Kin recognition by calls and inbreeding avoidance in an isolated avian population on oceanic island.
| Project/Area Number |
21570022
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Osaka City University |
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Principal Investigator |
TAKAGI Masaoki 大阪市立大学, 理学研究科, 准教授 (70311917)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | ダイトウコノハズク / リュウキュウコノハズク / 出生地分散 / 繁殖分散 / 血縁認識 / 近交弱勢 / 近親交配 / 鳴き声 / 隔離個体群 / 音声コミュニケーション / 海洋島 / フクロウ類 |
|---|
| Research Abstract |
Fledgling male Daito Scops Owls settled in vacant sites near each nest as soon as possible they can after fledging, and fledgling females leisurely settled far away from than their nests. Genetic analyses uncovered that pair formation occurred between unrelated individuals, and extra-pair fertilizations occurred in the population. Heterozygosities in owlets by extra-pair fertilization were higher than by pair fertilization. Females chose genetically dissimilar males as their social mates, and in addition married females accepted copulation with genetically more dissimilar males. It was also suggested that males could recognize the differences in hoot calls. The similarity of hoots between a social father and his son, and the dissimilarity of hoots between a social father of females and the married male are verifying by pedigree analyses of hoots.
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Report
(4 results)
Research Products
(33 results)
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[Journal Article]2010
Author(s)
高木昌興・松井晋
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Journal Title
分担執筆 第4章 鳥類「南大東島の鳥類の特徴と保全」『南大東の人と自然』(中井精一・東和明・ダニエル ロング(編著)(南方新社)
Pages: 168-175
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