Karyotype,sex determination and male meiosis in three benthic water bugs (Hemiptera: Nepomorpha: Aphelocheiridae) |
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| Authors: | Desislava Stoianova S. Grozeva N. Simov V. Kuznetsova |
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| Affiliation: | 1. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria;2. National Museum of Natural History, Bulgarian Academy of Sciences, Sofia, Bulgaria;3. Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia |
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| Abstract: | We report here the first chromosome numbers for benthic water bugs (Nepomorpha: Aphelocheiridae). All three studied species, Aphelocheirus aestivalis (Fabricius, 1794), A. murcius Nieser and Millán, 1989 and Aphelocheirus sp. from Ebro River (northern Spain), have karyotype 2n = 22 + XX/X(0) and inverted sequence of the X chromosome divisions in male meiosis. The similarity and difference in cytogenetic traits between Aphelocheiridae and other families of Nepomorpha are shortly discussed. |
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| Keywords: | Aphelocheiridae holokinetic chromosomes spermatogenesis Bulgaria Spain |
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