Cytotypes of Kirk’s Dik-Dik (&lt;i&gt;Madoqua kirkii&lt;/i&gt;,Bovidae) Show Multiple Tandem Fusions

Černohorská, Halina; Kubı́čková, Svatava; Váhala, J.; Robinson, Terence J.; Rubeš, Jiřı́

doi:10.1159/000322483

Cited by 19 publications

(17 citation statements)

References 27 publications

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“…Bovidae ancestral karyotype was very similar to the present karyotype of the Bovinae subfamily with Bovinae chromosomes 9 and 14, as well as an X chromosome of Bovinae type [Iannuzzi et al, 2009]. Chromosomal evolution in Bovidae is largely attributable to Robertsonian fusions, although the increasing number of cytogenetic reports reveal that tandem fusions also impact karyotype shaping in this family [Rubes et al, 2008;Ropiquet et al, 2010;Cernohorska et al, 2011] by reducing the ancestral diploid number (2n = 60) in derived karyotypes. Recorded chromosome numbers vary from 2n = 30 in gazelles to 2n = 60 in a range of species within the tribes Aepycerotini, Hippotragini, Oreotragini, Cephalophini and Bovini.…”

Section: Family Bovidaesupporting

confidence: 59%

Comparative Molecular Cytogenetics in Cetartiodactyla

Rubeš

Musilová

Kopečná

et al. 2012

Cytogenet Genome Res

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Cetartiodactyla comprises Artiodactyla (even-toed ungulates) and Cetacea (whales, dolphins and porpoises). Artiodactyla is a large taxon represented by about 200 living species ranked in 10 families. Cetacea are classified into 13 families with almost 80 species. Many publications concerning karyotypic relationships in Cetartiodactyla have been published in previous decades. Formerly, the karyotypes of closely related species were compared by chromosome banding. Introduction of molecular cytogenetic methods facilitated comparative mapping between species with highly rearranged karyotypes and distantly related species. Such information is a prerequisite for the understanding of karyotypic phylogeny and the reconstruction of the karyotypes of common ancestors. This study summarizes the data on chromosome evolution in Cetartiodactyla, mainly derived from molecular cytogenetic studies. Traditionally, phylogenetic relationships of most groups have been estimated using morphological data. However, the results of some molecular studies of mammalian phylogeny are discordant with traditional conceptions of phylogeny. Cetartiodactyls provide several examples of incongruence between traditional morphological and molecular data. Such cases of conflict include the relationships of the major clades of artiodactyls, the relationships among the extant families of the suborder Ruminantia or the phylogeny of the family Bovidae. The most unexpected aspect of the molecular phylogeny was the recognition that Cetacea is a deeply nested member of Artiodactyla. The largest living order of terrestrial hoofed mammals is the even-toed hoofed mammals, or Artiodactyla. The artiodactyls are composed of over 190 living species including pigs, peccaries, hippos, camels, llamas, deer, pronghorns, giraffes, sheep, goats, cattle and antelopes. Cetacea is an order of wholly aquatic mammals, which include whales, dolphins and porpoises. Cetartiodactyla has become the generally accepted name for the clade containing both of these orders.

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Section: Family Bovidaesupporting

confidence: 59%

Comparative Molecular Cytogenetics in Cetartiodactyla

Rubeš

Musilová

Kopečná

et al. 2012

Cytogenet Genome Res

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“…Tandem fusions are known to have powerful negative heterotic effects (King 1995). In mammals, hetero zygotes' sterility for tandem fusions was found in controlled breeding experiments in rodents of the genera Otomys Couvier, 1824 (Pillay and Willan Meester 1992, Pillay et al 1995, Taylor 2000 and Taterillus Thomas, 1910(Dobigny et al 2005 as well as in the antelope Madoqua kirkii Günther, 1880 (Ryder et al 1989, Cernohorska et al 2011). Since they are heterotically deleterious, once occurred, tandem fusions have an all or nothing fate: they reach homozygosis and promote instantaneous reproductive isolation from the non-rearranged stock, or they are lost (Dobigny et al 2005).…”

