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Showing 1 - 29 of 29 Journals sorted alphabetically
Acta Histochemica     Hybrid Journal   (Followers: 3)
Annals of Cytology and Pathology     Open Access   (Followers: 1)
Applied Immunohistochemistry & Molecular Morphology     Hybrid Journal   (Followers: 16)
Cell Discovery     Open Access   (Followers: 2)
Comparative Cytogenetics     Open Access   (Followers: 1)
Current Protocols in Cytometry     Hybrid Journal  
Cytogenetic and Genome Research     Full-text available via subscription   (Followers: 2)
Cytokine     Hybrid Journal   (Followers: 6)
Cytokine & Growth Factor Reviews     Hybrid Journal   (Followers: 3)
Cytokine : X     Open Access  
Cytology and Genetics     Hybrid Journal   (Followers: 4)
Cytometry Part A     Hybrid Journal   (Followers: 3)
Cytometry Part B: Clinical Cytometry     Hybrid Journal   (Followers: 4)
Cytopathology     Hybrid Journal   (Followers: 11)
Cytoskeleton     Hybrid Journal   (Followers: 1)
Cytotechnology     Hybrid Journal   (Followers: 10)
Diagnostic Cytopathology     Hybrid Journal   (Followers: 10)
Egyptian Journal of Genetics And Cytology     Open Access  
European Journal of Histochemistry     Open Access   (Followers: 4)
Folia Cryptogamica Estonica     Open Access  
Histochemistry and Cell Biology     Hybrid Journal   (Followers: 6)
Journal of Cytology & Histology     Open Access   (Followers: 5)
Journal of Histochemistry and Cytochemistry     Hybrid Journal   (Followers: 7)
Journal of Histotechnology     Hybrid Journal   (Followers: 2)
Journal of Molecular Histology     Hybrid Journal   (Followers: 5)
Journal of the American Society of Cytopathology     Hybrid Journal   (Followers: 5)
Journal of the History of Biology     Hybrid Journal   (Followers: 5)
Single Cell Biology     Open Access  
Vegetation History and Archaeobotany     Hybrid Journal   (Followers: 4)
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Comparative Cytogenetics
Journal Prestige (SJR): 0.431
Citation Impact (citeScore): 1
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1993-0771 - ISSN (Online) 1993-078X
Published by Pensoft Homepage  [58 journals]
  • First cytogenetic data on Afrotropical lutefishes (Citharinidae) in the
           light of karyotype evolution in Characiformes

    • Abstract: Comparative Cytogenetics 16(2): 143-150
      DOI : 10.3897/compcytogen.v16.i2.79133
      Authors : Sergey A. Simanovsky, Dmitry A. Medvedev, Fekadu Tefera, Alexander S. Golubtsov : The Afrotropical lutefish family Citharinidae (Citharinoidei, Characiformes) comprises three genera with eight species in total. Although Citharinidae have been studied in terms of taxonomy and systematics, no cytogenetic information was available for any representative of the family. Furthermore, only one species out of 116 in Citharinoidei (Distichodus affinis Günther, 1873) has been studied cytogenetically. Here, we report the karyotypes of Citharinus citharus (Geoffroy St. Hilaire, 1809) from West Africa and Citharinus latus Müller et Troschel, 1844 from Northeast Africa. The former has the diploid chromosome number 2n = 40 and the fundamental number FN = 80, while the latter has 2n = 44 and FN = 88. Hence, these karyotypes consist exclusively of bi-armed chromosomes. Such karyotypes were previously found in D. affinis and in many lineages of Neotropical species of another suborder of Characiformes, Characoidei. In contrast, the karyotypes dominated by uni-armed elements are typical for a number of phylogenetically basal lineages of Afrotropical and Neotropical Characoidei. We discuss the importance of our data on Citharinidae for the understanding of the karyotype evolution within the order Characiformes. HTML XML PDF
      PubDate: Tue, 21 Jun 2022 16:04:50 +030
  • Karyotype description and comparative chromosomal mapping of rDNA and
           U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei,
           Gymnotiformes, Sternopygidae)

