| Abstract: | Inbreeding depression is frequently a concern of managers interested in restoring endangered species. Decisions to reduce the potential for inbreeding depression by balancing genotypic contributions to reintroduced populations may exact a cost on long-term demographic performance of the population if those decisions result in reduced numbers of animals released and/or restriction of particularly successful genotypes (i.e., heritable traits of particular family lines). As part of an effort to restore a migratory flock of Whooping Cranes (Grus americana) to eastern North America using the offspring of captive breeders, we obtained a unique dataset which includes post-release mark-recapture data, as well as the pedigree of each released individual. We developed a Bayesian formulation of a multi-state model to analyze radio-telemetry, band-resight, and dead recovery data on reintroduced individuals, in order to track survival and breeding state transitions. We used studbook-based individual covariates to examine the comparative evidence for and degree of effects of inbreeding, genotype, and genotype quality on post-release survival of reintroduced individuals. We demonstrate implementation of the Bayesian multi-state model, which allows for the integration of imperfect detection, multiple data types, random effects, and individual- and time-dependent covariates. Our results provide only weak evidence for an effect of the quality of an individual‘s genotype in captivity on post-release survival as well as for an effect of inbreeding on post-release survival. We plan to integrate our results into a decision-analytic modeling framework that can explicitly examine tradeoffs between the effects of inbreeding and the effects of genotype and demographic stochasticity on population establishment. |
| Genre: | Article |
| ProdID: | 70038012 |
| Citation Author: | Converse, Sarah J.; Royle, J. Andrew; Urbanek, Richard P. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 572 |
| Citation Issue: | Supplement 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Ornithology |
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| Citation Number Of Pages: | 12 |
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| Citation Phsyical Description: | 12 p. |
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| Citation Publisher: | Springer |
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| Citation Search Results Text: | Bayesian analysis of multi-state data with individual covariates for estimating genetic effects on demography; 2012; Article; Journal; Journal of Ornithology; Converse, Sarah J.; Royle, J. Andrew; Urbanek, Richard P. |
| Citation Start Page: | 561 |
| Citation Volume: | 152 |
| Citation Year: | 2012 |
| Type: | citation/reference |
| Text: | Bayesian analysis of multi-state data with individual covariates for estimating genetic effects on demography; 2012; Article; Journal; Journal of Ornithology; Converse, Sarah J.; Royle, J. Andrew; Urbanek, Richard P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/s10336-011-0695-0 |
| Date Other: | Mon, 16 Apr 2012 00:00 -0500 |
| Publisher: | Springer |
