English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/40846
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 | DATACITE
Exportar a otros formatos:


A comparative study of egg mass and clutch size in the Anseriformes

AuthorsFiguerola, Jordi CSIC ORCID ; Green, Andy J. CSIC ORCID
KeywordsClutch mass
Clutch size
Egg size
Sexual dimorphism
Issue DateJan-2006
CitationJ Ornithol (2005)Volume 147, Number 1, 57-68,
AbstractThe factors explaining interspecific differences in clutch investment in precocial birds are poorly understood. We investigated how variations in clutch characteristics are related to environmental factors in a comparative study of 151 extant species of ducks, geese and swans (Anseriformes). Egg mass was negatively related to clutch size in a phylogenetic regression, a relationship that was much stronger when controlling for female mass. Nest placement was related to both egg size and clutch size, with cavity-nesting species laying more but smaller eggs. Egg size was positively correlated with incubation period and with female mass, and also with sexual size dimorphism (i.e. male mass relative to that of the female). Clutch size was not related to female mass. Species with long term pair bonds laid smaller clutches and larger eggs. The size of the breeding range was strongly positively correlated with clutch size and clutch mass, and its inclusion in multivariate models made other biogeographical variables (hemisphere, breeding latitude or insularity) non-significant. The small clutches in insular species appear to be a product of small range size rather than insularity per se. Our results suggest there is an evolutionary trade-off between clutch and egg size, and lend support to Lack’s resource-limitation hypothesis for the waterfowl.
Publisher version (URL)http://www.springerlink.com/content/pp287726642181t6/fulltext.pdf
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
jornith06.doc1,06 MBMicrosoft WordView/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.