比较细胞遗传学是一本同行评议、开放获取、快速在线期刊，旨在加速植物和动物细胞遗传学、核系统学和分子系统学的各个方面的研究。所有发表的论文都可以免费复制、下载、打印和分发为读者。因此，鼓励作者将已发表论文的 PDF 文件张贴在其主页或其他地方，以加快分发速度。颜色不收费。

Comparative Cytogenetics is a peer-reviewed, open-access journal aimed at accelerating research in various aspects of plant and animal cytogenetics, nuclear systematics, and molecular systematics. All published papers can be freely copied, downloaded, printed, and distributed to readers. Authors are encouraged to post the PDF files of their published papers on their personal websites or elsewhere to expedite dissemination. There are no charges for color printing.

《Comparative Cytogenetics》是一本经过同行评审的开放获取期刊，旨在加速植物和动物细胞遗传学、核系统学和分子系统学等领域的研究。所有发表的论文均可免费复制、下载、打印和分发。因此，鼓励作者将已发表论文的PDF文件上传至个人主页或其他平台，以加快传播速度。期刊不收取颜色印刷费用。

Comparative Cytogenetics

To identify nucleolus organizing regions (NORs), fluorescence

Vladimir E Gokhman

Valentina G Kuznetsova

Boris A Anokhin

Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update

叶蜂总科和瘿蜂总科（膜翅目）中rDNA簇的数量和位置：最新研究进展

Birds are one of the most diverse groups among terrestrial vertebrates. They evolved from theropod dinosaurs, are closely related to the sauropsid group and separated from crocodiles about 240 million years ago. According to the IUCN, 12% of bird populations are threatened with potential extinction. Classical cytogenetics remains a powerful tool for comparing bird genomes and plays a crucial role in the preservation populations of endangered species. It thus makes it possible to detect chromosomal abnormalities responsible for early embryonic mortalities. Thus, in this work, we have provided new information on part of the evolutionary history by analysing high-resolution GTG-banded chromosomes to detect inter- and intrachromosomal rearrangements in six species. Indeed, the first eight autosomal pairs and the sex chromosomes of the domestic fowl Gallus gallus domesticus Linnaeus, 1758 were compared with five species, four of which represent the order Galliformes (Common and Japanese quail, Gambras and Chukar partridge) and one Otidiformes species (Houbara bustard). Our findings suggest a high degree of conservation of the analysed ancestral chromosomes of the four Galliformes species, with the exception of (double, terminal, para and pericentric) inversions, deletion and the formation of neocentromeres (1, 2, 4, 7, 8, Z and W chromosomes). In addition to the detected rearrangements, reorganisation of the Houbara bustard chromosomes mainly included fusions and fissions involving both macro- and microchromosomes (especially on 2, 4 and Z chromosomes). We also found interchromosomal rearrangements involving shared microchromosomes (10, 11, 13, 14 and 19) between the two analysed avian orders. These rearrangements confirm that the structure of avian karyotypes will be more conserved at the interchromosomal but not at intrachromosomal scale. The appearance ofa small number of inter- and intrachromosomal rearrangements that occurred during evolution suggests a high degree of conservatism of genome organisation in these six species studied. A summary diagram of the rearrangements detected in this study is proposed to explain the chronology of the appearance of various evolutionary events starting from the ancestral karyotype.

Yasmine Kartout-Benmessaoud

Siham Ouchia-Benissad

Leila Mahiddine-Aoudjit

Kafia Ladjali-Mohammedi

Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool

强调五种雉形目物种（家鸡、普通和日本鹌鹑、巴巴里和鹧鸪）及濒危的鸨形目物种——波斑鸨的染色体重排：带型细胞遗传学是一种强有力的工具

The karyotype of Pseudapanteles dignus (Muesebeck, 1938), an important parasitoid of a serious tomato pest Phthorimaea (= Tuta ) absoluta Meyrick, 1917 (Lepidoptera, Gelechiidae), in the Neotropics and adjacent regions, was studied for the first time using morphometric analysis and several techniques of differential chromosome staining, i.e., C-banding and staining with base-specific fluorochromes, together with fluorescence in situ hybridization (FISH) with an 18S rDNA probe. We found n = 7 and 2n = 14 in P. dignus , with seven metacentric chromosomes of similar size in the haploid set. C-banding revealed various C-positive bands, either centromeric or interstitial, on most chromosomes. Both AT-specific and GC-specific fluorochromes, 4’6-diamidino-2-phenylindole (DAPI) and chromomycin A 3 (CMA 3 ) respectively, showed uniform staining of chromosomes. FISH visualized a single subterminal rDNA site on a medium-sized metacentric. A brief review of known chromosome sets of the subfamily Microgastrinae (Braconidae) is given; certain features of karyotype evolution of this group are discussed.

