Document Detail

How reproductive ecology contributes to the spread of a globally invasive fish.
MedLine Citation:
PMID:  21957449     Owner:  NLM     Status:  MEDLINE    
Invasive freshwater fish represent a major threat to biodiversity. Here, we first demonstrate the dramatic, human-mediated range expansion of the Trinidadian guppy (Poecilia reticulata), an invasive fish with a reputation for negatively impacting native freshwater communities. Next, we explore possible mechanisms that might explain successful global establishment of this species. Guppies, along with some other notable invasive fish species such as mosquitofish (Gambusia spp.), have reproductive adaptations to ephemeral habitats that may enable introductions of very small numbers of founders to succeed. The remarkable ability of single pregnant guppies to routinely establish viable populations is demonstrated using a replicated mesocosm set up. In 86% of cases, these populations persisted for two years (the duration of the experiment). Establishment success was independent of founder origin (high and low predation habitats), and there was no loss of behavioural performance amongst mesocosm juveniles. Behavioural "signatures" of the founding locality were, however, evident in mesocosm fish. Our results demonstrate that introductions consisting of a single individual can lead to thriving populations of this invasive fish and suggest that particular caution should be exercised when introducing this species, or other livebearers, to natural water bodies.
Amy E Deacon; Indar W Ramnarine; Anne E Magurran
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-09-19
Journal Detail:
Title:  PloS one     Volume:  6     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2011  
Date Detail:
Created Date:  2011-09-29     Completed Date:  2012-02-03     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e24416     Citation Subset:  IM    
Scottish Oceans Institute, School of Biology, University of St Andrews, Fife, Scotland, United Kingdom.
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MeSH Terms
Animals, Newborn
Ecological and Environmental Phenomena*
Introduced Species / statistics & numerical data*
Poecilia / physiology*
Population Dynamics
Predatory Behavior
Time Factors
Grant Support
250189//European Research Council

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

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