The dynamics and the timeline of speciation in the gall-forming aphid Geoica spp. within and among Pistacia host tree species.

Autor: Ben-Shlomo R; Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa-Oranim, Tivon 36006, Israel. Electronic address: ekly@research.haifa.ac.il., Talal S; Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa-Oranim, Tivon 36006, Israel., Inbar M; Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Haifa 3498838, Israel.
Jazyk: angličtina
Zdroj: Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2022 Sep; Vol. 174, pp. 107549. Date of Electronic Publication: 2022 Jun 09.
DOI: 10.1016/j.ympev.2022.107549
Abstrakt: Trees of the genus Pistacia serve as obligate hosts for gall-forming aphids (Hemiptera, Aphididae, Fordini). Each aphid species induces a characteristic gall on a single Pistacia host species. The genus Geoica (Fordini) induce similar spherical closed galls on the lower side of the leaflet's midvein, on different Pistacia species. Two species of Pistacia trees that harbor Geoica galls grow naturally in Israel: P. palaestina and P. atlantica. We analyzed the phylogeny and the genetic structure of the Geoica species complex in Israel, and assessed the genetic differentiation and the level of host plant specificity of the aphids between P. atlantica and P. palaestina. We found that the splitting of the genus between P. atlantica and P. palaestina is estimated to have occurred 24-25 Ma (the Oligocene/Miocene boundary). Five different haplotypes suggesting five different species have been further speciating among Geoica spp., galling on P. atlantica, and an additional three species, on P. palaestina.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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