A molecular phylogeny of forktail damselflies (genus Ischnura) reveals a dynamic macroevolutionary history of female colour polymorphisms
Blow, Rachel LU ; Willink, Beatriz and Svensson, Erik I. LU
(2021)
In Molecular Phylogenetics and Evolution
160.
- Abstract
Colour polymorphisms are popular study systems among biologists interested in evolutionary dynamics, genomics, sexual selection and sexual conflict. In many damselfly groups, such as in the globally distributed genus Ischnura (forktails), sex-limited female colour polymorphisms occur in multiple species. Female-polymorphic species contain two or three female morphs, one of which phenotypically matches the male (androchrome or male mimic) and the other(s) which are phenotypically distinct from the male (heterochrome). These female colour polymorphisms are thought to be maintained by frequency-dependent sexual conflict, but their macroevolutionary histories are unknown, due to the lack of a robust molecular phylogeny. Here, we present the... (More)
Colour polymorphisms are popular study systems among biologists interested in evolutionary dynamics, genomics, sexual selection and sexual conflict. In many damselfly groups, such as in the globally distributed genus Ischnura (forktails), sex-limited female colour polymorphisms occur in multiple species. Female-polymorphic species contain two or three female morphs, one of which phenotypically matches the male (androchrome or male mimic) and the other(s) which are phenotypically distinct from the male (heterochrome). These female colour polymorphisms are thought to be maintained by frequency-dependent sexual conflict, but their macroevolutionary histories are unknown, due to the lack of a robust molecular phylogeny. Here, we present the first time-calibrated phylogeny of Ischnura, using a multispecies coalescent approach (StarBEAST2) and incorporating both molecular and fossil data for 41 extant species (55% of the genus). We estimate the age of Ischnura to be between 13.8 and 23.4 millions of years, i.e. Miocene. We infer the ancestral state of this genus as female monomorphism with heterochrome females, with multiple gains and losses of female polymorphisms, evidence of trans-species female polymorphisms and a significant positive relationship between female polymorphism incidence and current geographic range size. Our study provides a robust phylogenetic framework for future research on the dynamic macroevolutionary history of this clade with its extraordinary diversity of sex-limited female polymorphisms.
(Less)
- author
- Blow, Rachel
LU
; Willink, Beatriz
and Svensson, Erik I.
LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Ancestral state reconstruction, Geographic range, Morphic speciation, Sexual conflict, StarBEAST2, Trans-species polymorphism
- in
- Molecular Phylogenetics and Evolution
- volume
- 160
- article number
- 107134
- publisher
- Elsevier
- external identifiers
-
- scopus:85102807133
- pmid:33677008
- ISSN
- 1055-7903
- DOI
- 10.1016/j.ympev.2021.107134
- language
- English
- LU publication?
- yes
- id
- 83b2618b-0865-4a31-8218-c588b80d072a
- date added to LUP
- 2021-03-30 11:19:54
- date last changed
- 2024-06-16 11:30:06
@article{83b2618b-0865-4a31-8218-c588b80d072a,
abstract = {{<p>Colour polymorphisms are popular study systems among biologists interested in evolutionary dynamics, genomics, sexual selection and sexual conflict. In many damselfly groups, such as in the globally distributed genus Ischnura (forktails), sex-limited female colour polymorphisms occur in multiple species. Female-polymorphic species contain two or three female morphs, one of which phenotypically matches the male (androchrome or male mimic) and the other(s) which are phenotypically distinct from the male (heterochrome). These female colour polymorphisms are thought to be maintained by frequency-dependent sexual conflict, but their macroevolutionary histories are unknown, due to the lack of a robust molecular phylogeny. Here, we present the first time-calibrated phylogeny of Ischnura, using a multispecies coalescent approach (StarBEAST2) and incorporating both molecular and fossil data for 41 extant species (55% of the genus). We estimate the age of Ischnura to be between 13.8 and 23.4 millions of years, i.e. Miocene. We infer the ancestral state of this genus as female monomorphism with heterochrome females, with multiple gains and losses of female polymorphisms, evidence of trans-species female polymorphisms and a significant positive relationship between female polymorphism incidence and current geographic range size. Our study provides a robust phylogenetic framework for future research on the dynamic macroevolutionary history of this clade with its extraordinary diversity of sex-limited female polymorphisms.</p>}},
author = {{Blow, Rachel and Willink, Beatriz and Svensson, Erik I.}},
issn = {{1055-7903}},
keywords = {{Ancestral state reconstruction; Geographic range; Morphic speciation; Sexual conflict; StarBEAST2; Trans-species polymorphism}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Molecular Phylogenetics and Evolution}},
title = {{A molecular phylogeny of forktail damselflies (genus Ischnura) reveals a dynamic macroevolutionary history of female colour polymorphisms}},
url = {{http://dx.doi.org/10.1016/j.ympev.2021.107134}},
doi = {{10.1016/j.ympev.2021.107134}},
volume = {{160}},
year = {{2021}},
}