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Off to new shores: Climate niche expansion in invasive mosquitofish (Gambusia spp.)

  • Aim: Formerly introduced for their presumed value in controlling mosquito-borne diseases, the two mosquitofish Gambusia affinis and G. holbrooki (Poeciliidae) are now among the world's most widespread invasive alien species, negatively impacting aquatic ecosystems around the world. These inconspicuous freshwater fish are, once their presence is noticed, difficult to eradicate. It is, therefore, of utmost importance to assess their geographic potential and to identify their likely ability to persist under novel climatic conditions. Location Global. Methods We build species distribution models using occurrence data from the native and introduced distribution ranges to identify putative niche shifts and further ascertain the areas climatically suitable for the establishment and possible spread of mosquitofish. Results We found significant niche expansions into climatic regions outside their natural climatic conditions, emphasizing the importance of integrating climatic niches of both native and invasive ranges into projections. In particular, there was a marked shift toward tropical regions in Asia and a clear niche shift of European G. holbrooki. This ecological flexibility partly explains the massive success of the two species, and substantially increases the risk for further range expansion. We also showed that the potential for additional expansion resulting from climate change is enormous—especially in Europe. Main conclusions Despite the successful invasion history and ongoing range expansions, many countries still lack proper preventive measures. Thus, we urge policy makers to carefully evaluate the risk both mosquitofish pose to a particular area and to initiate appropriate management strategies.

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Metadaten
Author:Jonas JourdanORCiDGND, Rüdiger RieschORCiD, Sarah CunzeORCiDGND
URN:urn:nbn:de:hebis:30:3-793113
DOI:https://doi.org/10.1002/ece3.8427
ISSN:2045-7758
Parent Title (English):Ecology and evolution
Publisher:John Wiley & Sons, Inc.
Place of publication:[Erscheinungsort nicht ermittelbar]
Document Type:Article
Language:English
Date of Publication (online):2021/12/13
Date of first Publication:2021/12/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2023/10/31
Tag:Gambusia affinis; Gambusia holbrooki; global climate change; invasion risk assessment; invasive fish; potential invasion area; species distribution model
Volume:11
Issue:24
Page Number:32
First Page:18369
Last Page:18400
Note:
Open Access funding enabled and organized by Projekt DEAL. WOA Institution: N/A Blended DEAL: Projekt DEAL.
HeBIS-PPN:516382489
Institutes:Biowissenschaften / Institut für Ökologie, Evolution und Diversität
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International