日本蟳的性腺发育和生殖周期  

STUDY ON THE DEVELOPMENT OF SEX GLAND AND REPRODUCTIVE CYCLE OF CHARYBDIS JAPONICA(A.MILNE-EDWARDS)

作　　者：许星鸿[1] 阎斌伦[1] 郑家声[2] 徐加涛[1] 徐国成[1] 吴建新[1] 

机构地区：[1]淮海工学院江苏省海洋生物技术重点建设实验室,江苏连云港222005 [2]中国海洋大学海洋生命学院,山东青岛266003

出　　处：《海洋湖沼通报》2010年第2期29-36,共8页Transactions of Oceanology and Limnology

基　　金：江苏省海洋生物技术重点建设实验室开放课题(Z2007HS006);连云港市科技发展计划项目(SF0705)资助

摘　　要：对日本蟳(Charybdis japonica)的性腺发育、生殖周期、繁殖习性和性比等进行了研究。根据其性腺的组织学和外部形态特征,将卵巢发育分为6个发育期:形成期、小生长期、大生长期、成熟期、排放期和恢复期;将精巢发育分为5个发育期:形成期、生长期、成熟期、排放期和恢复期。根据成熟系数的周年变化规律并结合性腺组织切片的观察结果,认为在连云港海区的日本蟳性腺发育为1年1个周期,繁殖期为5～9月,交配产卵盛期在5月中旬～6月下旬(水温17.5～23.5℃)。日本蟳为分批产卵类型,但第二批卵的数量远少于第一批卵。雌、雄性腺发育基本同步,雄性发育略快,雌雄比约为1∶1。The sex gland development,reproductive cycle,breeding behaviour and sexual ratio of Charybdis japonica were described in this paper.According to the morphologic and histological characters,the ovary development of Charybdis japonica was divided into six phases as follows： forming phase,small developing phase,great developing phase,maturation phase,spawning phase,and recovery phase.And the testicular development cycle could be divided into five phases： forming phase,developing phase,maturation phase,spawning phase,and recovery phase.By observing the seasonal changes of the gonosomatic index and the changes of sex gland on histological sections,it was considered that the sex gland development of Charybdis japonica has only one cycle in a year in Lianyungang area.Its reproductive period is from May to September and the reproduction peaks from the middle of May to the late June which has the temperature variation range： 17.5～23.5℃.The type of spawn is in batches,but the egg laying amount is significantly reduced in secondary spawning.The developmental speed of male gonad is slightly quicker than the female.The sexual ratio between the female and male is 1∶1.

关 键 词：日本蟳 性腺发育 生殖周期 

分 类 号：Q959.223.63[生物学—动物学]