Gamble_2023_Environ.Pollut_322_121165

Reference

Title : Development of insecticide resistance in Hyalella azteca - Gamble_2023_Environ.Pollut_322_121165
Author(s) : Gamble NE , Huff Hartz KE , Figuero AE , Poynton HC , Lydy MJ
Ref : Environ Pollut , :121165 , 2023
Abstract :

Hyalella azteca are epibenthic amphipods that have developed resistance to pyrethroid and organophosphate insecticides due to single amino acid substitutions in the voltage-gated sodium channel and the acetylcholinesterase-1 gene, respectively. Aquatic systems are often contaminated with several different types of insecticides, therefore there is a possibility that H. azteca have also developed resistance to other classes of insecticides. The aims of the current study were to verify that pyrethroid- and organophosphate-resistant H. azteca have retained their resistance after being cultured in the absence of selective pressure for 5 years (Escondido Creek population) and 9 years (Mosher Slough population), to determine if these populations have cross-resistance to carbaryl (carbamate) and 4,4'-dichlorodiphenyltrichloroethane (DDT; organochlorine), and determine whether previous field exposure to fipronil (phenylpyrazole) and imidacloprid (neonicotinoid) caused resistance in cultured pyrethroid- and organophosphate-resistant H. azteca populations. Escondido Creek and Mosher Slough H. azteca populations both maintained high tolerances for bifenthrin due to L925I and I936F amino acid substitutions. Resistance was also found for chlorpyrifos in the Escondido Creek and Mosher Slough populations with lower genotype frequencies of the G119S substitution, indicating that additional factors may be responsible for organophosphate resistance in this study. Mosher Slough H. azteca were moderately resistant to DDT, and Escondido Creek and Mosher Slough H. azteca were moderately resistant to carbaryl, suggesting cross-resistance. No differences were observed in acute toxicity values across the three populations of H. azteca for fipronil and imidacloprid, and this is possibly due to the lack of exposure to toxic concentrations of these insecticides in the field and lack of similar modes of action to pyrethroids and organophosphates. Resistance is known to be associated with fitness costs that can place insecticide-resistant populations at risk for decline through decreased survival and reduced fecundity.

PubMedSearch : Gamble_2023_Environ.Pollut_322_121165
PubMedID: 36720337
Gene_locus related to this paper: hyaaz-ACHE1

Related information

Mutation G119S_hyaaz-ACHE1
Gene_locus hyaaz-ACHE1

Citations formats

Gamble NE, Huff Hartz KE, Figuero AE, Poynton HC, Lydy MJ (2023)
Development of insecticide resistance in Hyalella azteca
Environ Pollut :121165

Gamble NE, Huff Hartz KE, Figuero AE, Poynton HC, Lydy MJ (2023)
Environ Pollut :121165