TY  - JOUR
T1  - Investigating the Effect of Chlorpyriphos and Spirotetramat Insecticides on the Functional Response of Aenasius bambawalei
A1  - Johnson Stanley
A1  - Gnanadhas Preetha
JF  - Entomology and Applied Science Letters
JO  - Entomol Appl Sci Lett
SN  - 2349-2864
Y1  - 2024
VL  - 11
IS  - 2
DO  - 10.51847/uVDdv6yrPt
SP  - 40
EP  - 47
N2  - Phenacoccus solenopsis Tinsley is a polyphagous insect that has become a drastic threat to agriculture in subtropical and tropical regions of the world since the first decade of the 20th century. Aenasius bambawalei Hayat is an endoparasitoid that parasitizes the third instar nymphs of P. solenopsis. In the current research, the functional response of this parasitoid to sublethal doses of spirotetramat and chlorpyriphos was investigated on third-instar nymphs of P. solenopsis at a 27 ± 1 °C temperature, relative humidity of 65 ± 5%, and a 10:14 h light-dark cycle. The findings of logistic regression revealed that the functional response in all three treatments of control, chlorpyriphos, and spirotetramat was of the second type. The search rate (a) of the bee in the control, spirotetramat, and chlorpyriphos treatments was calculated as 0.2609, 0.1107, and 0.0556 times per hour, respectively, which was 57% and 78% lower than the control in the spirotetramat and chlorpyriphos treatments, respectively. The access time (Th) in the control, spirotetramat, and chlorpyriphos treatments was calculated as 5.018, 6.335, and 9.390 hours, respectively. In the spirotetramat and chlorpyriphos treatments, the access time was about 26% and 87% higher than the control treatment, respectively. The access rate was also determined as 4.63, 3.28, and 2.55 host nymphs in the control, spirotetramat, and chlorpyriphos treatments, respectively, which was 31% and 45% lower than the control in the spirotetramat and chlorpyriphos treatments. The findings of this research revealed that the insecticides spirotetramat and chlorpyriphos, even at low doses, hurt the functional response behavior of bees and can cause disruption in biological control.
UR  - https://easletters.com/article/investigating-the-effect-of-chlorpyriphos-and-spirotetramat-insecticides-on-the-functional-response-9moqz73hg1s4kjr
ER  -