The effects of relative humidity on Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) egg hatch, nymph survival, and adult reproduction

Authors

  • Arjun Khadka University of Florida, Department of Entomology and Nematology, P.O. Box 110620, Gainesville, Florida 32611-0620, USA
  • Amanda C Hodges University of Florida, Department of Entomology and Nematology, P.O. Box 110620, Gainesville, Florida 32611-0620, USA
  • Norman C Leppla University of Florida, Department of Entomology and Nematology, P.O. Box 110620, Gainesville, Florida 32611-0620, USA
  • Patricia Glynn Tillman USDA, Agriculture Research Service (ARS), Tifton, Georgia 31793, USA

Abstract

Eggs, nymphs, and adults of Halyomorpha halys were exposed to 15%, 35%, 55%, 75%, or 90% RH provided by glycerol-water solutions. Although egg hatch and nymphal survival occurred at all concentrations, they were highest at 55% to 90% RH. Nymphs exposed at the second instar reached the adult stage only at 55% to 90% RH. Females laid the greatest number of egg clutches at 55% RH. Therefore, we believe that H. halys could survive in Florida at 55% to 90% RH, but would be most prolific at 55%.

Key Words: insect rearing; relative humidity; brown marmorated stink bug; hatching

Sumario

Los huevos, las ninfas y los adultos de Halyomorpha halys fueron expuestos al 15%, 35%, 55%, 75% o 90% de HR proporcionado por las soluciones de agua y glicerol. Aunque la eclosión de huevos y la sobrevivencia de las ninfas se sucedieron en todas las concentraciones, ellas fueron más altas con una HR del 55% al 90%. Las ninfas expuestas en el segundo estadio alcanzaron el estadio adulto solo con 55% a 90% de HR. Las hembras pusieron el mayor número de grupos de huevos a 55% de HR. Por lo tanto, creemos que H. halys podría sobrevivir en Florida con 55% a 90% HR, pero sería más prolífico con 55%.

Palabras Clave: cría de insectos; humedad relativa; chinche marrón apestoso; eclosión

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Published

2020-04-15

Issue

Section

Scientific Notes