Responses of the predatory species, Coccinella undecimpunctata L. (Coleoptera: Coccinellidae), to the volatiles from its prey, Aphis craccivora Koch. and Vicia faba plant

Egyptian Journal of Biological Pest Control

Hany Ahmed Fouad¹ 

[1] Plant Protection Department, Faculty of Agriculture, Sohag University, Sohag, Egypt;

关键词: Coccinella undecimpunctata;    Aphis craccivora;    Vicia faba;    Olfactometer;    Free choice;    Semiochemicals;   

DOI  :  10.1186/s41938-021-00427-0

来源: Springer

【 摘 要 】

BackgroundPlants after infestation emit specific volatiles, which can influence foraging behavior of insect predators of herbivores. This work aimed to evaluate the responses of the predatory species, Coccinella undecimpunctata L. (Coleoptera: Coccinellidae), adults to volatiles emitted from its cowpea aphid prey, Aphis craccivora (Koch.), and from Vicia faba plant to improve the efficiency of searching for its prey. An olfactometer bioassay was used for this investigation.ResultsThe results revealed that both male and female of C. undecimpunctata significantly used olfactory cues from infested plant + aphids, but the mated females exhibited a complete response (47.50%). The mated male was attracted to aphids (30.0%) more than other tested predatory types, indicating the capacity to exploit volatiles induced by aphids.ConclusionsThe results supported that C. undecimpunctata adult uses plant volatiles induced by A. craccivora infestation, which might act as reliable indicators to find its prey.

【 授权许可】

CC BY