Refuges and host shift pathways of host-specialized aphids Aphis gossypii

Abstract Polyphagous cotton-melon aphid populations usually comprise cotton- and cucurbit-specialized biotypes. Host-specialized aphids are prone to food shortages. Cucumber, the favourite food of cucurbit-specialized aphids, is usually absent during autumn and winter in Nanjing, China. Therefore, s...

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Autores principales:	Xiang-Dong Liu, Ting-Ting Xu, Hai-Xia Lei
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/76db2c3babf5422d88cad7e80107956b
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spelling	oai:doaj.org-article:76db2c3babf5422d88cad7e80107956b2021-12-02T11:40:41ZRefuges and host shift pathways of host-specialized aphids Aphis gossypii10.1038/s41598-017-02248-42045-2322https://doaj.org/article/76db2c3babf5422d88cad7e80107956b2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02248-4https://doaj.org/toc/2045-2322Abstract Polyphagous cotton-melon aphid populations usually comprise cotton- and cucurbit-specialized biotypes. Host-specialized aphids are prone to food shortages. Cucumber, the favourite food of cucurbit-specialized aphids, is usually absent during autumn and winter in Nanjing, China. Therefore, suboptimal host plants act as refuges and govern the population dynamics of this aphid. The species, growth stages and leaf ages of host plants that cotton- and cucurbit-specialized aphids potentially could use were explored in this study. Cotton-specialized aphids were found to use wild chrysanthemum, potato, zucchini, pumpkin and flowering cucumber besides cotton, whilst cucurbit-specialized aphids were able to utilize potato, zucchini, pumpkin and mature cotton besides cucumber. The population dynamics and genotype frequencies of aphids on hibiscus, cotton, zucchini, cucumber and pumpkin showed that cotton-melon aphids on cucumber could transfer onto mature cotton. Aphids on zucchini shared microsatellite genotypes with aphids on cotton and cucumber. The predominant genotype of aphids on cotton was found on hibiscus, but the predominant genotype on cucumber was not found on hibiscus. Host-specialized aphids clearly have refuges during food shortages. Hibiscus is an overwintering host for cotton-specialized aphids but not for cucurbit-aphids. Removing refuges or managing aphids on refuges could potentially be an effective method to control cotton-melon aphids.Xiang-Dong LiuTing-Ting XuHai-Xia LeiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiang-Dong Liu Ting-Ting Xu Hai-Xia Lei Refuges and host shift pathways of host-specialized aphids Aphis gossypii
description	Abstract Polyphagous cotton-melon aphid populations usually comprise cotton- and cucurbit-specialized biotypes. Host-specialized aphids are prone to food shortages. Cucumber, the favourite food of cucurbit-specialized aphids, is usually absent during autumn and winter in Nanjing, China. Therefore, suboptimal host plants act as refuges and govern the population dynamics of this aphid. The species, growth stages and leaf ages of host plants that cotton- and cucurbit-specialized aphids potentially could use were explored in this study. Cotton-specialized aphids were found to use wild chrysanthemum, potato, zucchini, pumpkin and flowering cucumber besides cotton, whilst cucurbit-specialized aphids were able to utilize potato, zucchini, pumpkin and mature cotton besides cucumber. The population dynamics and genotype frequencies of aphids on hibiscus, cotton, zucchini, cucumber and pumpkin showed that cotton-melon aphids on cucumber could transfer onto mature cotton. Aphids on zucchini shared microsatellite genotypes with aphids on cotton and cucumber. The predominant genotype of aphids on cotton was found on hibiscus, but the predominant genotype on cucumber was not found on hibiscus. Host-specialized aphids clearly have refuges during food shortages. Hibiscus is an overwintering host for cotton-specialized aphids but not for cucurbit-aphids. Removing refuges or managing aphids on refuges could potentially be an effective method to control cotton-melon aphids.
format	article
author	Xiang-Dong Liu Ting-Ting Xu Hai-Xia Lei
author_facet	Xiang-Dong Liu Ting-Ting Xu Hai-Xia Lei
author_sort	Xiang-Dong Liu
title	Refuges and host shift pathways of host-specialized aphids Aphis gossypii
title_short	Refuges and host shift pathways of host-specialized aphids Aphis gossypii
title_full	Refuges and host shift pathways of host-specialized aphids Aphis gossypii
title_fullStr	Refuges and host shift pathways of host-specialized aphids Aphis gossypii
title_full_unstemmed	Refuges and host shift pathways of host-specialized aphids Aphis gossypii
title_sort	refuges and host shift pathways of host-specialized aphids aphis gossypii
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/76db2c3babf5422d88cad7e80107956b
work_keys_str_mv	AT xiangdongliu refugesandhostshiftpathwaysofhostspecializedaphidsaphisgossypii AT tingtingxu refugesandhostshiftpathwaysofhostspecializedaphidsaphisgossypii AT haixialei refugesandhostshiftpathwaysofhostspecializedaphidsaphisgossypii
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Refuges and host shift pathways of host-specialized aphids Aphis gossypii

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