Description of Karyotype of Kerodon acrobata, an endemic rodent in Brazilian Cerrado

Zappes, IA; Portella, AS; Lessa, GM

doi:10.1590/1519-6984.23512

Cited by 5 publications

(5 citation statements)

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“…Kerodon acrobata is endemic to the Cerrado, and has been recorded only in the Brazilian states of Goiás and Tocantins (Moojen et al 1997, Bezerra et al 2010, Zappes et al 2014). …”

Section: Resultsmentioning

confidence: 99%

The mammalian faunas endemic to the Cerrado and the Caatinga

Gutiérrez¹,

Marinho‐Filho²

2017

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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published lists -e.g., excluding nominal taxa whose statuses as species have been claimed only on the basis of unpublished data, incomplete taxonomic work, or weak evidence.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.

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“…Kerodon acrobata is endemic to the Cerrado, and has been recorded only in the Brazilian states of Goiás and Tocantins (Moojen et al 1997, Bezerra et al 2010, Zappes et al 2014). …”

Section: Resultsmentioning

confidence: 99%

The mammalian faunas endemic to the Cerrado and the Caatinga

Gutiérrez¹,

Marinho‐Filho²

2017

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“…Spix's yellow-toothed (SYT) cavy (Galea spixii, Wagler, 1831), the experimental model utilized in present research (Larcher, 1981;Oliveira et al, 2012) belongs to family Caviidae and subfamily Caviinae (Zappes et al, 2014), occurs in a wide variety of open habitats and can reproduce throughout year because females can support pregnancy even devoid ideal feeding conditions (Larcher, 1981). It is found in semiarid to arid climate region of Brazilian Northeastern (Oliveira et al, 2008) where it is constantly used as an alternative source of protein for inhabitants of this region.…”

Section: Introductionmentioning

confidence: 99%

“…Molecular studies have been useful for more precise phylogenetic classification between members of Caviidae family (Zappes et al, 2014), in this sense, P450c17 from different species have different enzymatic activities in different species of mammals (Shet et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Adrenal glands of Spix's yellow-toothed cavy (Galea spixii, Wagler, 1831): morphological and morphometric aspects

et al. 2016

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Considering the physiological importance and need of greater morphophysiological knowledge of adrenal glands, the aims of present study were compare the morphometric data between left and right adrenal of male and female; perform a histological, scanning and transmission electron microscopy study showing tissue constitution of glands; finally, in order to define the presence and correct site of the cytochrome P450c17 expression in adrenal glands, immunohistochemical study of this enzyme was performed in 18 adrenal glands (right n=9 and left n=9) of nine adult Galea spixii (four males and five females). Right adrenal was more cranially positioned than left adrenal; dimensions (weight, length and width) of right adrenal was larger than left adrenal; no differences between male and female body and adrenal measurements were found; the morphology of cells and different amounts of lipid droplets may be related to the different demands of steroid hormones production, related to each zone of the adrenal cortex; and, the cytochrome P450c17 immunolocalization in fasciculate and reticular zone may be related with synthesis of 17-hydroxy-pregnenolone, 17-hydroxy-progesterone, dehydroepiandrosterone or androstenedione.Keywords: adrenal cortex, adrenal medulla, CYP, steroidogenic enzymes, wild rodents. Glândulas adrenais de preás (Galea spixii, Wagler, 1831):aspectos morfológicos e morfométricos ResumoConsiderando a importância fisiológica e a necessidade de melhor conhecimento morfofisiológico das glândulas adrenais, os objetivos do presente estudo foram comparar dados morfométricos entre adrenais direitas e esquerdas de machos e fêmeas; realizar estudos histológicos e microscopia eletrônica de varredura e transmissão revelando a constituição tecidual das glândulas; finalmente, foi realizado estudo imunohistoquímico com objetivo de definir a presença e correto sítio de expressão da citocromo P450c17 nas glândulas adrenais em 18 glândulas adrenais (direita n=9 e esquerda n=9) de nove Galea spixii adultos (quatro machos e cinco fêmeas). A glândula adrenal direita estava posicionada mais cranialmente que a adrenal esquerda; as dimensões (peso, comprimento e largura) da glândula adrenal direita foram maiores que as da esquerda; não houve diferença entre as medidas corpóreas e das adrenais entre machos e fêmeas; a morfologia das células e diferentes quantidades de gotículas lipídicas podem estar relacionadas a diferentes demandas na produção de hormônios esteroides relacionados a cada zona do córtex adrenal; e, a imunolocalização da citocromo P450 na zona fasciculada e reticular pode estar relacionado com a síntese de 17-hidroxi-pregnenolona, 17-hidroxi-progesterona, dehidroepiandrosterona ou androstenediona.Palavras-chave: córtex adrenal, medula adrenal, CYP17, enzimas esteroidogênicas, roedores silvestres.

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“…We now know that the species of Kerodon that co-occurs with T. costalimai in the Tocantins-Paranã Sub-basin (red circles in Fig. 1 ) is instead the Cerrado climbing cavy, Kerodon acrobata , probably a Paranã Sub-basin narrow endemic specializing on limestone outcroppings covered by “mata seca decídua calcária” ( Moojen et al., 1997 ; Bezerra et al., 2010 ; Zappes, 2014 ; Zappes et al., 2014 ; Portella, 2015 ; Portella & Vieira, 2016 ; Roach, 2016 ). Preliminary nuclear DNA-based evidence suggests, however, that a K. rupestris population likely occurs at the northernmost tip of the range of T. costalimai ( Zappes, 2014 ); K. rupestris may also co-occur with T. costalimai in northern Minas Gerais and western Bahia (see Catzeflis et al., 2016 and blue circles in Fig.…”

Section: Ecology Of Triatoma Costalimaimentioning

confidence: 99%