Lethal and sub-lethal effects of low-temperature exposures on Halyomorpha halys (Hemiptera: Pentatomidae) adults before and after overwintering.
- Resource Type
- Academic Journal
- Authors
- Scaccini D; Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020, Legnaro, Padua, Italy. davide.scaccini@phd.unipd.it.; Vanishvili L; Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020, Legnaro, Padua, Italy.; Tirello P; Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020, Legnaro, Padua, Italy.; Walton VM; Department of Horticulture, Oregon State University, Corvallis, OR, USA.; Duso C; Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020, Legnaro, Padua, Italy.; Pozzebon A; Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020, Legnaro, Padua, Italy. alberto.pozzebon@unipd.it.
- Source
- Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE
- Subject
- Language
- English
Cold winter temperatures can influence insects' survival in temperate zones. Brown marmorated stink bug, Halyomorpha halys (Stål) overwinters as adults in natural and human-made structures. In this study, we characterized low temperature mortality rates of H. halys adults that were either entering (ENA) or exiting (EXA) overwintering microhabitats. We considered the effect of different duration of cold exposure on mortality. We determined the impact of insect nutritional status and weight on cold tolerance. We additionally evaluated the effects of cold exposure on H. halys adult longevity and fecundity. Mortality of ENA and EXA adults was determined for 6 h and 2 h periods at - 2.5 °C and 2.5 °C respectively. EXA adults displayed higher mortality rates compared to ENA individuals at the low-temperature regimes. Halyomorpha halys adult survival rate was higher when their nutrient index (EXA individuals only) and weight were high. Low-temperature exposure increased longevity, but reduced fecundity of ENA females. The data further highlight how extreme spring frost events can result in significantly increased mortality levels of H. halys adults.