Speciation via Differential Host–Plant Use in the Tephritid Fly Tephritis conura

Johannesen, Jes; Diegisser, Thorsten; Seitz, Alfred

doi:10.1007/978-3-642-12425-9_12

Cited by 1 publication

(1 citation statement)

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“…It is yet unclear how common HAD is or which ecological traits explain the occurrence of HAD. This issue is currently being resolved by the growing body of case studies involving HAD (Dres & Mallet, ; Stireman et al., ; Sword et al., ; Vialatte et al., ; Lozier et al., , Magalhaes et al., ; Dorchin et al., ; Peccoud et al., ; Dickey & Medina, , , ; Johannesen et al., ; Barman et al., ; Hartfield & Keightley, ; Medina et al., , ; Simonato et al., ). Eventually, the quantitation of the results of these studies will lead to an estimate of the type and number of systems that are prone to experience HAD.…”

Section: Introductionmentioning

confidence: 99%

Host‐associated differentiation in a pecan and water hickory Aphidomorpha community

Medina

Dickey

Harrison

2017

Entomologia Exp Applicata

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Host‐associated differentiation (HAD) is the formation of genetically distinct, host‐associated populations created and maintained by ecologically mediated reproductive isolation. HAD potentially accounts for species origins in parasites, including herbivorous insects. Although case studies testing the occurrence of HAD are accumulating, it is still unclear how common HAD is and which specific ecological traits explain its occurrence. To address these issues, studies are needed that include negative results (i.e., instances in which parasite populations do not exhibit HAD) and test for HAD across communities (i.e., several parasite species on the same set of host species). In this study, HAD was tested in a community of six species of Aphidomorpha (Hemiptera) that share a host‐plant pair: pecan [Carya illinoinensis (Wangenh.) K.Koch] and water hickory [Carya aquatica (F.Michx) Nutt., both Juglandaceae] trees. All six species are parthenogenetic and three species are endophagous, traits that can exacerbate host‐specific selection. AFLP markers were employed to detect the presence of genetically distinct, host‐associated populations for each insect species. Strict HAD (i.e., the occurrence of genetically distinct pecan‐associated and water hickory‐associated genotypes) was found in Phylloxera notabilis Pergande (Phylloxeridae), Phylloxera devastatrix Pergande, and Monelliopsis pecanis Bissel (Aphididae). Monellia caryella Fitch (Aphididae) displayed a pattern of partial HAD (i.e., the occurrence of only a genetically distinct pecan‐associated genotype). No HAD was found in Melanocallis caryaefoliae Davis (Aphididae) or Phylloxera texana Stoetzel. The pattern of HAD occurrence in the pecan and water hickory Aphidomorpha community indicated that neither parthenogenesis nor endophagy sufficiently explain the occurrence of HAD in this system.

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