Laying Date is a Plastic and Repeatable Trait in a Population of Blue TitsCyanistes caeruleus
| Autor: | Jack Thorley, Alexa M. Lord |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
education.field_of_study
Reproductive success biology Ecology media_common.quotation_subject Population Cyanistes Insectivore Heritability biology.organism_classification Abundance (ecology) Trait Animal Science and Zoology Reproduction education Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Ardea. 103:69-78 |
| ISSN: | 0373-2266 |
| DOI: | 10.5253/arde.v103i1.a7 |
| Popis: | Temperature can have a profound influence on the optimal laying date of insectivorous passerines by affecting the timing of peaks in spring food abundance. If individuals do not synchronise their reproduction with respect to this food peak, it can have detrimental impacts on their reproductive success relative to well-matched breeders. In a population of Blue Tits studied for over a decade, we find that large between-year variation in the onset of laying is tightly coupled to pre-breeding spring temperatures, and that this population-level advancement in laying date in warmer springs can be completely accounted for by individual plasticity. Notwithstanding substantial plasticity within individuals across years, laying date is highly repeatable, with certain individuals consistently early or late. The substantial repeatability appears underlain by heritable variation for relative laying date (h2 = 0.30 +- 0.18 (SE), although this estimate has large standard error and is not significant. This makes assessme... |
| Databáze: | OpenAIRE |
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