English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/38777
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

Propagule size effects across multiple life-history stages in a marine invertebrate

AuthorsRius, Marc ; Turon, Xavier ; Dias, G. M.; Marshall, D. J.
KeywordsSettlement
Fertilization
Larval size
Propagule performance
Post-metamorphic
Issue Date2010
PublisherWiley-Blackwell
CitationFunctional Ecology 24 : 685-693 (2010)
Abstract1. Mothers must balance the fecundity costs of increasing propagule size with the fitness benefits of increased propagule performance, and the propagule size-performance relationship is crucial for determining this trade-off. 2. While many studies have examined the propagule size-performance relationship in individual life-history stages, very few have examined the relationship between propagule size and performance across multiple life-history stages despite the ubiquity of complex life cycles. 3. We examined the consistency of the propagule size-performance relationship across several life-history stages in the marine invertebrate Microcosmus squamiger (Ascidiacea). 4. Propagule size had effects in some life-history stages and not others: larger propagules hatched sooner as larvae and grew more as juveniles in the field. On the other hand, propagule size had no effect on cell cleavage rates, larval swimming time or post-metamorphic survival in the field. 5. The effects of propagule size on juvenile size were persistent – juveniles that came from larger propagules were still larger than juveniles that came from smaller propagules after 11 weeks in the field. 6. We found no evidence of conflicting selection pressures on propagule size among life-history stages. Rather, in this species at least, the selection on propagule size at both the larval and juvenile stage appeared to favour the production of larger propagules. Nevertheless, the slope of the relationship between propagule size and performance was highly variable among life-history stages. 7. The effects of propagule size across multiple life-history stages are determined by the strength of selection pressures, which can be highly variable in organisms with complex life-cycles.
Description9 Páginas ; 4 Figuras ; 1 Tabla
Publisher version (URL)http://dx.doi.org/10.1111/j.1365-2435.2009.01668.x
URIhttp://hdl.handle.net/10261/38777
DOI10.1111/j.1365-2435.2009.01668.x
ISSN0269-8463
Appears in Collections:(CEAB) Artículos
Files in This Item:
File Description SizeFormat 
Rius et al 2010 Functional Ecology pre-print.pdf243,66 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.