Vladimir E. Gokhman

María Gabriela Luna

Consuelo Vallina

María José Bressa

Chromosomes of Pseudapanteles dignus (Muesebeck, 1938) and a review of known karyotypes of the subfamily Microgastrinae (Hymenoptera, Braconidae)

伪伪蚜茧蜂属的染色体及小腹茧蜂亚科已知核型的综述（膜翅目，茧蜂科）

A new species, Rhaphidosomapaganicumsp. nov. (Heteroptera: Reduviidae: Harpactorinae: Rhaphidosomatini), is described from the Dry Zone of Myanmar. It is the fifth species of Rhaphidosoma Amyot et Serville, 1843, known from the Oriental Region, and the first record of the genus for Myanmar and Indochina. The structure of the external and internal terminalia of the male and female is described and illustrated in detail. The completely inflated endosoma is described for the first time in reduviids. The complex structure of the ductus seminis is shown; it terminates with a voluminous seminal chamber which opens with a wide secondary gonopore and may be a place where spermatophores are formed. The new species is compared with all congeners from the Oriental Region and Western Asia. It is characterised by the absence of distinct tubercles on the abdominal tergites of the male, the presence only two long tubercles and small rounded ones on the abdominal tergites VII and VI, respectively, in the female, the presence of short fore wing vestiges which are completely hidden under longer fore wing vestiges, and other characters. In addition to the morphological description, an account is given of the male karyotype and the structure of testes of Rh.paganicumsp. nov. and another species of Harpactorinae, Polididusarmatissimus Stål, 1859 (tribe Harpactorini). It was found that Rh.paganicumsp. nov. has a karyotype comprising 12 pairs of autosomes and a multiple sex chromosome system (2n♂=24A+X1X2X3Y), whereas P.armatissimus has a karyotype comprising five pairs of autosomes and a simple sex chromosome system (2n♂=10A+XY). The males of these species were found to have seven and nine follicles per testis, respectively. FISH mapping of 18S ribosomal DNA (major rDNA) revealed hybridisation signals on two of the four sex chromosomes (Y and one of the Xs) in Rh.paganicumsp. nov. and on the largest pair of autosomes in P.armatissimus. The presence of the canonical "insect" (TTAGG) n telomeric repeat was detected in the chromosomes of both species. This is the first application of FISH in the tribe Raphidosomatini and in the genus Polididus Stål, 1858.

Dmitry A Gapon

Anna Maryańska-Nadachowska

﻿A new species of the genus Rhaphidosoma Amyot et Serville, 1843 (Heteroptera, Reduviidae), with data on its chromosome complement

一种新属Rhaphidosoma Amyot et Serville, 1843（异翅目，猎蝽科）的物种及其染色体组数据

A chromosomal polymorphism was detected on karyological screening of Kangayam breeding sires prior to subjecting them for frozen semen collection. One bull possessed the chromosomal complement 2n = 60, consisting of 58 acrocentric autosomes, one large sub-metacentric X-chromosome, and one small acrocentric Y-chromosome with a small visible p-arm, which was further confirmed using CBG- and GTG-banding. This polymorphism was attributed to a heterochromatin variation of the acrocentric Y-chromosome routine in the Bosindicus Linnaeus, 1758 cattle.

Vemula Harshini

P Kumarasamy

S M K Karthickeyan

﻿A rare chromosomal polymorphism in a Kangayam bull (Bos indicus) of south India

印度南部康格亚姆牛（Bos indicus）中一种罕见的染色体多态性

Ribosomal RNA (18S, 5.8S, 28S) gene clusters in genomes form regions that consist of multiple tandem repeats. They are located on a single or several pairs of chromosomes and play an important role in the formation of the nucleolus responsible for the assembly of ribosome subunits. The rRNA gene cluster sequences are widely used for taxonomic studies, however at present, complete information on the avian rDNA repeat unit structure including intergenic spacer sequence is available only for the chicken (

