Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults

Colorado potato beetle <i>Leptinotarsa decemlineata</i> is among the most destructive pests of potatoes quickly developing resistance to traditional insecticides. In the present study, we tested the effect of various species and strains of entomopathogenic nematodes on CPB adults, and su...

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Autores principales:	Vladimír Půža, Jiří Nermuť, Jana Konopická, Oxana Skoková Habuštová
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Colorado potato beetle entomopathogenic nematodes entomopathogenic fungi <i>Steinernema</i> <i>Beauveria</i> field application Science Q
Acceso en línea:	https://doaj.org/article/218fa93f55f94f14828bd7011efa94f4
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spelling	oai:doaj.org-article:218fa93f55f94f14828bd7011efa94f42021-11-25T17:59:56ZEfficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults10.3390/insects121110302075-4450https://doaj.org/article/218fa93f55f94f14828bd7011efa94f42021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4450/12/11/1030https://doaj.org/toc/2075-4450Colorado potato beetle <i>Leptinotarsa decemlineata</i> is among the most destructive pests of potatoes quickly developing resistance to traditional insecticides. In the present study, we tested the effect of various species and strains of entomopathogenic nematodes on CPB adults, and subsequently, the most effective nematodes were applied alone and in combination with entomopathogenic fungus <i>B. bassiana</i> in pots with potato plants and in the field and their effect on the number of emerging adults was evaluated. In the experimental infections, both the nematode invasion and pathogenicity were variable, and, in several strains, the mortality reached 100%. In pot experiments, soil application of nematodes <i>S. carpocapsae</i> 1343 and <i>S. feltiae</i> Jakub and fungus significantly decreased numbers of emerging CPB adults, while, after the application on leaves, only fungal treatment was effective. The field application of fungus <i>B. bassiana</i> significantly decreased the number of emerging CPB adults in comparison to control sites by ca. 30% while the effect of nematodes and the nematodes–fungus combination was not significant. In conclusion, we demonstrate the necessity of thorough bioassays to select the most effective nematode strains. Entomopathogenic nematodes have the potential to effectively decrease the emergence of CPB adults, but further research is needed to improve the effectiveness in the field.Vladimír PůžaJiří NermuťJana KonopickáOxana Skoková HabuštováMDPI AGarticleColorado potato beetleentomopathogenic nematodesentomopathogenic fungi<i>Steinernema</i><i>Beauveria</i>field applicationScienceQENInsects, Vol 12, Iss 1030, p 1030 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Colorado potato beetle entomopathogenic nematodes entomopathogenic fungi <i>Steinernema</i> <i>Beauveria</i> field application Science Q
spellingShingle	Colorado potato beetle entomopathogenic nematodes entomopathogenic fungi <i>Steinernema</i> <i>Beauveria</i> field application Science Q Vladimír Půža Jiří Nermuť Jana Konopická Oxana Skoková Habuštová Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
description	Colorado potato beetle <i>Leptinotarsa decemlineata</i> is among the most destructive pests of potatoes quickly developing resistance to traditional insecticides. In the present study, we tested the effect of various species and strains of entomopathogenic nematodes on CPB adults, and subsequently, the most effective nematodes were applied alone and in combination with entomopathogenic fungus <i>B. bassiana</i> in pots with potato plants and in the field and their effect on the number of emerging adults was evaluated. In the experimental infections, both the nematode invasion and pathogenicity were variable, and, in several strains, the mortality reached 100%. In pot experiments, soil application of nematodes <i>S. carpocapsae</i> 1343 and <i>S. feltiae</i> Jakub and fungus significantly decreased numbers of emerging CPB adults, while, after the application on leaves, only fungal treatment was effective. The field application of fungus <i>B. bassiana</i> significantly decreased the number of emerging CPB adults in comparison to control sites by ca. 30% while the effect of nematodes and the nematodes–fungus combination was not significant. In conclusion, we demonstrate the necessity of thorough bioassays to select the most effective nematode strains. Entomopathogenic nematodes have the potential to effectively decrease the emergence of CPB adults, but further research is needed to improve the effectiveness in the field.
format	article
author	Vladimír Půža Jiří Nermuť Jana Konopická Oxana Skoková Habuštová
author_facet	Vladimír Půža Jiří Nermuť Jana Konopická Oxana Skoková Habuštová
author_sort	Vladimír Půža
title	Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
title_short	Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
title_full	Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
title_fullStr	Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
title_full_unstemmed	Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults
title_sort	efficacy of the applied natural enemies on the survival of colorado potato beetle adults
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/218fa93f55f94f14828bd7011efa94f4
work_keys_str_mv	AT vladimirpuza efficacyoftheappliednaturalenemiesonthesurvivalofcoloradopotatobeetleadults AT jirinermut efficacyoftheappliednaturalenemiesonthesurvivalofcoloradopotatobeetleadults AT janakonopicka efficacyoftheappliednaturalenemiesonthesurvivalofcoloradopotatobeetleadults AT oxanaskokovahabustova efficacyoftheappliednaturalenemiesonthesurvivalofcoloradopotatobeetleadults
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Efficacy of the Applied Natural Enemies on the Survival of Colorado Potato Beetle Adults

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