The role of the anal fin in fertilization success in male medaka, Oryzias latipes
The role of the anal fin in fertilization success in male medaka, Oryzias latipes
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臀鳍在雄性青鳉 Oryzias latipes 受精成功中的作用
DOI：
10.1046/j.1444-2906.2000.00103.x
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发表时间：
2000
影响因子：
1.9
通讯作者：
K. Maekawa
中科院分区：
文献类型：
--
作者：
Y. Koseki;K. Takata;K. Maekawa
总结：
青鳉的臀鳍是两性异形的，成熟的雄性比雌性有更大的臀鳍。为了解雄性臀鳍在交配过程中的功能，进行了切除臀鳍的实验。雄性与雌性在连续的治疗中交配，其中不同部分的臀鳍被删除。男性青鳉与一半的臀鳍删除受精卵的比例显着低于男性与正常的臀鳍。结果表明，雄性青鳉的臀鳍对于有效受精是重要的，这表明选择较大的臀鳍。
SUMMARY:
The anal fin of the medaka Oryzias latipes is sexually dimorphic, with mature males developing a larger anal fin than females. To determine the functions of the male anal fin during mating, an anal fin-removal experiment was conducted. Males were mated with females in successive treatments in which different portions of the anal fin were removed. Male medaka with half of their anal fin removed fertilized a significantly lower proportion of eggs than did males with a normal anal fin. The results show that the anal fin in male medaka is important for efficient fertilization, suggesting selection for a larger anal fin.