The Role of Sexual Selection in the Evolution of Chemical Signals in Insects

Chemical communication is the most ancient and widespread form of communication. Yet we are only beginning to grasp the complexity of chemical signals and the role they play in sexual selection. Focusing on insects, we review here the recent progress in the field of olfactory-based sexual selection....

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Main Authors: Sandra Steiger, Johannes Stökl
Format: Article
Language:English
Published: MDPI AG 2014-06-01
Series:Insects
Subjects:
Online Access:http://www.mdpi.com/2075-4450/5/2/423
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author Sandra Steiger
Johannes Stökl
author_facet Sandra Steiger
Johannes Stökl
author_sort Sandra Steiger
collection DOAJ
description Chemical communication is the most ancient and widespread form of communication. Yet we are only beginning to grasp the complexity of chemical signals and the role they play in sexual selection. Focusing on insects, we review here the recent progress in the field of olfactory-based sexual selection. We will show that there is mounting empirical evidence that sexual selection affects the evolution of chemical traits, but form and strength of selection differ between species. Studies indicate that some chemical signals are expressed in relation to an individual’s condition and depend, for example, on age, immunocompetence, fertility, body size or degree of inbreeding. Males or females might benefit by choosing based on those traits, gaining resources or “good genes”. Other chemical traits appear to reliably reflect an individual’s underlying genotype and are suitable to choose a mating partner that matches best the own genotype.
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spelling doaj.art-7dbcefe0bf2e42cabe91c3e2584a48f32022-12-22T00:54:25ZengMDPI AGInsects2075-44502014-06-015242343810.3390/insects5020423insects5020423The Role of Sexual Selection in the Evolution of Chemical Signals in InsectsSandra Steiger0Johannes Stökl1Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, GermanyInstitute of Zoology, University of Regensburg, Universitätstraße 31, 93053 Regensburg, GermanyChemical communication is the most ancient and widespread form of communication. Yet we are only beginning to grasp the complexity of chemical signals and the role they play in sexual selection. Focusing on insects, we review here the recent progress in the field of olfactory-based sexual selection. We will show that there is mounting empirical evidence that sexual selection affects the evolution of chemical traits, but form and strength of selection differ between species. Studies indicate that some chemical signals are expressed in relation to an individual’s condition and depend, for example, on age, immunocompetence, fertility, body size or degree of inbreeding. Males or females might benefit by choosing based on those traits, gaining resources or “good genes”. Other chemical traits appear to reliably reflect an individual’s underlying genotype and are suitable to choose a mating partner that matches best the own genotype.http://www.mdpi.com/2075-4450/5/2/423sexual selectionmate choicepheromonecommunicationchemical signal
spellingShingle Sandra Steiger
Johannes Stökl
The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
Insects
sexual selection
mate choice
pheromone
communication
chemical signal
title The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
title_full The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
title_fullStr The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
title_full_unstemmed The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
title_short The Role of Sexual Selection in the Evolution of Chemical Signals in Insects
title_sort role of sexual selection in the evolution of chemical signals in insects
topic sexual selection
mate choice
pheromone
communication
chemical signal
url http://www.mdpi.com/2075-4450/5/2/423
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