Embryonic development of the mantis shrimp Oratosquilla oratoria
LIU Hai-ying1,QIN Yu-xue1,JIANG Yu-sheng2,WANG Gui-e1
1.Center of Marine Ranching Engineering Science Research of Liaoning Province,Dalian Ocean University;2.Key Laboratory of North Mariculture,Ministry of Agriculture,Dalian Ocean University,Dalian 116023,China
Abstract: Embryonic development of mantis shrimp Oratosquilla oratoria was observed successively under a microscope.The embryonic development of the mantis shrimp was divided into six stages including fertilized egg,cleavage,blastula,gastrula,and egg-nauplius and protozoea stages.The embryos were found to take 18 d at water temperature of(21±1)℃and at a salinity of 29.0.The egg-carrying mantis shrimp and the embryonic development were primarily influenced by water temperature,artificial burrows,photoperiod,food supply,and environmental stability.The present study provides knowledge of the mantis shrimp biology,and for successful artificial breeding.