Uniform trichromacy in Alouatta caraya and Alouatta seniculus: behavioural and genetic colour vision evaluation

Autor(es)

Henriques, Leonardo Dutra ^[1] ; Hauzman, Einat ^{[2, 1]} ; Oliveira Bonci, Daniela Maria ^[1] ; Chang, Belinda S. W. ^[3] ; Pereira Carneiro Muniz, Jose Augusto ^[4] ; Souza, Givago da Silva ^{[5, 6]} ; de Lima Silveira, Luiz Carlos ^{[5, 6]} ; Galvao, Olavo de Faria ^[7] ; Kilpp Goulart, Paulo Roney ^[7] ; Ventura, Dora Fix ^{[2, 1]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Psicol, Dept Psicol Expt, Sao Paulo - Brazil

^[2] Hosp Israelita Albert Einstein, Inst Ensino & Pesquisa, Sao Paulo - Brazil

^[3] Univ Toronto, Dept Cell & Syst Biol, Toronto, ON - Canada

^[4] Minist Saude, Ctr Nacl Primatas, Inst Evandro Chagas, Ananindeua, Para - Brazil

^[5] Univ Fed Para, Inst Ciencias Biol, Belem, Para - Brazil

^[6] Univ Fed Para, Nucleo Med Trop, Belem, Para - Brazil

^[7] Univ Fed Para, Nucleo Teoria & Pesquisa Comportamento, Belem, Para - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Frontiers in Zoology; v. 18, n. 1 JUL 8 2021.
• Citações Web of Science: 0

Resumo

Primate colour vision depends on a matrix of photoreceptors, a neuronal post receptoral structure and a combination of genes that culminate in different sensitivity through the visual spectrum. Along with a common cone opsin gene for short wavelengths (sws1), Neotropical primates (Platyrrhini) have only one cone opsin gene for medium-long wavelengths (mws/lws) per X chromosome while Paleotropical primates (Catarrhini), including humans, have two active genes. Therefore, while female platyrrhines may be trichromats, males are always dichromats. The genus Alouatta is inferred to be an exception to this rule, as electrophysiological, behavioural and molecular analyses indicated a potential for male trichromacy in this genus. However, it is very important to ascertain by a combination of genetic and behavioural analyses whether this potential translates in terms of colour discrimination capability. We evaluated two howler monkeys (Alouatta spp.), one male A. caraya and one female A. seniculus, using a combination of genetic analysis of the opsin gene sequences and a behavioral colour discrimination test not previously used in this genus. Both individuals completed the behavioural test with performances typical of trichromatic colour vision and the genetic analysis of the swsl, mws, and Iws opsin genes revealed three different opsin sequences in both subjects. These results are consistent with uniform trichromacy in both male and female, with presumed spectral sensitivity peaks similar to Catarrhini, at similar to 430 nm, 532 nm, and 563 nm for S-, M- and L-cones, respectively. (AU)

• Processo FAPESP: 18/09321-8 - Expressão in vitro e medidas de absorção espectral do fotopigmento SWS1 da serpente colubridea Helicops modestus
• Beneficiário: Einat Hauzman
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 19/14606-4 - Estudos sobre tricromacia anômala em humanos e primatas não-humanos por via de um teste computadorizado de discriminação de cores e análise genética de genes para opsinas.
• Beneficiário: Leonardo Dutra Henriques
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/26818-2 - Desenvolvimento e implantação de métodos de avaliação visual: aplicações clínicas e em modelos animais
• Beneficiário: Dora Selma Fix Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 14/25743-9 - Expressão de opsinas e melanopsinas em retinas de serpentes: genética molecular e imunohistoquímica
• Beneficiário: Einat Hauzman
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado