首页|喷点雪印小丑鱼的胚胎及仔、稚、幼鱼形态发育观察

喷点雪印小丑鱼的胚胎及仔、稚、幼鱼形态发育观察

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为建立喷点雪印小丑鱼(Amphiprion sp.)人工繁育技术,在人工模拟自然条件下对其繁殖习性、胚胎发育及胚后发育进行观察.结果表明:喷点雪印小丑鱼受精卵长径为1.9～2.1 mm,短径为0.93～0.95 mm;胚胎发育主要经历受精卵期→胚盘期→卵裂期→囊胚期→原肠胚期→神经胚期→器官形成期→孵化期等;在水温为(27±0.5)℃时,受精卵约需197h孵化出膜.初孵仔鱼全长(4.415±0.412)mm,身体透明,鳍膜明显,卵黄囊仅剩小部分残留,并已开口摄食.9日龄全长(6.813±0.835)mm,鳍膜消失,各鳍基本形成,头部开始出现纹带,进入稚鱼期.21日龄全长(10.581± 2.659)mm,身体被鳞,体色、纹路开始分化.35日龄全长(15.512±4.927)mm,形成4种不同体色、纹路的幼鱼.作为人工选育的品系,喷点雪印小丑鱼胚后发育过程中最为明显的变化是幼鱼期体色、纹路等形态特征的形成与分化.
Observation of embryo and morphological development of larval,juvenile and young speckled snowmark clownfish(Amphiprion sp.)
In order to improve the artificial breeding technology of the speckled snowmark clownfish(Amphiprion sp.),we ob-served the breeding habits,embryonic development and post-embryonic development under artificial simulated natural condi-tions.The results show that the fertilized eggs were 1.9-2.1 mm in long diameter and 0.93-0.95 mm in short diameter.The em-bryonic development mainly went through sperm-egg stage,embryonic disc stage,oogenesis stage,blastocyst stage,protointes-tinal stage,neuroembryonic stage,organ formation stage and hatching stage.At the water temperature of(27±0.5)℃,it took approximately 197 h for the fertilized egg to hatch out of the membrane.The newly hatched larvae had a total length of(4.415±0.412)mm,a transparent body,obvious fin membranes,and only a small portion of the yolk sac remained,which had been opened for feeding.Larval stage:At 9 days after hatching[DAH,body length of(6.813±0.835)mm)],the fin membrane disappeared and the fins formed,and the banding on the head appeared.Juvenile stage:at 21 DAH[Body length of(10.581±2.659 mm)],accompanied by scale formation on the body,the differentiation of body colour and stripe banding start-ed to appear.Young stage:35 DAH[Body length of(15.512±4.927)mm],four different strains with different body colour pat-terns were easily identified.In brief,as an artificially selected new variety,the most obvious feature during the post-embryonic development of speckled snowmark clownfish is formation and differentiation of body colour patterns such as stripe banding during juvenile stage.

Speckled snowmark clownfishEmbryonic developmentPost-embryonic developmentYoung and juvenile fishStripe banding

谭泽宇、李涛、姜敬哲、黄小林、杨育凯

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中国水产科学研究院南海水产研究所深圳试验基地,广东深圳 518121

大连海洋大学水产与生命学院,辽宁大连 116023

中国水产科学研究院南海水产研究所/农业农村部南海渔业资源开发利用重点实验室/广东省渔业生态环境重点实验室,广东广州 510300

喷点雪印小丑鱼 胚胎发育 胚后发育 仔、稚鱼 纹带

深圳市规划与自然资源局农业发展专项资金农业高新技术项目(渔业类)深圳市规划与自然资源局农业发展专项资金农业高新技术项目(渔业类)海南省自然科学基金项目海南省自然科学基金项目海南省科技专项资助中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助广东省现代农业产业技术体系创新团队建设专项资金

2021-9282023-222320QN360321QN0942ZDYF2022XDNY3492021SD092023TD212020TD552023KJ143

2024

10.12131/20230119

南方水产科学
中国水产科学研究院南海水产研究所

南方水产科学

CSTPCD北大核心
影响因子：1.591
ISSN：2095-0780
年,卷(期)：2024.20(2)
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