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

Abstract

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.

First records of leucism in Leontocebus nigricollis graellsi (Primates: Callitrichidae)

“…According to the scientific literature, leucism in monkeys may be caused by two processes: inbreeding because of isolated populations (Aximoff et al, 2020;Aximoff & Vaz, 2016;do Vale et al, 2018;Guzmán Caro et al, 2018;López-Platas et al, 2021), environmental pressure caused by pollution, or the interaction of both (Barros-Diaz et al, 2022), conditions that we believe do not correspond to the records presented here. L. n. graellsi is a species frequently sighted in the Cuyabeno Reserve, which means that its population is large.…”

“…The few known reports of leucism in primates have been documented mostly in large species, particularly in the genus Alouatta (Aximoff & Vaz, 2016;Barros-Diaz et al, 2022;López-Platas et al, 2021), but also in Ateles (Guzmán Caro et al, 2018); in small primates, there are only a few reports for the genus Callithrix (Aximoff et al, 2020;do Vale et al, 2018). Therefore, in this short communication, we present the first reports of leucism in the genus Leontocebus.…”

Hypopigmentation in mantled howler monkeys Alouatta palliata (gray 1849): First documented cases of whole‐body leucism in South America

“…In mammals, hypopigmentation conditions like leucism have been recorded in several taxa, for example, canids (López‐González, 2011 ), erinaceids (Morris & Tutt, 1996 ), mustelids (Tortato & Althoff, 2007 ), pinnipeds (Acevedo & Aguayo, 2008 ), procyonids (Silva‐Caballero et al, 2014 ), chiropterans (García‐Morales et al, 2012 ), rodents (Mejía Valenzuela, 2019 ), soricids (Guevara et al, 2011 ), and ursids (Ritland et al, 2001 ). In neotropical primates, there are several records of abnormal pigmentation in the coat (López‐Platas et al, 2021 ), for example, Brown howler monkey Alouatta guariba clamitans (Aximoff & Vaz, 2016 ; Fortes & Bicca‐Marques, 2008 ), Black‐handed spider monkey Ateles geoffroyi (Espinal et al, 2016 ), Black‐tufted marmoset Callithrix penicillata , Common Marmoset Callithrix jacchus , and their hybrids (Aximoff et al, 2020 ; do Vale et al, 2018 ).…”