurrence of injury-feigning behavior. A field study was performed between 2006 and 2012, and observations were recorded from 123 nests. Both nestling movement and injury feigning increased after hatching, reached their peak at a nestling age of 8–10 days, and then declined afterward. In addition, the frequency of injury feigning by the female differed between habitats, being higher in a low-plant-cover habitat than in a high-plant-cover habitat. Both findings are consistent with the vulnerability hypothesis. By contrast, the intensity of injury-feigning behavior did not linearly increase with nestling age and brood size; thus, the brood value hypothesis was not supported. © 2016, Dt. Ornithologen-Gesellschaft e.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015785790&doi=10.1007%2fs10336-016-1400-0&partnerID=40&md5=c4df9b33105549eb1f95ffb3413c4eb3 https://scholars.lib.ntu.edu.tw/handle/123456789/624967 |
ISSN: | 00218375 | DOI: | 10.1007/s10336-016-1400-0 | SDG/關鍵字: | bird; hatching; injury; life history trait; nestling; vulnerability; Aves; Caprimulgus affinis |
顯示於: | 昆蟲學系 |
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