Un caso de leucismo en la tuza de la cuenca de México Cratogeomys merriami (Rodentia: Geomyidae) en el Valle de México

Salvador Gaona Ramírez; María Flores-Cruz; Galo Ludwig Márquez-Villalba; Jesús Campos Serrano; Beatriz Adriana Silva Torres

doi:10.30550/j.azl/2109

Authors

Salvador Gaona Ramírez Laboratorio de Conservación de Fauna Silvestre, Universidad Autónoma Metropolitana, Uni- dad Iztapalapa, División CBS, Departamento de Biología, Av. San Rafael Atlixco No.186, Col. Vicentina. Iztapalapa, CDMX, México https://orcid.org/0000-0002-8926-5050
María Flores-Cruz Universidad Autónoma Metropolitana, Unidad Xochimilco, División CBS, Departamento El Hom- bre y su Ambiente, Calzada del Hueso, No.1100, Col. Villa Quietud, Coyoacán, CDMX México https://orcid.org/0000-0003-3013-8097
Galo Ludwig Márquez-Villalba Laboratorio de Conservación de Fauna Silvestre, Universidad Autónoma Metropolitana, Uni- dad Iztapalapa, División CBS, Departamento de Biología, Av. San Rafael Atlixco No.186, Col. Vicentina. Iztapalapa, CDMX, México https://orcid.org/0000-0003-1438-1273
Jesús Campos Serrano Laboratorio de Conservación de Fauna Silvestre, Universidad Autónoma Metropolitana, Uni- dad Iztapalapa, División CBS, Departamento de Biología, Av. San Rafael Atlixco No.186, Col. Vicentina. Iztapalapa, CDMX, México https://orcid.org/0009-0001-0287-9771
Beatriz Adriana Silva Torres Laboratorio de Conservación de Fauna Silvestre, Universidad Autónoma Metropolitana, Uni- dad Iztapalapa, División CBS, Departamento de Biología, Av. San Rafael Atlixco No.186, Col. Vicentina. Iztapalapa, CDMX, México

DOI:

https://doi.org/10.30550/j.azl/2109

Keywords:

Leucism, Anthropization, Urbanization, Pollution, Rodent

Abstract

Coloration patterns in wildlife species are basic adaptations for the survival of populations, acting in camouflage, mimicry, sexual selection and thermoregulation. Atypical cases of coloration of taxa are also common, such as leucism, which is a hypopigmentary variation of the skin or fur, which occurs throughout or partially on the body. Leucism has been associated with environmental factors, such as anthropized habitat, low-quality diet, radioactive contamination and effects of anthropogenic actions. Likewise, individuals with leucism are more frequent in small and isolated populations since inbreeding increases the possibility of recessive alleles being expressed. Despite the few records, several cases have been documented in rodents over time. During April and May 2020, the activity of a gopher with total leucism that inhabited a niche fragmented by a residential villa and a golf course was monitored. This work presents the first known case of leucism in Cratogeomys merriami for the State of Mexico.

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