Position in the evolution of reproductive endocrine of amphioxus, Branchiostoma belcheri  

作　　者：FANG Yongqiang Third Institute of Oceanography, SOA, Xiamen 361005, China 

出　　处：《Chinese Science Bulletin》1998年第3期177-185,共9页

摘　　要：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.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.

关 键 词：AMPHIOXUS (lancelet) Hatschek’s pit reproductive ENDOCRINE EVOLUTION gonadotropin_releasing HORMONE GONADOTROPIN sex steriod hormone. 

分 类 号：Q959.4[生物学—动物学]