Cargando…

Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila

The examination of phylogenetic and phenotypic characteristics of the nervous system, such as behavior and neuroanatomy, can be utilized as a means to assess speciation. Recent studies have proposed a fundamental tradeoff between two sensory organs, the eye and the antenna. However, the identificati...

Descripción completa

Detalles Bibliográficos
Autores principales: Keesey, Ian W, Grabe, Veit, Knaden, Markus, Hansson, Bill S
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7402680/
https://www.ncbi.nlm.nih.gov/pubmed/32602834
http://dx.doi.org/10.7554/eLife.57008
_version_ 1783566803756122112
author Keesey, Ian W
Grabe, Veit
Knaden, Markus
Hansson, Bill S
author_facet Keesey, Ian W
Grabe, Veit
Knaden, Markus
Hansson, Bill S
author_sort Keesey, Ian W
collection PubMed
description The examination of phylogenetic and phenotypic characteristics of the nervous system, such as behavior and neuroanatomy, can be utilized as a means to assess speciation. Recent studies have proposed a fundamental tradeoff between two sensory organs, the eye and the antenna. However, the identification of ecological mechanisms for this observed tradeoff have not been firmly established. Our current study examines several monophyletic species within the obscura group, and asserts that despite their close relatedness and overlapping ecology, they deviate strongly in both visual and olfactory investment. We contend that both courtship and microhabitat preferences support the observed inverse variation in these sensory traits. Here, this variation in visual and olfactory investment seems to provide relaxed competition, a process by which similar species can use a shared environment differently and in ways that help them coexist. Moreover, that behavioral separation according to light gradients occurs first, and subsequently, courtship deviations arise.
format Online
Article
Text
id pubmed-7402680
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher eLife Sciences Publications, Ltd
record_format MEDLINE/PubMed
spelling pubmed-74026802020-08-06 Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila Keesey, Ian W Grabe, Veit Knaden, Markus Hansson, Bill S eLife Evolutionary Biology The examination of phylogenetic and phenotypic characteristics of the nervous system, such as behavior and neuroanatomy, can be utilized as a means to assess speciation. Recent studies have proposed a fundamental tradeoff between two sensory organs, the eye and the antenna. However, the identification of ecological mechanisms for this observed tradeoff have not been firmly established. Our current study examines several monophyletic species within the obscura group, and asserts that despite their close relatedness and overlapping ecology, they deviate strongly in both visual and olfactory investment. We contend that both courtship and microhabitat preferences support the observed inverse variation in these sensory traits. Here, this variation in visual and olfactory investment seems to provide relaxed competition, a process by which similar species can use a shared environment differently and in ways that help them coexist. Moreover, that behavioral separation according to light gradients occurs first, and subsequently, courtship deviations arise. eLife Sciences Publications, Ltd 2020-06-30 /pmc/articles/PMC7402680/ /pubmed/32602834 http://dx.doi.org/10.7554/eLife.57008 Text en © 2020, Keesey et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Evolutionary Biology
Keesey, Ian W
Grabe, Veit
Knaden, Markus
Hansson, Bill S
Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title_full Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title_fullStr Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title_full_unstemmed Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title_short Divergent sensory investment mirrors potential speciation via niche partitioning across Drosophila
title_sort divergent sensory investment mirrors potential speciation via niche partitioning across drosophila
topic Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7402680/
https://www.ncbi.nlm.nih.gov/pubmed/32602834
http://dx.doi.org/10.7554/eLife.57008
work_keys_str_mv AT keeseyianw divergentsensoryinvestmentmirrorspotentialspeciationvianichepartitioningacrossdrosophila
AT grabeveit divergentsensoryinvestmentmirrorspotentialspeciationvianichepartitioningacrossdrosophila
AT knadenmarkus divergentsensoryinvestmentmirrorspotentialspeciationvianichepartitioningacrossdrosophila
AT hanssonbills divergentsensoryinvestmentmirrorspotentialspeciationvianichepartitioningacrossdrosophila