Molecular Phylogeny of the Poeciliidae (Pisces, Teleostei)

孔雀鱼科，孔雀鱼，剑尾鱼， 是一种经常被 在许多生物学研究中用作模型系统。研究 主题包括动物地理学、癌症、交配系统、自然 性选择，比较生态学，保护 生物学尽管它们被广泛使用，但人们对它们知之甚少。 花骨鱼科的系统发育或系谱关系。的 纽约州立大学石溪分校的阿克塞尔迈耶博士的这个项目的目的是 利用线粒体为Poeciliids建立了这样一个系统发生学 和核DNA序列数据作为突变的度量 物种之间的差异。 线粒体基因细胞色素B的全序列 （约1100个碱基对）和核基因的部分序列， 将获得原癌基因X-src（约520个碱基对 从几个代表的物种和属在这方面， 家人 线粒体和核序列数据的使用 允许推断广泛的系统发育关系 分类水平，从物种到家庭，并提供 独立检查所产生的系统发育估计。 这些估计将允许测试的vicariance模型， 进化多样化的地理学和其他方面 这群鱼。

Poeciliids (Pisces, Poeciliidae), the guppies, swordtails, and mollies, are a family of small fishes that are frequently used as a model system in many biological studies. Research topics range from zoogeography, cancer, mating systems, natural and sexual selection, comparative ecology, to conservation biology. Despite their widespread use, very little is known about the phylogenetic or genealogical relationships of poeciliids. The aim of this project by Dr. Axel Meyer at SUNY-Stonybrook is to establish such a phylogeny for the poeciliids using mitochondrial and nuclear DNA sequence data as measures of mutational differences between species. The complete sequence of the mitochondrial gene cytochrome b (about 1100 base pairs) and partial sequences of a nuclear gene, the proto-oncogene X-src (about 520 base pairs), will be obtained from several representatives of the species and genera in this family. The use of both mitochondrial and nuclear sequence data permits the inference of phylogenetic relationship across broad taxonomic levels, from species to family, and also provides independent checking of the resulting phylogenetic estimates. These estimates will then permit testing of vicariance models of biogeography and other aspects of evolutionary diversification in this group of fishes.