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Occurrence of leucism in Eira barbara (Carnivora, Mustelidae) in Brazil Biota Neotropica
Talamoni,Sonia; Viana,Pedro Igor Macario; Costa,Claudia Guimarães; Palú,Lauro; Oliveira,Raphaela Barcelos; Pessôa,Leila Maria.
Abstract The occurrence of anomalous coloration (albinism, leucism and melanism) in mammals is a rare phenomenon in nature, but this phenomenon has been reported for several species of mammals. In this study, we report on the occurrence of leucism in Eira barbara by examining three road-killed individuals and two sightings of live animals in Reserva Particular do Patrimônio Natural Santuário do Caraça, southeastern Brazil. In addition, we examined tayra specimens housed in mammal collections from Brazil and USA. The animals found dead and those sighted had a whitish yellow fur on the body and head, resulting in lighter coloration than the coloring pattern commonly observed in tayras. Despite these lighter color pattern, the specimens showed parts of soft...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leucism; Fur coloration; Tayra; Serra do Caraça.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300205
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Small mammals (Chiroptera, Didelphimorphia, and Rodentia) from Jaíba, middle Rio São Francisco, northern Minas Gerais State, Brazil Biota Neotropica
Nogueira,Marcelo Rodrigues; Pol,André; Pessôa,Leila Maria; Oliveira,João Alves de; Peracchi,Adriano Lúcio.
We report the results of small mammals inventories conducted in the region of Jaíba, northern Minas Gerais state, southeastern Brazil, from 1990 to 1995. This region is located in the southern limit of the Caatinga biome, and harbors a unique set of natural ecosystems and extensive agricultural areas. With a total effort of 2964 trap-nights and 44 net sessions, we captured 893 small mammals from 46 species, including four marsupials, 13 rodents, and 29 bats. We report on species that are endemic to the Caatinga (Wiedomys pyrrhorhinos and Xeronycteris vieirai), and species that are new to the mammal fauna of the state of Minas Gerais (Tonatia saurophila, X. vieirai, and Myotis lavali). We also provide the first valid voucher-supported record of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Limestone outcrop; Endemic species; Range extension; Taxonomy.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200207
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The karyotype of Noctilio Albiventris (Chiroptera, Octilionidae) from the northern pantanal of Brazil and its taxonomic implications Mastozool. neotrop.
Vilamiu,Rossana de Paula; Corrêa,Margaret Maria de O.; Pessôa,Leila Maria; Oliveira,João A. de; Oliveira,Luiz Flamarion B..
The complete karyotype of Noctilio albiventris cabrerai is described on the basis of specimens from the northern Pantanal region of central Brazil. The G-banded karyotype comprises a diploid number (2n) of 34, an autosomal fundamental number (FNa) of 62, and respectively submetacentric and acrocentric X and Y chromosomes. Active nucleolar organizer regions (NORs) were located in pair 12. C-banding showed constitutive heterochromatin in the pericentromeric regions of all autosomes and in the X chromosome. Differences were found with respect to specimens from Honduras, referable to N. a. minor, which had a pair of autosomes with totally heterochromatic short arms, and from Colombia, referable to N. a. affinis, which had a metacentric X chromosome.
Tipo: Info:eu-repo/semantics/article Palavras-chave: G- and C-banding; Lesser bulldog bat; Nucleolar organizer regions; Pantanal.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100029
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First report of partial albinism in genus Thrichomys (Rodentia: Echimyidae) Pap. Avulsos de Zool. (São Paulo)
Neves,Antonio Carlos da S.A.; Coutinho,Ludmilla Carvalho; Oliveira,Marcione B. de; Pessôa,Leila Maria.
Reports about albinism in rodents are common. In the family Echimyidae, however, albinism is very rare. This is the second case of coat color variation reported within Echimyidae and the first for the genus Thrichomys. The pelages of Thrichomys pachyurus individuals with normal and variant coat color were observed under a fluorescent artificial light and were examined with a stereoscopic microscope. The descriptions of pelage color were based on the book "Color Standards and Color Nomenclature". The predominantly white pattern of coat color in individuals of T. pachyurus suggests a partial albinism caused by delay in migration time of melanoblasts from neural crest to epidermis. The habitat of T. pachyurus has a heavy vegetative cover, which offers natural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Albino; Thrichomys pachyurus; Neotropical; Pantanal; Coat color.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492014000900001
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