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Dias D.,University of Aveiro | Dias D.,Federal University of Santa Catarina | Dias D.,Federal University of Espirito Santo | Fonseca C.,University of Aveiro | And 5 more authors.
Mammalia | Year: 2016

The small didelphid marsupial Cryptonanus guahybae was described as a subspecies of Gracilinanus microtarsus and was so far considered endemic to the state of Rio Grande do Sul, southern Brazil. We used morphological data to identify Cryptonanus specimens from the states of Santa Catarina and Paraná, deposited in two Brazilian mammal collections. The cytochrome b sequences of our samples formed a well-supported monophyletic group with low intraspecific genetic divergence. This clade showed high interspecific genetic divergence regarding sequences of the two other species of Cryptonanus that occur in Brazil, C. agricolai and C. chacoensis. Diagnostic morphological characters, such as reddish brown dorsal fur, mammary count (7-1-7=15), small molars, and the presence of a complete anterior cingulum on M3, confirm the identification of 20 specimens from southern Brazil as C. guahybae. Considering the morphological diagnoses and the monophyletic and divergent condition of the cytochrome b sequences, it is suitable that these represent the first molecular data for the species. Our results allowed the expansion of the known distribution of C. guahybae throughout the Atlantic Forest phytophysiognomies of the states of Santa Catarina and Paraná. © 2016 by De Gruyter 2016. Source

Mossi A.J.,University Federal da Fronteira Sul | Coppini V.J.,Comercio e Servicos Ambientais Ltda | Cansian R.L.,URI Integrated Regional University Brazil | Kubiak G.B.,URI Integrated Regional University Brazil | And 5 more authors.
Brazilian Journal of Biology | Year: 2014

The genus of Oligoryzomys includes species of small size, morphologically similar, which may impede taxonomic identification, mainly between O. flavescens (Waterhouse, 1837) and O. nigripes (Olfers, 1818). The main objective of this work was to investigate whether the RAPD markers are capable of genetically differentiating the specimens O. nigripes and O. flavescens, coming from Rio Grande do Sul (RS) and Santa Catarina (SC) states, and also to estimate the genetic variability among populations of O. nigripes, with the Uruguay River as a geographical barrier. For this purpose, samples were collected in fragments of forests situated in the North of RS, at FLONA (Floresta Nacional de Passo Fundo) and in fragments from SC, close to the Uruguay River. The karyotyping of two samples for each species was carried out and compared using the RAPD technique together with non- karyotyped individuals. Samples of O. nigripes presented 2n = 62; NA = 82, with submetacentric arms on the largest chromosomes, while samples of O. flavescens showed 2n = 64; NA = 66, with the largest chromosomes presenting acrocentric morphology, making such a result the main difference between the species. The analysis was able to detect two distinct groups, being the first one with karyotyped O. flavescens and the second with karyotyped O. nigripes. Identification afforded 211 loci, among them 181 (85.78%) polymorphic. The Jaccard similarity coefficient was in the range of 0.45 to 0.87. The UPGMA and Main Coordinate Analysis techniques demonstrated the existence of heterogeneous genetics among populations, but did not separate them completely in terms of geographical standards, and they are not influenced by the Uruguay River, which did not act as an efficient barrier. © 2014, Instituto Internacional de Ecologia. All rights reserved. Source

Kunz T.S.,Caipora Cooperativa Para Conservacao da Natureza | Kunz T.S.,Federal University of Rio Grande do Sul | Ghizoni Jr. I.R.,Caipora Cooperativa Para Conservacao da Natureza
Check List | Year: 2011

New records of the recently described species Odontophrynus maisuma are presented for the state of Santa Catarina, filling gap and extending its distribution about 50 km northward. © 2011 Check List and Authors. Source

Giasson L.O.M.,Caipora Cooperativa Para Conservacao da Natureza | Kunz T.S.,Caipora Cooperativa Para Conservacao da Natureza | Kunz T.S.,Federal University of Rio Grande do Sul | Ghizoni Jr. I.R.,Caipora Cooperativa Para Conservacao da Natureza
Check List | Year: 2011

We present here the first records of Melanophryniscus spectabilis out of its type locality and evidences of a restricted distribution for this species. We also discuss its conservation status. © 2011 Check List and Authors. Source

Testoni A.F.,Regional University of Blumenau | Fumis J.,Regional University of Blumenau | Althoff S.L.,Regional University of Blumenau | Tortato F.R.,Federal University of Mato Grosso | Cherem J.J.,Caipora Cooperativa Para Conservacao da Natureza
Check List | Year: 2012

We report Akodon serrensis Thomas, 1902 from three localities in the state of Santa Catarina, in southern Brazil. The specimens were identified based on cytogenetic and craniometric analyses. These are the first records of A. serrensis collected in Santa Catarina, which extend the range of this species ca. 330 km S. © 2012 Check List and Authors. Source

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