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- W2971366911 abstract "Abstract The interactions between insects and their plant host have been implicated in driving diversification of both players. Early arguments highlighted the role of ecological opportunity, with the idea that insects “escape and radiate” on new hosts, with subsequent hypotheses focusing on the interplay between host shifting and host tracking, coupled with isolation and fusion, in generating diversity. Because it is rarely possible to capture the initial stages of diversification, it is particularly difficult to ascertain the relative roles of geographic isolation versus host shifts in initiating the process. The current study examines genetic diversity between populations and hosts within a single species of endemic Hawaiian planthopper, Nesosydne umbratica (Hemiptera, Delphacidae). Given that the species was known as a host generalist occupying unrelated hosts, Clermontia (Campanulaceae) and Pipturus (Urticaceae), we set out to determine the relative importance of geography and host in structuring populations in the early stages of differentiation on the youngest islands of the Hawaiian chain. Results from extensive exon capture data showed that N. umbratica is highly structured, both by geography, with discrete populations on each volcano, and by host plant, with parallel radiations on Clermontia and Pipturus leading to extensive co‐occurrence. The marked genetic structure suggests that populations can readily become established on novel hosts provided opportunity; subsequent adaptation allows monopolization of the new host. The results support the role of geographic isolation in structuring populations and with host shifts occurring as discrete events that facilitate subsequent parallel geographic range expansion." @default.
- W2971366911 created "2019-09-12" @default.
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- W2971366911 date "2019-10-01" @default.
- W2971366911 modified "2023-10-03" @default.
- W2971366911 title "Host and geography together drive early adaptive radiation of Hawaiian planthoppers" @default.
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- W2971366911 doi "https://doi.org/10.1111/mec.15231" @default.
- W2971366911 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6836872" @default.
- W2971366911 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31484218" @default.
- W2971366911 hasPublicationYear "2019" @default.
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