Survival, Breeding Frequency, and Migratory Orientation in the Jefferson Salamander, Ambystoma Jeffersonianum

摘要: —Accurate estimates of demographic parameters, such as survival and breeding frequency, are necessary for the conservation management animal populations. Additionally, life-history data required gaining an empirical understanding ecology natural We monitored a population Jefferson Salamanders (Ambystoma jeffersonianum) in permanent mountain-top pond at southern limit this species’ geographic range Virginia over four years. used closed multistate mark-recapture models with Pollock's robust design to estimate parameters population. we point-of-capture compare orientation migrations into out within among Our model selection results support consistent annual adult across years higher males compared females. probability sequential were high both sexes during our study. rankings capture indicate that females had detection when entering pond, likely reflecting differences between arrival time pond. found directionality some, but not all, migrations, despite indications individual fidelity study provides first assessment migratory patterns A. jeffersonianum contributes reproductive history pond-breeding amphibians.