TY - JOUR
T1 - Geographic structure in the searching behaviour of a specialist parasitoid
T2 - Combining molecular and behavioural approaches
AU - Althoff, D. M.
AU - Thompson, J. N.
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2001
Y1 - 2001
N2 - An increasing number of studies have shown that the traits important to species interactions may differ geographically among populations or groups of populations within a single interacting species. We examined geographic structure in the searching behaviour of a recently discovered parasitoid in the genus Agathis (Hymenoptera: Braconidae) by examining the pattern of population structure obtained from sequence data of mitochondrial DNA cytochrome oxidase I and the pattern of population differentiation in female searching behaviour. Analyses of population structure showed no isolation by distance and suggested long distance dispersal among populations. This pattern is consistent with recent post-glacial expansion of Agathis n. sp. Observations of searching behaviour demonstrated that populations of Agathis n. sp. differed in a subset of the behavioural traits examined and also one morphological trait. These population differences appear to be driven in part by local host plant characteristics, and based on the population structure of Agathis n. sp., have arisen relatively quickly in evolutionary time. This study suggests that the interaction between parasitoids and their host insects may exhibit substantial geographic variation, and studies that focus at the level of single populations or the species-level may be missing much of the evolutionary dynamics of parasitoid-host interactions.
AB - An increasing number of studies have shown that the traits important to species interactions may differ geographically among populations or groups of populations within a single interacting species. We examined geographic structure in the searching behaviour of a recently discovered parasitoid in the genus Agathis (Hymenoptera: Braconidae) by examining the pattern of population structure obtained from sequence data of mitochondrial DNA cytochrome oxidase I and the pattern of population differentiation in female searching behaviour. Analyses of population structure showed no isolation by distance and suggested long distance dispersal among populations. This pattern is consistent with recent post-glacial expansion of Agathis n. sp. Observations of searching behaviour demonstrated that populations of Agathis n. sp. differed in a subset of the behavioural traits examined and also one morphological trait. These population differences appear to be driven in part by local host plant characteristics, and based on the population structure of Agathis n. sp., have arisen relatively quickly in evolutionary time. This study suggests that the interaction between parasitoids and their host insects may exhibit substantial geographic variation, and studies that focus at the level of single populations or the species-level may be missing much of the evolutionary dynamics of parasitoid-host interactions.
KW - Geographic differences
KW - Host location
KW - Parasitoid-host interactions
KW - Population structure
KW - mtDNA phylogeography
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U2 - 10.1046/j.1420-9101.2001.00286.x
DO - 10.1046/j.1420-9101.2001.00286.x
M3 - Article
AN - SCOPUS:0034973434
VL - 14
SP - 406
EP - 417
JO - Journal of Evolutionary Biology
JF - Journal of Evolutionary Biology
SN - 1010-061X
IS - 3
ER -