Advanced

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

Nyabuga, Franklin LU ; Loxdale, Hugh D; Heckel, David G and Weisser, Wolfgang W (2011) In Biological Journal of the Linnean Society 102. p.737-749
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
alleles – diversity – gene flow – insects – metapopulation – Metopeurum fuscoviride – microsatellites – population dynamics – spatial genetics – Tanacetum vulgare
in
Biological Journal of the Linnean Society
volume
102
pages
737 - 749
publisher
Linnean Society of London
ISSN
0024-4066
language
English
LU publication?
no
id
3c4993d1-dbc7-405d-a456-fddf13da3fd6 (old id 3954472)
date added to LUP
2013-07-23 16:27:35
date last changed
2016-04-16 08:39:45
@misc{3c4993d1-dbc7-405d-a456-fddf13da3fd6,
  abstract     = {In insect species characterized by inbreeding, limited dispersal, and a metapopulation structure, high genetic<br/><br>
differentiation and reduced genetic diversity within local populations are expected. Using the model system<br/><br>
Lysiphlebus hirticornis Mackauer, a specialist parasitoid of the tansy aphid, Metopeurum fuscoviride Stroyan<br/><br>
(Hemiptera: Aphididae), we examined within-site temporal population dynamics and genetics, including molecular<br/><br>
variation at the tansy plant level. Aphid-parasitoid dynamics were surveyed and parasitoids sampled from 72 tansy<br/><br>
plants at 11 sites in and around Jena, Germany, over one growing season. Thereafter, parasitoid samples were<br/><br>
genotyped at 11 polymorphic microsatellite loci. Colonization, extinction, and recolonization events occurred during<br/><br>
the season. Allele numbers and identities were highly variable over time. When samples from all sites were pooled,<br/><br>
allele number over all loci showed a decreasing trend with time. At the level of sites, temporal changes in genetic<br/><br>
diversity were more variable. Analysis of molecular variance revealed that samples at the plant level explained the<br/><br>
highest variance compared to at site level. We conclude that the genetic structuring of this insect is very fine<br/><br>
grained (i.e. at the tansy plant level) and the temporal genetic diversity is explained by a combination of extinction<br/><br>
and recolonization events, as well as inbreeding.},
  author       = {Nyabuga, Franklin and Loxdale, Hugh D and Heckel, David G and Weisser, Wolfgang W},
  issn         = {0024-4066},
  keyword      = {alleles – diversity – gene flow – insects – metapopulation – Metopeurum fuscoviride – microsatellites – population dynamics – spatial genetics – Tanacetum vulgare},
  language     = {eng},
  pages        = {737--749},
  publisher    = {ARRAY(0x92ed6b8)},
  series       = {Biological Journal of the Linnean Society},
  title        = {Temporal genetic structuring of a specialist parasitoid, <i>Lysiphlebus hirticornis</i> Mackauer (Hymenoptera: Braconidae) attacking a specialist aphid on tansy},
  volume       = {102},
  year         = {2011},
}