Theses and Dissertations - UTB/UTPA

Date of Award


Document Type


Degree Name

Master of Science (MS)



First Advisor

Dr. Frederic Zaidan III

Second Advisor

Dr. Robert Edwards

Third Advisor

Dr. Brian Fredensborg


Toads in the family Bufonidae are poorly studied in southern Texas. Bufo nebulifir, a native bufonid, has been studied in its northern and southern range limits (east Texas and northern Mexico). South Texas' sub-tropical climate could impact the length of the activity period for B. nebulifer in yet unrecorded ways. This study resolves whether environmental factors correlate to Bufo nebulifer's activity, presence, and movement, using a mark-recapture method. The study was conducted for one year during February 2008 to March 2009. Environmental factors, especially rainfall and temperature were significantly correlated (PB. nebulifer . The active period of B. nebulifer is now known to extend from February through December.


Copyright 2009 Crystal Salinas. All Rights Reserved.

Granting Institution

University of Texas-Pan American

Included in

Biology Commons