Gender identification by calls and body size of the Streaked Shearwater examined by CHD genes
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- Arima Hiroshi
- Faculty of Medicine, Kyoto University
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- Oka Nariko
- The Yamashina Institute for Ornithology
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- Baba Yoshiyuki
- Kyushu University
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- Sugawa Hisashi
- Fukakusa Campus, Ryukoku University
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- Ota Takahiro
- Faculty of Agriculture, Kyoto University
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抄録
Like most seabirds Streaked Shearwaters Calonectris leucomelas have sexually monomorphic plumage. Researchers have conveniently identified gender in the field by means of two types of calls, associated with dimorphism in body size. By molecular sexing analysis using the chromo-helicase-DNA-binding (CHD) genes, we determined the gender of Streaked Shearwaters in relation to call types and body size. We recorded the type of calls, measured body dimensions and collected non-invasive samples (buccal cells or feathers) of Streaked Shearwaters at two breeding islands. As obvious amplification to identify gender by polymerase chain reaction (PCR) could not be obtained at high rates using a known universal primer pair, we developed two new primer pairs to identify gender in this species; this enabled us to identify the gender of all of the samples. Without exception all males gave high-pitched calls, whereas all females gave low-pitched calls. Molecular evidence also confirmed morphometric differences between males and females. We, therefore, conclude that Streaked Shearwaters exhibit sexual dimorphism in body size and call type. Males are significantly larger than females, and males give high calls whereas females give low calls.
収録刊行物
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- ORNITHOLOGICAL SCIENCE
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ORNITHOLOGICAL SCIENCE 13 (1), 9-17, 2014
日本鳥学会
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詳細情報 詳細情報について
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- CRID
- 1390001205190636544
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- NII論文ID
- 130004934967
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- NII書誌ID
- AA11616388
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- DOI
- 10.2326/osj.13.9
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- HANDLE
- 2433/199662
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- ISSN
- 13470558
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可