Karyotypes diversity in some Iranian Pamphagidae grasshoppers (Orthoptera, Acridoidea, Pamphagidae): new insights on the evolution of the neo-XY sex chromosomes
| Autor: | Ilyas Yerkinovich Jetybayev, Olesya Georgievna Buleu, Alexander G. Bugrov, Mohsen Mofidi-Neyestanak |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Insecta ribosomal DNA repeats Subfamily Plant Science Carbotriplurida Iran C-banding 01 natural sciences Pamphagidae grasshoppers Bilateria Pamphagidae Acridoidea neo-sex chromosomes Ecological Informatics Pterygota Stenopelmatoidea C-banding FISH karyotypes neo-sex chromosomes Pamphagidae grasshoppers ribosomal DNA repeats telomeric repeat (TTAGG)n Cephalornis karyotypes Karyotype Locustopsoidea Circumscriptional names Boltonocostidae Biogeography Coelenterata Research Article Biotechnology Arthropoda lcsh:QH426-470 Nephrozoa Protostomia Biology Circumscriptional names of the taxon under 010603 evolutionary biology 03 medical and health sciences Tridactylidea FISH telomeric repeat (TTAGG)n Systematics Centromere Genetics Animalia Molecular Biology Ribosomal DNA Evolutionary Biology Autosome Chromosome biology.organism_classification lcsh:Genetics 030104 developmental biology Notchia Evolutionary biology Ecdysozoa Orthoptera Animal Science and Zoology |
| Zdroj: | Comparative Cytogenetics, Vol 14, Iss 4, Pp 549-566 (2020) Comparative Cytogenetics Comparative Cytogenetics 14(4): 549-566 |
| ISSN: | 1993-078X 1993-0771 |
| Popis: | For the first time, cytogenetic features of grasshoppers from Iran have been studied. In this paper we conducted a comparative cytogenetic analysis of six species from the family Pamphagidae. The species studied belong to subfamilies Thrinchinae Stål, 1876 (Eremopeza bicoloripes (Moritz, 1928), E. saussurei (Uvarov, 1918)) and Pamphaginae (Saxetania paramonovi (Dirsh, 1927), Tropidauchen escalerai Bolívar, 1912, Tropidauchen sp., and Paranothrotes citimus Mistshenko, 1951). We report information about the chromosome number and morphology, C-banding patterns, and localization of ribosomal DNA clusters and telomeric (TTAGG)n repeats. Among these species, only S. paramonovi had an ancestral Pamphagidae karyotype (2n=18+X0♂; FN=19♂). The karyotypes of the remaining species differed from the ancestral karyotypes. The karyotypes of E. bicoloripes and E. saussurei, despite having the same chromosome number (2n=18+X0♂) had certain biarmed chromosomes (FN=20♂ and FN=34♂ respectively). The karyotypes of T. escalerai and Tropidauchen sp. consisted of eight pairs of acrocentric autosomes, one submetacentric neo-X chromosome and one acrocentric neo-Y chromosome in males (2n=16+neo-X neo-Y♂). The karyotype of P. citimus consisted of seven pairs of acrocentric autosomes, submetacentric the neo-X1 and neo-Y and acrocentric the neo-X2 chromosomes (2n=14+neo-X1 neo-X2 neo-Y♂). Comparative analysis of the localization and size of C-positive regions, the position of ribosomal clusters and the telomeric DNA motif in the chromosomes of the species studied, revealed early unknown features of their karyotype evolution. The data obtained has allowed us to hypothesize that the origin and early phase of evolution of the neo-Xneo-Y♂ sex chromosome in the subfamily Pamphaginae, are linked to the Iranian highlands. |
| Databáze: | OpenAIRE |
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