Does genetic diversity limit disease spread in natural host populations?

It is a commonly held view that genetically homogenous host populations are more vulnerable to infection than genetically diverse populations. The underlying idea, known as the 'monoculture effect,' is well documented in agricultural studies. Low genetic diversity in the wild can result fr...

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Main Authors: King, K, Lively, C
Format: Journal article
Language:English
Published: 2012
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author King, K
Lively, C
author_facet King, K
Lively, C
author_sort King, K
collection OXFORD
description It is a commonly held view that genetically homogenous host populations are more vulnerable to infection than genetically diverse populations. The underlying idea, known as the 'monoculture effect,' is well documented in agricultural studies. Low genetic diversity in the wild can result from bottlenecks (that is, founder effects), biparental inbreeding or self-fertilization, any of which might increase the risk of epidemics. Host genetic diversity could buffer populations against epidemics in nature, but it is not clear how much diversity is required to prevent disease spread. Recent theoretical and empirical studies, particularly in Daphnia populations, have helped to establish that genetic diversity can reduce parasite transmission. Here, we review the present theoretical work and empirical evidence, and we suggest a new focus on finding 'diversity thresholds.'
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spelling oxford-uuid:82bbdffc-b01a-4f87-bd66-1deb15f3de182022-03-26T21:39:22ZDoes genetic diversity limit disease spread in natural host populations?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:82bbdffc-b01a-4f87-bd66-1deb15f3de18EnglishSymplectic Elements at Oxford2012King, KLively, CIt is a commonly held view that genetically homogenous host populations are more vulnerable to infection than genetically diverse populations. The underlying idea, known as the 'monoculture effect,' is well documented in agricultural studies. Low genetic diversity in the wild can result from bottlenecks (that is, founder effects), biparental inbreeding or self-fertilization, any of which might increase the risk of epidemics. Host genetic diversity could buffer populations against epidemics in nature, but it is not clear how much diversity is required to prevent disease spread. Recent theoretical and empirical studies, particularly in Daphnia populations, have helped to establish that genetic diversity can reduce parasite transmission. Here, we review the present theoretical work and empirical evidence, and we suggest a new focus on finding 'diversity thresholds.'
spellingShingle King, K
Lively, C
Does genetic diversity limit disease spread in natural host populations?
title Does genetic diversity limit disease spread in natural host populations?
title_full Does genetic diversity limit disease spread in natural host populations?
title_fullStr Does genetic diversity limit disease spread in natural host populations?
title_full_unstemmed Does genetic diversity limit disease spread in natural host populations?
title_short Does genetic diversity limit disease spread in natural host populations?
title_sort does genetic diversity limit disease spread in natural host populations
work_keys_str_mv AT kingk doesgeneticdiversitylimitdiseasespreadinnaturalhostpopulations
AT livelyc doesgeneticdiversitylimitdiseasespreadinnaturalhostpopulations