Molecular Systematics of Hispaniolan Pupfishes (Cyprinodontidae: Cyprinodon): Implications for the Biogeography of Insular Caribbean Fishes.
From: Zoology Department, Oklahoma State University, Stillwater, OK 74078, USA. echelle@okstate.edu
Molecular phylogenetics and evolution
- Publish Date: Jun 2006
- ISSN: 1055-7903
- Volume: 39
- Issue: 3
- Pages: 855-64
- Medium: Print
- Language: English
- Citation (JAMA): Echelle Anthony A, Fuselier Linda, Van Den Bussche Ronald A, et al. Molecular Systematics of Hispaniolan Pupfishes (Cyprinodontidae: Cyprinodon): Implications for the Biogeography of Insular Caribbean Fishes.. Mol. Phylogenet. Evol. Jun 2006;39:855-64
Abstract
We used sequence variation in the mtDNA control-region and ND2 and cyt b genes to assess the systematics and biogeography of the five species of pupfish (Cyprinodon) on Hispaniola. These include four endemics, the relatively large-bodied Cyprinodon bondi, Cyprinodon nichollsi, and Cyprinodon sp., each from a separate lake in southwestern Hispaniola, and Cyprinodon higuey from a coastal lake in eastern Hispaniola. The fifth species consists of coastal populations referable to Cyprinodon variegatus riverendi. The results indicate that Hispaniola has been invaded by at least two forms, first by a late Pliocene progenitor of Cyprinodon variegatus ovinus and the large-bodied Hispaniolan species, and, more recently, by one or more ancestral forms allied with Cyprinodon variegatus variegatus and C. v. riverendi. Levels of divergence indicate that large expanses of open sea have not acted as long-term barriers to inter-island dispersal of cyprinodontiform fishes. This study, together with the molecular systematics of other insular Caribbean fishes, indicates that most insular groups originated from late Neogene dispersal from the mainland. The patterns of mtDNA variation in Cyprinodon showed little congruence with the species/subspecies taxonomy.
Mesh Headings (Keywords): Animals, DNA, Mitochondrial, Geography, Killifishes, Polymorphism, Restriction Fragment Length, Species Specificity, West Indies
Check for Full Text / PubMed Unique Identifier (PMID): 16442312
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