Leucismo en el coatí de nariz blanca Nasua narica (Mammalia: Carnivora), en Quintana Roo, México

Silva-Caballero, Adrián; Montiel‐Reyes, Fernando; Sánchez-Garibay, Eduardo; Ortega, Jorge

doi:10.12933/therya-14-193

Cited by 16 publications

(12 citation statements)

References 11 publications

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“…Except for the report of the occurrence in pinniped species (Acevedo & Aguayo 2008;Abreu et al 2013), anomalous colors in other Carnivora is known in Eira barbara (Trolle 2003;Reis et al 2005;Tortato & Althoff 2007), in Nasua narica (Silva-Caballero et al 2014), and in Lontra longicaudis (Arriaga-Flores et al 2016).…”

Section: Introductionmentioning

confidence: 98%

Occurrence of leucism in Eira barbara (Carnivora, Mustelidae) in Brazil

et al. 2017

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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 tissue, such as iris and the skin, with pigmentation very similar to that present in individuals with the typical color pattern. This set of factors indicates the specimens recorded were in fact leucistic and not albino. Among the specimens examined in the scientific collections, we found nine individuals from different localities that presented the whitish yellow color pattern. Some studies attribute the higher frequency of cases of leucism due to small populations and / or with some mechanism of reproductive isolation. Thus, analysis of the genetic variability of populations containing individuals with such characteristics should be considered. On the other hand, the occurrence of polymorphic color phenotype in tayras indicates that hypotheses related to the fixation of recessive characteristics, or on possible environmental adaptive advantages of these phenotypes can be tested.

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Section: Introductionmentioning

confidence: 98%

Occurrence of leucism in Eira barbara (Carnivora, Mustelidae) in Brazil

et al. 2017

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“…Os moradores fornecem diariamente alimentação aos saguis, que habituados a presença dessas pessoas descem durante os eventos de interação do extrato arbóreo até as partes mais baixas, permitindo a observação e o registro fotográfico dos animais. Apesar de ser incomum o registro de leucismo, o fenômeno tem ocorrido com frequência em diversas espécies de mamíferos como lobos-marinhos-do-sul, quatis, gambás, primatas, morcegos e irara (Abreu et al, 2013;Silva-Caballero et al, 2014;Valle et al, 2014;Aximoff & Vaz, 2016;Biassi et al, 2017;Talamoni et al, 2017), e é capaz de fornecer evidências indiretas da variabilidade genética de uma população.…”

Section: Este Trabalho Registra Pela Primeira Vezunclassified

“…Os registros desses indivíduos demonstram que C. penicillata pode desenvolver anomalias na coloração, dado que pode contribuir com informações acerca da história natural da espécie. O leucismo ocorre devido a expressão de alelos recessivos, sendo mais frequente o surgimento de indivíduos leucísticos em populações pequenas e isoladas (Silva-Caballero et al, 2014;Duquette et al, 2015), como o grupo de saguis desse trabalho. Por viver em uma praça urbana, o grupo acaba ilhado em uma diminuta mancha de vegetação, e a ocorrência de endogamia propicia a expressão desses alelos.…”

Section: Este Trabalho Registra Pela Primeira Vezunclassified

Leucismo em Callithrix penicillata (É. Geoffroy, 1812) (Primates: Cebidae) em uma área urbana

Vale

Prezoto

Barbosa

et al. 2018

Rev. Bras. Zoociências

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Leucism in Callithrix penicillata (É. Geoffroy, 1812) (Primates: Callitrichidae) in an urban area. The genus Callithrix has six species all endemic to Brazil, the color within the group is variable, the animals of this genus are characterized by the presence of auricular tufts and a white spot on the forehead, absent in Callithrix geoffroyi (Geoffroy, 1812). In this study, individuals of Callithrix penicillata leucistic were registered for the first time in Minas Gerais during the months of December 2017, January and February of 2018. The groups were found in a green area in the Zona da Mata Mineira, where geographic isolation and endogamy led to changes in coloration. The low number of predators in the urban environment contributed to the survival of these primates.

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“…Albinism is defined as the complete loss of pigment in the entire body (Silva-Caballero et al 2014). It is recognized by the abnormal color of the skin, fur, feathers, scales and eyes (McCardle 2012).…”

mentioning

confidence: 99%

“…The recording site is located 6,100 linear m from Pátzcuaro Lake, one of the most important water reservoirs in western México. There is very little information that evaluates the costs for the individuals that have chromatic aberrations (Silva-Caballero et al 2014). Nevertheless, it is considered a condition that negatively affects the individuals that possess it, since it can affect their survival by making them more conspicuous to predators.…”

mentioning

confidence: 99%