【摘 要】
：
The genetic differences of 15 mitten crab populations from 6 river systems in mainland China and 1 population from Russia were studied based on RFLP analysis of
【机 构】
：
Tianjin Key Laboratory of Aqua-Ecology and Aquaculture,College of Animal Science and Technology
论文部分内容阅读
The genetic differences of 15 mitten crab populations from 6 river systems in mainland China and 1 population from Russia were studied based on RFLP analysis of mitochondrial cytochrome oxidase subunit I (COI).The results showed that Tas I-RFLP pattern could be used as a genetic marker to distinguish Eriocheir hepuensis from Eriocheir sinensis, Eriocheirjaponica and Eriocheir leptognathus;genetic distances among 13 populations ofEriocheir sinensis range from 0 to 0.015, indicating that they were different geographic strains;the subspecies status ofEriocheir sinensis and Eriocheir hepuensis (population from Nanliujiang) were considered owning to their genetic distances of 0.02-0.044,indicating that genetic divergence between them was low; Eriocheir leptognathus (population from Nanpaihe, Tianjin) was the most distant taxon with genetic distances value of 0.147-0.195,which could be defined as genetic distances between species in genus Eriocheir.
其他文献
在激烈的国际市场竞争中,产品的安全和性能仍是最核心的竞争因素——这是在2011年12月7日,致力于推动产品安全的第三方检测认证机构UL(Underwriters Laboratories Inc.)首次
关联规则是一种常见的知识表达形式.本文介绍了关联规则的提取模式和基于PS架构提取模式的不足;介绍了关联规则兴趣度的定义,包括客观兴趣度和主观兴趣度以及综合兴趣度.
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
世界之大,色彩之多。在这五彩缤纷的世界里,有各种各样的颜色。其中,我最喜欢的就是那代表天空的颜色——天蓝。我喜欢天蓝色,因为它像天空一样美丽,带给人们一种凉爽、自在
在一个雪花飘飞的中午。波克朗来到好朋友杰森的住所。一进屋，波克朗不禁大吃一惊，只见杰森手脚都被捆着。绑在床上。
在晴朗的夜晚仰望天空,我们经常会看到流星飞过,在天空划出一道亮光.这亮光从何而来呢?与我们两手相搓时手会发热类似,流星在大气层中高速运动时,会因为和大气摩擦生热而燃烧
Observational analysis shows that a Mesoscale Convective System (MCS) occurred on May 13- 14 2004 along the coastal area in South China. The MCS initiated among
作为发展战略性新兴产业的重要载体,国家高新区在北斗卫星导航产业的发展中提前布局,发挥着重要作用。作为发展战略性新兴产业的重要载体,国家高新区在北斗卫星导航产业的发
学术界普遍认为:二战之后,日本政府为实现其政治目的,制定了奥运公关策略,并从1952年芬兰赫尔辛基奥运开始逐步实施,到1964年,日本政府成功举办东京奥运会,而日本队一举挤进
以苏州地理环境的地域分异为基础,重点依据人文地理环境中的人口、城市、产业集聚的差异,划分苏州地理区域,在此基础上阐述各区的特征和区域发展的前景,这无论对区域管理还是