Estimates of sex- and age-class-specific survival probabilities for a southern Great Barrier Reef green sea turtle population

Chaloupka, Milani and Limpus, Colin (2005) Estimates of sex- and age-class-specific survival probabilities for a southern Great Barrier Reef green sea turtle population. Marine Biology, 146 6: 1251-1261. doi:10.1007/s00227-004-1512-6


Author Chaloupka, Milani
Limpus, Colin
Title Estimates of sex- and age-class-specific survival probabilities for a southern Great Barrier Reef green sea turtle population
Journal name Marine Biology   Check publisher's open access policy
ISSN 0025-3162
1432-1793
Publication date 2005-04
Sub-type Article (original research)
DOI 10.1007/s00227-004-1512-6
Volume 146
Issue 6
Start page 1251
End page 1261
Total pages 11
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2005
Language eng
Subject C1
0602 Ecology
Abstract Sex- and age-class-specific survival probabilities of a southern Great Barrier Reef green sea turtle population were estimated using a capture - mark - recapture (CMR) study and a Cormack - Jolly - Seber (CJS) modelling approach. The CMR history profiles for 954 individual turtles tagged over a 9-year period ( 1984 - 1992) were classified into three age classes ( adult, subadult, juvenile) based on somatic growth and reproductive traits. Reduced-parameter CJS models, accounting for constant survival and time-specific recapture, fitted best for all age classes. There were no significant sex-specific differences in either survival or recapture probabilities for any age class. Mean annual adult survival was estimated at 0.9482 (95% CI: 0.92 - 0.98) and was significantly higher than survival for either subadults or juveniles. Mean annual subadult survival was 0.8474 ( 95% CI: 0.79 - 0.91), which was not significantly different from mean annual juvenile survival estimated at 0.8804 ( 95% CI: 0.84 - 0.93). The time-specific adult recapture probabilities were a function of sampling effort but this was not the case for either juveniles or subadults. The sampling effort effect was accounted for explicitly in the estimation of adult survival and recapture probabilities. These are the first comprehensive sex- and age-class-specific survival and recapture probability estimates for a green sea turtle population derived from a long-term CMR program.
Keyword Marine & freshwater biology
Capture-recapture data
Chelonia-mydas
Testing hypotheses
Marked animals
Life-history
Growth
Rates
Metapopulation
Dynamics
Patterns
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2006 Higher Education Research Data Collection
ERA 2012 Admin Only
Centre for Marine Studies Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 30 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 05:48:56 EST