Chromosome mapping of a Tc1-like transposon in species of the catfish Ancistrus.

abstract：:The subfamily Harpactorinae is composed of six tribes. Phylogenetic studies bring together some of Harpactorinae tribes, but by and large the data on evolutionary relationships of the subfamily are scarce. Chromosome studies are of great importance for understanding the systematics of different groups of insects. For ...

journal_title：Comparative cytogenetics

authors： Tiepo AN,Pezenti LF,Ferraz Lopes TB,da Silva CR,Dionisio JF,Fernandes JA,Da Rosa R

更新日期：2016-12-09 00:00:00

abstract：:A lectotype is designated for the Tibetan species Deronectesemmerichi Falkenström, 1936 (Currently Boreonectesemmerichi (Falkenström)), and its habitus, as well as the median lobe and parameres of its aedeagus, are figured along with additional comparative material. Material of Boreonectesemmerichi from Sikkim (BMNH) ...

journal_title：Comparative cytogenetics

authors： Angus RB,Angus EM,Jia F,Chen ZN,Zhang Y

更新日期：2015-03-31 00:00:00

abstract：:We describe the karyotype, location of nucleolus-organizing regions (NORs) and heterochromatin composition and distribution in Lepidochitona caprearum (Scacchi, 1836). The examined specimens had 2n=24 chromosomes; the elements of pairs 1-4 were metacentric, subtelocentric those of the fifth pair, telocentric the eleme...

journal_title：Comparative cytogenetics

authors： Petraccioli A,Maio N,Odierna G

更新日期：2012-12-12 00:00:00

abstract：:Drosophila melanogaster Meigen, 1830 has served as a model insect for over a century. Sequencing of the 11 additional Drosophila Fallen, 1823 species marks substantial progress in comparative genomics of this genus. By comparison, practically nothing is known about the genome size or genome sequences of parasitic wasp...

journal_title：Comparative cytogenetics

authors： Gokhman VE,Johnston JS,Small C,Rajwani R,Hanrahan SJ,Govind S

更新日期：2011-08-24 00:00:00

abstract：:Stingless bees are distributed widely in the tropics, where they are major pollinators of several plant species. In this study, the karyotype of Meliponaquinquefasciata Lepeletier, 1836 was analysed, with emphasis on the presence of B chromosomes. Post-defecating larvae were analysed using Giemsa staining, the C-bandi...

journal_title：Comparative cytogenetics

authors： Silva AA,Rocha MP,Ompolo SDG,Campos LAO,Tavares MG

更新日期：2018-11-09 00:00:00

abstract：:The genus Pseudophoxinus Bleeker, 1860 is found in a wide range of habitats in central Anatolia, but it is not well known from a cytogenetic aspect. In this study the first karyotypic description of the spring minnows Pseudophoxinuscrassus (Ladiges, 1960) and Pseudophoxinushittitorum Freyhof & Özulug, 2010 by means of...

journal_title：Comparative cytogenetics

authors： Unal S,Gaffaroğlu M,Ayata MK,Yüksel E

更新日期：2014-10-31 00:00:00

abstract：:Chromosome counts and karyotype characterization have proved to be important features of a genome. Chromosome changes during the diversification of ants might play an important role, given the diversity and success of Formicidae. Comparative karyotype analyses on ants have enriched and helped ant systematics. Among le...

journal_title：Comparative cytogenetics

authors： Pereira TTP,Dos Reis ACCC,Cardoso DC,Cristiano MP

更新日期：2018-01-09 00:00:00

abstract：:This article provides an overview of research on chromatin diminution (CD) in copepods. The phenomenology, mechanisms and biological role of CD are discussed. A model of CD as an alternative means of regulating cell differentiation is presented. While the vast majority of eukaryotes inactivate genes that are no longer...

journal_title：Comparative cytogenetics

authors： Grishanin A

更新日期：2014-01-09 00:00:00

abstract：:Ninety individuals of the characid fish Astyanax fasciatus (Cuvier, 1819) were collected at Água da Madalena stream (Botucatu, São Paulo, Brazil) and analyzed for diploid chromosome number 2n and karyotype composition as well as for the chromosomal location of the 5S and 18S ribosomal DNA (rDNA). Whereas no chromosome...

journal_title：Comparative cytogenetics

authors： Ferreira-Neto M,Artoni RF,Vicari MR,Moreira-Filho O,Camacho JP,Bakkali M,de Oliveira C,Foresti F

更新日期：2012-01-24 00:00:00

abstract：:The elephantfish family Mormyridae is the most diverse lineage of the primitive teleostean clade Osteoglossomorpha distributed in inland waters of all continents except Antarctica and Europe. The family Mormyridae is endemic to Africa and includes 22 genera and almost 230 species. The evolutionary radiation of mormyri...

