A5015443330- Parasite Biology and Host Interactions
- Aquaculture disease management and microbiota
- Insect and Pesticide Research
- Parasitic Infections and Diagnostics
- Genetic diversity and population structure
- Parasites and Host Interactions
- Identification and Quantification in Food
- Environmental Toxicology and Ecotoxicology
- Aquaculture Nutrition and Growth
- Helminth infection and control
- Physiological and biochemical adaptations
- Animal Behavior and Reproduction
- Fish Ecology and Management Studies
- Marine Invertebrate Physiology and Ecology
- Vector-borne infectious diseases
- Myxozoan Parasites in Aquatic Species
- Vibrio bacteria research studies
- Zebrafish Biomedical Research Applications
- Environmental DNA in Biodiversity Studies
- Bird parasitology and diseases
- Insects and Parasite Interactions
University of Prince Edward Island
2012-2020
Health PEI
2018
Abstract Salmon lice Lepeophtheirus salmonis are an ecologically and economically important parasite of wild farmed salmon. In Scotland, Norway, Eastern Canada, L. have developed resistance to emamectin benzoate (EMB), one the few parasiticides available for salmon lice. Drug mechanisms can be complex, potentially differing among populations involving multiple genes with additive effects (i.e., polygenic resistance). Indicators development may enable early detection countermeasures avoid...
Salmon lice, Lepeophtheirus salmonis (Copepoda: Caligidae), are highly important ectoparasites of farmed and wild salmonids, cause multi-million dollar losses to the salmon aquaculture industry annually. lice display extensive sexual dimorphism in ontogeny, morphology, physiology, behavior, more. Therefore, identification transcripts with differential expression between males females (sex-biased transcripts) may help elucidate relationship selection sexually dimorphic characteristics....
Drug resistance in the salmon louse Lepeophtheirus salmonis is a global issue for Atlantic aquaculture. Multiple has been described across most available compound classes with exception of benzoylureas. To target this gap effective management L. and other species sea lice (e.g. Caligus spp.), Elanco Animal Health developing an in-feed treatment containing lufenuron (a benzoylurea) to be administered prior seawater transfer smolts provide long-term protection against infestations....
Abstract Lepeophtheirus salmonis infections in Atlantic salmon, S almo salar , have been characterized by little to no hyperplastic response and a biphasic immune that results chronic inflammation with tissue repair as the infection progresses. We hypothesized C p G administration prior lice exposure would enhance epithelial inflammatory mechanisms boost A tlantic salmon L . leading greater protection against infection. administered multiple exposures of two groups compared responses...
Abstract Control of sea lice, L epeophtheirus salmonis , on farmed A tlantic salmon, S almo salar relies heavily chemotherapeutants. However, reduced efficacy many treatments and need for integrated lice management plans require innovative strategies. Resistance to emamectin benzoate (EMB), a major parasiticide, has been linked with P‐glycoprotein (P‐gp) expression. We hypothesized that host immunostimulation would complement EMB treatment outcome. Lepeophtheirus ‐infected Atlantic salmon...
Abstract Several immunostimulatory feed additives have shown the ability to induce protective responses in A tlantic salmon infection with L epeophtheirus salmonis . However, even most encouraging results rarely surpass a 50% index host. That fact coupled well‐documented limitations of single‐therapy strategies effective management parasitic infections generally make it imperative identify therapies that can be combined an integrated pest approach for sea lice. With this mind, we...
Salmon lice ( Lepeophtheirus salmonis) are important ectoparasites of wild and farmed salmonids cause major losses to the salmon farming industry throughout Northern Hemisphere. With emergence resistance several commonly used parasiticides, novel control strategies integration multiple treatment options needed, including host immunostimulation. Here, we investigate effects a functional feed containing peptidoglycan nucleotide formulation on L. salmonis infection Atlantic Salmo salar) by...
Microsporidia are highly specialized, parasitic fungi that infect a wide range of eukaryotic hosts from all major taxa. Infections cause variety damaging effects on host physiology increased stress to death. The microsporidian Facilispora margolisi infects the Pacific salmon louse (Lepeophtheirus salmonis oncorhynchi), an economically and ecologically important ectoparasitic copepod can impact wild cultured salmonids. Vertical transmission F. was demonstrated by using PCR in situ...
Abstract Hydrogen peroxide (H 2 O ) is used to treat sea lice infections of farmed salmonids in the Atlantic and Pacific Oceans issues with resistance this treatment, others are a major threat sustainability industry. The objectives study were determine how H exposure affects survival antioxidant‐related gene expression salmon ( Lepeophtheirus salmonis collected from Bay Fundy, New Brunswick. maximum recommended dose 1,800 mg/L, while EC 50 values (with 95% CI) for population tested 1,486...
Hydrogen Peroxide is an oxidative chemical used as a topical treatment via bath exposures in salmonid aquaculture to mitigate external infections such sea lice and amoebic gill disease. Protocols can depend on each individual site treatment, which varies environmental temperature, dose concentration exposure time. Treatments this, addition insults, increasing ocean temperatures other farm management practices occurring simultaneously and/or chronically lead Complex Gill Disease (CGD). The...
Hydrogen Peroxide is an oxidative chemical used as a topical treatment via bath exposures in salmonid aquaculture to mitigate external infections such sea lice and amoebic gill disease. Protocols can depend on each individual site treatment, which varies environmental temperature, dose concentration exposure time. Treatments this, addition insults, increasing ocean temperatures other farm management practices occurring simultaneously and/or chronically lead Complex Gill Disease (CGD). The...
The salmon louse Lepeophtheirus salmonis (Krøyer 1837) displays numerous sexually dimorphic characteristics. Insights into their underlying molecular components have only recently been explored, which serve to better understand both the basic biology of louse, associated impacts on drug sensitivity, and evolution resistance. Expression 16 L. genes putatively involved in sexual dimorphism reproduction were used determine differences between sexes responses mating using RT-qPCR pre-adult adult...