Toxicities and sublethal effects of seven neonicotinoid insecticides on survival, growth and reproduction of imidacloprid‐resistant cotton aphid, Aphis gossypii

Abstract

The results indicated that dinotefuran is the most effective insecticide for use against imidacloprid-resistant A. gossypii. To avoid further resistance development, the use of nitenpyram, acetamiprid and thiacloprid should be avoided on imidacloprid-resistant populations of A. gossypii.

The cross-resistance patterns and biochemical characteristics of an imidacloprid-resistant strain of the cotton aphid

“…Neonicotinoid insecticides are classifiable into three generations according to structural analysis, imidacloprid, acetamiprid and nitenpyram belong to the first generation of neonicotinoids with a heterocycle of chloropyridine; thiamethoxam and clothianidin belong to the second generation with a heterocycle of chlorinated thiazole; dinotefuran is a third generation with a heterocycle of tetrahydrofuran. 29) The RF 75 strain showed the highest level of resistance to all three generations of neonicotinoid compounds (>10-fold). The low levels of cross-resistance to the first-generation neonicotinoids (acetamiprid and nitenpyram) (<6-fold) also have been described at the 27th (24-fold) and 45th (41.7-fold) generations for the imidacloprid-resistant strain of A. gossypii in our laboratory in previous studies.…”

“…The low levels of cross-resistance to the first-generation neonicotinoids (acetamiprid and nitenpyram) (<6-fold) also have been described at the 27th (24-fold) and 45th (41.7-fold) generations for the imidacloprid-resistant strain of A. gossypii in our laboratory in previous studies. 29,30) However, the imidacloprid-resistant strain of A. gossypii at the 45th generation did not develop cross-resistance to the second (thiamethoxam, clothianidin) or third (dinotefuran) generation of neonicotinoid compounds. 29) Yang et al 30) have reported that the imidacloprid-resistant strain of A. gossypii at the 27th generation exhibited obviously negative cross-resistance to pymetrozine (0.28-fold).…”

“…29,30) However, the imidacloprid-resistant strain of A. gossypii at the 45th generation did not develop cross-resistance to the second (thiamethoxam, clothianidin) or third (dinotefuran) generation of neonicotinoid compounds. 29) Yang et al 30) have reported that the imidacloprid-resistant strain of A. gossypii at the 27th generation exhibited obviously negative cross-resistance to pymetrozine (0.28-fold). However, the RF 75 strain showed 5.28-fold resistance to pymetrozine in this study.…”

Control of Curly Top in Sugar Beet with Seed and Foliar Insecticides

“…Despite the widespread use of neonicotinoid products for pest control, reported cases of resistance have been relatively manageable or geographically localized (1,7,10,11,17,18,20,21,31). However, given the importance of the neonicotinoid seed treatments for reducing curly top and that all seed in some areas require the seed treatments, incorporating a resistance management program into sugar beet production should be considered.…”

Characterization of imidacloprid resistance in Aphis gossypii (Glover) (Hemiptera: Aphididae) in Southern Iran

“…Because of distinctive action mechanism, neonicotinoids have strong insecticidal activity, especially against hemipteran pests, also low levels of toxicity to mammals and relatively little toxicity to non-target insects are reported (Nauen & Denholm, 2005). In spite of slow development of resistance to neonicotinoids, several insect pests including A. gossypii have been shown to have the ability of resistance development (Naun & Denholm, 2005;Shi et al, 2011). …”