Development of Amphioctopus fangsiao(Mollusca:Cephalopoda)from eggs to hatchlings:indications for the embryonic developmental management  

作　　者：Dian hang Jiang Xiaodong Zheng Yaosen Qian Qingqi Zhang 

机构地区：[1]Institute of Evolution and Marine Biodiversity,Ocean University of China,Qingdao 266003,China [2]Key Laboratory of Mariculture.Ministry of Education,Ocean University of China,Qingdao 266003,China [3]Ganyu Institute of Fishery Science,Lianyungang 222100,China [4]Ganyu Jiaxin Fishery Technical Development Co.,Ltd,Lianyungang 222100,China

出　　处：《Marine Life Science & Technology》2020年第1期24-30,共7页海洋生命科学与技术（英文）

基　　金：the following research grants:The Fundamental Research Funds for the Central Universities(201822022);Fisheries Technological Innovation and Promotion Project of Jiangsu Province(Y2017-7).

摘　　要：Amphioctopus fangsiao is an important fishery resource in northern coastal China,and there is an interest to develop its commercial cultivation under controlled conditions.In this study,we describe the embryonic development of A.fangsiao from eggs to hatchlings,focusing on the formation of the mantle,eyes and arms.Results indicate that this species has several favorable characteristics for aquaculture,such as a short incubation period and a large body size of hatchlings.During the organogenesis,the primordia of organs,including the optic sac and arm crown,first appeared at stage VIII;then the mantle primordium,eye primordia and arm crown become visible at stage IX-X,and the rudiment of embryo(mantle,eyes and arms)was completely outlined at stage XI.The retinal pigment appeared yellowish at stage X-XI and gradually deepens in pigmentation in the subsequent stages,turning from yellowish to yellow,red,dark-red and eventually black.At stage XV,the primary lid fold,with only a circular opening remaining,covered the eye,and the dorsal ocular edge did not reach the ventral side until hatching(day 1-7).Afterwards,about 24 days after hatching,both the dorsal and ventral sides of eyelid could contract freely,with an oval and elongate slit remaining that was a miniature version of the adult morphology.The chromatophores and ink sac appeared at stage XIV.These observations provide a foundation for the reproductive biology and aquaculture of A.fangsiao and also offer an important reference for the research of embryonic development in related species.

关 键 词：Octopods Amphioctopus fangsiao-Eggs Embryonic development Embryonic morphology 

分 类 号：Q95[生物学—动物学]