渡り性オオジュリンと非渡り性ホオジロの排泄物中エストラジオール含有量に対する光周期の影響
書誌事項
- タイトル別名
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- Photoperiod Conditions Influence Fecal Estradiol Levels in Females of Migratory Reed Bunting Emberiza schoeniclus and Non-migratory Meadow Bunting Emberiza cioides.
抄録
Fecal estradiol levels in females of the migratory Reed Bunting Emberiza schoeniclus and non-migratory Meadow Bunting Emberiza cioides were measured by radioimmunoassay after extraction with ether. When the photoperiod conditions were changed stepwise from 10hr light/14hr darkness (LD 10:14) to LD 15:9, the fecal estradiol levels in the migratory Reed Bunting increased significantly at LD 12:12 and subsequently decreased at LD 14:10. A similar pattern of change was observed in the non-migratory Meadow Bunting. Fecal estradiol levels appear to reflect the levels circulating in plasma, indicating that estradiol levels circulating in plasma increase at LD 12:12 and subsequently decrease at LD 14:10 not only in the migratory Reed Bunting but also in the non-migratory Meadow Bunting.
収録刊行物
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- 山階鳥類研究所研究報告
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山階鳥類研究所研究報告 34 (1), 1-8, 2002
公益財団法人 山階鳥類研究所
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詳細情報 詳細情報について
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- CRID
- 1390282680015037568
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- NII論文ID
- 130003572916
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- ISSN
- 18833659
- 00440183
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可