银鲳早期鳞被的覆盖和初生鳞的发育  

EARLY COVER OF SQUAMATION AND THE DEVELOPMENT OF PRIMARY SCALES FOR PAMPUS ARGENTEUS

作　　者：唐杰[1] 周硕 王亚军[1] 胡佳宝 王想兵[1] 王冠林 蒋欢 严小军 TANG Jie;ZHOU Shuo;WANG Ya-Jun;HU Jia-Bao;WANG Xiang-Bing;WANG Guan-Lin;JIANG Huan;YAN Xiao-Jun(Key Laboratory of Applied Marine Biotechnology,College of Oceanology,Ningbo University,Ningbo 315211,China;School of Civil and Environmental Engineering and Geography Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学海洋学院应用海洋生物技术重点实验室,宁波315211 [2]宁波大学土木与环境工程与地理科学学院,宁波315211

出　　处：《水生生物学报》2023年第12期1948-1953,共6页Acta Hydrobiologica Sinica

基　　金：宁波市科技创新2025年重大专项(2021Z003);宁波自然科学基金(202003N4121);宁波甬江人才引进项目;国家自然科学基金(31772869、31872586、31872195和42076118)资助。

摘　　要：为了研究人工养殖银鲳早期鳞被的覆盖和初生鳞的发育过程,采用茜素红染色法和苏木精-伊红染色法对人工养殖银鲳的鳞片进行了观察和测量。结果显示:银鲳鳞片的起始中心有3个,分别为尾柄中部区域、鳃盖后缘和胸鳍基部;在(20±1.8)℃的育苗水体中,银鲳在体长(30±0.95)mm开始出现鳞片,鳃盖后缘及胸鳍基部的鳞片沿着侧线方向扩展,直至与尾柄中心向侧线方向扩展的鳞片相接;在体长(45.58±0.73)mm鳞被覆盖完全。鳞被向头部扩展的速度快于向尾部扩展的速度,向背部扩展的速度快于向腹部扩展的速度。银鲳整个生命阶段都为圆鳞,不存在圆鳞-栉鳞的过渡。组织学结果显示:鳞片是由鱼类表皮和真皮之间的成纤维细胞聚集发育而来的,其过程共包括形态发生早期、形态发生晚期、分化早期和分化晚期4个阶段;银鲳鳞片的发生在变态(由梭形过渡到成年侧扁状外形)之后,且各鳍条均已完全形成,与其他真骨鱼具有共性。这些研究结果丰富了银鲳早期发育的生物学数据,有助于了解其在系统学和功能形态学上的特征。In order to study the early scale covering and primary scale development of captive Pampus argenteus,alizarin red staining and hematoxylin-eosin staining were used to observe and measure the scales of captive Pampus argenteus.The results showed that Pampus argenteus has three initial centers of scales,namely the middle region of caudal stalk,the posterior margin of gill cover and the base of pectoral fin.At water temperature of(20±1.8)℃,the scales of Pampus argenteus began to appear at(30±0.95) mm in length.The scales at the posterior edge of the gill cover and the base of the pectoral fin extend along the lateral line until they come into contact with the scales extending laterally from the center of the caudal peduncle.The scales were completely covered at the length of(45.58±0.73) mm,which spread to the head faster than to the tail,and to the back faster than to the abdomen.The whole life stage of Pampus argenteus is round scale,without the transition between round scale and comb scale.Histological results showed that the scale was formed by the aggregation of fibroblasts between the epidermis and dermis of fish,and the process included four stages:early morphogenesis,late morphogenesis,early differentiation and late differentiation.The scales of Pampus argenteus occur after metamorphosis(transition from spindle shape to adult lateral flat shape) and the fins are fully formed,which is in common with other ebony fish.These results enrich biological data of the early development of Pampus argenteus and contribute to the understanding of its systematics and functional morphology.

关 键 词：鳞被 覆盖 初生鳞 发育 银鲳 

分 类 号：Q174[生物学—水生生物学]