Surface Abundance, Population Size, and Movement of the Georgetown Salamander, Eurycea naufragia
Ben Pierce, Southwestern University
The Georgetown salamander, Eurycea naufragia, is an endemic neotenic salamander that is known from only 15 sites in Williamson County, TX. We conducted monthly visual encounter surveys of salamanders at two sites from 2007 to 2011 and conducted mark-recapture studies at these sites in the summer of 2010. The numbers of salamanders observed in visual encounter surveys varied from month to month, with higher numbers seen in spring and summer surveys. Estimates from the mark-recapture studies suggest that in the summer of 2010 both populations consisted of approximately 100-200 adult salamanders. Recaptures over a ten-month period demonstrated that marked salamanders exhibited high site fidelity, most being recaptured within 5 m of the point of initial capture. These studies provide basic biological information that can be used to develop a long-range conservation plan for the species.
The EuryceAlliance is an interdisciplinary working group of scientists and natural resource managers dedicated to advancing research and conservation of the neotenic Eurycea salamanders of central Texas. For more information, please visit eurycealliance.org