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Cooperative Breeding Helps Brown-Headed Nuthatches (Sitta pusilla) Face Heterospecific Competition
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Cooperative Breeding Helps Brown-Headed Nuthatches (Sitta pusilla) Face Heterospecific Competition. |
| 개인저자 | Niemasik, Esther Leah. |
| 단체저자명 | Cornell University. Neurobiology and Behavior. |
| 발행사항 | [S.l.]: Cornell University., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 144 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-04B. Dissertation Abstract International |
| ISBN | 9781088378526 |
| 학위논문주기 | Thesis (Ph.D.)--Cornell University, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Advisor: Dickinson, Janis L. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | My dissertation research tests the previously untested idea that heterospecific competition functions as an important selective force on group size in cooperatively breeding birds, using experimental approaches with the Brown-headed nuthatch (BHNU) (Sitta pusilla). We know from prior work that the western bluebird, which is much larger, excludes nuthatches from nesting sites (Stanback 2011). I tested the following explicit hypotheses: Hypothesis 1: Inter-specific competition selects for increased group size (more individuals helping or co-breeding) in BHNU and may even be sufficient to select for helping. Hypothesis 2: BHNU groups collectively defend against nest competitors, and collectively monitor their nest sites to chase away intruders.I studied the effect of interspecific competition on the fitness consequences of cooperative breeding using an experimental design that involved creating high and low competition sites on golf courses. Half of each course was randomly assigned to the high and low heterospecific competition treatments |
| 일반주제명 | Behavioral sciences. Ecology. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