journal_title：Comparative cytogenetics

authors： Simanovsky S,Medvedev D,Tefera F,Golubtsov A

更新日期：2020-08-19 00:00:00

abstract：:Chromosome morphometry and nuclear DNA content are useful data for cytotaxonomy and to understand the evolutionary history of different taxa. For the genus Bromus Linnaeus, 1753, distinct ploidy levels have been reported, occurring from diploid to duodecaploid species. The geographic distribution of Bromus species has...

journal_title：Comparative cytogenetics

authors： Artico LL,Mazzocato AC,Ferreira JL,Carvalho CR,Clarindo WR

更新日期：2017-04-07 00:00:00

abstract：:Cytogenetic features of the hangingfly Bittacus sinicus Issiki, 1931 were investigated for the first time using C-banding and DAPI (4',6-diamidino-2-phenylindole) staining. The karyotype analyses show that the male B. sinicus possesses the lowest chromosome number (2n = 15) ever observed in Mecoptera, and an almost sy...

journal_title：Comparative cytogenetics

authors： Miao Y,Hua BZ

更新日期：2020-07-30 00:00:00

abstract：:The ancient insect order Odonata is divided into three suborders: Anisoptera and Zygoptera with approximately 3000 species worldwide each, and Anisozygoptera with only four extant species in the relict family Epiophlebiidae. An updated list of Odonata species studied regarding chromosome number, sex chromosome mechani...

journal_title：Comparative cytogenetics

authors： Kuznetsova VG,Golub NV

更新日期：2020-10-22 00:00:00

abstract：:An extreme example of nonrandom rearrangements, especially inversion breaks, is described in the polytene chromosomes of the black fly Simulium bergi Rubtsov, 1956 from Armenia and Turkey. A total of 48 rearrangements was discovered, relative to the standard banding sequence for the subgenus Simulium Latreille, 1802. ...

journal_title：Comparative cytogenetics

authors： Adler PH,Yildirim A,Onder Z,Tasci GT,Duzlu O,Arslan MO,Ciloglu A,Sari B,Parmaksizoglu N,Inci A

更新日期：2016-06-30 00:00:00

abstract：:The B chromosome in the hylid Hypsiboas albopunctatus (2n = 22 + B) is small, almost entirely composed of C-positive heterochromatin, and does not pair with any chromosome of the A complement. B probe, obtained by microdissection and DOP-PCR amplification, was used to search for homology between the B and regular chro...

journal_title：Comparative cytogenetics

authors： Gruber SL,Diniz D,Sobrinho-Scudeler PE,Fausto Foresti,Haddad CF,Kasahara S

更新日期：2014-08-08 00:00:00

abstract：:Brazilian fish cytogenetics started as early as the seventies in three pioneering research groups, located at the Universidade Estadual Paulista (UNESP, Botucatu, SP), Universidade Federal de São Carlos (UFSCar, São Carlos, SP) and Universidade de São Paulo (USP, São Paulo, SP). Investigations that have been conducted...

journal_title：Comparative cytogenetics

authors： Bertollo LAC,Cioffi MB,Galetti PM Jr,Filho OM

更新日期：2017-10-20 00:00:00

abstract：:The genomes of five Agropyron Gaertner, 1770 species were characterized using all potential di- or trinucleotide simple sequence repeat (SSR) motifs and four satellite DNA repeats as fluorescence in situ hybridization (FISH) probes. The sites of 5S and 45S rDNA were relatively conserved among the diploid and tetraploi...

journal_title：Comparative cytogenetics

authors： Zhao Y,Xie J,Dou Q,Wang J,Zhang Z

更新日期：2017-08-03 00:00:00

abstract：:The fluorescent in situ hybridization (FISH) technique has been applied to somatic chromosomes in the medicinally important species, Bunium persicum, to elucidate its karyotypes. The bicolour FISH technique involving 18S-5.8S-26S and 5S ribosomal RNA genes as probes was used to assign physical localization and measure...

journal_title：Comparative cytogenetics

authors： Chahota RK,Mukai Y,Chaudhary HK,Kishore N,Sharma TR

更新日期：2011-11-09 00:00:00

abstract：:Agave Linnaeus, 1753 is endemic of America and is considered one of the most important crops in Mexico due to its key role in the country's economy. Cytogenetic analysis was carried out in Agave tequilana Weber, 1902 'Azul', Agave cupreata Trelease et Berger, 1915 and Agave angustifolia Haworth, 1812. The analysis sho...

journal_title：Comparative cytogenetics

authors： Gomez-Rodriguez VM,Rodriguez-Garay B,Palomino G,Martínez J,Barba-Gonzalez R

更新日期：2013-08-12 00:00:00

abstract：:Previous cytogenetic analyses in Trypoxylon Latreille, 1796 have been basically restricted to C-banding. In the present study, base-specific CMA3 and DAPI fluorochrome staining were used to characterize the constitutive heterochromatin in three Trypoxylon species. The heterochromatin was GC-rich in all the species stu...

