Laboratory of Biology and Insect Rearing, Department of Agricultural Production Sciences, São Paulo State University, Jaboticabal, 14884-900, São Paulo, Brazil.
Laboratory of Biology and Insect Rearing, Department of Agricultural Production Sciences, São Paulo State University, Jaboticabal, 14884-900, São Paulo, Brazil.
J Therm Biol. 2020 Oct;93:102686. doi: 10.1016/j.jtherbio.2020.102686. Epub 2020 Aug 10.
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 (T), and maximum predation rate (T/T) 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/T 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.
温度调节着营养相互作用，包括害虫和捕食者之间的关系，功能反应研究通常用于确定捕食者作为生物防治剂的适宜性。我们研究了温度对捕食者 Euborellia annulipes (Lucas)（直翅目：Anisolabididae 科）捕食小菜蛾 Plutella xylostella (L.)（鳞翅目：Plutellidae 科）幼虫的功能反应的影响。通过使用七种猎物密度和三种热条件，估计了捕食率、功能反应类型、攻击率（a'）、处理时间（T）和捕食者的最大捕食率（T/T）。E. annulipes 对 P. xylostella 的功能反应随温度而变化，在较低温度（18°C 和 25°C）下为 III 型，在 32°C 下为 II 型。我们观察到在 25°C 和 32°C 时 a'值增加，Th 值降低，T/T 值最高随着热条件的增加而增加。我们的研究结果表明，E. annulipes 在不同的热条件下可以有效地控制 P. xylostella，但它的捕食行为会随着温度的变化而变化。