    • Abstract: Comparative Cytogenetics 16(2): 127-142
      DOI : 10.3897/CompCytogen.v16i2.72190
      Authors : Cristian Andrés Araya-Jaime, Duílio Mazzoni Zerbinato de Andrade Silva, Luís Ricardo Ribeiro da Silva, Cristiano Neves do Nascimento, Claudio Oliveira, Fausto Foresti : The genus Eigenmannia Jordan et Evermann,1896 includes electric fishes endemic to the Neotropical region with extensive karyotype variability and occurrence of different sex chromosome systems, however, cytogenetic studies within this group are restricted to few species. Here, we describe the karyotypes of Eigenmannia limbata (Schreiner et Miranda Ribeiro, 1903) and E. microstoma (Reinhardt, 1852) and the chromosomal locations of 5S and 18S rDNAs (ribosomal RNA genes) and U2 snDNA (small nuclear RNA gene). Among them, 18S rDNA sites were situated in only one chromosomal pair in both species, and co-localized with 5S rDNA in E. microstoma. On the other hand, 5S rDNA and U2 snRNA sites were observed on several chromosomes, with variation in the number of sites between species under study. These two repetitive DNAs were observed co-localized in one chromosomal pair in E. limbata and in four pairs in E. microstoma. Our study shows a new case of association of these two types of repetitive DNA in the genome of Gymnotiformes. HTML XML PDF
      PubDate: Thu, 5 May 2022 11:17:35 +0300
  • A critical review on cytogenetics of Cucurbitaceae with updates on
           Indian taxa

    • Abstract: Comparative Cytogenetics 16(2): 93-125
      DOI : 10.3897/compcytogen.v16.i2.79033
      Authors : Biplab Kumar Bhowmick, Sumita Jha : The cytogenetic relationships in the species of Cucurbitaceae are becoming immensely important to answer questions pertaining to genome evolution. Here, a simplified and updated data resource on cytogenetics of Cucurbitaceae is presented on the basis of foundational parameters (basic, zygotic and gametic chromosome numbers, ploidy, genome size, karyotype) and molecular cytogenetics. We have revised and collated our own findings on seven agriculturally important Indian cucurbit species in a comparative account with the globally published reports. Chromosome count (of around 19% species) shows nearly three-fold differences while genome size (of nearly 5% species) shows 5.84-fold differences across the species. There is no significant correlation between chromosome numbers and nuclear genome sizes. The possible trend of evolution is discussed here based on molecular cytogenetics data, especially the types and distribution of nucleolus organizer regions (NORs). The review supersedes the scopes of general chromosome databases and invites scopes for continuous updates. The offline resource serves as an exclusive toolkit for research and breeding communities across the globe and also opens scope for future establishment of web-database on Cucurbitaceae cytogenetics. HTML XML PDF
      PubDate: Tue, 26 Apr 2022 11:14:11 +030
  • Cytotaxonomic investigations on species of genus Narcissus
           (Amaryllidaceae) from Algeria

    • Abstract: Comparative Cytogenetics 16(1): 55-76
      DOI : 10.3897/compcytogen.v16.i1.78852
      Authors : Naila Chahinez Boukhebache, Nabila Amirouche, Rachid Amirouche : This paper provides new cytotaxonomic data on the genus Narcissus Linnaeus, 1753, in Algeria. Populations of seven taxa, N. tazetta Linnaeus, 1753, N. pachybolbus Durieu, 1847, N. papyraceus Ker Gawler, 1806, N. elegans (Haworth) Spach, 1846, N. serotinus sensu lato Linnaeus, 1753, including N. obsoletus (Haworth) Steudel, 1841, and N. cantabricus De Candolle, 1815, were karyologically investigated through chromosome counting and karyotype parameters. N. tazetta and N. elegans have the same number of chromosomes 2n = 2x = 20 with different karyotype formulas. Karyological and morphological characteristics, confirm the specific status of N. pachybolbus and N. papyraceus, both are diploids with 2n = 22 but differing in asymmetry indices. The morphotypes corresponding to N. serotinus sensu lato show two ploidy levels 2n = 4x = 20 and 2n = 6x = 30 characterized by a yellow corona. Some hexaploid cytotypes have more asymmetric karyotype with predominance of subtelocentric chromosomes. They are distinguished by orange corona and may correspond to N. obsoletus. Other cytotype 2n = 28 of N. serotinus was observed in the North Western biogeographic sectors. N. cantabricus was found to be diploid with 2n = 2x = 14, which is a new diploid report in the southernmost geographic range of this polyploid complex. HTML XML PDF
      PubDate: Tue, 5 Apr 2022 14:32:06 +0300
  • Karyotypic analysis and isolation of four DNA markers of the
           scleractinian coral Favites pentagona (Esper, 1795) (Scleractinia,
           Anthozoa, Cnidaria)

