The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles

Abstract Selfish genetic elements have been found in the genomes of many species, yet our understanding of their evolutionary dynamics is only partially understood. A number of distinct selfish Medea elements are naturally present in many populations of the red flour beetle (Tribolium castaneum). Al...

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Autores principales: Sarah A. Cash, Michael A. Robert, Marcé D. Lorenzen, Fred Gould
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Publicado: Wiley 2020
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spelling oai:doaj.org-article:4bba5c23d0a24a4f8cd64d5516a058432021-11-04T13:06:09ZThe impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles2045-775810.1002/ece3.5946https://doaj.org/article/4bba5c23d0a24a4f8cd64d5516a058432020-01-01T00:00:00Zhttps://doi.org/10.1002/ece3.5946https://doaj.org/toc/2045-7758Abstract Selfish genetic elements have been found in the genomes of many species, yet our understanding of their evolutionary dynamics is only partially understood. A number of distinct selfish Medea elements are naturally present in many populations of the red flour beetle (Tribolium castaneum). Although these Medea elements are predicted by models to increase in frequency within populations because any offspring of a Medea‐bearing mother that do not inherit at least one Medea allele will die, experiments demonstrating an increase in a naturally occurring Medea element are lacking. Our survey of the specific Medea element, M1, in the United States showed that it had a patchy geographic distribution. From the survey, it could not be determined if this distribution was caused by a slow process of M1 colonization of discrete populations or if some populations lacked M1 because they had genetic factors conferring resistance to the Medea mechanism. We show that populations with naturally low to intermediate M1 frequencies likely represent transient states during the process of Medea spread. Furthermore, we find no evidence that genetic factors are excluding M1 from US populations where the element is not presently found. We also show how a known suppressor of Medea can impair the increase of M1 in populations and discuss the implications of our findings for pest‐management applications of Medea elements.Sarah A. CashMichael A. RobertMarcé D. LorenzenFred GouldWileyarticlegene drivematernal effectMedeaselfish genetic elementEcologyQH540-549.5ENEcology and Evolution, Vol 10, Iss 2, Pp 863-874 (2020)
institution DOAJ
collection DOAJ
language EN
topic gene drive
maternal effect
Medea
selfish genetic element
Ecology
QH540-549.5
spellingShingle gene drive
maternal effect
Medea
selfish genetic element
Ecology
QH540-549.5
Sarah A. Cash
Michael A. Robert
Marcé D. Lorenzen
Fred Gould
The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
description Abstract Selfish genetic elements have been found in the genomes of many species, yet our understanding of their evolutionary dynamics is only partially understood. A number of distinct selfish Medea elements are naturally present in many populations of the red flour beetle (Tribolium castaneum). Although these Medea elements are predicted by models to increase in frequency within populations because any offspring of a Medea‐bearing mother that do not inherit at least one Medea allele will die, experiments demonstrating an increase in a naturally occurring Medea element are lacking. Our survey of the specific Medea element, M1, in the United States showed that it had a patchy geographic distribution. From the survey, it could not be determined if this distribution was caused by a slow process of M1 colonization of discrete populations or if some populations lacked M1 because they had genetic factors conferring resistance to the Medea mechanism. We show that populations with naturally low to intermediate M1 frequencies likely represent transient states during the process of Medea spread. Furthermore, we find no evidence that genetic factors are excluding M1 from US populations where the element is not presently found. We also show how a known suppressor of Medea can impair the increase of M1 in populations and discuss the implications of our findings for pest‐management applications of Medea elements.
format article
author Sarah A. Cash
Michael A. Robert
Marcé D. Lorenzen
Fred Gould
author_facet Sarah A. Cash
Michael A. Robert
Marcé D. Lorenzen
Fred Gould
author_sort Sarah A. Cash
title The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
title_short The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
title_full The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
title_fullStr The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
title_full_unstemmed The impact of local population genetic background on the spread of the selfish element Medea‐1 in red flour beetles
title_sort impact of local population genetic background on the spread of the selfish element medea‐1 in red flour beetles
publisher Wiley
publishDate 2020
url https://doaj.org/article/4bba5c23d0a24a4f8cd64d5516a05843
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