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  Trophic interactions and consequent impacts of the invasive fish Pseudorasbora parva in a native aquatic foodweb: a field investigation in the UK

Britton, J. R., Davies, G. D., & Harrod, C. (2010). Trophic interactions and consequent impacts of the invasive fish Pseudorasbora parva in a native aquatic foodweb: a field investigation in the UK. Biological Invasions, 12(6), 1533-1542. doi:10.1007/s10530-009-9566-5.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D486-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D487-1
Genre: Journal Article

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Britton_2010.pdf (Publisher version), 296KB
 
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 Creators:
Britton, J. Robert, Author
Davies, Gareth D., Author
Harrod, Chris1, 2, Author              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              
2Department Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445635              

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Free keywords: topmouth gudgeon; Cyprinus carpio; Rutilus rutilus; Scardinius erythrophthalmus; trophic overlap; stable isotope analysis; angling
 Abstract: Introduction of the invasive Asian cyprinid fish Pseudorasbora parva into a 0.3 ha pond in England with a fish assemblage that included Cyprinus carpio, Rutilus rutilus and Scardinius erythrophthalmus resulted in their establishment of a numerically dominant population in only 2 years; density estimates exceeded 60 ind. m(-2) and they comprised > 99% of fish present. Stable isotope analysis (SIA) revealed significant trophic overlap between P. parva, R. rutilus and C. carpio, a shift associated with significantly depressed somatic growth in R. rutilus. Despite these changes, fish community composition remained similar between the ponds. Comparison with SIA values collected from an adjacent pond free of P. parva revealed a simplified food web in P. parva presence, but with an apparent trophic position shift for several fishes, including S. erythrophthalmus which appeared to assimilate energy at a higher trophic level, probably through P. parva consumption. The marked isotopic shifts shown in all taxa in the P. parva invaded pond (C-13-enriched, N-15 depleted) were indicative of a shift to a cyanobacteria-dominated phytoplankton community. These findings provide an increased understanding of the ecological consequences of the ongoing P. parva invasion of European freshwater ecosystems.

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Language(s): eng - English
 Dates: 2010-06
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 478132
DOI: 10.1007/s10530-009-9566-5
Other: 2760/S 39092
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Title: Biological Invasions
  Alternative Title : Biol Invasions
Source Genre: Journal
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Pages: - Volume / Issue: 12 (6) Sequence Number: - Start / End Page: 1533 - 1542 Identifier: ISSN: 1387-3547 (print)
ISSN: 1573-1464 (online)