Data from: Feather corticosterone reveals effect of moulting conditions in the autumn on subsequent reproductive output and survival in an Arctic migratory bird ...
For birds, unpredictable environments during the energetically stressful times of moulting and breeding are expected to have negative fitness effects. Detecting those effects however, might be difficult if individuals modulate their physiology and/or behaviours in ways to minimize short-term fitness...
| Main Authors: | , , , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2014
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.rp30d https://datadryad.org/stash/dataset/doi:10.5061/dryad.rp30d |
| Summary: | For birds, unpredictable environments during the energetically stressful times of moulting and breeding are expected to have negative fitness effects. Detecting those effects however, might be difficult if individuals modulate their physiology and/or behaviours in ways to minimize short-term fitness costs. Corticosterone in feathers (CORTf) is thought to provide information on total baseline and stress-induced CORT levels at moulting and is an integrated measure of hypothalamic–pituitary–adrenal activity during the time feathers are grown. We predicted that CORTf levels in northern common eider females would relate to subsequent body condition, reproductive success and survival, in a population of eiders nesting in the eastern Canadian Arctic during a capricious period marked by annual avian cholera outbreaks. We collected CORTf data from feathers grown during previous moult in autumn and data on phenology of subsequent reproduction and survival for 242 eider females over 5 years. Using path analyses, we ... : Common eider data for Harms et al MS: Feather corticosterone reveals effect of moulting conditions in an Arctic migratory birdThese data were collected from the field from 2007-2011. Column headings are as follows: ID (year plus bird band number); Band (bird band number); year (year eider was captured); CORTf (feather corticosterone in pg/mm); arrival (eider arrival date on breeding colony in Julian days); relArrival (relative arrival date); mass (eider mass in grams); Lay (date first egg was laid); relLay (relative lay date); nest (at least one egg was successfully hatched); Survival (1=eider found dead by end of breeding season, 0= eider that was not found dead during breeding season)Harms et al_Proc B_ final data for CORTf MS.csv ... |
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