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Position: Home > Articles > Observation of Embryonic and Larval Development of Varicorhinus scaphesthes macrolepis Fisheries Science 2005,24 (11)

泰山赤鳞鱼的胚胎发育和仔鱼发育

作  者:
杨晓梅;侯立静;马跃;翟玉梅;岳永生
单  位:
山东农业大学动物科技学院;山东大学生命学院
关键词:
泰山赤鳞鱼;早期胚胎;仔鱼;发育
摘  要:
试验结果表明:泰山赤鳞鱼产卵时间在4~5月,自然产卵水温为18~26℃,产卵于水底细沙中,分散产卵。卵呈弱粘性,金黄色,属沉性卵,平均卵径2.5 mm。在水温18~22℃条件下,胚胎从受精到孵化出膜历时66 h,经过了胚盘形成期、卵裂期、囊胚期、原肠胚期、神经胚期、器官分化期6个主要阶段。初孵仔鱼全长6.0~6.5 mm。卵黄囊前部膨大成球形,约占鱼体整个长度的1/3;后端为均匀的棒状。仔鱼孵出到消化道完全形成约经历136 h。
译  名:
Observation of Embryonic and Larval Development of Varicorhinus scaphesthes macrolepis
作  者:
YANG Xiao-mei~1,HOU Li-jing~1,MA Yue~1,ZHAI Yu-mei~1,YUE Yong-sheng~2(1.Life Science Department,Shandong University,Jinan 250100,China;2.Animal Science and Technology Department,Shandong Agricultural University,Taian 271018,China)
关键词:
Varicorhinus scaphesthes macrolepis;embryo;larva;development
摘  要:
Varicorhinus scaphesthes macrolepis spawns naturally in fine sands of Tai Shan Mountain brooks from April to May at water temperature of 18℃ and 26℃.The eggs scattered at pebbly and sandy shoals with slow flowing are slightly adhesive and demersed.The eggs are golden yellow in color and have a diameter of about 2.5 mm.The incubation period is 66 hours from 18 to 22℃.The embryonic development process can be divided into 6 stages,including fertilized egg,cell cleavage,blastula,gastrula,neural stage and organ formation,and there are thirty-one developmental phases observed noticeably.The organ formation stage lasts the longest during the embryonic development,which took about 37 hours.The newly hatched larvae without pigmentation,ranging from 6.0 to 6.5mm in total length,had a big spherical yolk sac and formed an intestine about 136 hours after hatching.

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