Intrapopulation Chromosomal Polymorphism in &lt;b&gt;&lt;i&gt;Mazama gouazoubira&lt;/i&gt;&lt;/b&gt; (Cetartiodactyla; Cervidae): The Emergence of a New Species?

Valeri, Mirela Pelizaro; Tomazella, Iara Maluf; Duarte, José Maurício Barbanti

doi:10.1159/000488377

Cited by 12 publications

(7 citation statements)

References 37 publications

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“…The most surprising examples of rapid and radical karyotypic evolution are found in the genera Muntiacus and Mazama of forest deer [Duarte et al, 2008;Abril et al, 2010;Mudd et al, 2020]. These genera demonstrate great variation in chromosome number (from 2n = 6 to 2n = 46 for Muntiacus and from 2n = 32 to 2n = 70 for Mazama) in closely related and morphologically similar species, which has led to reports of complexes of cryptic species associated with intraspecific chromosome polymorphisms, and discovery of new species in recent decades [Yang et al, 1995[Yang et al, , 1997aDuarte and Jorge, 2003;Abril and Duarte, 2008;Abril et al, 2010;Fiorillo et al, 2013;Valeri et al, 2018;Cifuentes-Rincón et al, 2020;Galindo et al, 2021;Peres et al, 2021].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the mechanisms of karyotypic evolution that establish the remarkable chromosomal polymorphisms presented by other groups, such as Neotropical deer, are unexplored and still mostly studied only by classical cytogenetic methods [Duarte and Jorge, 2003;Abril and Duarte, 2008;Abril et al, 2010;Fiorillo et al, 2013;Cifuentes-Rincón et al, 2020]. In this group, the rapid chromosomal reorganization and the observation of intraspecific chromosome polymorphisms evidence a possible ongoing speciation process [Abril et al, 2010;Valeri et al, 2018;Galindo et al, 2021].…”

Section: Introductionmentioning

confidence: 99%

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Cytogenetic Mapping of Cattle BAC Probes for the Hypothetical Ancestral Karyotype of the Family Cervidae

Bernegossi

Vozdová

Černohorská

et al. 2022

Cytogenet Genome Res

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Cervids are characterized by their greatest karyotypic diversity among mammals. A great diversity of chromosome numbers in notably similar morphological groups leads to the existence of several complexes of cryptic species and taxonomic uncertainties. Some deer lineages, such as those of Neotropical deer, stand out for a rapid chromosomal reorganization and intraspecific chromosome polymorphisms, which have not been properly explored yet. For that reason, we contribute to the study of deer karyotype diversity and taxonomy by producing and characterizing new molecular cytogenetic markers for the gray brocket deer (Subulo gouazoubira), a deer species that retained the hypothetical ancestral karyotype of Cervidae. We used bacterial artificial chromosome (BAC) clones derived from the cattle genome (Bos taurus) as markers, which were hybridized on S. gouazoubira metaphase chromosomes. In total, we mapped 108 markers, encompassing all gray brocket deer chromosomes, except the Y chromosome. The detailed analysis of fluorescent in situ hybridization results showed 6 fissions and 1 fusion as interchromosomal rearrangements that have separated cattle and gray brocket deer karyotypes. Each group of BAC probes derived from bovine chromosome pairs 1, 2, 5, 6, 8, and 9 showed hybridization signals on 2 different chromosomes, while pairs 28 and 26 are fused in tandem in a single acrocentric chromosome in S. gouazoubira. Furthermore, the BAC markers detected the occurrence of intrachromosomal rearrangements in the S. gouazoubira chromosomes homologous to pair 1 and the X chromosome of cattle. We present a karyotypic map of the 108 new markers, which will be of great importance for future karyotypic evolution studies in cervids and, consequently, help in their conservation and taxonomy resolution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cytogenetic Mapping of Cattle BAC Probes for the Hypothetical Ancestral Karyotype of the Family Cervidae

