My general research interests are in the systematics, ecology and conservation of amphibians and reptiles, particularly turtles. I currently have active research projects or supervise masters students with active research in: Conservation ecology of Western Pond Turtles Conservation genetics of Giant Garter Snakes Conservation genetics of marine turtles Conservation and invasive species issues in Hawaii Systematics of softshell turtles Eco-morphology of garter snakes Sexual selection and asymmetry in fence lizards

Tibisay Escalona, Tag N. Engstrom, Hernandez OE, Brian C. Bock, Richard C. Vogt and Nicole Valenzuela. In press. Population genetics of the endangered South American freshwater turtle, Podocnemis unifilis, inferred from microsatellite DNA data. Conservation Genetics. In press. Tag N. Engstrom, Taylor Edwards, Matt Ostentowski, Erin Meyers. 2007. A compendium of PCR primers for mtDNA, microsatellite and other nuclear markers for freshwater turtles and tortoises. Chelonian Research Monographs 4:124-141.pdf John J. Wiens, Tag. N. Engstrom, and Paul T. Chippindale. 2006. Rapid diversification, incomplete isolation, and the "speciation clock" in North American salamanders (Genus Plethodon): Testing the hybrid swarm hypothesis of rapid radiation. Evolution, 60(12): 2585–2603. pdf Tag N. Engstrom, H. Bradley Shaffer, & William P. McCord. 2004. Multiple datasets, high homoplasy and the phylogeny of softshell turtles. Systematic Biology 53(5):693-710. pdf Mathew K Fujita, Tag N. Engstrom, David E. Starkey, H. Bradley Shaffer. 2004. Turtle phylogeny: insights from a novel nuclear intron. Molecular Phylogenetics and Evolution 31:1031-1040. pdf Kagima, B. W., N. Valenzuela, T. Engstrom, B. Bock. 2003. Preliminary population genetic study of the yellow spotted Amazon river turtle (Podocnemis unifilis) using microsatellite DNA data. Integrative and Comparative Biology 43: 1025-1025. Tag N. Engstrom & William P. McCord. 2002. Molecular support for the taxonomic conclusions of McCord and Pritchard (2002) regarding Chitra. Hamadryad 27(1):57-61. pdf Tag N. Engstrom, Peter A. Meylan & Anne B. Meylan. 2002 Origin of Juvenile loggerhead turtles (Caretta caretta) in developmental habitat in Caribbean Panama. Animal Conservation. 5(2):125-133. pdf Tag N. Engstrom, H. Bradley Shaffer, & William P. McCord. 2002. Phylogenetic diversity of endangered and critically endangered southeast Asian softshell turtles (Trionychidae: Chitra). Biological Conservation. 104:173–179. pdf