Natural enemies partially compensate for warming induced excess herbivory in an organic growth system

Abstract Predators can limit prey abundance and/or levels of activity. The magnitudes of these effects are contingent on predator and prey traits that may change with environmental conditions. Aberrant thermal regimes could disrupt pest suppression through asymmetric effects, e.g. heat-sensitive pre...

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Autores principales:	Orsolya Beleznai, Jamin Dreyer, Zoltán Tóth, Ferenc Samu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7efb4f70b18a41ddba408c9aaa004347
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spelling	oai:doaj.org-article:7efb4f70b18a41ddba408c9aaa0043472021-12-02T16:06:17ZNatural enemies partially compensate for warming induced excess herbivory in an organic growth system10.1038/s41598-017-07509-w2045-2322https://doaj.org/article/7efb4f70b18a41ddba408c9aaa0043472017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07509-whttps://doaj.org/toc/2045-2322Abstract Predators can limit prey abundance and/or levels of activity. The magnitudes of these effects are contingent on predator and prey traits that may change with environmental conditions. Aberrant thermal regimes could disrupt pest suppression through asymmetric effects, e.g. heat-sensitive predator vs. heat-tolerant prey. To explore potential effects of warming on suppressing pests and controlling herbivory in a vegetable crop, we performed laboratory experiments exposing an important pest species to two spider predator species at different temperatures. Heat tolerance was characterised by the critical thermal maxima parameter (CTM50) of the cucumber beetle (Diabrotica undecimpunctata), wolf spider (Tigrosa helluo), and nursery web spider (Pisaurina mira). Cucumber beetles and wolf spiders were equally heat tolerant (CTM50 > 40 °C), but nursery web spiders had limited heat tolerance (CTM50 = 34 °C). Inside mesocosms, beetle feeding increased with temperature, wolf spiders were always effective predators, nursery web spiders were less lethal at high temperature (38 °C). Neither spider species reduced herbivory at ambient temperature (22 °C), however, at warm temperature both species reduced herbivory with evidence of a dominant non-consumptive effect. Our experiments highlight the contingent nature of predator-prey interactions and suggest that non-consumptive effects should not be ignored when assessing the impact of temperature change.Orsolya BeleznaiJamin DreyerZoltán TóthFerenc SamuNature 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 Orsolya Beleznai Jamin Dreyer Zoltán Tóth Ferenc Samu Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
description	Abstract Predators can limit prey abundance and/or levels of activity. The magnitudes of these effects are contingent on predator and prey traits that may change with environmental conditions. Aberrant thermal regimes could disrupt pest suppression through asymmetric effects, e.g. heat-sensitive predator vs. heat-tolerant prey. To explore potential effects of warming on suppressing pests and controlling herbivory in a vegetable crop, we performed laboratory experiments exposing an important pest species to two spider predator species at different temperatures. Heat tolerance was characterised by the critical thermal maxima parameter (CTM50) of the cucumber beetle (Diabrotica undecimpunctata), wolf spider (Tigrosa helluo), and nursery web spider (Pisaurina mira). Cucumber beetles and wolf spiders were equally heat tolerant (CTM50 > 40 °C), but nursery web spiders had limited heat tolerance (CTM50 = 34 °C). Inside mesocosms, beetle feeding increased with temperature, wolf spiders were always effective predators, nursery web spiders were less lethal at high temperature (38 °C). Neither spider species reduced herbivory at ambient temperature (22 °C), however, at warm temperature both species reduced herbivory with evidence of a dominant non-consumptive effect. Our experiments highlight the contingent nature of predator-prey interactions and suggest that non-consumptive effects should not be ignored when assessing the impact of temperature change.
format	article
author	Orsolya Beleznai Jamin Dreyer Zoltán Tóth Ferenc Samu
author_facet	Orsolya Beleznai Jamin Dreyer Zoltán Tóth Ferenc Samu
author_sort	Orsolya Beleznai
title	Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
title_short	Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
title_full	Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
title_fullStr	Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
title_full_unstemmed	Natural enemies partially compensate for warming induced excess herbivory in an organic growth system
title_sort	natural enemies partially compensate for warming induced excess herbivory in an organic growth system
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7efb4f70b18a41ddba408c9aaa004347
work_keys_str_mv	AT orsolyabeleznai naturalenemiespartiallycompensateforwarminginducedexcessherbivoryinanorganicgrowthsystem AT jamindreyer naturalenemiespartiallycompensateforwarminginducedexcessherbivoryinanorganicgrowthsystem AT zoltantoth naturalenemiespartiallycompensateforwarminginducedexcessherbivoryinanorganicgrowthsystem AT ferencsamu naturalenemiespartiallycompensateforwarminginducedexcessherbivoryinanorganicgrowthsystem
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Natural enemies partially compensate for warming induced excess herbivory in an organic growth system

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