Sex Determining Mechanism in Buergeria buergeri (SCHLEGEL) : II. The Effects of Sex Hormones on the Differentiation of Gonads and the Offspring of Sex-reversed Females
Scientific report of the Laboratory for Amphibian Biology 9 巻
213-238 頁
1987-12 発行
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この文献の参照には次のURLをご利用ください : https://doi.org/10.15027/373
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タイトル ( eng ) |
Sex Determining Mechanism in Buergeria buergeri (SCHLEGEL) : II. The Effects of Sex Hormones on the Differentiation of Gonads and the Offspring of Sex-reversed Females
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作成者 | |
寄与者 | 国立情報学研究所 |
収録物名 |
Scientific report of the Laboratory for Amphibian Biology
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巻 | 9 |
開始ページ | 213 |
終了ページ | 238 |
抄録 |
The mechanism of sex determination in Buergeria buergeri (SCHLEGEL) was studied by making use of sex-reversed females. There was nearly an equal number of one-nucleolate and two-nucleolate tadpoles in those produced from two pairs of males and females just as in the tadpoles collected from the field. The one-nucleolate and two-nucleolate tadpoles collected from the field as well as those raised in the laboratory were administered estrogen or androgen in order to obtain sex-reversed frogs. Masculinization occurred in a greater or less degree in many of one-nucleolate females administered estrogen or androgen at the tadpole stage. Seven of them administered estrogen or androgen attained sexual maturity. Offspring were obtained from two mature sex-reversed genetic females administered estrogen. Feminization also occurred to a certain degree in many of the juvenile two-nucleolate males administered estrogen at the tadpole stage. Of the 1067 offspring obtained from the two mature sex-reversed genetic females (1-nu) mated with three normal females (1-nu), 243 (22.8%) had no nucleolus, 525 (49.2%) had one nucleolus, and 299 (28.0%) had two nucleoli, when examined at the neurula, tail-bud and tadpole stages. While all the anucleolate individuals did not live beyond the tail-bud stage, the one- and two-nucleolate individuals mostly survived normally and became females and males, respectively. It was confirmed that the sex chromosomes are of the ZZ/ZW-type in Buergeria buergeri and that the nucleolar organizer is situated in the Z chromosome and inherited as a Mendelian character.
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NDC分類 |
動物学 [ 480 ]
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言語 |
英語
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資源タイプ | 紀要論文 |
出版者 |
Institute for Amphibian Biology, Hiroshima University
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発行日 | 1987-12 |
出版タイプ | Version of Record(出版社版。早期公開を含む) |
アクセス権 | オープンアクセス |
日付 |
[作成日] 2006-03-21
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収録物識別子 |
[ISSN] 0386-3166
[NCID] AA00837669
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