Repeated exposure affects susceptibility and responses of Atlantic salmon (<i>Salmo salar</i>) towards the ectoparasitic salmon lice (<i>Lepeophtheirus salmonis</i>).

ABSTRACT: Atlantic salmon (Salmo salar) is repeatedly exposed to and infected with ectoparasitic salmon lice (Lepeophtheirus salmonis) both in farms and in nature. However, this is not reflected in laboratory experiments where fish typically are infected only once. To investigate if a previous lice infection affects host response to subsequent infections, fish received 4 different experimental treatments; including 2 groups of fish that had previously been infected either with adult or infective salmon lice larvae (copepodids). Thereafter, fish in all treatment groups were infected with either a double or a single dose of copepodids originating from the same cohort. Fish were sampled when lice had developed into the chalimus, the pre-adult and the adult stage, respectively. Both the sp

SUBMITTER: Stolen Ugelvik M 

PROVIDER: S-EPMC10941223 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature