James Evans

Techniques For Capturing, Handling, And Marking Nutria

Trapping, handling, and marking methods were evaluated for wild nutria (Myocastor coypus) in agricultural areas in Louisiana and Texas. Treadle-operated box traps, set on rafts instead of land, increased retrap response and reduced mortality. A modified leg-hitch sling and the tailhold method were found best for simple handling, and a light-weight restraining device was developed for close examination. Sodium pentobarbital injected intrathoracically at 50-60 mg!kg was the safest and most consistent anesthetic; carrot baits treated with diazepam effectively tranquilized nutria for safe...