Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).

Occurrence of inter-species hybrids in natural populations might be evidence of gene flow between species. In the present study we found evidence of gene flow between two sympatric, genetically related scale insect species--the citrus mealybug Planococcus citri (Risso) and the vine mealybug Planococ...

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Autores principales:	Hofit Kol-Maimon, Murad Ghanim, José Carlos Franco, Zvi Mendel
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/872aa0a56922450fac10ce9793536c60
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spelling	oai:doaj.org-article:872aa0a56922450fac10ce9793536c602021-11-18T08:32:59ZEvidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).1932-620310.1371/journal.pone.0088433https://doaj.org/article/872aa0a56922450fac10ce9793536c602014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24523894/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Occurrence of inter-species hybrids in natural populations might be evidence of gene flow between species. In the present study we found evidence of gene flow between two sympatric, genetically related scale insect species--the citrus mealybug Planococcus citri (Risso) and the vine mealybug Planococcus ficus (Signoret). These species can be distinguished by morphological, behavioral, and molecular traits. We employed the sex pheromones of the two respective species to study their different patterns of male attraction. We also used nuclear ITS2 (internal transcribed spacer 2) and mitochondrial COI (Cytochrome c oxidase sub unit 1) DNA sequences to characterize populations of the two species, in order to demonstrate the outcome of a possible gene flow between feral populations of the two species. Our results showed attraction to P. ficus pheromones of all tested populations of P. citri males but not vice versa. Furthermore, ITS2 sequences revealed the presence of 'hybrid females' among P. citri populations but not among those of P. ficus. 'hybrid females' from P. citri populations identified as P. citri females according to COI sequences. We offer two hypotheses for these results. 1) The occurrence of phenotypic and genotypic traits of P. ficus in P. citri populations may be attributed to both ancient and contemporary gene flow between their populations; and 2) we cannot rule out that an ancient sympatric speciation by which P. ficus emerged from P. citri might have led to the present situation of shared traits between these species. In light of these findings we also discuss the origin of the studied species and the importance of the pherotype phenomenon as a tool with which to study genetic relationships between congener scale insects.Hofit Kol-MaimonMurad GhanimJosé Carlos FrancoZvi MendelPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e88433 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hofit Kol-Maimon Murad Ghanim José Carlos Franco Zvi Mendel Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
description	Occurrence of inter-species hybrids in natural populations might be evidence of gene flow between species. In the present study we found evidence of gene flow between two sympatric, genetically related scale insect species--the citrus mealybug Planococcus citri (Risso) and the vine mealybug Planococcus ficus (Signoret). These species can be distinguished by morphological, behavioral, and molecular traits. We employed the sex pheromones of the two respective species to study their different patterns of male attraction. We also used nuclear ITS2 (internal transcribed spacer 2) and mitochondrial COI (Cytochrome c oxidase sub unit 1) DNA sequences to characterize populations of the two species, in order to demonstrate the outcome of a possible gene flow between feral populations of the two species. Our results showed attraction to P. ficus pheromones of all tested populations of P. citri males but not vice versa. Furthermore, ITS2 sequences revealed the presence of 'hybrid females' among P. citri populations but not among those of P. ficus. 'hybrid females' from P. citri populations identified as P. citri females according to COI sequences. We offer two hypotheses for these results. 1) The occurrence of phenotypic and genotypic traits of P. ficus in P. citri populations may be attributed to both ancient and contemporary gene flow between their populations; and 2) we cannot rule out that an ancient sympatric speciation by which P. ficus emerged from P. citri might have led to the present situation of shared traits between these species. In light of these findings we also discuss the origin of the studied species and the importance of the pherotype phenomenon as a tool with which to study genetic relationships between congener scale insects.
format	article
author	Hofit Kol-Maimon Murad Ghanim José Carlos Franco Zvi Mendel
author_facet	Hofit Kol-Maimon Murad Ghanim José Carlos Franco Zvi Mendel
author_sort	Hofit Kol-Maimon
title	Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
title_short	Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
title_full	Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
title_fullStr	Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
title_full_unstemmed	Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).
title_sort	evidence for gene flow between two sympatric mealybug species (insecta; coccoidea; pseudococcidae).
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/872aa0a56922450fac10ce9793536c60
work_keys_str_mv	AT hofitkolmaimon evidenceforgeneflowbetweentwosympatricmealybugspeciesinsectacoccoideapseudococcidae AT muradghanim evidenceforgeneflowbetweentwosympatricmealybugspeciesinsectacoccoideapseudococcidae AT josecarlosfranco evidenceforgeneflowbetweentwosympatricmealybugspeciesinsectacoccoideapseudococcidae AT zvimendel evidenceforgeneflowbetweentwosympatricmealybugspeciesinsectacoccoideapseudococcidae
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Evidence for gene flow between two sympatric mealybug species (Insecta; Coccoidea; Pseudococcidae).

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