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Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants

Western, northern, Mexican, and southern corn rootworms (WCR, NCR, MCR, and SCR) are serious corn pests. We evaluated host search behavior of these pests on six plant species using a video tracking system. After a 5-min exposure to plant roots, behavioral parameters were automatically recorded and u...

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Autores principales: Huynh, Man P., Geisert, Ryan W., Ludwick, Dalton C., Pekarcik, Adrian J., Hibbard, Bruce E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10579251/
https://www.ncbi.nlm.nih.gov/pubmed/37845376
http://dx.doi.org/10.1038/s41598-023-44760-w
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author Huynh, Man P.
Geisert, Ryan W.
Ludwick, Dalton C.
Pekarcik, Adrian J.
Hibbard, Bruce E.
author_facet Huynh, Man P.
Geisert, Ryan W.
Ludwick, Dalton C.
Pekarcik, Adrian J.
Hibbard, Bruce E.
author_sort Huynh, Man P.
collection PubMed
description Western, northern, Mexican, and southern corn rootworms (WCR, NCR, MCR, and SCR) are serious corn pests. We evaluated host search behavior of these pests on six plant species using a video tracking system. After a 5-min exposure to plant roots, behavioral parameters were automatically recorded and used to quantify the search behavior. The search behavior was not observed for sorghum since no neonates survived after contacting sorghum roots. After exposures to corn roots, all neonates exhibited the localized search behaviors (i.e., shortening total distance traveled, lowering movement speed, increasing turn angle, moving farther from origin) which are used to stay in and search within root systems. When larvae contacted roots of wheat, barley, oats, soybean, or controls, they expanded the search area by extending the travel path, increasing velocity, and reducing turn angles and total distance moved. The intensity of the search expansion is highly associated with the host preferences known for the four rootworm species and subspecies. Neonates of each corn rootworm exhibited distinct search behaviors. In fact, NCR larvae had the highest speed, the greatest travel path, and the lowest turn angle, whereas MCR larvae had the highest turn angle and moved faster than WCR and SCR larvae.
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spelling pubmed-105792512023-10-18 Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants Huynh, Man P. Geisert, Ryan W. Ludwick, Dalton C. Pekarcik, Adrian J. Hibbard, Bruce E. Sci Rep Article Western, northern, Mexican, and southern corn rootworms (WCR, NCR, MCR, and SCR) are serious corn pests. We evaluated host search behavior of these pests on six plant species using a video tracking system. After a 5-min exposure to plant roots, behavioral parameters were automatically recorded and used to quantify the search behavior. The search behavior was not observed for sorghum since no neonates survived after contacting sorghum roots. After exposures to corn roots, all neonates exhibited the localized search behaviors (i.e., shortening total distance traveled, lowering movement speed, increasing turn angle, moving farther from origin) which are used to stay in and search within root systems. When larvae contacted roots of wheat, barley, oats, soybean, or controls, they expanded the search area by extending the travel path, increasing velocity, and reducing turn angles and total distance moved. The intensity of the search expansion is highly associated with the host preferences known for the four rootworm species and subspecies. Neonates of each corn rootworm exhibited distinct search behaviors. In fact, NCR larvae had the highest speed, the greatest travel path, and the lowest turn angle, whereas MCR larvae had the highest turn angle and moved faster than WCR and SCR larvae. Nature Publishing Group UK 2023-10-16 /pmc/articles/PMC10579251/ /pubmed/37845376 http://dx.doi.org/10.1038/s41598-023-44760-w Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Huynh, Man P.
Geisert, Ryan W.
Ludwick, Dalton C.
Pekarcik, Adrian J.
Hibbard, Bruce E.
Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title_full Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title_fullStr Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title_full_unstemmed Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title_short Host search behaviors of specialist and generalist root feeding herbivores (Diabrotica spp.) on host and non-host plants
title_sort host search behaviors of specialist and generalist root feeding herbivores (diabrotica spp.) on host and non-host plants
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10579251/
https://www.ncbi.nlm.nih.gov/pubmed/37845376
http://dx.doi.org/10.1038/s41598-023-44760-w
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