Cold Tolerance of Pityophthorus juglandis (Coleoptera: Scolytidae) From Northern California

Environmental Entomology
Andrea R HeftyRobert C Venette

Abstract

Winter survivorship of insects is determined by a combination of physiological, behavioral, and microhabitat characteristics. We characterized the cold tolerance of the walnut twig beetle, Pityophthorus juglandis Blackman, a domestic alien invasive bark beetle that vectors a phytopathogenic fungus. The beetle and fungus cause thousand cankers disease in species of Juglans and Pterocarya. The disease is spreading in the United States of America (USA) and Italy. Contact thermocouple thermometry was used to measure the supercooling points of adults and larvae and lower lethal temperatures of adults from a population from northern California. Supercooling points ranged from -12.2 °C to - 25.0 °C for adults and -13.6 °C to - 23.5 °C for larvae; lower lethal temperatures of adults ranged from -14 °C to - 23 °C. We found seasonal changes in adult supercooling points in fall, winter, and spring. The supercooling point for males was 0.5 °C colder than for females over all months and 1 °C colder in the winter than in other seasons. The cold-tolerance strategy shifted in P. juglandis adults from freeze intolerance (December 2013 and January 2014) to partial freeze tolerance (February 2014). An intermediate level of cold tolerance with a p...Continue Reading

References

Aug 13, 2004·Proceedings. Biological Sciences·C L BrownK F A Walters
Feb 6, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·V KostálJ Bastl
May 15, 2007·Ecological Applications : a Publication of the Ecological Society of America·J Khai TranMatthew P Ayres
Sep 8, 2009·Risk Analysis : an Official Publication of the Society for Risk Analysis·Denys YemshanovWilliam D Smith
Dec 3, 2009·Journal of Insect Physiology·Nick BerkvensPatrick De Clercq
Feb 15, 2012·Proceedings of the National Academy of Sciences of the United States of America·Vladimír KoštálTomáš Štětina
Apr 25, 2012·Environmental Entomology·A C MoreyE C Burkness
Sep 1, 2015·Environmental Entomology·A R StephensR C Venette

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