Genetic differentiation among eight color types of the freshwater goby,Rhinogobius brunneus, from western Japan
Genetic differentiation among eight color types of the freshwater goby,Rhinogobius brunneus, from western Japan
复制标题
日本西部淡水虾虎鱼 (Rhinogobius brunneus) 八种颜色类型的遗传分化
DOI：
10.1007/bf02905670
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
S. Enami
中科院分区：
文献类型：
--
作者：
Y. Masuda;T. Ozawa;S. Enami
采用电泳技术研究了日本西部8种颜色的棕吻虾虎鱼的遗传分化。四个同域类型（交叉带，黑暗，钴和大黑暗（A）型）没有共享等位基因之间的12个位点的检测。在这些类型中没有发现杂交标本。这4种类型间的平均遗传距离在0.13 ~ 0.72之间，均在同类鱼类的遗传距离范围内。其他4种类型（大黑型（B）、橙子型、新池湖型和房总型）间的平均遗传距离仅为0.01 ~ 0.03，均在同种群体间的遗传距离范围内。这些结果表明，前4种类型是明显分离的种，后4种类型可能是第5种的种内变异。目前已知的有3种（Hayashi，1984）：R. giurinus（Rutter）、黄毛拟步行虫R. brunneus（Temminck et Schlegel）和红腹锦鸡儿R. flumineus（Mizuno）。在这些种类中，以R.棕褐色是该国最丰富和最知名的，但由于其广泛的颜色变化，其分类非常混乱。
Genetic differentiation among eight color types of the freshwater goby, Rhinogobius brunneus, from the western part of Japan was investigated by using electrophoretic methods. Four sympatric types (Cross-band, Dark, Cobalt and Large-Dark (A) types) did not share alleles at between one and six loci out of 12 loci tested. No hybrid specimens were found among these types. The average genetic distances among these four types ranged from 0.13 to 0.72, which fall within the range of values among congeneric species of fishes. The average genetic distances among the other four types, Large-Dark (B), Orange, Shinji-Lake and Boso types, were only 0.01 to 0.03, and fall within the range of values among conspecific populations. These results suggest that the former four types are clearly discrete species and the latter four types may be considered as intraspecific variations of a fifth species.The gobiid genus Rhinogobius is a common group of freshwater fishes in Japan. At present three species are recognized (Hayashi, 1984): R. giurinus (Rutter), R. brunneus (Temminck et Schlegel), and R. flumineus (Mizuno). Among these species, R. brunneus is the most abundant and well-known in the country, but its taxonomy is very confusing because of its wide color variations.