Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source-sink dynamics and secondary dispersal to the Mediterranean Sea

Bolte, Sören, Fuentes, V., Haslob, Holger, Huwer, B., Thibault-Botha, D., Angel, D., Galil, B., Javidpour, Jamileh, Moss, A. G. and Reusch, Thorsten B.H. (2013) Population genetics of the invasive ctenophore Mnemiopsis leidyi in Europe reveal source-sink dynamics and secondary dispersal to the Mediterranean Sea Marine Ecology Progress Series, 485 . pp. 25-36. DOI 10.3354/meps10321.

Bolte_S_etalMEPS2013.pdf - Published Version

Download (1091Kb) | Preview
m485p025_supp.pdf - Supplemental Material

Download (171Kb) | Preview

Supplementary data:


Repeated invasions of European waters by the ctenophore Mnemiopsis leidyi offer a unique opportunity to study population dynamics and dispersal in gelatinous zooplankton. Here we followed population establishment in two recently invaded areas, the North and Baltic Sea, and analysed changes in population structure during a 3-yr interval using 7 highly polymorphic microsatellites (representing 191 alleles). A second goal was to reconstruct routes of recent invasive range expansion into the Mediterranean Sea During the study period (2008-2010) populations in North Sea and Western Baltic Sea maintained their allelic composition with virtually unchanged levels of genetic diversity and between-population differentiation. This demonstrates that gene flow between the two regions was limited and indicates successful reproduction in both areas. In contrast, at the eastern distribution limit in the central Baltic (Bornholm Basin) the same measures fluctuated between years and genetic diversity decreased from 2008-2010. In concordance with prior ecological observations, this supports the view that here M. leidyi formed a sink population. In the area of recent range expansion (Mediterranean Sea) we observed high population differentiation for a holoplanktonic species. Among Mediterranean samples collected at sites in Spain, France and Israel pairwise differentiation was between Fst = 0.04-0.16. Despite such differentiation, Bayesian clustering and phylogeographic analysis support the hypothesis that all Mediterranean M. leidyi result from a secondary introduction originating in the Black Sea. Our study contributes to growing evidence that multiple invasions of the same species can vary in their degree of genetic diversity and demonstrates how genetic markers can help to resolve whether gelatinous plankton species form self-sustaining populations.

Document Type: Article
Additional Information: WOS:000321008200003
Keywords: Invasive species, source populations, allelic richness, jellyfish, microsatellites, Baltic Sea, Mediterranean Sea; Alkor; AL324; AL343; AL353
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Evolutionary Ecology of Marine Fishes
Refereed: Yes
DOI etc.: 10.3354/meps10321
ISSN: 0171-8630
Projects: VECTORS
Date Deposited: 22 Apr 2013 05:56
Last Modified: 28 Jun 2017 23:38
URI: http://eprints.uni-kiel.de/id/eprint/21118

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...