%0 Journal Article
%T Position in the evolution of reproductive endocrine of amphioxus, Branchiostoma belcheri<br>
%A Yongqiang Fang
%A <br>
%J 科学通报(英文版)
%D 1998
%I 
%X This review summarizes the recent discoveries of many authors who found that in amphioxus Hatschek’s pit is capable of synthesizing vertebrate gonadotropin-like substance, and that the content of gonadotropin-releasing hormone in the amphioxus’ body shows a positive correlation with the reproductive cycle, and that the sex steroid hormone exists in gonads. Exogenous hormones could promote gonadal development, maturation and reproductive activity in amphioxus. A possible implication might be that the reproductive activity in amphioxus is regulated by reproductive hormones like vertebrate, indicating the existence of primitive reproductive endocrine regulatory axis, brain vesicle-Hatschek’s pit-gonads axis, as compared with regulatory axis of vertebrate. It will provide a new line for establishing the position of reproductive endocrine evolution in lancelet.
%K amphioxus (lancelet)
%K Hatschek’
%K s pit
%K reproductive endocrine
%K evolution
%K gonadotropin-releasing hormone
%K gonadotropin
%K sex steriod hormone<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=0D7F7801DB7B1EB62B30E7FE27FB37E7&yid=8CAA3A429E3EA654&vid=BE33CC7147FEFCA4&iid=38B194292C032A66&sid=6425DAE0271BB751&eid=6425DAE0271BB751&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=63