Multiple phenotypes conferred by a single insect symbiont are independent

Many microbial symbionts have multiple phenotypic consequences for their animal hosts. However, the ways in which different symbiont-mediated phenotypes combine to affect fitness are not well understood. We investigated whether there are correlations between different symbiont-mediated phenotypes. W...

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Main Authors: McLean, AHC, Hrček, J, Parker, BJ, Mathé-Hubert, H, Kaech, H, Paine, C, Godfray, HCJ
Format: Journal article
Language:English
Published: Royal Society 2020
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author McLean, AHC
Hrček, J
Parker, BJ
Mathé-Hubert, H
Kaech, H
Paine, C
Godfray, HCJ
author_facet McLean, AHC
Hrček, J
Parker, BJ
Mathé-Hubert, H
Kaech, H
Paine, C
Godfray, HCJ
author_sort McLean, AHC
collection OXFORD
description Many microbial symbionts have multiple phenotypic consequences for their animal hosts. However, the ways in which different symbiont-mediated phenotypes combine to affect fitness are not well understood. We investigated whether there are correlations between different symbiont-mediated phenotypes. We used the symbiont Spiroplasma, a striking example of a bacterial symbiont conferring diverse phenotypes on insect hosts. We took 11 strains of Spiroplasma infecting pea aphids (Acyrthosiphon pisum) and assessed their ability to provide protection against the fungal pathogen Pandora neoaphidis and the parasitoids Aphidius ervi and Praon volucre. We also assessed effects on male offspring production for five of the Spiroplasma strains. All but one of the Spiroplasma strains provided very strong protection against the parasitoid P. volucre. As previously reported, variable protection against P. neoaphidis and A. ervi was also present; male-killing was likewise a variable phenotype. We find no evidence of any correlation, positive or negative, between the different phenotypes, nor was there any evidence of an effect of symbiont phylogeny on protective phenotype. We conclude that multiple symbiont-mediated phenotypes can evolve independently from one another without trade-offs between them.
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spelling oxford-uuid:0c334d6e-9580-42e6-ad9e-b924577d713e2022-03-26T09:33:38ZMultiple phenotypes conferred by a single insect symbiont are independentJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0c334d6e-9580-42e6-ad9e-b924577d713eEnglishSymplectic ElementsRoyal Society2020McLean, AHCHrček, JParker, BJMathé-Hubert, HKaech, HPaine, CGodfray, HCJMany microbial symbionts have multiple phenotypic consequences for their animal hosts. However, the ways in which different symbiont-mediated phenotypes combine to affect fitness are not well understood. We investigated whether there are correlations between different symbiont-mediated phenotypes. We used the symbiont Spiroplasma, a striking example of a bacterial symbiont conferring diverse phenotypes on insect hosts. We took 11 strains of Spiroplasma infecting pea aphids (Acyrthosiphon pisum) and assessed their ability to provide protection against the fungal pathogen Pandora neoaphidis and the parasitoids Aphidius ervi and Praon volucre. We also assessed effects on male offspring production for five of the Spiroplasma strains. All but one of the Spiroplasma strains provided very strong protection against the parasitoid P. volucre. As previously reported, variable protection against P. neoaphidis and A. ervi was also present; male-killing was likewise a variable phenotype. We find no evidence of any correlation, positive or negative, between the different phenotypes, nor was there any evidence of an effect of symbiont phylogeny on protective phenotype. We conclude that multiple symbiont-mediated phenotypes can evolve independently from one another without trade-offs between them.
spellingShingle McLean, AHC
Hrček, J
Parker, BJ
Mathé-Hubert, H
Kaech, H
Paine, C
Godfray, HCJ
Multiple phenotypes conferred by a single insect symbiont are independent
title Multiple phenotypes conferred by a single insect symbiont are independent
title_full Multiple phenotypes conferred by a single insect symbiont are independent
title_fullStr Multiple phenotypes conferred by a single insect symbiont are independent
title_full_unstemmed Multiple phenotypes conferred by a single insect symbiont are independent
title_short Multiple phenotypes conferred by a single insect symbiont are independent
title_sort multiple phenotypes conferred by a single insect symbiont are independent
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