Sea lice exposure to non-lethal levels of emamectin benzoate after treatments: a potential risk factor for drug resistance
نویسندگان
چکیده
منابع مشابه
Transcriptomic responses to emamectin benzoate in Pacific and Atlantic Canada salmon lice Lepeophtheirus salmonis with differing levels of drug resistance
Salmon lice Lepeophtheirus salmonis are an ecologically and economically important parasite of wild and farmed salmon. In Scotland, Norway, and Eastern Canada, L. salmonis have developed resistance to emamectin benzoate (EMB), one of the few parasiticides available for salmon lice. Drug resistance mechanisms can be complex, potentially differing among populations and involving multiple genes wi...
متن کاملCommercial trials using emamectin benzoate to control sea lice Lepeophtheirus salmonis infestations in Atlantic salmon Salmo salar.
Two trials were conducted at commercial salmon farms to evaluate the efficacy of emamectin benzoate (Slice, 0.2% aquaculture pre-mix, Schering-Plough Animal Health) as a treatment for sea lice Lepeophtheirus salmonis (Krøyer) and Caligus elongatus Nordmann infestations in Atlantic salmon Salmo salar L. Trials were carried out in 15 m2 commercial sea pens, at temperatures of 5.5 to 7.5 degrees C...
متن کاملControl of sea lice on farmed Atlantic salmon S. salar L. with the oral treatment Emamectin benzoate (SLICE)
The use of orally administered emamectin benzoate (SLICE) to control sea lice was assessed for all stock on two salmon farms. Contrasting treatment regimes were used with two oral treatments in farm E in the second production year and one oral treatment in farm L with follow up with bath treatments. Emamectin benzoate surface coated on feed was administered as 50 ug kg1 fish biomass day-1 over ...
متن کاملThe Efficacy of Emamectin Benzoate against Infestations of Lepeophtheirus salmonis on Farmed Atlantic Salmon (Salmo salar L) in Scotland, 2002–2006
BACKGROUND Infestations of the parasitic copepod Lepeophtheirus salmonis, commonly referred to as sea lice, represent a major challenge to commercial salmon aquaculture. Dependence on a limited number of theraputants to control such infestations has led to concerns of reduced sensitivity in some sea lice populations. This study investigates trends in the efficacy of the in-feed treatment emamec...
متن کاملTolerance of Atlantic salmon, Salmo salar L., and ž / rainbow trout, Oncorhynchus mykiss Walbaum , to emamectin benzoate, a new orally administered treatment for sea lice
Ž . Ž . Atlantic salmon weight range 289–484 g and rainbow trout weight range 166–387 g , held in seawater, were fed medicated diets containing graded levels of emamectin benzoate for 7 days. y1 y1 Ž Nominal dose rates were 0, 100, 250 and 500 mg kg body weight day equivalent to 0, 2, 5 . and 10 times recommended dose rate for treatment of sea lice . Fish were observed for a further 7 days to d...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2020
ISSN: 2045-2322
DOI: 10.1038/s41598-020-57594-7