English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/95345
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Parental body condition does not correlate with offspring sex ratio in Cory's Shearwaters

AuthorsGenovart, Meritxell ; Oro, Daniel ; Forero, Manuela G. ; Igual, José Manuel ; González-Solís, Jacob; Ruiz, Xavier
Issue Date2005
PublisherCooper Ornithological Society
CitationCondor 107(1): 161-167 (2005)
AbstractWe analyzed offspring sex ratio variation in Mediterranean Cory's Shearwater (Calonectris d. diomeded) during two consecutive breeding seasons in two colonies. We test for differential breeding conditions between years and colonies looking at several breeding parameters and parental condition. We then explored the relationship between offspring sex ratio and parental condition and breeding parameters. This species is sexually dimorphic with males larger and heavier than females; consequently we expected differential parental cost in rearing sexes, or a greater sensitivity of male chicks to adverse conditions, which may lead to biased sex ratios. Chicks were sexed molecularly by the amplification of the CHD genes. Offspring sex ratio did not differ from parity, either at hatching or fledging, regardless of the colony or year. However, parental body condition and breeding parameters such as egg size and breeding success were different between years and colonies. Nevertheless, neither nestling mortality nor body condition at fledging varied between years or colonies, suggesting that male and female chicks were probably not differentially affected by variability in breeding conditions.
Publisher version (URL)http://dx.doi.org/10.1650/7576
URIhttp://hdl.handle.net/10261/95345
DOI10.1650/7576
Identifiersdoi: 10.1650/7576
issn: 0010-5422
e-issn: 1938-5129
Appears in Collections:(IMEDEA) Artículos
Files in This Item:
File Description SizeFormat 
Genovart-Condor-2005-v107-p161-7576.pdf566,2 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.