Document Detail


Dispersal-related life-history trade-offs in a butterfly metapopulation.
MedLine Citation:
PMID:  16903046     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
1. Recent studies on butterflies have documented apparent evolutionary changes in dispersal rate in response to climate change and habitat change. These studies often assume a trade-off between dispersal rate (or flight capacity) and reproduction, which is the rule in wing-dimorphic species but might not occur equally in wing-monomorphic species such as butterflies. 2. To investigate the relationship between dispersal rate and fecundity in the Glanville fritillary butterfly Melitaea cinxia we recorded lifetime individual movements, matings, ovipositions, and maximal life span in a large (32 x 26 m) population cage in the field. Experimental material was obtained from 20 newly established and 20 old local populations within a large metapopulation in the Aland Islands in Finland. 3. Females of the Glanville fritillary from newly established populations are known to be more dispersive in the field, and in the cage they showed significantly greater mobility, mated earlier, and laid more egg clutches than females from old populations. The dispersive females from new populations exhibited no reduced lifetime fecundity in the cage, but they had a shorter maximal life span than old-population females. 4. These results challenge the dispersal-fecundity trade-off for nonmigratory butterflies but instead suggest a physiological trade-off between high metabolic performance and reduced maximal life span. High metabolic performance may explain high rates of dispersal and oviposition in early life. 5. In fragmented landscapes, an ecological trade-off exists between being more dispersive and hence spending more time in the landscape matrix vs. having more time for reproduction in the habitat. We estimate with a dispersal model parameterized for the Glanville fritillary that the lifetime egg production is 4% smaller on average in the more dispersive butterflies in a representative landscape, with much variation depending on landscape structure in the neighbourhood of the natal patch, from--26 to 45% in the landscape analysed in this paper.
Authors:
Ilkka Hanski; Marjo Saastamoinen; Otso Ovaskainen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of animal ecology     Volume:  75     ISSN:  0021-8790     ISO Abbreviation:  J Anim Ecol     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-08-14     Completed Date:  2007-07-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376574     Medline TA:  J Anim Ecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  91-100     Citation Subset:  IM    
Affiliation:
Department of Biological and Environmental Sciences, P.O. Box 65, Viikinkaari 1, FI-00014 University of Helsinki, Finland. ilkka.hanski@helsinki.fi
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MeSH Terms
Descriptor/Qualifier:
Aging / physiology
Animals
Butterflies / physiology*
Climate*
Ecosystem*
Energy Metabolism / physiology*
Environment
Female
Fertility / physiology*
Finland
Life Cycle Stages / physiology
Male
Oviposition / physiology*
Population Dynamics
Species Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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