Section: Iberá I Iberá Ii and Iberá Iiimentioning

confidence: 99%

Integrative lineage delimitation in rodents of the Ctenomys Corrientes group

Caraballo

Rossi

2017

Mammalia

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Abstract:The tuco-tucos rodents (genus Ctenomys) of the Corrientes group comprise several populations that inhabit the vast area under the influence of the Iberá wetland. Lineage delimitation within the recently diverged Corrientes group is a challenging task as morphological differentiation is not conspicuous between populations. However, delimitation is crucial for evolutionary studies and conservation issues. In this study, we performed a phylogenetic analysis including cytochrome b (cyt-b) sequences from taxa that had never been studied in a comprehensive context. We integrated previously published chromosomal studies, mitochondrial phylogenies and simple sequence repeat (SSR) variability analyses, and applied a delimitation criterion over the basis of chromosomal incompatibilities and genetic exclusivity. Under this integrative approach seven independently evolving lineages were delimited in the Corrientes group: Ctenomys roigi, which conserves its former definition, Ctenomys dorbignyi and Ctenomys perrensi complex which were redefined, Sarandicito which includes the population of Paraje Sarandicito and probably a group of nearby poorly studied populations, and Iberá i, ii and iii distributed at both sides of the Iberá wetland. We discuss future perspectives to evaluate the proposed lineages and conservation issues concerning these tuco-tucos.

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“…A previous report by D 'Aiuto et al [1997] described the distribution of sat I and sat II organized in 2 separate domains in the centromeric region in sheep (Ovis aries). More recently, Cernohorska et al [2011] revealed 2 different hybridization patterns with centromeric clones in Kirk's dik-dik ( Madoqua kirkii, Neotragini). Two satellite DNA families organized in 2 separate domains located in centromeric regions are well-known in the mouse genome as well [Kipling et al, 1991].…”

Section: Satellite I and Ii Dna Sequencesmentioning

confidence: 99%

“…Copyright © 2012 S. Karger AG, Basel One of the most controversial mammalian taxa from a classification point of view is that of the family Bovidae being subdivided into 2 distinct clades -Bovinae (Bovini, Boselaphini and Tragelaphini) and Antilopinae (Aepycerotini, Alcelaphini, Antilopini, Caprini, Cephalophini, Hippotragini, Neotragini, Oreotragini and Reduncini). The most recent classification recognizes 9 genera within Antilopini: Ammodorcas, Antidorcas, Antilope, Eudorcas, Gazella, Litocranius, Nanger, Procapra and Saiga [Robinson and Ropiquet, 2011].Chromosomal evolution in Bovidae is largely attributable to Robertsonian fusions, although the increasing number of cytogenetic reports reveals that tandem fusions also impact karyotype shaping in this family [Rubes et al, 2008;Ropiquet et al, 2010;Cernohorska et al, 2011] by reducing the ancestral diploid number (2n = 60) in derived karyotypes. Many Robertsonian chromosomal fusions are homoplasic, or are often lineage-specific (autapomorphic), and thus phylogenetically uninformative [Robinson and…”

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confidence: 99%

Molecular Insights into X;BTA5 Chromosome Rearrangements in the Tribe Antilopini (Bovidae)

Černohorská

Kubı́čková

Váhala³

et al. 2012

Cytogenet Genome Res

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For a clade that includes Antilope, Gazella,Nanger and Eudorcas (Antilopinae), X;BTA5 translocation is a synapomorphy. Using a combination of fluorescence in situ hybridization (FISH) probes and polymerase chain reaction techniques, we provide (i) the first insight into the X;BTA5 architecture which differs in the species under study: Antilope cervicapra (genus Antilope), Gazella leptoceros (genus Gazella) and Nanger dama ruficollis (genus Nanger), (ii) determination of interstitial satellite DNA at the X;BTA5 junctions, and (iii) determination of repetitive sequences occupying constitutive heterochromatin of Xp arms in the studied species. The distribution of 2 repetitive DNA families in the centromeric regions of all chromosomes has been investigated by FISH with probes representing satellite I and satellite II DNA in all studied species. In this context, we discuss a markedly smaller centromere in the BTA5 (Y2) unfused chromosomes in males in the XY1Y2 determining system in comparison with other acrocentrics. An analysis of karyotypic data described in current published studies revealed a disparity with the data determined by FISH. In this report, we document chromosomal fusions in the 3 species mentioned resulting from FISH with painting probes prepared from cattle (Bos taurus). The number and chromosomal location of nucleolus organizer regions were determined by FISH. In the present study, we emphasize the importance of chromosomal rearrangement verification, particularly, if they are used for phylogenetic analysis.

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Cytotypes of Kirk’s Dik-Dik (<i>Madoqua kirkii</i>,Bovidae) Show Multiple Tandem Fusions

Cited by 19 publications

References 27 publications

Comparative Molecular Cytogenetics in Cetartiodactyla

Comparative Molecular Cytogenetics in Cetartiodactyla

Integrative lineage delimitation in rodents of the Ctenomys Corrientes group

Molecular Insights into X;BTA5 Chromosome Rearrangements in the Tribe Antilopini (Bovidae)

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