Genetic analysis of Aequipecten opercularis and Mimachlamys varia (Bivalvia: Pectinidae) in several Atlantic and Mediterranean localities, revealed by mitochondrial PCR-RFLPs: a preliminary study     

Mercedes Fernandez-Moreno  Alberto Arias-Perez  Ruth Freire  & Josefina Méndez 《Aquaculture Research》2008,39(5):474-481

Aequipecten opercularis (Queen scallop) and Mimachlamys (Chlamys) varia (Black scallop) are important natural resources occurring in Atlantic and Mediterranean coasts. To develop an optimal sustainable exploitation plan, it is important to study the genetic structure of the different populations. In this study, we used polymerase chain reaction‐restriction fragment length polymorphisms for the determination of the genetic variation and population structure of these two species in different localities. Ten composite haplotypes were generated for A. opercularis and 15 haplotypes for M. varia. Of these, six and four were unique respectively. The analysis of the distribution of the different haplotypes between the localities showed no clear evidence of subdivision in A. opercularis, while in M. varia the results indicated that the two localities analysed should be managed as separate stocks.  相似文献   

叉尾斗鱼关睾虫(单殖亚纲)病的鳃组织病理学研究   总被引：1，自引：1，他引：1  

李海燕  香咏瑜 《中国水产科学》2006,13(5):829-833

对叉尾斗鱼（Macropodus opercularis）的大钩关睾虫（Heteronchocleidus magnihamatus Zhang et Ji）和小钩关睾虫（H．buschkieli Bychowsky）病进行了病理学研究。结果表明，关睾虫寄生于叉尾斗鱼的初级鳃丝及鳃小片，轻度感染时，病变不明显，导致部分鳃丝组织完整性受到破坏；中度感染时，鳃丝组织增生、融合，有大量黏液细胞浸润，鳃小片与窦状隙分离，形成空隙；重度感染时，鳃丝组织细胞解离、空泡化，呼吸上皮与毛细血管分离严重，形成空腔。  相似文献   

叉尾斗鱼遗传多样性的RAPD分析     

刘宏毅  黎明星  肖俊  黄愉淋  张明  甘西 《大连水产学院学报》2012,27(2):158-161

采用RAPD标记技术对叉尾斗鱼Macropodus opercularis 5个地理群体（南宁群体、桂林群体、龙岩群体、福州群体和广州群体）的遗传多样性进行了检测。结果表明：从40个随机引物中筛选出11个有效引物,对每条叉尾斗鱼的基因组DNA进行扩增,共扩增出139条片段;各群体的多态位点比例为26.44%～40.95%,Nei基因多样性指数为0.1042～0.1457,Shannon指数为0.1543～0.2176;而总体的多态位点比例、Nei基因多样性指数和Shannon指数分别高达84.89%、0.3110和0.4606。研究表明,叉尾斗鱼的遗传变异主要来自群体间,而群体内部的遗传多样性水平较低。  相似文献