Male karyotype and meiosis in four true bug species belonging to the families Reduviidae, Nabidae, and Miridae (Cimicomorpha) were studied for the first time using Giemsa staining and FISH with 18S ribosomal DNA and telomeric (TTAGG) probes. We found that (Herrich-Schäffer, 1846) and (Poda, 1761) (Reduviidae: Harpactorinae) had 2n = 28 (24 + XXXY), whereas Dohrn, 1862 (Nabidae) and (Gmelin, 1790) (Miridae) had 2n = 34 (32 + XY) and 2n = 32 (30 + XY), respectively. FISH for 18S rDNA revealed hybridization signals on a sex chromosome, the X or the Y, in , on both X and Y chromosomes in , and on two of the four sex chromosomes, Y and one of the Xs, in both species of Hahn, 1834. The results of FISH with telomeric probes support with confidence the absence of the "insect" telomere motif (TTAGG) in the families Nabidae and Miridae and its presence in both species of genus of the Reduviidae, considered as a basal family of Cimicomorpha. Increasing evidence reinforces the hypothesis of the loss of the canonical "insect" telomere motif (TTAGG) by at least four cimicomorphan families, Nabidae, Miridae, Tingidae, and Cimicidae, for which data are currently available.
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http://dx.doi.org/10.3897/CompCytogen.v13i3.36676 | DOI Listing |
Zootaxa
March 2024
Divisin Entomolog Universidad Nacional de la Plata; Museo de La Plata; Paseo del Bosque s/n; B1900FWA; La Plata; Buenos Aires; Argentina; Consejo Nacional de Investigaciones Cientficas y Tcnicas (CONICET); La Plata; Argentina.
The study of the Heteroptera (Hemiptera) fauna of the El Impenetrable National Park, resulted in an inventory composed of: Alydidae (2 spp.), Aradidae (1 sp.), Belostomatidae (5 spp.
View Article and Find Full Text PDFJ Insect Sci
September 2023
Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan.
Myrmecophytes have mutualistic relationships with symbiotic ants. Although myrmecophytic Macaranga (Malpighiales: Euphorbiaceae) species are well protected by aggressive Crematogaster (Hymenoptera: Formicidae) ants, some bug species occur on the myrmecophytes. To clarify the associations of these bugs with the plants and the ants, we studied the food habits of 3 bug species, Pilophorus lambirensis Nakatani et Komatsu, 2013 (Hemiptera: Miridae: Phylinae), Phylinae sp.
View Article and Find Full Text PDFJ Econ Entomol
June 2023
Department of Plant Sciences, University of Wyoming, #3354, 1000 E University Avenue, Laramie, WY 82071, USA.
Timing of insecticide application can impact efficacy, given variation in both weather and development of the crop and its insect pests. Both target and nontarget insects may vary in life stage and abundance at the time of application. In alfalfa Medicago sativa L.
View Article and Find Full Text PDFSci Rep
October 2019
Department of Entomology, Michigan State University, East Lansing, USA.
Conserving threatened organisms requires knowledge of the factors impacting their populations. The Eastern monarch butterfly (Danaus plexippus L.) has declined by as much as 80% in the past two decades and conservation biologists are actively seeking to understand and reverse this decline.
View Article and Find Full Text PDFComp Cytogenet
September 2019
Department of Karyosystematics, Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Universitetskaya nab., 1, Russia Zoological Institute, Russian Academy of Sciences St. Petersburg Russia.
Male karyotype and meiosis in four true bug species belonging to the families Reduviidae, Nabidae, and Miridae (Cimicomorpha) were studied for the first time using Giemsa staining and FISH with 18S ribosomal DNA and telomeric (TTAGG) probes. We found that (Herrich-Schäffer, 1846) and (Poda, 1761) (Reduviidae: Harpactorinae) had 2n = 28 (24 + XXXY), whereas Dohrn, 1862 (Nabidae) and (Gmelin, 1790) (Miridae) had 2n = 34 (32 + XY) and 2n = 32 (30 + XY), respectively. FISH for 18S rDNA revealed hybridization signals on a sex chromosome, the X or the Y, in , on both X and Y chromosomes in , and on two of the four sex chromosomes, Y and one of the Xs, in both species of Hahn, 1834.
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