The fish subfamily Poeciliinae (sensu Parenti, 1981) is widely distributed across the Western
Hemisphere and a dominant component of the fish communities of Central America …

Phylogenetic relationships of members of the subfamily Poeciliinae (Cyprinodontiformes)
are investigated to test alternate hypotheses of diversification resulting from the assembly of …

Aim To test the hypothesis that the vicariant event responsible for north–south divergences
in two clades of the fish genus Poeciliopsis Regan was also responsible for north–south …

Abstract The biogeography of Central America is viewed as a classic case study in
understanding the impact of vicariant events on patterns of biotic dispersal. While many …

To assess the historical biogeography of freshwater topminnows in the genus Poeciliopsis,
we examined sequence variation in two mitochondrial genes, cytochrome b (1140 bp) and …

Researchers investigating historical biogeography rely on taxon cladograms to infer the
relationships of different areas of endemism. Unfortunately, systematists are often faced with …

Aim Geographical gradients of vertebrate species richness are determined jointly by
evolutionary and environmental factors. Support for these factors comes mostly from …

Aim We investigate the origin and colonization of the West Indian endemic freshwater fish
group Limia. We evaluate the leading hypotheses for the origins of West Indian life …

Accurately delimiting species is fundamentally important for understanding species diversity
and distributions and devising effective strategies to conserve biodiversity. However …

Stockwell & Weeks 1999). Johnson and Hubbs (1989) provided an overview of the examine
questions central to the field of conservation biology. Here, we provide an overview of the …