Alina Zhukova

Gennadii Zakharov

Olga Pavlova

Alsu Saifitdinova

Description of the complete rDNA repeat unit structure of Coturnix japonica Temminck et Schlegel, 1849 (Aves)

日本鹌鹑（Coturnix japonica Temminck et Schlegel, 1849）完整rDNA重复单元结构的描述

Within a practical course of cytotaxonomy organized in Pisa (Italy) on February 2024 by the Group for Floristics, Systematics and Evolution of the Italian Botanical Society, we tested whether using image analysis softwares possible biases are still introduced by different observers. We conclude that observer bias selectively applies in possibly overestimating the length of short arms in a karyotype. As a consequence, the parameters most sensitive to these possible errors are CV CI and CV CL , and to a less degree M CA and THL. To achieve more stable results among observers, a still lacking standardized measurement protocol could be helpful.

Lorenzo Peruzzi

Jacopo Franzoni

Manuel Tiburtini

Emanuela Abidi

Emiliano Alù

Giulio Barone

Elisabetta Bianchi

Chiara Cataudella

Emanuela Di Iorio

Maria Guerrina

Fabio Mondello

Luca Paino

Mario Pentassuglia

Manuela Porrovecchio

Giovanni Rivieccio

Eugenia Siccardi

Adriano Stinca

Alessio Tei

Virginia Volanti

Antonio Giacò

Different observers introduce not negligible biases in comparative karyomorphological studies

不同观察者对比较核形态学研究引入了不可忽略的偏差

Abbreviation	Comp. Cytogenet.
Journal Impact	1.14
Quartiles(Global)	ZOOLOGY(Q3)

ISSN	1993-0771, 1993-078X
h-index	25

Publication Information	Publisher: Pensoft Publishers，Publishing cycle: Semiannual，Journal Type: journal，Open Access Journals: Yes
Basic data	Year of publication: 2010，Proportion of original research papers: 91.67%，Self Citation Rate:10.00%， Gold OA Rate: 93.85%
Journal Fees	$Details
Average review cycle	网友分享经验：>12周，或约稿
Average recruitment ratio	网友分享经验：容易

Comparative Cytogenetics

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Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update

Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool

Chromosomes of Pseudapanteles dignus (Muesebeck, 1938) and a review of known karyotypes of the subfamily Microgastrinae (Hymenoptera, Braconidae)

A new species of the genus Rhaphidosoma Amyot et Serville, 1843 (Heteroptera, Reduviidae), with data on its chromosome complement

A rare chromosomal polymorphism in a Kangayam bull (Bos indicus) of south India

Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update

Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool

Chromosomes of Pseudapanteles dignus (Muesebeck, 1938) and a review of known karyotypes of the subfamily Microgastrinae (Hymenoptera, Braconidae)

Description of the complete rDNA repeat unit structure of Coturnix japonica Temminck et Schlegel, 1849 (Aves)

Different observers introduce not negligible biases in comparative karyomorphological studies

Comparative Cytogenetics

Journal Citation Format

A journal article with 1 author

A journal article with 2 authors

A journal article with 3 authors

A journal article with 5 or more authors

Books Citation Format

Thesis Citation Format

Web sites Citation Format

Patent Citation Format

Staying up late manually editing references? ivySCI automatically matches journals and helps you generate references with a single click.

Share Submission Experience

Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update

Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool

Chromosomes of Pseudapanteles dignus (Muesebeck, 1938) and a review of known karyotypes of the subfamily Microgastrinae (Hymenoptera, Braconidae)

﻿A new species of the genus Rhaphidosoma Amyot et Serville, 1843 (Heteroptera, Reduviidae), with data on its chromosome complement

﻿A rare chromosomal polymorphism in a Kangayam bull (Bos indicus) of south India

Number and location of rDNA clusters in the superfamilies Tenthredinoidea and Cynipoidea (Hymenoptera): an update

Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool

Chromosomes of Pseudapanteles dignus (Muesebeck, 1938) and a review of known karyotypes of the subfamily Microgastrinae (Hymenoptera, Braconidae)

Description of the complete rDNA repeat unit structure of Coturnix japonica Temminck et Schlegel, 1849 (Aves)

Different observers introduce not negligible biases in comparative karyomorphological studies

A new species of the genus Rhaphidosoma Amyot et Serville, 1843 (Heteroptera, Reduviidae), with data on its chromosome complement

A rare chromosomal polymorphism in a Kangayam bull (Bos indicus) of south India