Other Projects:

Recently I teamed up with Stephen Mackessy (University of Northern Colorado) to investigate the evolution and ontogeny of venom in montane Mexican vipers. Together we are working with Fernando Mendoza-Quijano (ITAH), Kirk Setser, and Estrella Mociño (UNAM). Some of our recent findings suggest a significant ontogenetic shift in venom composition in Crotalus polystictus from Estado de México.

Collaborations

Robert W. Bryson, Jr.

Phylogeography of montane Mexican quail, with John Klicka (Barrick Museum), Ty Allen, and Fernando Mendoza-Quijano (ITAH).

Adrián Quijada-Mascareñas (Universidad Michoacana de San Nicolás de Hidalgo) and I, together with numerous other collaborators, are working towards unraveling the systematic relationships of the Crotalus molossus group. It was recently discovered that C. totonacus, formerly considered a member of the C. durissus species complex, is nested deep within C. molossus (Wüster et al., 2005). Range-wide sampling of both taxa should allow us to further clarify this relationship.

Phylogenetic relationships of Lampropeltis, with Frank Burbrink and Sara Ruane(College of Staten Island/CUNY), Bob Hansen, and Fernando Mendoza-Quijano (ITAH). Similar to Bryson et al. (2007), with more sampling and a total evidence approach.

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Montane Mexican Rattlesnakes: Evolution and Ontogeny of Venom

Phylogeography of Black-tailed Rattlesnakes