Effects of Temperature on Development and Voltinism of Chaetodactylus krombeini (Acari: Chaetodactylidae): Implications for Climate Change Impacts

• Published in: PloS one 2016-08, Vol.11 (8), p.e0161319-e0161319
• Main Authors: Ahn, Jeong Joon, Son, Youngsoo, He, Yaqian, Lee, Eungul, Park, Yong-Lak
• Format: Article
• Language: English
• Subjects: 21st century; Acari; Acari - embryology; Acari - growth & development; Acarina; Adults; Agricultural management; Animals; Apis mellifera; Arthropoda; Arthropods; BASIC BIOLOGICAL SCIENCES; Bees; Behavior; Biology and Life Sciences; Chaetodactylus krombeini; Climate Change; Cold storage; Computer simulation; Developmental stages; Diseases and pests; Earth Sciences; Eggs; Empirical models; Environment; Environmental aspects; Environmental impact; ENVIRONMENTAL SCIENCES; Forestry; Future climates; Geography; Global warming; Hot Temperature - adverse effects; Hymenoptera; Influence; Larva - growth & development; Larvae; Megachilidae; Mites; Models, Animal; Neoseiulus californicus; Nymph - growth & development; Nymphs; Osmia; Osmia cornifrons; People and places; Phenology; Physical Sciences; Phytoseiidae; Plant reproduction; Soil sciences; Surface temperature; Temperature; Temperature effects; United States; Voltinism; West Virginia
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0161319

Temperature plays an important role in the growth and development of arthropods, and thus the current trend of climate change will alter their biology and species distribution. We used Chaetodactylus krombeini (Acari: Chaetodactylidae), a cleptoparasitic mite associated with Osmia bees (Hymenoptera: Megachilidae), as a model organism to investigate how temperature affects the development and voltinism of C. krombeini in the eastern United States. The effects of temperature on the stage-specific development of C. krombeini were determined at seven constant temperatures (16.1, 20.2, 24.1, 27.5, 30.0, 32.4 and 37.8°C). Parameters for stage-specific development, such as threshold temperatures and thermal constant, were determined by using empirical models. Results of this study showed that C. krombeini eggs developed successfully to adult at all temperatures tested except 37.8°C. The nonlinear and linear empirical models were applied to describe quantitatively the relationship between temperature and development of each C. krombeini stage. The nonlinear Lactin model estimated optimal temperatures as 31.4, 32.9, 32.6 and 32.5°C for egg, larva, nymph, and egg to adult, respectively. In the linear model, the lower threshold temperatures were estimated to be 9.9, 14.7, 13.0 and 12.4°C for egg, larva, nymph, and egg to adult, respectively. The thermal constant for each stage completion were 61.5, 28.1, 64.8 and 171.1 degree days for egg, larva, nymph, and egg to adult, respectively. Under the future climate scenarios, the number of generations (i.e., voltinism) would increase more likely by 1.5 to 2.0 times by the year of 2100 according to simulation. The findings herein firstly provided comprehensive data on thermal development of C. krombeini and implications for the management of C. krombeini populations under global warming were discussed. *Scientific Article No. 3278 of the West Virginia Agricultural and Forestry Experiment Station, Morgantown, West Virginia.