Deltamethrin resistance in the salmon louse, Lepeophtheirus salmonis (Kroyer): Maternal inheritance and reduced apoptosis.

ABSTRACT: Resistance towards deltamethrin (DMT) in the crustacean ectoparasite Lepeophtheirus salmonis (Caligidae) is a problem on fish farms lining the North Atlantic Ocean. Two Norwegian strains with different susceptibility towards DMT were crossed in the parental generation (P0), females from a sensitive strain were crossed with males from a resistant strain and vice versa. Individual susceptibility towards DMT was assessed in the second filial generation (F2). DMT resistance was only found in F2 descendants when the P0 females were from the resistant strain, pointing to maternal inheritance. Since maternal inheritance might be linked to the mitochondrial (mt) genome, the nucleotide sequences and the gene expressions of mt-genes were analysed. Twenty non-synonymous single nucleotide polymorphism

SUBMITTER: Bakke MJ 

PROVIDER: S-EPMC5981211 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature