Aquatic plant extracts and coverage mediate larval mosquito survivorship and development

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dc.contributor.authorCuthbert, Ross N.
dc.contributor.authorVong, Gina Y. W.
dc.contributor.authorPaolacci, Simona
dc.contributor.authorDick, Jaimie T. A.
dc.contributor.authorCallaghan, Amanda
dc.contributor.authorCoughlan, Neil E.
dc.contributor.funderAlexander von Humboldt-Stiftungen
dc.contributor.funderG. & M. Williams Research Funden
dc.contributor.funderEnvironmental Protection Agencyen
dc.date.accessioned2022-07-27T14:12:03Z
dc.date.available2022-07-27T14:12:03Z
dc.date.issued2020-03-29
dc.date.updated2022-07-14T14:51:30Z
dc.description.abstractEnvironmental concerns and insecticide resistance threaten the sustained efficacy of mosquito control approaches which remain reliant on synthetic chemicals. Plant-based extracts may be an environmentally sustainable and effective alternative to contemporary mosquito control approaches; however, the efficacies of many possible plant-based extracts remain untested. The present study examines the effects of extracts from three floating and three submerged aquatic plants on larval mosquito Culex pipiens mortality, and development to pupal and adult stages. Physical impacts of floating plant species on mosquito mortality and development are also examined. Extracts of Lagarosiphon major and Lemna minuta were toxic, causing significantly increased mosquito mortality compared to plant-free controls. Effects of Azolla filiculoides, Crassula helmsii, Elodea canadensis and Lemna minor were statistically unclear, yet in some cases tended to increase pupal and larval numbers at high extract concentrations. Surface coverage of all floating Lemna species drove significant mosquito mortality through mechanical processes which likely impeded surface respiration by larval mosquitoes. In particular, high-density mats of L. minuta consistently caused total larval mortality. The present study thus suggests that targeted use of specific aquatic plants could assist in mosquito control protocols. However, as the chemical composition of botanic material will differ across spatial and temporal gradients, even for a singular species, localised assessment of the efficacy of plant-based extracts from within areas experiencing problematic mosquito control is required. The application of aquatic plants that are both toxic to larvae and are effective physical control agents presents an economic and effective method of mosquito control.en
dc.description.sponsorshipAlexander von Humboldt-Stiftung (Humboldt Research Fellowship); Environmental Protection Agency (research grant 2015-NC-MS-4)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid104263en
dc.identifier.citationCuthbert, R. N., Vong, G. Y. W., Paolacci, S., Dick, J. T. A., Callaghan, A. and Coughlan, N. E. (2020) 'Aquatic plant extracts and coverage mediate larval mosquito survivorship and development', Biological Control, 145, 104263 (7pp). doi: 10.1016/j.biocontrol.2020.104263en
dc.identifier.doi10.1016/j.biocontrol.2020.104263en
dc.identifier.endpage7en
dc.identifier.issn1049-9644
dc.identifier.journaltitleBiological Controlen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/13412
dc.identifier.volume145en
dc.language.isoenen
dc.publisherElsevier Inc.en
dc.rights© 2020, Elsevier Inc. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectBiological controlen
dc.subjectCulex pipiensen
dc.subjectDisease vector ecologyen
dc.subjectInvasive alien speciesen
dc.subjectLethal effectsen
dc.titleAquatic plant extracts and coverage mediate larval mosquito survivorship and developmenten
dc.typeArticle (peer-reviewed)en
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