A new karyotype of Wiedomys pyrrhorhinus (Rodentia: Sigmodontinae) from Chapada Diamantina, northeastern Brazil

Souza, Ana L. G.; Corrêa, Margaret Maria de Oliveira; Aguilar, Cecilia Teixeira de; Pessôa, Leila Maria

doi:10.1590/s1984-46702011000100013

Cited by 5 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oliveira et al (2007) presented the first records of 11 mammalian species for the state of Maranh ã o, including four rodents, but not Wiedomys cerradensis . The present study nevertheless confirms that this species occurs in the state, extending its known geographic distribution > 900 km to the north, reinforcing the paucity of data on the occurrence of this species ( Souza et al 2011 ).…”

supporting

confidence: 84%

Wiedomys cerradensis (Gonçalves, Almeida, Bonvicino, 2003) (Rodentia, Cricetidae): first record from the state of Maranhão, Brazil

et al. 2016

View full text Add to dashboard Cite

Wiedomys cerradensis (Gon ç alves, Almeida, Bonvicino, 2003) (Rodentia, Cricetidae): first record from the state of Maranh ã o, Brazil Abstract : Wiedomys Hershkovitz, 1959, was considered to be a monotypic genus for > 40 years until P.R. Gon ç alves et al. described Wiedomys cerradensis from the Cerrado savannas of central Brazil. The geographic distribution of this arboreal species is not yet fully understood. The present study confirms the occurrence of the species in the Brazilian state of Maranh ã o. A male Wiedomys specimen was collected in the Inhamum Municipal Environmental Protection Area, which is dominated by Cerrado vegetation, although the species could not be identified from morphological characteristics alone. Molecular analyses were based on the mitochondrial cytochrome b gene. The cytochrome b sequences indicated low divergence between the Maranh ã o specimen and W. cerradensis , and much higher divergence from the specimens of Wiedomys pyrrhorhinus , with the two species being well defined according to the high bootstrap values obtained in the analysis. The molecular data nevertheless permitted the confirmation of the occurrence of W. cerradensis in Maranh ã o, the first record of the species in this state, at a location > 900 km from its previously known distribution.

show abstract

supporting

confidence: 84%

Wiedomys cerradensis (Gonçalves, Almeida, Bonvicino, 2003) (Rodentia, Cricetidae): first record from the state of Maranhão, Brazil

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Wiedomys pyrrhorhinos is endemic to the Caatinga, and has been recorded in the Brazilian states of Alagoas, Bahia, Minas Gerais, Paraíba, and Pernambuco (Maia and Langguth 1987, Pereira and Geise 2009, Souza et al 2011a, Bonvicino 2015, Nogueira et al 2015). Bonvicino (2015) indicated that the species is also present in the state of Sergipe, but this assertion is based on an abstract presented at the XXIV Jornadas Argentinas de Mastozoología.…”

Section: Resultsmentioning

confidence: 99%

“…Trinomys albispinus is endemic to the Cerrado and the Caatinga (contra Carmignotto et al 2012, Paglia et al 2012), and has been recorded in the Brazilian states of Bahia, Minas Gerais, and Sergipe (Souza et al 2006, Pessôa et al 2015b). …”

