We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Side effects of some insecticides on numerical response of Cryptolameus montrouzieri to Dactylopius opuntiae.
- Authors
El Aalaoui, Mohamed; Sbaghi, Mohamed
- Abstract
In recent years, Dactylopius opuntiae (Cockerell) (Hemiptera: Dactylopiidae) has become an increasing threat to the cultivation of prickly pear crops in Morocco. To control this harmful insect scale pest, biological control is usually accompanied by chemical control applications. In this context, the use of some insecticides can alter the numerical response of beneficial organisms (predators) associated with this cochineal. In this study, we investigated the effect of the residues of some insecticides «(d-limonene (60 g/L) applied at 100 mL/hL, mineral oil (780 g/L) at 2000 mL/hL, potassium salts of fatty acid (500 g/L) at 40 mL/hL, pyriproxyfen (100 g/L) at 25 mL/hL, and potassium salts of fatty acid (C7-C18) (500 g/L) at 300 mL/hL)» on the numerical response of Cryptolameus montrouzieri (Mulsant) (Coleoptera: Coccinellidae) feeding on D. opuntiae females under laboratory conditions. The sublethal concentration residues of all tested insecticides did not have lethal effects on Cryptolaemus montrouzieri females. D-limonene (Efficiency of Conversion of Ingested food (E.C.I) = 1371.85), mineral oil (E.C.I = 1383.06), potassium salts of fatty acid (E.C.I = 1583.24), and pyriproxyfen (E.C.I = 987.13) were the most compatible with the predator C. montrouzieri, as they did not significantly affect the number of eggs laid by the females compared to the untreated control. Potassium salt of fatty acid (C7–C18) (500 g/L) (E.C.I = 905.93) was the least compatible with C. montrouzieri, as it led to a significant reduction in the number of eggs laid by predatory females.
- Subjects
MOROCCO; POTASSIUM salts; OPUNTIA; INSECT pests; MINERAL oils; SCALE insects; INSECTICIDES
- Publication
Phytoparasitica, 2023, Vol 51, Issue 3, p513
- ISSN
0334-2123
- Publication type
Article
- DOI
10.1007/s12600-023-01073-y