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  Temporal genetic structuring of a specialist parasitoid, Lysiphlebus hirticornis Mackauer (Hymenoptera: Braconidae) attacking a specialist aphid on tansy

Nyabuga, F., Loxdale, H., Heckel, D. G., & Weisser, W. (2011). Temporal genetic structuring of a specialist parasitoid, Lysiphlebus hirticornis Mackauer (Hymenoptera: Braconidae) attacking a specialist aphid on tansy. Biological Journal of the Linnean Society, 102(4), 737-749. doi:10.1111/j.1095-8312.2011.01620.x.

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Nyabuga, Franklin1, 2, Author           
Loxdale, Hugh2, Author           
Heckel, David G.2, Author           
Weisser, W.W., Author
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1IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, ou_421900              
2Department of Entomology, Prof. D. G. Heckel, MPI for Chemical Ecology, Max Planck Society, ou_421895              

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 Abstract: In insect species characterized by inbreeding, limited dispersal, and a metapopulation structure, high genetic differentiation and reduced genetic diversity within local populations are expected. Using the model system Lysiphlebus hirticornis Mackauer, a specialist parasitoid of the tansy aphid, Metopeurum fuscoviride Stroyan (Hemiptera: Aphididae), we examined within-site temporal population dynamics and genetics, including molecular variation at the tansy plant level. Aphid-parasitoid dynamics were surveyed and parasitoids sampled from 72 tansy plants at 11 sites in and around Jena, Germany, over one growing season. Thereafter, parasitoid samples were genotyped at 11 polymorphic microsatellite loci. Colonization, extinction, and recolonization events occurred during the season. Allele numbers and identities were highly variable over time. When samples from all sites were pooled, allele number over all loci showed a decreasing trend with time. At the level of sites, temporal changes in genetic diversity were more variable. Analysis of molecular variance revealed that samples at the plant level explained the highest variance compared to at site level. We conclude that the genetic structuring of this insect is very fine grained (i.e. at the tansy plant level) and the temporal genetic diversity is explained by a combination of extinction and recolonization events, as well as inbreeding.

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 Dates: 20112011-03-14
 Publication Status: Issued
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 Identifiers: Other: HEC183
DOI: 10.1111/j.1095-8312.2011.01620.x
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Title: Biological Journal of the Linnean Society
  Abbreviation : Biol. J. Linn. Soc. Lond.
Source Genre: Journal
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Publ. Info: London : Wiley
Pages: - Volume / Issue: 102 (4) Sequence Number: - Start / End Page: 737 - 749 Identifier: ISSN: 0024-4066
CoNE: https://pure.mpg.de/cone/journals/resource/954922646052