Section: Resultsmentioning

confidence: 99%

The mammalian faunas endemic to the Cerrado and the Caatinga

Gutiérrez¹,

Marinho‐Filho²

2017

View full text Add to dashboard Cite

Citation: Gutiérrez EE, Marinho-Filho J (2017) The mammalian faunas endemic to the Cerrado and the Caatinga. ZooKeys 644: 105-157. https://doi.org/10.3897/zookeys.644.10827 AbstractWe undertook a comprehensive, critical review of literature concerning the distribution, conservation status, and taxonomy of species of mammals endemic to the Cerrado and the Caatinga, the two largest biomes of the South American Dry-Diagonal. We present species accounts and lists of species, which we built with criteria that, in our opinion, yielded results with increased scientific rigor relative to previously published lists -e.g., excluding nominal taxa whose statuses as species have been claimed only on the basis of unpublished data, incomplete taxonomic work, or weak evidence. For various taxa, we provided arguments regarding species distributions, conservation and taxonomic statuses previously lacking in the literature. Two major findings are worth highlighting. First, we unveil the existence of a group of species endemic to both the Cerrado and the Caatinga (i.e., present in both biomes and absent in all other biomes). From the biogeographic point of view, this group, herein referred to as Caatinga-Cerrado endemics, deserves attention as a unit -just as in case of the Caatinga-only and the Cerrado-only endemics. We present preliminary hypotheses on the origin of these three endemic faunas (Cerrado-only, Caatingaonly, and Caatinga-Cerrado endemics). Secondly, we discovered that a substantial portion of the endemic mammalian faunas of the Caatinga and the Cerrado faces risks of extinction that are unrecognized in the highly influential Red List of Threatened Species published by the International Union for Conservation of Nature (IUCN). "Data deficient" is a category that misrepresents the real risks of extinction of these species considering that (a) some of these species are known only from a handful of specimens collected in a single or a few localities long ago; (b) the Cerrado and the Caatinga have been sufficiently sampled to guarantee collection of additional specimens of these species if they were abundant; (c) natural habitats RESEARCH ARTICLE Launched to accelerate biodiversity research A peer-reviewed open-access journalEliécer E. Gutiérrez & Jader Marinho-Filho / ZooKeys 644: 105-157 (2017) 106 of the Cerrado and the Caatinga have been substantially altered or lost in recent decades. Failures either in the design of the IUCN criteria or in their application to assign categories of extinction risks represent an additional important threat to these endemic faunas because their real risks of extinctions become hidden. It is imperative to correct this situation, particularly considering that these species are associated to habitats that are experiencing fast transformation into areas for agriculture, at an unbearable cost for biodiversity.

show abstract

“…Wiedomys pyrrhorhinus (Wied-Neuwied, 1821) ( Figure 5G) -Two karyotyped specimens showed 2n = 62 and FNa = 104 ( Figure 6D) as reported by Souza et al (2011). Three specimens were captured in the northern and southern sectors, all in arboreal caatinga and during the dry season.…”

Section: Rodentia: Cricetidae: Sigmodontinaementioning

confidence: 54%

“…This species is widely distributed in Caatinga, at the right bank of the São Francisco River (AL, unpublished data). It differs from Wiedomys cerradensis by a set of characters including a larger body size, molar rows, and karyotype (2n = 60 to 62 and FNa = 88 in W. cerradensis against 2n = 62 and FNa = 86, 90, or 104 in W. pyrrhorhinus) (Gonçalves et al 2005;Souza et al 2011;AL, unpublished data). This was the second report of the species for Sergipe state (first report by Bocchiglieri et al 2012) and the first report with karyotypic data for this region.…”

Section: Rodentia: Cricetidae: Sigmodontinaementioning

confidence: 99%

Subsidies for a poorly known endemic semiarid biome of Brazil: non-volant mammals of an eastern region of Caatinga

et al. 2014

View full text Add to dashboard Cite

show abstract

A new karyotype of Wiedomys pyrrhorhinus (Rodentia: Sigmodontinae) from Chapada Diamantina, northeastern Brazil

Cited by 5 publications

References 13 publications

Wiedomys cerradensis (Gonçalves, Almeida, Bonvicino, 2003) (Rodentia, Cricetidae): first record from the state of Maranhão, Brazil

Wiedomys cerradensis (Gonçalves, Almeida, Bonvicino, 2003) (Rodentia, Cricetidae): first record from the state of Maranhão, Brazil

The mammalian faunas endemic to the Cerrado and the Caatinga

Subsidies for a poorly known endemic semiarid biome of Brazil: non-volant mammals of an eastern region of Caatinga

Contact Info

Product

Resources

About