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- W2108291322 abstract "The suborder Heteroptera constitutes one of the most important insect groups because most species are plants feeders and cause damage on many plants of economic importance. One of the most important cytogenetic characteristics of Heteroptera is the holokinetic nature of the chromosomes. One particular feature of some species of Pentatomidae is the regular presence of an abnormal meiosis in one testicular lobe (harlequin lobe). From the 28 species cytogenetically analysed from Argentine material, 21 present the diploid number 2n = 14, four species present a reduced number (2n = 12) and another three species possess an increased diploid number (2n = 16); among all these only three present an harlequin lobe. In the present work, a bibliographic review of the chromosome number and sex determining system of 294 species and subspecies belonging to 121 genera within the subfamilies Asopinae, Discocephalinae, Edessinae, Pentatominae, Phyllocephalinae and Podopinae is presented. The male diploid numbers range from six to 27 with a mode in 14 chromosomes; this last diploid number is present in 85% of the species. The sex chromosome determining system is XY/XX except in three species: Macropygium reticulare (Fabricius, 1803), Rhytidolomia senilis (Say, 1832) and Thyanta calceata (Say, 1832) which present derived sex chromosome systems. Furthermore, the cytogenetic relationships with the other families of Pentatomoidea are discussed. Die Untergruppe Heteroptera bildet eine sehr wichtige Insektengruppe, weil die meisten Arten Pflanzenfresser sind und daher schadhaft für viele wirtschaftlich bedeutende Pflanzen. Eine der wichtigsten cytogenetischen Eigenschaften von Heteroptera ist die holokinetische Natur ihrer Chromosomen. Ein Merkmal einiger Pentatomiden-Arten ist das reguläre Vorkommen einer anormalen Meiosis in einem Teil der Hodenlappen (harlequin lobe). Von den 28 cytogenetisch untersuchten Arten (argentinisches Material) weisen 21 die diploide Zahl von 2n = 14 auf, vier eine reduzierte Zahl von 2n = 12 und drei andere haben die größere Zahl von 2n = 16. Von diesen haben nur drei den harlequin lobe. In der vorliegenden Arbeit befassen wir uns mit der bibliographischen Revision der Chromosomenzahlen und des geschlechtsbestimmenden Systems von 294 Arten und Unterarten, die zu 121 Gattungen der Subfamilien Asopinae, Discocephalinae, Edessinae, Pentatominae, Phyllocephalinae und Podopinae gehören. Die Zahlen diploider Männchen liegen zwischen 6 und 27; am häufigsten sind es 14, eine Zahl, die in 85% der Arten vorhanden ist. Das geschlechtsbestimmende System ist XY/XX, außer in drei Arten: M. reticulare (Fabricius, 1803), Rhytidolomia senilis (Say, 1832) und Thyanta calceata (Say, 1832). Außerdem werden die cytogenetischen Beziehungen mit den anderen Familien der Pentatomoidea behandelt." @default.
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- W2108291322 date "2005-08-01" @default.
- W2108291322 modified "2023-10-06" @default.
- W2108291322 title "Cytogenetic studies in Pentatomidae (Heteroptera): A review" @default.
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- W2108291322 doi "https://doi.org/10.1111/j.1439-0469.2005.00312.x" @default.
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