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Colonizing islands of water on dry land - on the passive dispersal of fish eggs by birds
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 4494120
Author(s) Hirsch, Philipp Emanuel; N'Guyen, Anouk; Muller, Roxane; Adrian-Kalchhauser, Irene; Burkhardt-Holm, Patricia
Author(s) at UniBasel Holm, Patricia
Hirsch, Philipp
N'Guyen van Chinh, Anouk
Adrian-Kalchhauser, Irene
Muller, Roxane
Year 2018
Title Colonizing islands of water on dry land - on the passive dispersal of fish eggs by birds
Journal Fish and fisheries
Volume 19
Number 3
Pages / Article-Number 502-510
Keywords aquatic invasions, crustacea eggs, propagule, species invasion, vectors
Abstract The vast majority of global freshwater ecosystems are small lakes with less than 100 m 2 surface area. These lakes are often unconnected to other water bodies but frequently host fish populations. Existing explanations for how fish colonize such remote habitats often involve birds as vectors transporting fish eggs as propagules. In this study, we aim to quantify the prevalence of these explanations among relevant societal groups as well as their scientific knowledge basis. We analyzed entries in online blogs and forums and surveyed the opinions of local stakeholders and decision makers using a questionnaire. To collect published scientific knowledge, we conducted a structured literature review. Our results reveal a discrepancy between commonly found beliefs and the empirical knowledge supporting those beliefs: Dispersal of fish eggs by water birds was overall the most frequent explanation online and in the questionnaire. In the scientific literature, however, we found hardly any empirical research on passive fish egg dispersal. We propose research directions for how to close this gap of knowledge and suggest that future empirical studies on passive fish egg dispersal may be inspired by existing work on passive dispersal in aquatic invertebrates. Mitigating the belief‐evidence discrepancy on fish dispersal will be essential to better understand the patterns of fish biodiversity across landscapes, to counteract its losses, and inform management strategies for invasive fish species.
Publisher Wiley
ISSN/ISBN 1467-2960 ; 1467-2979
URL https://onlinelibrary.wiley.com/doi/full/10.1111/faf.12270
edoc-URL https://edoc.unibas.ch/68266/
Full Text on edoc No
Digital Object Identifier DOI 10.1111/faf.12270
ISI-Number WOS:000431990200008
Document type (ISI) Article
 
   

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