Offspring of Sex-reversed Males in Bufo viridis LAUR
Scientific report of the Laboratory for Amphibian Biology Volume 10
Page 155-164
published_at 1990-03
アクセス数 : 1162 件
ダウンロード数 : 151 件
今月のアクセス数 : 8 件
今月のダウンロード数 : 7 件
この文献の参照には次のURLをご利用ください : https://doi.org/10.15027/295
File |
KJ00000016951.pdf
963 KB
種類 :
fulltext
|
Title ( eng ) |
Offspring of Sex-reversed Males in Bufo viridis LAUR
|
Creator |
Ueda Hiroaki
|
Contributors | 国立情報学研究所 |
Source Title |
Scientific report of the Laboratory for Amphibian Biology
|
Volume | 10 |
Start Page | 155 |
End Page | 164 |
Abstract |
In order to determine the sex-determining mechanism in Bufo viridis, males were sex-reversed into females by castration and subsequent administration with estrogen, and mated with normal males to obtain the offspring. Of the 25 castrated and estrogen-injected males, 17 lived for more than 15 months. While seven of these toads had regenerated testes and normal BIDDER'S organs, the other ten had well-developed ovaries transformed from their BIDDER'S organs, although the oviducts were defective in five of them. By pituitary injection, four of the remaining five sex-reversed males laid 473,62,5368 and 7316 eggs. By insemination with sperm of regenerated testes, 822 eggs attained completion of metamorphosis. Among 784 offspring, there were 197 females and 587 (74.9%) males. These numbers seem to show that the male in Bufo viridis is heterogametic (XY) and YY toads produced from matings between sexreversed genetic males (XY) and normal males (XY) can survive and become males.
|
NDC |
Zoology [ 480 ]
|
Language |
eng
|
Resource Type | departmental bulletin paper |
Publisher |
Institute for Amphibian Biology, Hiroshima University
|
Date of Issued | 1990-03 |
Publish Type | Version of Record |
Access Rights | open access |
Date |
[Created] 2006-03-21
|
Source Identifier |
[ISSN] 0386-3166
[NCID] AA00837669
|