POPULATION STRUCTURE OF PACIFIC POND TURTLE (ACTINEMYS MARMORATA) AT A POND IN THE CALIFORNIA DELTA: RESULTS FROM A COMPLETE TRAPPING AND RELOCATION EFFORT
Patricia M Valcarcel; WRA, Inc.; valcarcel@wra-ca.com;
A complete Pacific pond turtle (Actinemys marmorata) trapping and relocation effort occurred as part of a California Department of Water Resources and Ducks Unlimited wetland restoration and levee stabilization project. Trapping and salvage occurred at a 6-acre scour pond on Sherman Island, located in the western California Delta. In April 2015, a trapping effort was conducted prior to initiation of restoration activities. This work was followed with a salvage effort conducted concurrently with construction at the pond which began in late summer and was completed in October 2015. A total of 222 unique individuals encompassing all ages including hatchlings were successfully captured and relocated during the trapping and salvage efforts. Turtles were relocated 0.8 mile away, and only two individuals were recaptured following relocation. Demographic data including sex, carapace size, and coloration were taken on all individuals, and additional data on mass, gravidness, plastron, and inguinal scute size were also gathered during the spring effort. Summary data of turtles captured are presented including size distribution, sex ratio, potential trap biases, and trapping lessons including observations of pond characteristics and species. This study represents the first known trapping and relocation of an entire population of Pacific pond turtle.
Ecology and Conservation of Amphibians and Reptiles