Flora e fauna um dossiê ambiental

Uieda, Wilson; Paleari, Lucia Maria

doi:10.7476/9788539303076

Cited by 2 publications

(1 citation statement)

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“…It is currently unknown whether the red coat has any selective (dis)advantages, such as decreased (or increased) visibility by prey (Turner, Vasicek, & Somers, 2015). Generally, coat colour variations such as albinism are considered a major disadvantage to animals in the wild, foremost due to decreased concealment and camouflage (Acevedo et al, 2009;Uieda, 2000). Albino animals are also disadvantaged due to a lack of pigment in the eyes, which causes visual impairment and makes it harder for animals to find prey (Miller, 2005).…”

Section: Discussionmentioning

confidence: 99%

Molecular tracking and prevalence of the red colour morph restricted to a harvested leopard population in South Africa

Tensen,

Camacho,

Power

et al. 2024

Preprint

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The red leopard (Panthera pardus) colour morph is a colour variant that occurs only in South Africa, where it is confined to the Central Bushveld bioregion. Red leopards have been spreading over the past 40 years, which raises the speculation that the prevalence of this phenotype is related to low dispersal of young individuals owing to high off-take in the region. Intensive selective hunting tends to remove large resident males from the breeding population, which gives young males the chance to mate with resident females that are more likely to be their relatives, eventually increasing the frequency of rare genetic variants. To investigate the genetic mechanisms underlying the red coat colour morph in leopards, and whether its prevalence in South Africa relates to an increase in genetic relatedness in the population, we sequenced exons of six colour coat associated genes and 20 microsatellite loci in twenty wild-type and four red leopards. The results were combined with demographic data available from our study sites. We found that red leopards own a haplotype in homozygosity identified by one non-synonymous SNP and a 1 bp deletion that causes a frameshift in the Tyrosinase Related Protein 1 (TYRP1), a gene known to be involved in the biosynthesis of melanin. Microsatellite analyses indicate clear signs of a population bottleneck and a relatedness of 0.11 among all pairwise relationships, eventually supporting our hypothesis that a rare colour morph in the wild has increased its local frequency due to low natal dispersal. This was backed by a high human-induced mortality rate (40%).

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Section: Discussionmentioning

confidence: 99%