Unveiling Escape and Capture Rates of Aquatic Snakes and Salamanders (Sirenspp. andAmphiuma means) in Commercial Funnel Traps

John D. Willson, Christopher T. Winne, Luke A. Fedewa
2005 Journal of Freshwater Ecology  
Aquatic funnel trapping with commercially available minnow traps has proven effective for sampling several aquatic snake species. However, the efficacy of this technique for sampling snakes has received little controlled evaluation. We investigated the ability of aquatic snakes to escape from three funnel trap varieties (cylindrical steel, cylindrical plastic, and rectangular collapsible nylon mesh). We found that when intentionally released into traps, the majority (74%) of snakes escaped
more » ... snakes escaped within 24 hours. Snakes escaped most frequently from collapsible traps, and of the species tested, Seminatrix pygaea escaped most frequently. We found significant differences in capture rates among trap types for S. pygaea, Farancia abacura (both captured most in plastic traps), and Nerodiafasciata (captured most in steel traps). Additionally, as we captured many large aquatic salamanders (Siren spp. and Amphiuma means), we also report trapping efficacies of the funnel traps for these amphibians.
doi:10.1080/02705060.2005.9664980 fatcat:mbe4n3t4urf75fj5veyxkd6kwa