Abstract
ABSTRACTTrees of the genusPistaciaserve as obligate hosts for gall-forming aphids (Hemiptera, Aphididae, Fordini). Each aphid species induces a characteristic gall on a singlePistaciahost species. The genusGeoica(Fordini) induce similar spherical closed galls on the lower side of the leaflet’s midvein, on differentPistaciaspecies. Two species ofPistaciatrees that harborGeoicagalls grow naturally in Israel:P.palaestinaandP. atlantica.We analyzed the phylogeny and the genetic structure of theGeoicaspecies complex in Israel, and assessed the genetic differentiation and the level of host plant specificity of the aphids betweenP.atlanticaandP. palaestina. We found that the splitting of the genus betweenP. atlanticaandP. palaestinais estimated to have occurred 24–25 Ma (the Oligocene/Miocene boundary). Five different haplotypes suggesting five different species have been further speciating amongGeoicaspp., galling onP. atlantica, and an additional three species, onP. palaestina.Accession Numbers (COI sequences):MW452548 - Pp-Q-7d-Gamla - Haplotype-VIMW452549 - Pp-Q-10b-Gamla - Haplotype-VIIMW452550 - Pp-A-1a-Mezar - Haplotype-VIIMW452551 - Pp-S-6c-Sasa - Haplotype-VIMW452552 - Pp-New Hermon-2-5 - Haplotype-VIIIMW452553 - Pa-Q-10a-II Gamla - Haplotype-IVMW452554 - Pa-Q-5d Gamla - Haplotype-IIMW452555 - Pa-A-2f Mezar - Haplotype-IVMW452556 - Pa-E-13 Anafa - Haplotype-IIIMW452557 - Pa-K-10a Adolam - Haplotype-IVMW452558 - Pa-K-3a Adolam - Haplotype-IIMW452559 - Pa-N-2a Nizana - Haplotype-IMW452560 - Pa-Z-1-3 Hazeva - Haplotype-IMW452561 - Pa-SL-3-3 Jordan-Sela - Haplotype-V
Publisher
Cold Spring Harbor Laboratory
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