Grabenweger, Giselher, Austrian Agency for Health and Food Safety
Roques, Alain, INRA, UR0633 Zoologie Forestière, Orléans, France
López-Vaamonde, Carlos, INRA, UR0633 Zoologie Forestière, Orléans, France
Published Oct 31, 2011 on Dryad.
Cite this dataset
Hernández-López, Antonio et al. (2011). Data from: Host tracking or cryptic adaptation? Phylogeography of Pediobius saulius (Hymenoptera, Eulophidae), a parasitoid of the highly invasive horse-chestnut leafminer [Dataset]. Dryad. https://doi.org/10.5061/dryad.kd11tj14
Classical biological control is often advocated as a tool for managing invasive species. However, accurate evaluations of parasitoid species complexes and assessment of host-specificity are impeded by the lack of morphological variation. Here we study the possibility of host races/species within the eulophid wasp Pediobius saulius, a pupal generalist parasitoid that parasitize the highly invasive horse-chestnut leaf-mining moth Cameraria ohridella. We analysed the population genetic structure, host associations and phylogeographic patterns of P. saulius in Europe using the COI mitochondrial gene. This marker strongly supports a division into at least five highly differentiated parasitoid complexes, within two of which, clades with differing degrees of host specialization were found: a Balkan clade that mainly (but not only) attacks C. ohridella, and a more generalist European group which attacks many hosts, including C. ohridella. The divergence in COI (up to 7.6%) suggests the existence of cryptic species, although this is neither confirmed by nuclear divergence nor morphology. We do not find evidence of host tracking. The higher parasitism rates observed in the Balkans and the scarcity of the Balkan-Cameraria haplotypes out of the Balkans, open the possibility of using these Balkan haplotypes as biological control agents of C. ohridella elsewhere in Europe.
Aligned CO1 sequences in nexus format.
Aligned 28S-D2 sequences in nexus format. Information on the samples given in the Excel readme file.
Aligned ITS sequences in nexus format. Information on individual samples in the Excel readme file. Samples with no BOLD ID were new individuals.