    • Abstract: Comparative Cytogenetics 16(1): 77-92
      DOI : 10.3897/compcytogen.v16.i1.79953
      Authors : Rei Kawakami, Takahiro Taguchi, Joshua Vacarizas, Masumi Ito, Takuma Mezaki, Akira Tominaga, Satoshi Kubota : We performed conventional and molecular cytogenetic studies on the Favites pentagona Esper, 1795, a scleractinian coral mostly found along the west coast of Japan. Karyotype analysis of F. pentagona by G-banding revealed a karyogram containing a homogenously staining region (HSR) on chromosome 10 in more than 50% of the examined metaphase spreads. This HSR consisted of sequences from 18S ribosomal RNA (rRNA) genes, as demonstrated by fluorescence in situ hybridization (FISH) and DNA sequencing. We highlighted the development of four chromosomal FISH markers from repetitive genes such as U2 small nuclear RNA linked to 5S rRNA sequence (U2 snRNA-5S), 18S rRNA, histone H3, and uncharacterized gene FP-9X. The chromosomal locations of the U2 snRNA-5S and 18S RNA were on the terminal end of long arm of chromosomes 2 and 10, respectively, while the histone H3 and the uncharacterized gene were located near the centromeres of chromosomes 1 and 9, respectively. These FISH markers will improve the karyotyping of F. pentagona from mitotic preparations which helps in widening our understanding of coral genetic structure and chromosome organization. In addition, these improvements in karyotyping will provide the basis in constructing of chromosome-level genome assembly for F. pentagona. HTML XML PDF
      PubDate: Tue, 5 Apr 2022 14:31:24 +0300
  • Distribution patterns of rDNA loci in the Schedonorus-Lolium
           complex (Poaceae)

    • Abstract: Comparative Cytogenetics 16(1): 39-54
      DOI : 10.3897/compcytogen.v16.i1.79056
      Authors : Helal Ahmad Ansari, Nicholas Ellison, Alan Vincent Stewart, Warren Mervyn Williams : The Schedonorus-Lolium complex of the subtribe Loliinae (Poaceae) includes several economically important forage and turf grasses. This complex encompasses Lolium Linnaeus, 1753, Festuca Linnaeus, 1753 subgenus Schedonorus (P. Beauvois, 1824) Petermann, 1849 and Micropyropsis Romero Zarco et Cabezudo, 1983. New FISH results of 5S and 18S–26S rDNA sequences are presented for three species and the results are interpreted in a review of distribution patterns of 5S and 18S–26S rDNA sequences among other species in the complex. Micropyropsis tuberosa Romero Zarco et Cabezudo, 1983 (2n = 2x = 14) displayed a distribution pattern of rDNA sequences identical to that of F. pratensis Hudson, 1762, supporting a close phylogenetic relationship at the bottom of the phylogenetic tree. “Lolium multiflorum” Lamarck, 1779 accessions sourced from Morocco showed a different pattern from European L. multiflorum and could be a unique and previously uncharacterised taxon. North African Festuca simensis Hochstetter ex A. Richard, 1851 had a marker pattern consistent with allotetraploidy and uniparental loss of one 18S–26S rDNA locus. This allotetraploid has previously been suggested to have originated from a hybrid with Festuca glaucescens (Festuca arundinacea var. glaucescens Boissier, 1844). However, the distribution patterns of the two rDNA sequences in this allotetraploid do not align with F. glaucescens, suggesting that its origin from this species is unlikely. Furthermore, comparisons with other higher alloploids in the complex indicate that F. simensis was a potential donor of two sub-genomes of allohexaploid Festuca gigantea (Linnaeus) Villars, 1787. In the overall complex, the proximal locations of both rDNA markers were conserved among the diploid species. Two types of synteny of the two markers could, to a considerable extent, distinguish allo- and autogamous Lolium species. The ancestral parentage of the three Festuca allotetraploids has not yet been determined, but all three appear to have been sub-genome donors to the higher allopolypoids of sub-genus Schedonorus. Terminal locations of both the markers were absent from the diploids but were very frequently observed in the polyploids. HTML XML PDF
      PubDate: Thu, 24 Mar 2022 18:15:01 +020
  • Karyotype characteristics and gene COI sequences of Chironomus bonus
           Shilova et Dzhvarsheishvili, 1974 (Diptera, Chironomidae) from the South
           Caucasus (Republic of Georgia, Paravani river)

