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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
eLife Sciences Publications, Ltd
2020
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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 |
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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 |
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