A comparative analysis of genetic differentiation across six shared willow host species in leaf- and bud-galling sawflies.

ABSTRACT: Genetic divergence and speciation in plant-feeding insects could be driven by contrasting selection pressures imposed by different plant species and taxa. While numerous examples of host-associated differentiation (HAD) have been found, the overall importance of HAD in insect diversification remains unclear, as few studies have investigated its frequency in relation to all speciation events. One promising way to infer the prevalence and repeatability of HAD is to estimate genetic differentiation in multiple insect taxa that use the same set of hosts. To this end, we measured and compared variation in mitochondrial COI and nuclear ITS2 sequences in population samples of leaf-galling Pontania and bud-galling Euura sawflies (Hymenoptera: Tenthredinidae) collected from six Salix species in two

SUBMITTER: Leppanen SA 

PROVIDER: S-EPMC4281154 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature