Temperature-dependent functional response of Euborellia annulipes (Dermaptera: Anisolabididae) preying on Plutella xylostella (Lepidoptera: Plutellidae) larvae |
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| Institution: | 1. Institute for Global Food Security, School of Biological Sciences, Queen''s University Belfast, Medical Biology Centre, Belfast BT9 7BL, Northern Ireland, UK;2. DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown 6140, South Africa;3. Ecology and Evolutionary Biology, School of Biological Sciences, University of Reading, Harborne Building, Reading RG6 6AS, England, UK;4. Ecology and Resource Management, University of Venda, Thohoyandou 0950, Limpopo, South Africa;5. South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown 6140, South Africa;6. Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, P. Bag 16, Palapye, Botswana;1. Federal Institute Goiano-Campus Morrinhos (IFGOIANO), Morrinhos, GO, Brazil;2. São Paulo State University “Júlio de Mesquita Filho” (UNESP/FCAV), Jaboticabal, SP, Brazil;1. IRTA-Estació Experimental de Lleida, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc Gardeny, edifici fruitcentre, 25003 Lleida, Spain;2. Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida, Alcalde Rovira Roure, 191, 25198 Lleida, Spain;3. Centre UdL-IRTA de R+D de Lleida, Alcalde Rovira Roure, 191, 25198 Lleida, Spain |
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| Abstract: | Temperature mediates trophic interactions, including relationships between insect pests and predators, and functional response studies are often used to determine the suitability of predators as biocontrol agents. We investigated the effects of temperature on the functional response of Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae) preying on Plutella xylostella (L.) (Lepidoptera: Plutellidae) larvae. Predation rate, type of functional response, attack rate (a'), handling time (Th), and maximum predation rate (T/Th) of the predator were estimated using seven prey densities and three thermal conditions. The functional response of E. annulipes to P. xylostella was temperature-dependent, type III under the lower temperatur (18°C and 25 °C) , and type II at 32 °C. We observed increasing values of a’ in 25 °C and 32 °C, decreasing values of Th and highest T/Th as the thermal condition increased. Our findings suggest that E. annulipes could be effective to control P. xylostella under different thermal conditions, however its predation behavior changes according to temperature variation. |
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| Keywords: | Biological control Earwigs Predator-prey interaction Trophic dynamics Warming |
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