journal_title：Comparative cytogenetics

authors： Menezes RS,Carvalho AF,Silva JG,Costa MA

更新日期：2011-07-01 00:00:00

abstract：:Phaneropterinae is the largest subfamily of Tettigoniidae, distributed across the globe. There are few cytogenetic studies regarding this group, as in the case of the genus group Aniarae, which represents only two karyotyped species. The current study aims to analyze cytogenetically three species of Hyperophora Brunne...

journal_title：Comparative cytogenetics

authors： Cansanção Silva B,Henrique Bonfim Souza L,Chamorro-Rengifo J,Araujo D

更新日期：2019-04-02 00:00:00

abstract：:Setaria Beauvois, 1812 is a genus of economically important forage species, including Setaria italica (Linnaeus, 1753) Beauvois, 1812 and Setaria viridis (Linnaeus, 1753) Beauvois, 1812, closely related species and considered as model systems for studies of C4 plants. However, complications and uncertainties related t...

journal_title：Comparative cytogenetics

authors： Nani TF,Cenzi G,Pereira DL,Davide LC,Techio VH

更新日期：2015-10-07 00:00:00

abstract：:In the present study, the chromosomes numbers were confirmed, 2n = 34 for Amaranthus cruentus Linnaeus, 1759, and 2n = 32 for Amaranthus hypochondriacus Linnaeus, 1753, Amaranthus mantegazzianus Passer, 1864, and Amaranthus caudatus Linnaeus, 1753. The distribution and variability of constitutive heterochromatin were ...

journal_title：Comparative cytogenetics

authors： Bonasora MG,Poggio L,Greizerstein EJ

更新日期：2013-03-26 00:00:00

abstract：:Chromosome morphometry and nuclear DNA content are useful data for cytotaxonomy and for understanding the evolutionary history of different taxa. However, the chromosome number is the only karyotype aspect reported for the species of Dorstenia so far. In this study, the nuclear genome size of Dorstenia arifolia (Lamar...

journal_title：Comparative cytogenetics

authors： Amaral-Silva PM,Clarindo WR,Carrijo TT,Carvalho CR,Praça-Fontes MM

更新日期：2016-01-22 00:00:00

abstract：:Parallel trends of chromosomal evolution in Aphidococca are discussed, based on the catalogue of chromosomal numbers and genetic systems of scale insects by Gavrilov (2007) and the new catalogue for aphids provided in the present paper. To date chromosome numbers have been reported for 482 species of scale insects and...

journal_title：Comparative cytogenetics

authors： Gavrilov-Zimin IA,Stekolshchikov AV,Gautam DC

更新日期：2015-07-09 00:00:00

abstract：:The centromere is a chromosomal region where the kinetochore is formed, which is the attachment point of spindle fibers. Thus, it is responsible for the correct chromosome segregation during cell division. Telomeres protect chromosome ends against enzymatic degradation and fusions, and localize chromosomes in the cell...

journal_title：Comparative cytogenetics

authors： Achrem M,Szućko I,Kalinka A

更新日期：2020-07-07 00:00:00

abstract：:A new monotypic genus and species, Komodesia circuliplurimagen. et sp. n., from Flores Is. (Indonesia) and the new species, Antonina diversiglandulosasp. n., from Southern Thailand are described and illustrated. Chromosomes of these species and also the ones of Antonina purpurea Signoret, 1872 and Antonina thaiensis T...

journal_title：Comparative cytogenetics

authors： Gavrilov-Zimin IA

更新日期：2016-11-04 00:00:00

abstract：:Next-generation sequencing data analysis on Triatoma infestans Klug, 1834 (Heteroptera, Cimicomorpha, Reduviidae) revealed the presence of the ancestral insect (TTAGG)n telomeric motif in its genome. Fluorescence in situ hybridization confirms that chromosomes bear this telomeric sequence in their chromosomal ends. Fu...

journal_title：Comparative cytogenetics

authors： Pita S,Panzera F,Mora P,Vela J,Palomeque T,Lorite P

更新日期：2016-09-13 00:00:00

abstract：:Valeriana jatamansi, a medicinally important species of the family Valerianaceae, has been cytologically studied in different geographical areas of North-Western Himalayan region of India. The tetraploid cytotype with chromosome numbers 2n=32 is in conformity with the earlier reports of the species from different part...

journal_title：Comparative cytogenetics

authors： Rani S,Sharma TR,Kapila R,Chahota RK

更新日期：2015-08-07 00:00:00

abstract：:Plantago lagopus is a diploid (2n = 2x =12) weed belonging to family Plantaginaceae. We reported a novel B chromosome in this species composed of 5S and 45S ribosomal DNA and other repetitive elements. In the present work, presence of B chromosome(s) was confirmed through FISH on root tip and pollen mother cells. Seve...

journal_title：Comparative cytogenetics

authors： Dhar MK,Kour G,Kaul S

更新日期：2017-05-22 00:00:00