Latest Articles from Comparative Cytogenetics Latest 3 Articles from Comparative Cytogenetics https://compcytogen.pensoft.net/ Thu, 28 Mar 2024 23:13:32 +0200 Pensoft FeedCreator https://compcytogen.pensoft.net/i/logo.jpg Latest Articles from Comparative Cytogenetics https://compcytogen.pensoft.net/ Karyotypes diversity in some Iranian Pamphagidae grasshoppers (Orthoptera, Acridoidea, Pamphagidae): new insights on the evolution of the neo-XY sex chromosomes https://compcytogen.pensoft.net/article/53688/ Comparative Cytogenetics 14(4): 549-566

DOI: 10.3897/compcytogen.v14.i4.53688

Authors: Olesya Buleu, Ilyas Jetybayev, Mohsen Mofidi-Neyestanak, Alexander Bugrov

Abstract: 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.

HTML

XML

PDF

]]>
Research Article Tue, 10 Nov 2020 22:57:43 +0200
Chromosomal and molecular evidence for presence of Polyommatus (Agrodiaetus) poseidon (Lepidoptera, Lycaenidae) in Caucasus region https://compcytogen.pensoft.net/article/5020/ Comparative Cytogenetics 9(2): 249-255

DOI: 10.3897/CompCytogen.v9i2.5020

Authors: Vladimir A. Lukhtanov, Valentin V. Tikhonov

Abstract: We show how combination of chromosomal and molecular markers can be applied for proper species identification in Agrodiaetus Hübner, 1822 blue butterflies. Using this approach we provide first evidence for presence of P. (A.) poseidon (Herrich-Schäffer, [1851]) in Georgia.

HTML

XML

PDF

]]>
Short Communication Wed, 3 Jun 2015 11:31:25 +0300
Taxonomic position of several enigmatic Polyommatus (Agrodiaetus) species (Lepidoptera, Lycaenidae) from Central and Eastern Iran: insights from molecular and chromosomal data https://compcytogen.pensoft.net/article/4309/ Comparative Cytogenetics 8(4): 313-322

DOI: 10.3897/CompCytogen.v8i4.8939

Authors: Vladimir Lukhtanov, Nazar Shapoval, Alexander Dantchenko

Abstract: The species-rich subgenus Polyommatus (Agrodiaetus) has become one of the best studied groups of Palearctic blue butterflies (Lepidoptera, Lycaenidae). However, the identity and phylogenetic position of some rare taxa from Iran have remained unclear. An enigmatic, recently described Central Iranian species P. (A.) shirkuhensis ten Hagen et Eckweiler, 2001 has been considered as a taxon closely related either to P. (A.) eckweileri ten Hagen, 1998 or to P. (A.) baltazardi (de Lesse, 1962). P. (A.) baltazardi, in its turn, was treated as a taxon close to Iranian-Pakistani P. (A.) bogra Evans, 1932. Here we used a combination of molecular and chromosomal markers to show that none of these hypotheses was true. Instead, P. (A.) shirkuhensis was recovered as a member of a species group close to P. (A.) cyaneus (Staudinger, 1899). From genetically closest species, P. (A.) kermansis (de Lesse, 1962), P. (A.) cyaneus and P. (A.) sennanensis (de Lesse, 1959), it differs by the wing coloration. From morphologically similar P. (A.) mofidii (de Lesse, 1963) and P. (A.) sorkhensis Eckweiler, 2003, it differs by its chromosome number, n=21. P. (A.) bogra and P. (A.) baltazardi were found to be members of two different species groups and, thus, are not closely related.

HTML

XML

PDF

]]>
Research Article Tue, 9 Dec 2014 00:00:00 +0200