Choose your meals carefully if you need to coexist with a toxic invader

Abstract Vulnerable native species may survive the impact of a lethally toxic invader by changes in behaviour, physiology and/or morphology. The roles of such mechanisms can be clarified by standardised testing. We recorded behavioural responses of monitor lizards (Varanus panoptes and V. varius) to...

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Autores principales:	Lachlan Pettit, Georgia Ward-Fear, Richard Shine
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b828e94067a493c846aa98bcc6eb058
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spelling	oai:doaj.org-article:5b828e94067a493c846aa98bcc6eb0582021-12-02T13:34:00ZChoose your meals carefully if you need to coexist with a toxic invader10.1038/s41598-020-78979-82045-2322https://doaj.org/article/5b828e94067a493c846aa98bcc6eb0582020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78979-8https://doaj.org/toc/2045-2322Abstract Vulnerable native species may survive the impact of a lethally toxic invader by changes in behaviour, physiology and/or morphology. The roles of such mechanisms can be clarified by standardised testing. We recorded behavioural responses of monitor lizards (Varanus panoptes and V. varius) to legs of poisonous cane toads (Rhinella marina) and non-toxic control meals (chicken necks or chicken eggs and sardines) along 1300 and 2500 km transects, encompassing the toad’s 85-year invasion trajectory across Australia as well as yet-to-be-invaded sites to the west and south of the currently colonised area. Patterns were identical in the two varanid species. Of monitors that consumed at least one prey type, 96% took control baits whereas toad legs were eaten by 60% of lizards in toad-free sites but 0% from toad-invaded sites. Our survey confirms that the ability to recognise and reject toads as prey enables monitor lizards to coexist with cane toads. As toxic invaders continue to impact ecosystems globally, it is vital to understand the mechanisms that allow some taxa to persist over long time-scales.Lachlan PettitGeorgia Ward-FearRichard ShineNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lachlan Pettit Georgia Ward-Fear Richard Shine Choose your meals carefully if you need to coexist with a toxic invader
description	Abstract Vulnerable native species may survive the impact of a lethally toxic invader by changes in behaviour, physiology and/or morphology. The roles of such mechanisms can be clarified by standardised testing. We recorded behavioural responses of monitor lizards (Varanus panoptes and V. varius) to legs of poisonous cane toads (Rhinella marina) and non-toxic control meals (chicken necks or chicken eggs and sardines) along 1300 and 2500 km transects, encompassing the toad’s 85-year invasion trajectory across Australia as well as yet-to-be-invaded sites to the west and south of the currently colonised area. Patterns were identical in the two varanid species. Of monitors that consumed at least one prey type, 96% took control baits whereas toad legs were eaten by 60% of lizards in toad-free sites but 0% from toad-invaded sites. Our survey confirms that the ability to recognise and reject toads as prey enables monitor lizards to coexist with cane toads. As toxic invaders continue to impact ecosystems globally, it is vital to understand the mechanisms that allow some taxa to persist over long time-scales.
format	article
author	Lachlan Pettit Georgia Ward-Fear Richard Shine
author_facet	Lachlan Pettit Georgia Ward-Fear Richard Shine
author_sort	Lachlan Pettit
title	Choose your meals carefully if you need to coexist with a toxic invader
title_short	Choose your meals carefully if you need to coexist with a toxic invader
title_full	Choose your meals carefully if you need to coexist with a toxic invader
title_fullStr	Choose your meals carefully if you need to coexist with a toxic invader
title_full_unstemmed	Choose your meals carefully if you need to coexist with a toxic invader
title_sort	choose your meals carefully if you need to coexist with a toxic invader
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/5b828e94067a493c846aa98bcc6eb058
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Choose your meals carefully if you need to coexist with a toxic invader

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