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Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys

The egg parasitoid Trissolcus japonicus is the main candidate for classical biocontrol of the invasive agricultural pest Halyomorpha halys. The efficacy of classical biocontrol depends on the parasitoid’s survival and conservation in the agroecosystem. Most parasitoid species rely on floral nectar a...

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Autores principales: McIntosh, Hanna R., Skillman, Victoria P., Galindo, Gracie, Lee, Jana C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411695/
https://www.ncbi.nlm.nih.gov/pubmed/32635248
http://dx.doi.org/10.3390/insects11070413
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author McIntosh, Hanna R.
Skillman, Victoria P.
Galindo, Gracie
Lee, Jana C.
author_facet McIntosh, Hanna R.
Skillman, Victoria P.
Galindo, Gracie
Lee, Jana C.
author_sort McIntosh, Hanna R.
collection PubMed
description The egg parasitoid Trissolcus japonicus is the main candidate for classical biocontrol of the invasive agricultural pest Halyomorpha halys. The efficacy of classical biocontrol depends on the parasitoid’s survival and conservation in the agroecosystem. Most parasitoid species rely on floral nectar as a food source, thus identifying nectar sources for T. japonicus is critical. We evaluated the impact of eight flowering plant species on T. japonicus survival in the lab by exposing unfed wasps to flowers inside vials. We also measured the wasps’ nutrient levels to confirm feeding and energy storage using anthrone and vanillin assays adapted for T. japonicus. Buckwheat, cilantro, and dill provided the best nectar sources for T. japonicus by improving median survival by 15, 3.5, and 17.5 days compared to water. These three nectar sources increased wasps’ sugar levels, and cilantro and dill also increased glycogen levels. Sweet alyssum, marigold, crimson clover, yellow mustard, and phacelia did not improve wasp survival or nutrient reserves. Further research is needed to determine if these flowers maintain their benefits in the field and whether they will increase the parasitism rate of H. halys.
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spelling pubmed-74116952020-08-25 Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys McIntosh, Hanna R. Skillman, Victoria P. Galindo, Gracie Lee, Jana C. Insects Article The egg parasitoid Trissolcus japonicus is the main candidate for classical biocontrol of the invasive agricultural pest Halyomorpha halys. The efficacy of classical biocontrol depends on the parasitoid’s survival and conservation in the agroecosystem. Most parasitoid species rely on floral nectar as a food source, thus identifying nectar sources for T. japonicus is critical. We evaluated the impact of eight flowering plant species on T. japonicus survival in the lab by exposing unfed wasps to flowers inside vials. We also measured the wasps’ nutrient levels to confirm feeding and energy storage using anthrone and vanillin assays adapted for T. japonicus. Buckwheat, cilantro, and dill provided the best nectar sources for T. japonicus by improving median survival by 15, 3.5, and 17.5 days compared to water. These three nectar sources increased wasps’ sugar levels, and cilantro and dill also increased glycogen levels. Sweet alyssum, marigold, crimson clover, yellow mustard, and phacelia did not improve wasp survival or nutrient reserves. Further research is needed to determine if these flowers maintain their benefits in the field and whether they will increase the parasitism rate of H. halys. MDPI 2020-07-03 /pmc/articles/PMC7411695/ /pubmed/32635248 http://dx.doi.org/10.3390/insects11070413 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
McIntosh, Hanna R.
Skillman, Victoria P.
Galindo, Gracie
Lee, Jana C.
Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title_full Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title_fullStr Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title_full_unstemmed Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title_short Floral Resources for Trissolcus japonicus, a Parasitoid of Halyomorpha halys
title_sort floral resources for trissolcus japonicus, a parasitoid of halyomorpha halys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411695/
https://www.ncbi.nlm.nih.gov/pubmed/32635248
http://dx.doi.org/10.3390/insects11070413
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