A new pair of primers for molecular sexing of the Pallas squirrel, Callosciurus erythraeus, and variation in fetal sex ratio

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The Pallas squirrel, <i>Callosciurus erythraeus</i>, is an introduced species to Japan where a male-biased sex ratio has been reported at the weaning stage in the field. For further examination of their earlier (fetal) sex ratio, a new PCR primer set was designed to amplify a portion of the <i>Sry </i>(sex-determining region Y) gene. This successfully produced sex-specific PCR profiles for known-sex adult samples. Using this technique we could determine the sex of fetal samples dissected out of mothers shot as pests on Izu-Oshima Island, Tokyo, Japan. The fetal sex ratio was significantly male-biased in 2000, but not in other years. The sex ratio tending towards male-bias in this squirrel is discussed from a local resource competition theory.<br>

収録刊行物

  • Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan  

    Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan 31(2), 87-92, 2006-12-01 

    日本哺乳類学会

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各種コード

  • NII論文ID(NAID)
    10018468184
  • NII書誌ID(NCID)
    AA11185060
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13434152
  • NDL 記事登録ID
    8586830
  • NDL 雑誌分類
    ZR4(科学技術--生物学--動物)
  • NDL 請求記号
    Z54-G149
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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