The invasive bighead goby Ponticola kessleri displays large-scale genetic similarities and small-scale genetic differentiation in relation to shipping patterns
| Autor: | Irene Adrian-Kalchhauser, Jost Borcherding, S. Watzlawczyk, Anouk N'Guyen, Patricia Burkhardt-Holm, Jasminca Behrmann-Godel, Philipp E. Hirsch, Svenja Gertzen |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
0301 basic medicine Range (biology) Population Introduced species 010603 evolutionary biology 01 natural sciences DNA Mitochondrial 03 medical and health sciences Rivers biology.animal Germany Genetics Animals education Ecology Evolution Behavior and Systematics Ships Isolation by distance education.field_of_study biology Ecology Goby Vertebrate Ponticola kessleri Sequence Analysis DNA biology.organism_classification Perciformes 030104 developmental biology Genetics Population Phenotype Haplotypes Freshwater fish Introduced Species Animal Distribution Switzerland Microsatellite Repeats |
| Zdroj: | Molecular ecology. 25(9) |
| ISSN: | 1365-294X |
| Popis: | Colonization events, range expansions and species invasions leave genetic signatures in the genomes of invasive organisms and produce intricate special patterns. Predictions have been made as to how those patterns arise, but only very rarely, genetic processes can be monitored in real time during range expansions. In an attempt to change that, we track a very recently established invasive population of a fish species, the bighead goby Ponticola kessleri, with high temporal and spatial resolution through 2 years to identify patterns over time. We then compare Swiss and German samples of bighead goby along the river Rhine using microsatellites, mitochondrial D-loop sequences and geometric morphometrics to investigate geographic patterns. We detect weak temporal and strong geographic patterns in the data, which are inconsistent with isolation by distance and indicate long range transport. In search of an explanation for our observations, we analyse the vector properties and travel patterns of commercial vessels on the river Rhine. We present evidence that freshwater cargo ships and tankers are plausible vectors for larvae of invasive goby species. We also present indications that cargo ships and tankers act as differential vectors for this species. In summary, we present genetic data at unique temporal resolution from a vertebrate invasion front and substantiate the paramount role of commercial shipping in freshwater fish translocations. |
| Databáze: | OpenAIRE |
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