Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication

Abstract Classical biological control is a pest control tool involving the release of imported natural enemies. The Sterile Insect Technique (SIT) comprises releasing sexually sterile insects of a pest into the wild population for suppression or eradication. Both these approaches are environmentally...

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Autores principales:	Kiran Jonathan Horrocks, Gonzalo Andres Avila, Gregory Ian Holwell, David Maxwell Suckling
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/08ed894fdf19419b8a39ea6b78dadd91
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spelling	oai:doaj.org-article:08ed894fdf19419b8a39ea6b78dadd912021-12-02T17:47:36ZIrradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication10.1038/s41598-021-91935-42045-2322https://doaj.org/article/08ed894fdf19419b8a39ea6b78dadd912021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91935-4https://doaj.org/toc/2045-2322Abstract Classical biological control is a pest control tool involving the release of imported natural enemies. The Sterile Insect Technique (SIT) comprises releasing sexually sterile insects of a pest into the wild population for suppression or eradication. Both these approaches are environmentally friendly and their combination can result in a synergistic impact on pest populations and improve eradication. However, stringent regulation surrounding the introduction of biological control agents limits their use in eradication owing to the perceived risk of effects on non-target organisms. We investigated the irradiation biology of the egg parasitoid Trissolcus basalis to ascertain whether sterile parasitoids could mitigate the risk of potential sustained non-target impacts. Mated female T. basalis were gamma-irradiated at doses between 120 and 150 Gy and exposed to egg masses of their host Nezara viridula throughout their lifespans. This resulted in host mortality, despite a substantial reduction in developing parasitoid offspring, which followed a negative dose–response. There was no emergence of parasitoid offspring at 140 Gy and above. Irradiation did not affect oviposition behaviour but caused an increase in longevity. Consequently, sterile parasitoids could possibly alleviate concerns regarding the irreversibility of biological control release, which promotes further investigation of their potential role in eradication.Kiran Jonathan HorrocksGonzalo Andres AvilaGregory Ian HolwellDavid Maxwell SucklingNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kiran Jonathan Horrocks Gonzalo Andres Avila Gregory Ian Holwell David Maxwell Suckling Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
description	Abstract Classical biological control is a pest control tool involving the release of imported natural enemies. The Sterile Insect Technique (SIT) comprises releasing sexually sterile insects of a pest into the wild population for suppression or eradication. Both these approaches are environmentally friendly and their combination can result in a synergistic impact on pest populations and improve eradication. However, stringent regulation surrounding the introduction of biological control agents limits their use in eradication owing to the perceived risk of effects on non-target organisms. We investigated the irradiation biology of the egg parasitoid Trissolcus basalis to ascertain whether sterile parasitoids could mitigate the risk of potential sustained non-target impacts. Mated female T. basalis were gamma-irradiated at doses between 120 and 150 Gy and exposed to egg masses of their host Nezara viridula throughout their lifespans. This resulted in host mortality, despite a substantial reduction in developing parasitoid offspring, which followed a negative dose–response. There was no emergence of parasitoid offspring at 140 Gy and above. Irradiation did not affect oviposition behaviour but caused an increase in longevity. Consequently, sterile parasitoids could possibly alleviate concerns regarding the irreversibility of biological control release, which promotes further investigation of their potential role in eradication.
format	article
author	Kiran Jonathan Horrocks Gonzalo Andres Avila Gregory Ian Holwell David Maxwell Suckling
author_facet	Kiran Jonathan Horrocks Gonzalo Andres Avila Gregory Ian Holwell David Maxwell Suckling
author_sort	Kiran Jonathan Horrocks
title	Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
title_short	Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
title_full	Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
title_fullStr	Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
title_full_unstemmed	Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
title_sort	irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/08ed894fdf19419b8a39ea6b78dadd91
work_keys_str_mv	AT kiranjonathanhorrocks irradiationinducedsterilityinaneggparasitoidandpossibleimplicationsfortheuseofbiologicalcontrolininsecteradication AT gonzaloandresavila irradiationinducedsterilityinaneggparasitoidandpossibleimplicationsfortheuseofbiologicalcontrolininsecteradication AT gregoryianholwell irradiationinducedsterilityinaneggparasitoidandpossibleimplicationsfortheuseofbiologicalcontrolininsecteradication AT davidmaxwellsuckling irradiationinducedsterilityinaneggparasitoidandpossibleimplicationsfortheuseofbiologicalcontrolininsecteradication
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Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication

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