83rd Annual Meeting of the American Society of Mammalogists, Texas Tech University, Lubbock, Texas.

1. Population-level Effects of Bot Fly ( Cuterebra fontinella ) Parasitism on White-footed Mice ( Peromyscus leucopus ) Michael J. Cramer and Guy N. Cameron Department of Biological Sciences University of Cincinnati Cincinnati, OH 45221-0006

4. Rodent Bot Fly Life Cycle Females lay eggs in host habitat. Hosts pick up newly hatched larvae . Larvae migrate to inguinal region and develop warble. After 3 rd instar, larvae exit host and burrow underground to pupate. Flies emerge and mate at aggregation sites. 5 days 21 days P. Meyer C. N. Shiffer M. J. Cramer

6. Study Sites Site4 Site3 Site1 Site2 Cincinnati (39 km)

7. Population Parasitism

8. Population Parasitism

9. Sex X 2 = 0.042 p > 0.05 t = 0.367 p > 0.05

10. Reproductive Activity X 2 = 0.054 p > 0.05 t = -1.434 p > 0.05

11. Age Class X 2 = 2.360 p > 0.05 t = -0.700 p > 0.05

12. Condition t = 3.287 p = 0.001 r = -0.410 p > 0.05

13. Site X 2 = 18.300 p < 0.001 F = 11.772 p < 0.001