Cargando…

Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)

New World monkeys have polymorphic color vision, in which all males and some females are dichromats, while most females are trichromats. There is little consensus about which selective pressures fashioned primate color vision, although detection of food, mates and predators has been hypothesized. Be...

Descripción completa

Detalles Bibliográficos
Autores principales: Moreira, Laís Alves Antonio, de Oliveira, Danilo Gustavo Rodrigues, de Sousa, Maria Bernardete Cordeiro, Pessoa, Daniel Marques Almeida
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4457725/
https://www.ncbi.nlm.nih.gov/pubmed/26047350
http://dx.doi.org/10.1371/journal.pone.0129319
_version_ 1782374988691537920
author Moreira, Laís Alves Antonio
de Oliveira, Danilo Gustavo Rodrigues
de Sousa, Maria Bernardete Cordeiro
Pessoa, Daniel Marques Almeida
author_facet Moreira, Laís Alves Antonio
de Oliveira, Danilo Gustavo Rodrigues
de Sousa, Maria Bernardete Cordeiro
Pessoa, Daniel Marques Almeida
author_sort Moreira, Laís Alves Antonio
collection PubMed
description New World monkeys have polymorphic color vision, in which all males and some females are dichromats, while most females are trichromats. There is little consensus about which selective pressures fashioned primate color vision, although detection of food, mates and predators has been hypothesized. Behavioral evidence shows that males from different species of Neotropical primates seem to perceive the timing of female conception and gestation, although, no signals fulfilling this function have been identified. Therefore, we used visual models to test the hypothesis that female marmosets show chromatic and/or achromatic cues that may indicate the time of parturition for male and female conspecifics. By recording the reflectance spectra of female marmosets’ (Callithrix jacchus) sexual skin, and running chromatic and achromatic discrimination models, we found that both variables fluctuate during the weeks that precede and succeed parturition, forming “U” and inverted “U” patterns for chromatic and achromatic contrast, respectively. We suggest that variation in skin chroma and luminance might be used by female helpers and dominant females to identify the timing of birth, while achromatic variations may be used as clues by potential fathers to identify pregnancy stage in females and prepare for paternal burdens as well as to detect oestrus in the early post-partum period.
format Online
Article
Text
id pubmed-4457725
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-44577252015-06-09 Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus) Moreira, Laís Alves Antonio de Oliveira, Danilo Gustavo Rodrigues de Sousa, Maria Bernardete Cordeiro Pessoa, Daniel Marques Almeida PLoS One Research Article New World monkeys have polymorphic color vision, in which all males and some females are dichromats, while most females are trichromats. There is little consensus about which selective pressures fashioned primate color vision, although detection of food, mates and predators has been hypothesized. Behavioral evidence shows that males from different species of Neotropical primates seem to perceive the timing of female conception and gestation, although, no signals fulfilling this function have been identified. Therefore, we used visual models to test the hypothesis that female marmosets show chromatic and/or achromatic cues that may indicate the time of parturition for male and female conspecifics. By recording the reflectance spectra of female marmosets’ (Callithrix jacchus) sexual skin, and running chromatic and achromatic discrimination models, we found that both variables fluctuate during the weeks that precede and succeed parturition, forming “U” and inverted “U” patterns for chromatic and achromatic contrast, respectively. We suggest that variation in skin chroma and luminance might be used by female helpers and dominant females to identify the timing of birth, while achromatic variations may be used as clues by potential fathers to identify pregnancy stage in females and prepare for paternal burdens as well as to detect oestrus in the early post-partum period. Public Library of Science 2015-06-05 /pmc/articles/PMC4457725/ /pubmed/26047350 http://dx.doi.org/10.1371/journal.pone.0129319 Text en © 2015 Moreira et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Moreira, Laís Alves Antonio
de Oliveira, Danilo Gustavo Rodrigues
de Sousa, Maria Bernardete Cordeiro
Pessoa, Daniel Marques Almeida
Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title_full Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title_fullStr Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title_full_unstemmed Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title_short Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
title_sort parturition signaling by visual cues in female marmosets (callithrix jacchus)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4457725/
https://www.ncbi.nlm.nih.gov/pubmed/26047350
http://dx.doi.org/10.1371/journal.pone.0129319
work_keys_str_mv AT moreiralaisalvesantonio parturitionsignalingbyvisualcuesinfemalemarmosetscallithrixjacchus
AT deoliveiradanilogustavorodrigues parturitionsignalingbyvisualcuesinfemalemarmosetscallithrixjacchus
AT desousamariabernardetecordeiro parturitionsignalingbyvisualcuesinfemalemarmosetscallithrixjacchus
AT pessoadanielmarquesalmeida parturitionsignalingbyvisualcuesinfemalemarmosetscallithrixjacchus