Seasonal Gametogenesis of Host Sea Anemone(Entacmaea quadricolor) Inhabiting Hong Kong Waters  

作　　者：BI Ying ZHANG Bin ZHANG Zhifeng QIU Jianwen 

机构地区：[1]Key Laboratory of Marine Genetics and Breeding of Ministry of Education, Ocean University of China [2]Department of Biology, Hong Kong Baptist University

出　　处：《Journal of Ocean University of China》2015年第1期143-148,共6页中国海洋大学学报（英文版）

基　　金：supported by Environment and Conservation Fund, Hong Kong (Project number: ECF 2009/29)

摘　　要：Studying gonadal development of annual cycle can reveal the process of gametogenesis and reproductive period, and evaluate fertility and source utilization of a species. Host sea anemones are conspicuous members of tropical and subtropical reef ecosystems, but little is known about its biology including reproductive seasonality. Here we reported a one-year study on the gametogenesis and reproduction of host sea anemone(Entacmaea quadricolor) inhabiting Hong Kong waters. E. quadricolor tissues were sampled in 12 occasions from 5 m and 15 m depths of water, respectively. Histological sectioning of the tissues showed that E. quadricolor was dioecious, and populational ratio of female to male was 1:1.6. The gonadal development was asynchronous within an annual cycle, which included proliferating, growing, maturing, spawning, and resting stages. The spawning occurred between August and October when surface seawater temperature reached the annual maximum(28℃), suggesting that temperature is an important factor modulating the gonadal development and mature of E. quadricolor.Studying gonadal development of annual cycle can reveal the process of gametogenesis and reproductive period, and evaluate fertility and source utilization of a species. Host sea anemones are conspicuous members of tropical and subtropical reef ecosystems, but little is known about its biology including reproductive seasonality. Here we reported a one-year study on the game- togenesis and reproduction of host sea anemone （Entacmaea quadricolor） inhabiting Hong Kong waters. E. quadricolor tissues were sampled in 12 occasions from 5 m and 15 m depths of water, respectively. Histological sectioning of the tissues showed that E. quad- ricolor was dioecious, and populational ratio of female to male was 1：1.6. The gonadal development was asynchronous within an annual cycle, which included proliferating, growing, maturing, spawning, and resting stages. The spawning occurred between August and October when surface seawater temperature reached the annual maximum （28℃）, suggesting that temperature is an important factor modulating the gonadal development and mature ofE. quadricolor.

关 键 词：Entacmae aquadricolor GONAD annual cycle HISTOLOGY seawater temperature 

分 类 号：S917.4[农业科学—水产科学]