Cargando…

An atypical mating system in a neotropical manakin

Most of the diversity in the mating systems of birds and other animals comes at higher taxonomic levels, such as across orders. Although divergent selective pressures should lead to animal mating systems that diverge sharply from those of close relatives, opportunities to examine the importance of s...

Descripción completa

Detalles Bibliográficos
Autores principales: Gaiotti, Milene G., Webster, Michael S., Macedo, Regina H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7029923/
https://www.ncbi.nlm.nih.gov/pubmed/32218973
http://dx.doi.org/10.1098/rsos.191548
_version_ 1783499258317504512
author Gaiotti, Milene G.
Webster, Michael S.
Macedo, Regina H.
author_facet Gaiotti, Milene G.
Webster, Michael S.
Macedo, Regina H.
author_sort Gaiotti, Milene G.
collection PubMed
description Most of the diversity in the mating systems of birds and other animals comes at higher taxonomic levels, such as across orders. Although divergent selective pressures should lead to animal mating systems that diverge sharply from those of close relatives, opportunities to examine the importance of such processes are scarce. We addressed this issue using the Araripe manakin (Antilophia bokermanni), a species endemic to a forest enclave surrounded by xeric shrublands in Brazil. Most manakins exhibit polygynous lekking mating systems that lack territoriality but exhibit strong sexual selection. In sharp contrast, we found that male Araripe manakins defended exclusive territories, and females nested within male territories. However, territoriality and offspring paternity were dissociated: males sired only 7% of nestlings from the nests within their territories and non-territorial males sired numerous nestlings. Moreover, female polyandry was widespread, with most broods exhibiting mixed paternity. Apparently, territories in this species function differently from both lekking arenas and resource-based territories of socially monogamous species. The unexpected territoriality of Araripe manakins and its dissociation from paternity is a unique evolutionary development within the manakin clade. Collectively, our findings underscore how divergences in mating systems might evolve based on selective pressures from novel environmental contexts.
format Online
Article
Text
id pubmed-7029923
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher The Royal Society
record_format MEDLINE/PubMed
spelling pubmed-70299232020-03-26 An atypical mating system in a neotropical manakin Gaiotti, Milene G. Webster, Michael S. Macedo, Regina H. R Soc Open Sci Organismal and Evolutionary Biology Most of the diversity in the mating systems of birds and other animals comes at higher taxonomic levels, such as across orders. Although divergent selective pressures should lead to animal mating systems that diverge sharply from those of close relatives, opportunities to examine the importance of such processes are scarce. We addressed this issue using the Araripe manakin (Antilophia bokermanni), a species endemic to a forest enclave surrounded by xeric shrublands in Brazil. Most manakins exhibit polygynous lekking mating systems that lack territoriality but exhibit strong sexual selection. In sharp contrast, we found that male Araripe manakins defended exclusive territories, and females nested within male territories. However, territoriality and offspring paternity were dissociated: males sired only 7% of nestlings from the nests within their territories and non-territorial males sired numerous nestlings. Moreover, female polyandry was widespread, with most broods exhibiting mixed paternity. Apparently, territories in this species function differently from both lekking arenas and resource-based territories of socially monogamous species. The unexpected territoriality of Araripe manakins and its dissociation from paternity is a unique evolutionary development within the manakin clade. Collectively, our findings underscore how divergences in mating systems might evolve based on selective pressures from novel environmental contexts. The Royal Society 2020-01-08 /pmc/articles/PMC7029923/ /pubmed/32218973 http://dx.doi.org/10.1098/rsos.191548 Text en © 2020 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Organismal and Evolutionary Biology
Gaiotti, Milene G.
Webster, Michael S.
Macedo, Regina H.
An atypical mating system in a neotropical manakin
title An atypical mating system in a neotropical manakin
title_full An atypical mating system in a neotropical manakin
title_fullStr An atypical mating system in a neotropical manakin
title_full_unstemmed An atypical mating system in a neotropical manakin
title_short An atypical mating system in a neotropical manakin
title_sort atypical mating system in a neotropical manakin
topic Organismal and Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7029923/
https://www.ncbi.nlm.nih.gov/pubmed/32218973
http://dx.doi.org/10.1098/rsos.191548
work_keys_str_mv AT gaiottimileneg anatypicalmatingsysteminaneotropicalmanakin
AT webstermichaels anatypicalmatingsysteminaneotropicalmanakin
AT macedoreginah anatypicalmatingsysteminaneotropicalmanakin
AT gaiottimileneg atypicalmatingsysteminaneotropicalmanakin
AT webstermichaels atypicalmatingsysteminaneotropicalmanakin
AT macedoreginah atypicalmatingsysteminaneotropicalmanakin