Evolutionary trade-offs between male secondary sexual traits revealed by a phylogeny of the hyperdiverse tribe Eumaeini (Lepidoptera: Lycaenidae)
(2021) In Proceedings of the Royal Society B: Biological Sciences 288(1950).- Abstract
Male butterflies in the hyperdiverse tribe Eumaeini possess an unusually complex and diverse repertoire of secondary sexual characteristics involved in pheromone production and dissemination. Maintaining multiple sexually selected traits is likely to be metabolically costly, potentially resulting in trade-offs in the evolution of male signals. However, a phylogenetic framework to test hypotheses regarding the evolution and maintenance of male sexual traits in Eumaeini has been lacking. Here, we infer a comprehensive, time-calibrated phylogeny from 379 loci for 187 species representing 91% of the 87 described genera. Eumaeini is a monophyletic group that originated in the late Oligocene and underwent rapid radiation in the Neotropics. We... (More)
Male butterflies in the hyperdiverse tribe Eumaeini possess an unusually complex and diverse repertoire of secondary sexual characteristics involved in pheromone production and dissemination. Maintaining multiple sexually selected traits is likely to be metabolically costly, potentially resulting in trade-offs in the evolution of male signals. However, a phylogenetic framework to test hypotheses regarding the evolution and maintenance of male sexual traits in Eumaeini has been lacking. Here, we infer a comprehensive, time-calibrated phylogeny from 379 loci for 187 species representing 91% of the 87 described genera. Eumaeini is a monophyletic group that originated in the late Oligocene and underwent rapid radiation in the Neotropics. We examined specimens of 818 of the 1096 described species (75%) and found that secondary sexual traits are present in males of 91% of the surveyed species. Scent pads and scent patches on the wings and brush organs associated with the genitalia were probably present in the common ancestor of Eumaeini and are widespread throughout the tribe. Brush organs and scent pads are negatively correlated across the phylogeny, exhibiting a trade-off in which lineages with brush organs are unlikely to regain scent pads and vice versa. In contrast, scent patches seem to facilitate the evolution of scent pads, although they are readily lost once scent pads have evolved. Our results illustrate the complex interplay between natural and sexual selection in the origin and maintenance of multiple male secondary sexual characteristics and highlight the potential role of sexual selection spurring diversification in this lineage.
(Less)
- author
- Valencia-Montoya, Wendy A.
; Quental, Tiago B.
; Tonini, João Filipe R.
; Talavera, Gerard
; Crall, James D.
; Lamas, Gerardo
; Busby, Robert C.
; Carvalho, Ana Paula S.
; Morais, Ana B.
; Oliveira Mega, Nicolás
; Romanowski, Helena Piccoli
; Liénard, Marjorie A.
LU
; Salzman, Shayla
; Whitaker, Melissa R.L.
; Kawahara, Akito Y.
; Lohman, David J.
; Robbins, Robert K.
and Pierce, Naomi E.
(Less) - organization
- publishing date
- 2021-05-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- brush organ, insect phylogenetics, scent pad, scent patch, sexual selection
- in
- Proceedings of the Royal Society B: Biological Sciences
- volume
- 288
- issue
- 1950
- article number
- 20202512
- publisher
- Royal Society Publishing
- external identifiers
-
- scopus:85105767750
- pmid:33975481
- ISSN
- 1471-2954
- DOI
- 10.1098/rspb.2020.2512
- language
- English
- LU publication?
- yes
- id
- 6aa5d067-e334-4aa3-9981-2db7214c2da1
- date added to LUP
- 2021-06-01 10:33:32
- date last changed
- 2024-06-15 11:51:52
@article{6aa5d067-e334-4aa3-9981-2db7214c2da1,
abstract = {{<p>Male butterflies in the hyperdiverse tribe Eumaeini possess an unusually complex and diverse repertoire of secondary sexual characteristics involved in pheromone production and dissemination. Maintaining multiple sexually selected traits is likely to be metabolically costly, potentially resulting in trade-offs in the evolution of male signals. However, a phylogenetic framework to test hypotheses regarding the evolution and maintenance of male sexual traits in Eumaeini has been lacking. Here, we infer a comprehensive, time-calibrated phylogeny from 379 loci for 187 species representing 91% of the 87 described genera. Eumaeini is a monophyletic group that originated in the late Oligocene and underwent rapid radiation in the Neotropics. We examined specimens of 818 of the 1096 described species (75%) and found that secondary sexual traits are present in males of 91% of the surveyed species. Scent pads and scent patches on the wings and brush organs associated with the genitalia were probably present in the common ancestor of Eumaeini and are widespread throughout the tribe. Brush organs and scent pads are negatively correlated across the phylogeny, exhibiting a trade-off in which lineages with brush organs are unlikely to regain scent pads and vice versa. In contrast, scent patches seem to facilitate the evolution of scent pads, although they are readily lost once scent pads have evolved. Our results illustrate the complex interplay between natural and sexual selection in the origin and maintenance of multiple male secondary sexual characteristics and highlight the potential role of sexual selection spurring diversification in this lineage.</p>}},
author = {{Valencia-Montoya, Wendy A. and Quental, Tiago B. and Tonini, João Filipe R. and Talavera, Gerard and Crall, James D. and Lamas, Gerardo and Busby, Robert C. and Carvalho, Ana Paula S. and Morais, Ana B. and Oliveira Mega, Nicolás and Romanowski, Helena Piccoli and Liénard, Marjorie A. and Salzman, Shayla and Whitaker, Melissa R.L. and Kawahara, Akito Y. and Lohman, David J. and Robbins, Robert K. and Pierce, Naomi E.}},
issn = {{1471-2954}},
keywords = {{brush organ; insect phylogenetics; scent pad; scent patch; sexual selection}},
language = {{eng}},
month = {{05}},
number = {{1950}},
publisher = {{Royal Society Publishing}},
series = {{Proceedings of the Royal Society B: Biological Sciences}},
title = {{Evolutionary trade-offs between male secondary sexual traits revealed by a phylogeny of the hyperdiverse tribe Eumaeini (Lepidoptera: Lycaenidae)}},
url = {{http://dx.doi.org/10.1098/rspb.2020.2512}},
doi = {{10.1098/rspb.2020.2512}},
volume = {{288}},
year = {{2021}},
}