| Abstract: | In many species, age or time of maturation and survival costs of reproduction may vary substantially within and among populations. We present a capture-mark-recapture model to estimate the latent individual trait distribution of time of maturation (or other irreversible transitions) as well as survival differences associated with the two states (representing costs of reproduction). Maturation can take place at any point in continuous time, and mortality hazard rates for each reproductive state may vary according to continuous functions over time. Although we explicitly model individual heterogeneity in age/time of maturation, we make the simplifying assumption that death hazard rates do not vary among individuals within groups of animals. However, the estimates of the maturation distribution are fairly robust against individual heterogeneity in survival as long as there is no individual level correlation between mortality hazards and latent time of maturation. We apply the model to biweekly capture?recapture data of overwintering field voles (Microtus agrestis) in cyclically fluctuating populations to estimate time of maturation and survival costs of reproduction. Results show that onset of seasonal reproduction is particularly late and survival costs of reproduction are particularly large in declining populations. |
| Genre: | Book chapter |
| ProdID: | 5211447 |
| Citation Author: | Ergon, T.; Yoccoz, N.G.; Nichols, J.D. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | Thomson, David L.; Cooch, Evan G.; Conroy, Michael J. (editors) |
| Citation End Page: | 197 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Modeling demographic processes in marked populations |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | xxiv, 1136 |
| Citation Projection: | |
| Citation Public Comments: | Proceedings of the 2007 EURING Technical Meeting and Workshop held January 14-20, 2007 in Dunedin, New Zealand. OCLC: 213382236 PDF on file: 7050_Ergon.pdf |
| Citation Publisher: | Springer |
| Citation Series: | Environmental and ecological statistics |
| Citation Series Code: | |
| Citation Series Number: | 3 |
| Citation Search Results Text: | Estimating latent time of maturation and survival costs of reproduction in continuous time from capture-recapture data; 2009; Book chapter; 3; Modeling demographic processes in marked populations; Ergon, T.; Yoccoz, N.G.; Nichols, J.D. |
| Citation Start Page: | 173 |
| Citation Volume: | |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Estimating latent time of maturation and survival costs of reproduction in continuous time from capture-recapture data; 2009; Book chapter; 3; Modeling demographic processes in marked populations; Ergon, T.; Yoccoz, N.G.; Nichols, J.D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 9 Jun 2009 09:23 -0500 |
| Publisher: | Springer |
