ABSTRACT
Population size estimator is derived for a proportional trapping-removal model with a known ratio between two sub-population sizes, and the corresponding asymptotic properties is obtained. The performance of the proposed estimator is checked via simulation studies and an example.
Acknowledgments
This work is partially supported by NSFC (10471004), RFDP, and the National Basic Research Program of China (2003CB716101). The authors are grateful to the referee for valuable suggestions.
Notes
P r1: capture probability for the first kind of animals; P r2: capture probability for the second kind of animals; n and ñ: no. of successes from 10,000 simulations; P c : 95% coverage probabilities, simulated standard errors in parentheses.
r: Possibly mis-specified ratio of ν1/ν2, with 1.0 being its true value; P c : 95% coverage probability, simulated standard errors in parentheses.
Type 1: Peromyscus maniculatus; Type 2: other species.