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Male vervet monkey with blue gear
Male vervet monkey (Chlorocebus pygerythrus) perched on Large-fruited Bushwillow tree and exhibiting proudly its bright turquoise blue scrotum. The blue colour is due to Tyndall light scattering effect over a layer of melanin in the dermis of the scrotum. The vividness of the blue pales when the animal falls in social rank.
Source: DOI: 10.1159/000459974
Digital image ID: Micheline_Rouquet_20160418_006381
Author: Micheline Rouquet
© Micheline Rouquet
Digital image size: 16.0 Mpixels (45.8 MB uncompressed) - 4000x4000 pixels (13.3x13.3 in / 33.9x33.9 cm at 300 ppi)
Digital image keywords: Behavior, blue scrotum, Botswana, Chlorocebus pygerythrus, Kwedi concession, male vervet monkey, Mammals, Moremi Game Reserve, Old World monkeys, Postures, primates, social rank, Tyndall light scattering effect, vervet monkeys
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