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Pest Manag Sci

Title:		Tethered-flight performance of thermally-acclimated pest fruit flies (Diptera: Tephritidae) suggests that heat waves may promote the spread of Bactrocera species
Author(s):		Malod K; Bali ED; Gledel C; Moquet L; Bierman A; Bataka E; Weldon CW; Karsten M; Delatte H; Papadopoulos NT; Terblanche JS;
Address:		"Department of Conservation Ecology and Entomology, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa. Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Volos, Greece. CIRAD, UMR PVBM, Saint-Pierre, France. Department of Zoology and Entomology, University of Pretoria, Hatfield, South Africa. CIRAD, UMR PVBMT, Antananarivo, Madagascar"
Journal Title:		Pest Manag Sci
Year:		2023
Volume:		20230613
Issue:
Page Number:		-
DOI:		10.1002/ps.7611
ISSN/ISBN:		1526-4998 (Electronic) 1526-498X (Linking)
Abstract:		"BACKGROUND: Thermal history may induce phenotypic plasticity in traits that affect performance and fitness. One type of plastic response triggered by thermal history is acclimation. Because flight is linked to movement in the landscape, trapping and detection rates, and underpins the success of pest management tactics, it is particularly important to understand how thermal history may affect pest insect flight performance. We investigated the tethered-flight performance of Ceratitis capitata, Bactrocera dorsalis and Bactrocera zonata (Diptera: Tephritidae), acclimated for 48 h at 20, 25 or 30 degrees C and tested at 25 degrees C. We recorded the total distance, average speed, number of flight events and time spent flying during 2-h tests. We also characterized morphometric traits (body mass, wing shape and wing loading) that can affect flight performance. RESULTS: The main factor affecting most flight traits was body mass. The heaviest species, B. dorsalis, flew further, was faster and stopped less often in comparison with the two other species. Bactrocera species exhibited faster and longer flight when compared with C. capitata, which may be associated with the shape of their wings. Moreover, thermal acclimation had sex- and species-specific effects on flight performance. Flies acclimated at 20 degrees C stopped more often, spent less time flying and, ultimately, covered shorter distances. CONCLUSION: Flight performance of B. dorsalis is greater than that of B. zonata and C. capitata. The effects of thermal acclimation are species-specific. Warmer acclimation temperatures may allow pest fruit flies to disperse further and faster. (c) 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry"
Keywords:		Tephritidae flight performance phenotypic plasticity thermal history;
Notes:		"PublisherMalod, Kevin Bali, Eleftheria-Maria D Gledel, Corentin Moquet, Laura Bierman, Anandi Bataka, Evmorfia Weldon, Christopher W Karsten, Minette Delatte, Helene Papadopoulos, Nikos T Terblanche, John S eng Horizon 2020 Framework Programme/ England 2023/06/13 Pest Manag Sci. 2023 Jun 13. doi: 10.1002/ps.7611"