糞中の性ステロイドホルモン含量の動態からみたアムールトラの卵巣活動と妊娠 Ovarian Activity and Pregnancy in the Siberian Tiger, Panthera tigris altaica, Assessed by Fecal Gonadal Steroid Hormones Analyses

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Abstract

アムールトラ雌2頭と雄1頭から糞を採取し、凍結乾燥後にメタノールでステロイドホルモンを抽出し、EIA法により糞中含量を測定した。雌のエストラジオール-17βと雄のテストステロン値は、年間を通して顕著に変動した。雌2個体のエストラジオール-17βはそれぞれ26.4±8.0と28.0±14.2日間隔で上昇した。しかし、プロジェステロンは単独飼育した雌では変動せず、雄と同居させた雌では交尾後増加し、妊娠した1例で最終交尾から106日後に出産するまで高い値が維持されていた。

Feces were collected from two female and one male Siberian tigers, <i>Panthera tigris altaica</i>. Steroid hormones were extracted from lyophilized feces and quantified by enzyme immunoassay. The fecal contents of estradiol-17β (E<sub>2</sub>) and testosterone in the females and male, respectively, changed markedly throughout the year. The fecal E<sub>2</sub> contents of females Nos. 179 and 238 increased at 26.4 ± 8.0 and 28.0 ± 14.2 day intervals, respectively. However, the fecal contents of progesterone (P<sub>4</sub>) in the female kept alone did not change. In contrast, the other female, which was kept with a male, had increased fecal P<sub>4</sub> contents after copulation. The fecal progesterone levels of the pregnant female remained high during her 106-day pregnancy.<br>

Journal

  • Journal of Veterinary Medical Science

    Journal of Veterinary Medical Science 69(5), 569-571, 2007-05-25

    Japanese Society of Veterinary Science

References:  9

Codes

  • NII Article ID (NAID)
    110006273263
  • NII NACSIS-CAT ID (NCID)
    AA10796138
  • Text Lang
    ENG
  • Article Type
    NOT
  • ISSN
    09167250
  • NDL Article ID
    8829383
  • NDL Source Classification
    ZR22(科学技術--農林水産--畜産)
  • NDL Call No.
    Z18-350
  • Data Source
    CJP  NDL  NII-ELS  IR  J-STAGE 
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