首页 | 本学科首页   官方微博 | 高级检索  
     


REPRODUCTIVE CYCLE OF THE CUTTLEFISH, SEPIA OFFICINALIS (L.) IN THE NORTHERN PART OF THE BAY OF BISCAY
Authors:GAUVRIT, E.   GOFF, R. LE   DAGUZAN, J.
Affiliation:1Station de Biologie Marine de Bailleron 56860 Séné, France; and 2Communauté Urbaine de Brest 3 rue Dupleix, 29200 Brest, France
Abstract:The sexual cycle of the cuttlefish, Sepia officinalis, fromthe northern part of the Bay of Biscay was followed over severalyears (1988 to 1990 and 1992 to 1993). Successive maturity stagesare reached at the same time regardless of site in the northernpart of the Bay. In this area, the majority of cuttlefish reproduceduring their second year of life (group II) whereas the remainderreproduce in their first year (group I). The first visible signsof sexual development concern the testis in males and the genitaltract in females. Males mature earlier than females: the firstspermatophores appear in July (group II) and October (groupI) while mature eggs appear from December (group II) and March(group I). The breeding season lasts from about mid-March tolate June (3.5 months). (Received 2 February 1996; accepted 30 May 1996)
Keywords:
本文献已被 Oxford 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号