Bernegossi

Vozdová

Černohorská

et al. 2022

Cytogenet Genome Res

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“…Several cytogenetically studied species have shown an extensive intraspecific polymorphism ( Taylor et al 1969 ; Jorge and Benirschke 1977 ; Neitzel 1987 ; Duarte and Jorge 1996 ; Duarte and Merino 1997 ; Abril and Duarte 2008 ; Abril et al 2010 ; Valeri et al 2018 ). This polymorphism would suggest a rapid speciation process driven by chromosomal rearrangements, with a diploid number of chromosomes ranging between 42 and 52, considered within six geographically established cytotypes ( Duarte et al 2008 ; Abril et al 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Designation of a neotype for Mazama americana (Artiodactyla, Cervidae) reveals a cryptic new complex of brocket deer species

Cifuentes-Rincón¹,

Morales-Donoso²,

Sandoval³

et al. 2020

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Mazama americana (red brocket deer) is the genus-type species (first species described for this genus) and the basis for the identity of other Mazama species. Mazama americana is one of the most abundant and widely distributed deer species in the neotropical forest. However, recent studies suggest that this taxon belongs to a species complex. Our goal was to collect an animal at the type locality (topotype) in French Guiana with the aim of characterizing the morphological (biometric, craniometric), cytogenetic (Giemsa, C-banding, G-banding and NOR) and molecular (mitochondrial DNA) features. The comparisons showed that the collected specimen was very similar morphologically to specimens from other South American populations, but it was cytogenetically and molecularly very different from any of the cytotypes already described for this species, corroborating the existence of a complex of cryptic species. The data suggest that the M. americana topotype is a different species from all the cytotypes already described in the literature and which occupy the southern region of the Amazon River. The characterization and designation of the M. americana neotype is the first step toward a taxonomic reorganization of the genus Mazama, with the potential identification of new species.

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“…4D). The schematic representation of the G-band has an important value in the study of Neotropical cervids due to the high rate of karyotype evolution and the frequently reported chromosomal polymorphisms (Abril and Duarte 2008; Abril et al 2010; Valeri et al 2018). However, as S. gouazoubira presents chromosomes of remarkably similar morphology and length (Neitzel 1987; Duarte 1992), the chromosomal study of this species requires high-quality bandings and, even in this condition, the analyses can lead to misunderstanding.…”

Section: Discussionmentioning

confidence: 99%

Resurrection of the genus Subulo for the gray brocket deer, with designation of a neotype

Bernegossi

Borges

Sandoval

et al. 2022

Journal of Mammalogy

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The gray brocket deer, Mazama gouazoubiraG. Fischer, 1814, occurs in South America and presents an extensive degree of morphological and genetic variability. Previous phylogenetic research showed that the genus Mazama is polyphyletic and imposed the designation of a different genus-group name for M. gouazoubira. We aimed to review and clarify the taxonomy of M. gouazoubira through the proposal of updating the nomenclature for this taxon and by the characterization of specimens collected close to the original type locality (topotypes). The topotypes were characterized by morphological (general characterization and morphometry), cytogenetic (conventional staining, Ag-NOR, G- and C-banding, and fluorescence in situ hybridization), and phylogenetic (mitogenomes) approaches. We revealed chromosome homologies between cattle and M. gouazoubira using an entire set of cattle whole chromosome painting probes and propose an updated G-band idiogram for the species. The morphometric analysis did not discriminate the individuals of M. gouazoubira, including the topotypes, from other small brocket deer species. However, the phylogenetic analysis, based on a Bayesian inference tree of the mitogenomes, confirmed the polyphyly of the genus Mazama and supported the need to change the gray brocket deer genus-group name. Based on our revision, we validated the genus SubuloSmith, 1827, and fixed a type species for the genus. In the absence of the holotype, we denominated a neotype described by the collection of a male topotype in Paraguay. The nomenclature rearrangement presented here is a starting point that will assist in the taxonomic resolution of Neotropical deer.

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Intrapopulation Chromosomal Polymorphism in <b><i>Mazama gouazoubira</i></b> (Cetartiodactyla; Cervidae): The Emergence of a New Species?

Cited by 12 publications

References 37 publications

Cytogenetic Mapping of Cattle BAC Probes for the Hypothetical Ancestral Karyotype of the Family Cervidae

Cytogenetic Mapping of Cattle BAC Probes for the Hypothetical Ancestral Karyotype of the Family Cervidae

Designation of a neotype for Mazama americana (Artiodactyla, Cervidae) reveals a cryptic new complex of brocket deer species

Resurrection of the genus Subulo for the gray brocket deer, with designation of a neotype

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