Biochemical Systematics of Pupfishes

拟议的研究将使用线粒体分析 DNA和蛋白质研究成员之间的关系 杂色鲤科鱼类复合体。 这种植物的种类 复合体包括一个分布广泛的种（C. variegatus）， 发生在从马萨诸塞州到坦皮科，墨西哥和西部 从巴哈马群岛到牙买加的印度群岛。 剩下的20种 建筑群占地面积小得多，主要是在 梭杂色或接近其分布范围的边缘。 主 目标是1）了解地理的主要模式 2）在广泛分布的物种中的变化，2）将其与 地理上的进化关系的变化 更多的限制物种，和3）使用结果来评估 复合体的地理学假说和物种形成模式。 特别令人感兴趣的是， 广布种C.杂色的可能更接近 与其他物种的关系，而不是与自己的种群的关系 物种 如果是这样的话，那么分布广泛的物种的形态 是复合体的原语，它包含一个或多个隐藏的 物种 这些结果将对今后的评估具有重要意义， 特别感兴趣区域的动物起源 地理学;例如，西印度群岛和西海岸 墨西哥湾。

The proposed research would use an analysis of mitochondrial DNA and proteins to study relationships among members of Cyprinodon variegatus complex of pupfishes. The species of this complex include one wide-ranging species (C. variegatus) that occurs from Massachusetts to Tampico, Mexico and in the West Indies from the Bahamas to Jamaica. The remaining 20 species of the complex occupy much smaller areas, primarily within the range of C. variegatus or near the periphery of its range. the primary objectives are 1) to understand the major patterns of geographic variation in the wide-ranging species, 2) to relate this variation to the evolutionary relationships of the geographically more restricted species, and 3) to use the results to evaluate biogeographic hypotheses and modes of speciation for the complex. Of special interest is the question of whether populations of the wide-ranging species, C. variegatus, might be more closely related to other species than to populations of their own species. If so, then the morphology of the wide-ranging species is primitive for the complex and it comprises one or more cryptic species. The results will be important in future assessments of faunal origins for regions of particular interest in biogeography; for example, the West Indies and the western coast of the Gulf of Mexico.