    • Abstract: Comparative Cytogenetics 16(1): 19-38
      DOI : 10.3897/CompCytogen.v16.i1.79182
      Authors : Mukhamed Kh. Karmokov : HTML XML PDF
      PubDate: Tue, 1 Mar 2022 15:30:22 +0200
  • Comparative cytogenetics on eight Malagasy Mantellinae (Anura,
           Mantellidae) and a synthesis of the karyological data on the subfamily

    • Abstract: Comparative Cytogenetics 16(1): 1-17
      DOI : 10.3897/compcytogen.v16.i1.76260
      Authors : Marcello Mezzasalma, Franco Andreone, Gaetano Odierna, Fabio Maria Guarino, Angelica Crottini : We performed a molecular and cytogenetic analysis on different Mantellinae species and revised the available chromosomal data on this group to provide an updated assessment of its karyological diversity and evolution. Using a fragment of the mitochondrial 16S rRNA, we performed a molecular taxonomic identification of the samples that were used for cytogenetic analyses. A comparative cytogenetic analysis, with Giemsa’s staining, Ag-NOR staining and sequential C-banding + Giemsa + CMA + DAPI was performed on eight species: Gephyromantis sp. Ca19, G. striatus (Vences, Glaw, Andreone, Jesu et Schimmenti, 2002), Mantidactylus (Chonomantis) sp. Ca11, M. (Brygoomantis) alutus (Peracca, 1893), M. (Hylobatrachus) cowanii (Boulenger, 1882), Spinomantis prope aglavei “North” (Methuen et Hewitt, 1913), S. phantasticus (Glaw et Vences, 1997) and S. sp. Ca3. Gephyromantis striatus, M. (Brygoomantis) alutus and Spinomantis prope aglavei “North” have a karyotype of 2n = 24 chromosomes while the other species show 2n = 26 chromosomes. Among the analysed species we detected differences in the number and position of telocentric elements, location of NOR loci (alternatively on the 6th, 7th or 10th pair) and in the distribution of heterochromatin, which shows species-specific patterns. Merging our data with those previously available, we propose a karyotype of 2n = 26 with all biarmed elements and loci of NORs on the 6th chromosome pair as the ancestral state in the whole family Mantellidae. From this putative ancestral condition, a reduction of chromosome number through similar tandem fusions (from 2n = 26 to 2n = 24) occurred independently in Mantidactylus Boulenger, 1895 (subgenus Brygoomantis Dubois, 1992), Spinomantis Dubois, 1992 and Gephyromantis Methuen, 1920. Similarly, a relocation of NORs, from the putative primitive configuration on the 6th chromosome, occurred independently in Gephyromantis, Blommersia Dubois, 1992, Guibemantis Dubois, 1992, Mantella Boulenger, 1882 and Spinomantis. Chromosome inversions of primitive biarmed elements likely generated a variable number of telocentric elements in Mantella nigricans Guibé, 1978 and a different number of taxa of Gephyromantis (subgenera Duboimantis Glaw et Vences, 2006 and Laurentomantis Dubois, 1980) and Mantidactylus (subgenera Brygoomantis, Chonomantis Glaw et Vences, 1994, Hylobatrachus Laurent, 1943 and Ochthomantis Glaw et Vences, 1994). HTML XML PDF
      PubDate: Fri, 11 Feb 2022 16:28:42 +020
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