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斑石鲷消化系统早期发育规律研究

Studies on early developmental pattern of Oplegnathus punctatus digestive system

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为系统揭示斑石鲷(Oplegnathus punctatus)从初孵仔鱼到幼鱼阶段消化系统各组织器官结构变化的规律,本研究对1~49日龄的斑石鲷仔、稚、幼鱼进行了连续组织学切片实验分析.结果显示,1日龄的斑石鲷初孵仔鱼的消化道位于卵黄囊内侧,且仅为一条简单的管状结构.根据斑石鲷消化系统发育的状况,大致可将其分为三个阶段:1~3日龄,消化系统尚处于未分化的原始阶段,此时的斑石鲷口裂封闭,仅以卵黄囊作为营养来源,呈现完全的内源性营养;4~20日龄,消化系统初步发育,处于拥有基本的摄食、消化与吸收能力的过渡阶段,这一阶段斑石鲷口裂开启,卵黄囊逐步消失,肝胰脏快速发育成型,逐步拥有消化食物的能力,由此开始向外源性营养转变;21~35日龄,消化系统进一步发育,胃腺出现,形成结构完整的消化系统,此后斑石鲷消化系统各组织器官仅有细胞规模上的增长,不再出现结构上的质变.
To systematically reveal the change of organs of Oplegnathus punctatus at its early stage of digestive system development,continuous histological sections of O.punctatus aged from 1 to 49 days were analyzed.The results showed that the digestive tract of 1-day-old O.punctatus was located inside the yolk sac and was only a simple tubular structure.The development of the digestive system of O.punctatus can be roughly divided into three stages.At 1~3 days of age,the digestive system was still in the primitive stage.At this age,the mouth fissure was closed,and only the yolk sac was used as the nutrient source,thus presented a complete endogenous nutrition.At 4~20 days of age,the digestive system was preliminarily developed,and it was in the transition stage with basic feeding,digestion and absorption capacity.At this stage,the mouth fissure opened,the yolk sac gradually disappeared,and the hepatopancreas developed rapidly.The fish gradually developed the ability to digest food.The tran-sition to exogenous nutrition began.Tt 21 to 35 days of age,the digestive system developed further and the gastric glands appeared,forming a complete digestive system.After that,the tissues and organs of the digestive system only increased in cell scale rather than structural changes.

Oplegnathus punctatusearly developmental stagedigestive systemHistology

陈宵、李军、姬广磊、王雨福、马玉婷、肖志忠、刘相全、连昌、连亚明、杨理忠

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上海海洋大学水产与生命学院,上海 201306

山东省海洋资源与环境研究院,山东省海洋生态修复重点实验室,山东烟台 264006

中国科学院海洋研究所/中国科学院海洋大科学研究中心,中国科学院/山东省实验海洋生物学重点实验室,山东青岛 266071

南方海洋科学与工程广东省实验室(广州),广东 广州 511458

威海市海洋发展研究院,山东威海 264200

威海市文登区海和水产育苗有限公司,山东威海 264400

威海市好慧淦海洋生物科技有限公司,山东威海 264400

莆田市蒲盛水产科技有限公司,福建莆田 351174

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斑石鲷 早期发育阶段 消化系统 组织学

2024

海洋湖沼通报
山东海洋湖沼学会

海洋湖沼通报

CSTPCD北大核心
影响因子:0.464
ISSN:1003-6482
年,卷(期):2024.46(6)