Phylogeography, phylogeny and hybridization in trichechid sirenians implications for manatee conservation
The three living species of manatees, West Indian (Trichechus manatus), Amazonian (Trichechus inunguis) and West African (Trichechus senegalensis), are distributed across the shallow tropical and subtropical waters of America and the western coast of Africa. We have sequenced the mitochondrial DNA control region in 330 Trichechus to compare their phylogeographic patterns. In T. manatus we observed a marked population structure with the identification of three haplotype clusters showing a distinct spatial distribution. A geographic barrier represented by the continuity of the Lesser Antilles to Trinidad Island, near the mouth of the Orinoco River in Venezuela, appears to have restricted the gene flow historically in T . manatus . However, for T. inunguis we observed a single expanding population cluster, with a high diversity of very closely related haplotypes.
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | Manatíes, Trichechus manatus, Trichechus inunguis, Trichechus senegalensis, Mamíferos marinos, ADN mitocondrial, Variación genética, Filogeografía, Hibridación, Artfrosur, |
| Online Access: | http://www.icb.ufmg.br/lbem/pdf/vianna06me-mttrichechus.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|