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Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)

SIMPLE SUMMARY: Overwintering populations of the crop pest Halyomorpha halys exhibit cannibalistic behaviour towards conspecifics. Depletion of metabolic reserves and desiccation occurring in winter can be overcome by intraspecific predation. This behaviour may be facilitated by the aggregation of i...

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Autores principales: Papa, Giulia, Negri, Ilaria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7563328/
https://www.ncbi.nlm.nih.gov/pubmed/32961659
http://dx.doi.org/10.3390/insects11090643
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author Papa, Giulia
Negri, Ilaria
author_facet Papa, Giulia
Negri, Ilaria
author_sort Papa, Giulia
collection PubMed
description SIMPLE SUMMARY: Overwintering populations of the crop pest Halyomorpha halys exhibit cannibalistic behaviour towards conspecifics. Depletion of metabolic reserves and desiccation occurring in winter can be overcome by intraspecific predation. This behaviour may be facilitated by the aggregation of individuals and the suppression of species-specific signals that prevent predation upon conspecifics. ABSTRACT: The phytophagous brown marmorated stink bug Halyomorpha halys (Stål) is known to exhibit cannibalistic behaviour towards eggs. Here, we provide evidence of cannibalism among overwintering H. halys adults. Since diapausing individuals have high physiological demands for surviving long periods under stressful conditions, including the risk of depletion of metabolic reserves and desiccation, we assumed that nutritional and water requirements can be met by intraspecific predation. The role of aggregative behaviour in promoting cannibalism is also discussed. Given its evolutionary advantage, this trait should be maintained over generations and may be more widespread than previously considered in species that display aggregative behaviour during adverse seasons.
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spelling pubmed-75633282020-10-27 Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål) Papa, Giulia Negri, Ilaria Insects Brief Report SIMPLE SUMMARY: Overwintering populations of the crop pest Halyomorpha halys exhibit cannibalistic behaviour towards conspecifics. Depletion of metabolic reserves and desiccation occurring in winter can be overcome by intraspecific predation. This behaviour may be facilitated by the aggregation of individuals and the suppression of species-specific signals that prevent predation upon conspecifics. ABSTRACT: The phytophagous brown marmorated stink bug Halyomorpha halys (Stål) is known to exhibit cannibalistic behaviour towards eggs. Here, we provide evidence of cannibalism among overwintering H. halys adults. Since diapausing individuals have high physiological demands for surviving long periods under stressful conditions, including the risk of depletion of metabolic reserves and desiccation, we assumed that nutritional and water requirements can be met by intraspecific predation. The role of aggregative behaviour in promoting cannibalism is also discussed. Given its evolutionary advantage, this trait should be maintained over generations and may be more widespread than previously considered in species that display aggregative behaviour during adverse seasons. MDPI 2020-09-19 /pmc/articles/PMC7563328/ /pubmed/32961659 http://dx.doi.org/10.3390/insects11090643 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 Brief Report
Papa, Giulia
Negri, Ilaria
Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title_full Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title_fullStr Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title_full_unstemmed Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title_short Cannibalism in the Brown Marmorated Stink Bug Halyomorpha halys (Stål)
title_sort cannibalism in the brown marmorated stink bug halyomorpha halys (stål)
topic Brief Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7563328/
https://www.ncbi.nlm.nih.gov/pubmed/32961659
http://dx.doi.org/10.3390/insects11090643
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