English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/59920
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

Genetic variation in pathogen-induced early hatching of toad embryos

AuthorsGómez-Mestre, Iván ; Touchon, J.C.; Saccoccio, V.L.; Warkentin, K.M.
Issue Date2008
PublisherBlackwell Publishing
CitationJournal of Evolutionary Biology 21: 791- 800 (2008)
AbstractAccelerated hatching is one of few defences available to embryos, and is effective against many egg-stage risks. We present the first analysis of genetic variation in hatching plasticity, examining premature hatching of American toad embryos in response to pathogenic water moulds. We reared eggs from half- and full-sib families in the presence and absence of water mould. Hatching age and hatchling size showed low cross-environment genetic correlations, suggesting that early-induced hatching can evolve largely independently of spontaneous hatching. We found less phenotypic and additive genetic variation for early-induced hatching than spontaneous hatching, and a stronger correlation between egg and induced hatchling sizes. Directional selection by the pathogen may have eroded variation in early-induced hatching, pushing it against the constraint of hatching gland development. Later hatching has a second, muscular component. This pattern of variation may characterize defences based on developmental transitions, although other inducible defences show more variation in induced phenotypes. © 2008 The Authors.
URIhttp://hdl.handle.net/10261/59920
DOI10.1111/j.1420-9101.2008.01509.x
Identifiersdoi: 10.1111/j.1420-9101.2008.01509.x
issn: 1010-061X
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
2008.pdf314,24 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.