Results 31 to 40 of about 139,012 (204)

Genomic analysis of the carboxylesterase family in the salmon louse (Lepeophtheirus salmonis).

Comp Biochem Physiol C Toxicol Pharmacol, 2021
The pyrethroid deltamethrin and the macrocyclic lactone emamectin benzoate (EMB) are used to treat infestations of farmed salmon by parasitic salmon lice, Lepeophtheirus salmonis. While the efficacy of both compounds against Atlantic populations of the parasite has decreased as a result of the evolution of resistance, the molecular mechanisms of drug ...
Tschesche C, Bekaert M, Humble JL, Bron JE, Sturm A.   +4 more
europepmc   +4 more sources

The salmon louse genome: copepod features and parasitic adaptations [PDF]

Genomics, 2021
Abstract Copepods encompass a range of ecological roles from parasites to phytoplankton grazers linking primary producers to higher trophic levels. Despite these important roles, copepod genome assemblies are scarce.
Rasmus Skern-Mauritzen, Ketil Malde, Christiane Eichner, Michael Dondrup, Tomasz Furmanek, Francois Besnier, Anna Zofia Komisarczuk, Michael Nuhn, Sussie Dalvin, Rolf B. Edvardsen, Sven Klages, Bruno Huettel, Kurt Stueber, Sindre Grotmol, Egil Karlsbakk, Paul Kersey, Jong S. Leong, Kevin A. Glover, Richard Reinhardt, Sigbjørn Lien, Inge Jonassen, Ben F. Koop, Frank Nilsen   +22 more
openaire   +8 more sources

Confidence in assessing the effectiveness of bath treatments for the control of sea lice on Norwegian salmon farms [PDF]

, 2012
The salmon louse Lepeophtheirus salmonis is the most important ectoparasite of farmed salmonids in the Northern hemisphere, having a major economic and ecological impact on the sustainability of this sector of the aquaculture industry. To a large extent,
Revie, Crawford W., Revie, Crawford, Jimenez, Daniel F., Heuch, Peter A, Gettinby, George   +4 more
core   +3 more sources

Disentangling the key drivers of salmon louse Lepeophtheirus salmonis fecundity using multiyear field samples

Aquaculture Environment Interactions, 2023
Planktonic salmon louse Lepeophtheirus salmonis salmonis larvae produced at salmon farms spread to and infect both wild and farmed salmonids. Understanding and forecasting the production and distribution of these larval stages from farms is critical to ...
C Thompson, S Bui, S Dalvin, R Skern-Mauritzen   +3 more
doaj   +1 more source

Temporal and spatial variations in lice numbers on salmon farms in the Hardanger fjord 2004-06 [PDF]

, 2009
The long and narrow Hardanger fjord in western Norway has a high density of salmon farms and has had severe salmon lice, Lepeophtheirus salmonis, problems.
Heuch, P.A., Fisheries and Aquaculture Industry Research Fund (Funder), Lees, F., Olsen, R.S., Baillie, M., Malkenes, R., Finstad, B., Revie, C.W., Norwegian Research Council (Funder), Gettinby, G.   +9 more
core   +4 more sources

Cleaner Fish Do Not Impact the Pigmentation of Salmon Lice (Lepeophtheirus salmonis) in Commercial Aquaculture Cages

Fishes, 2023
Salmon lice are one of the biggest challenges to sustainable salmonid aquaculture. The species display high evolutionary potential, which is evident by its development of resistance to numerous chemical compounds used for delousing.
Albert Kjartan Dagbjartarson Imsland, Jon Petter Berg, Velimir Nola, Lena Geitung, Tina Oldham   +4 more
doaj   +1 more source

Physiological responses in sea trout to repeated salmon louse infections and freshwater. [PDF]

Conserv Physiol
Abstract Sea trout (Salmo trutta) migrate to the seawater (SW) for increased food availability. However, heavy infestations with salmon louse (Lepeophtheirus salmonis) can make them return to freshwater (FW). The aim of the present study was to map if and how reinfection with salmon louse and repeated FW exposure affects survival ...
Fjelldal PG, Dalvin S, Sørfonn C, Skjold B, Pedersen AØ, Hansen TJ, Karlsen Ø.   +6 more
europepmc   +3 more sources

Chitin Synthases Are Critical for Reproduction, Molting, and Digestion in the Salmon Louse (Lepeophtheirus salmonis). [PDF]

Life (Basel), 2021
Chitin synthase (CHS) is a large transmembrane enzyme that polymerizes Uridine diphosphate N-acetylglucosamine into chitin. The genomes of insects often encode two chitin synthases, CHS1 and CHS2. Their functional roles have been investigated in several insects: CHS1 is mainly responsible for synthesizing chitin in the cuticle and CHS2 in the midgut ...
Harðardóttir HM, Male R, Nilsen F, Dalvin S.   +3 more
europepmc   +8 more sources

System-specific salmon louse infestation thresholds for salmon farms to minimize impacts on wild sea trout populations

Aquaculture Environment Interactions, 2021
Salmon lice Lepeophtheirus salmonis from aquaculture can cause negative impacts on sea trout Salmo trutta and other wild salmonids. Long-term records from 5 Irish rivers were used to explore relationships between annual sea trout runs and estimated total
S Shephard, P Gargan
doaj   +1 more source

Chemoreception in the salmon louse Lepeophtheirus salmonis: an electrophysiology approach [PDF]

Diseases of Aquatic Organisms, 2007
The search for effective and long-term solutions to the problems caused by salmon lice Lepeophtheirus salmonis (Krøyer, 1837) has increasingly included biological/ecological mechanisms to combat infestation. One aspect of this work focuses on the host-associated stimuli that parasites use to locate and discriminate a compatible host.
Fields, David M., Weissburg, Marc J., Browman, H. I.   +2 more
openaire   +4 more sources