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

DOI

書誌事項

タイトル別名
  • 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

詳細情報 詳細情報について

  • CRID
    1390282680015037568
  • NII論文ID
    130003572916
  • DOI
    10.3312/jyio1952.34.1
  • ISSN
    18833659
    00440183
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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