2020
DOI: 10.4039/tce.2020.55
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How much does the host matter to the parasitoid? Distribution of Eurytoma (Hymenoptera, Chalcidoidea) species amongst two locally co-occurring gall-inducing hosts in the genus Diplolepis (Hymenoptera, Cynipidae)

Abstract: Gall wasps in the cynipid genus Diplolepis Geoffroy (Hymenoptera: Cynipidae) attack various species of native and introduced roses in Canada. Although gall forms are diverse, gall wasps are parasitised by highly concordant complexes of parasitoids and inquilines. Many species of gall wasps attack the same host plants and develop over the same periods in the season, suggesting that opportunistic parasitoids may be exploiting a range of hosts rather than specialising. We sampled larvae of Eurytoma Illiger (Hymen… Show more

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Cited by 3 publications
(5 citation statements)
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“…The assemblage of arthropods present within galls is frequently described as static communities whose composition is essentially invariable at the level of the specific gall system (Askew 1980; Stone et al 2002; Shorthouse 2010). Recent work has improved our understanding of the complexities and variable patterns that emerge in these communities at local scales (Joseph et al 2011; Bannerman et al 2012; MacEwen et al 2020). For example, molecular approaches have demonstrated the presence of morphologically cryptic taxa co-existing within the guilds of gall-inducers, parasitoids, and inquilines present in gall component communities (Zhang et al 2014; Start 2019; MacEwen et al 2020; Ward et al 2020).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The assemblage of arthropods present within galls is frequently described as static communities whose composition is essentially invariable at the level of the specific gall system (Askew 1980; Stone et al 2002; Shorthouse 2010). Recent work has improved our understanding of the complexities and variable patterns that emerge in these communities at local scales (Joseph et al 2011; Bannerman et al 2012; MacEwen et al 2020). For example, molecular approaches have demonstrated the presence of morphologically cryptic taxa co-existing within the guilds of gall-inducers, parasitoids, and inquilines present in gall component communities (Zhang et al 2014; Start 2019; MacEwen et al 2020; Ward et al 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Recent work has improved our understanding of the complexities and variable patterns that emerge in these communities at local scales (Joseph et al 2011; Bannerman et al 2012; MacEwen et al 2020). For example, molecular approaches have demonstrated the presence of morphologically cryptic taxa co-existing within the guilds of gall-inducers, parasitoids, and inquilines present in gall component communities (Zhang et al 2014; Start 2019; MacEwen et al 2020; Ward et al 2020). Morphologically cryptic species are a likely source of undiscovered biodiversity present within a system (Jörger and Schrödl 2013; Struck et al 2018).…”
Section: Introductionmentioning
confidence: 99%
“…Assessing species richness and revealing axes of host specialization for gall parasitoids requires a well-resolved and stable parasitoid taxonomy, which in turn requires an integrative approach. Single or multi-locus approaches for taxon delimitation that use genes such as the mitochondrial loci COI and Cytb have been used extensively to understand gall community diversity (Ács et al, 2010;Davis et al, 2018;Forbes et al, 2016;Gil-Tapetado et al, 2021;Kaartinen et al, 2010;MacEwen et al, 2020;Nicholls et al, 2018;Nicholls et al, 2010;Sheikh et al, 2022;Smith-Freedman et al, 2019;Ward et al, 2020;Weinersmith et al, 2020;Zhang Y.M. et al, 2014;2019a), often in combination with morphological and/or ecological data.…”
Section: Introductionmentioning
confidence: 99%
“…Assessing species richness and revealing axes of host specialization for gall parasitoids requires a well‐resolved and stable parasitoid taxonomy, which in turn requires an integrative approach. Single‐ or multilocus approaches for taxon delimitation that use genes such as the mitochondrial loci COI and Cytb have been used extensively to understand gall community diversity (Ács et al, 2010; Davis et al, 2018; Forbes et al, 2016; Gil‐Tapetado et al, 2021; Kaartinen et al, 2010; MacEwen et al, 2020; Nicholls et al, 2010, 2018; Nicholls et al, 2018; Sheikh et al, 2022; Smith‐Freedman et al, 2019; Ward et al, 2020; Weinersmith et al, 2020; Zhang et al, 2014; Zhang, László, et al, 2019), often in combination with morphological and/or ecological data. However, results from one or a few genes can be limited in resolution, and single‐locus mitochondrial COI barcodes are known to be misleading due to confounding factors such as incomplete lineage sorting and introgression within both gall wasps and their associated parasitoids (Nicholls et al, 2012; Rokas et al, 2003; Zhang et al, 2021).…”
Section: Introductionmentioning
confidence: 99%
“…Assessing species richness and revealing axes of host specialization for gall parasitoids requires a well-resolved and stable parasitoid taxonomy, which in turn requires an integrative approach. Single or multi locus approaches for taxon delimitation that use one or more genes such as the mitochondrial loci COI and Cytb have been used extensively to understand gall community diversity (Ács et al, 2010;Davis et al, 2018;Forbes et al, 2016;Gil-Tapetado et al, 2021;Kaartinen et al, 2010;MacEwen et al, 2020;Nicholls et al, 2018;Nicholls et al, 2010;Sheikh et al, 2021;Smith-Freedman et al, 2019;Ward et al, 2020;Weinersmith et al, 2020;Zhang Y.M. et al, 2014;2019a), often in combination with morphological and/or ecological data.…”
Section: Introductionmentioning
confidence: 99%