Results 31 to 40 of about 1,643 (170)

Inclusion of photoautotrophic cultivated diatom biomass in salmon feed can deter lice.

PLoS ONE, 2021
The aim of this study was to evaluate the potential of diatom (microalgae) biomass as a lice-reducing ingredient in salmon feed. The original hypothesis was based on the fact that polyunsaturated aldehydes (PUAs), e.g.
Hans Chr Eilertsen, Edel Elvevoll, Ingeborg Hulda Giæver, Jon Brage Svenning, Lars Dalheim, Ragnhild Aven Svalheim, Birthe Vang, Sten Siikavuopio, Ragnhild Dragøy, Richard A Ingebrigtsen, Espen Hansen, Anette Hustad, Karl-Erik Eilertsen   +12 more
doaj   +1 more source

An update of the salmon louse (Lepeophtheirus salmonis) reference genome assembly

G3: Genes, Genomes, Genetics, 2022
Salmon lice have plagued the salmon farming industry and have negatively impacted salmon populations in the wild. In response, researchers have generated high density genetic maps, genome assemblies, transcriptomes, and whole-genome resequencing data to ...
Jay Joshi, Anne-Marie Flores, Kris A Christensen, Hollie Johnson, Ahmed Siah, Ben F Koop   +5 more
doaj   +1 more source

The control of sea lice in Atlantic salmon by selective breeding [PDF]

Journal of The Royal Society Interface, 2015
Sea lice threaten the welfare of farmed Atlantic salmon and the sustainability of fish farming across the world. Chemical treatments are the major method of control but drug resistance means that alternatives are urgently needed. Selective breeding can be a cheap and effective alternative.
Gharbi, Karim, Matthews, Louise, Bron, James, Roberts, Ron, Tinch, Alan, Stear, Michael   +5 more
openaire   +4 more sources

The Cost of Lice: Quantifying the Impacts of Parasitic Sea Lice on Farmed Salmon

Marine Resource Economics, 2017
AbstractDiseases are an important challenge in aquaculture. However, most of what is known about the effect of diseases comes from laboratory experiments. Using a farm-level data set containing sea lice infestation counts for all Norwegian salmon farms over an 84-month period, we empirically investigate the biological and economic impacts of observed ...
Abolofia, Jay, Wilen, James E, Asche, Frank   +2 more
openaire   +2 more sources

Effects of salmon lice Lepeophtheirus salmonis on wild sea trout Salmo trutta—a literature review

Aquaculture Environment Interactions, 2015
Salmon farming increases the abundance of salmon lice, which are ectoparasites of salmonids in the sea. Here we review the current knowledge on the effects of salmon lice on wild sea trout. Salmon lice feed on host mucus, skin and muscle, and infestation
EB Thorstad, CD Todd, I Uglem, PA Bjørn, PG Gargan, KW Vollset, E Halttunen, S Kålås, M Berg, B Finstad   +9 more
doaj   +1 more source

Understanding sources of sea lice for salmon farms in Chile [PDF]

Preventive Veterinary Medicine, 2013
The decline of fisheries over recent decades and a growing human population has coincided with an increase in aquaculture production. As farmed fish densities increase, so have their rates of infectious diseases, as predicted by the theory of density-dependent disease transmission.
Kristoffersen, A. B., Rees, E. E., Stryhn, H., Ibarra, R., Campisto, J. L., Revie, C. W., St-Hilaire, S.   +6 more
openaire   +4 more sources

A Salmon Lice Prediction Model

Preventive Veterinary Medicine
Salmon lice (Lepeophtheirus salmonis) are parasites on salmonid fish and a density-dependent constraint to the sustainable farming of salmonids in open net pens. To control the parasites, fish farmers in Norway are required to count the number of salmon lice in different developmental stages on a subset of the fish each week.
Leif Christian, Stige, Lars, Qviller, Hildegunn, Viljugrein, Saraya, Tavornpanich   +3 more
openaire   +2 more sources

Fluorescence for non-contact detection of living salmon lice on salmon skin

Journal of the European Optical Society-Rapid Publications, 2023
This work presents a promising method for automatic, non-contact, detection and counting of salmon lice infested on salmon in an aquacultural farm setting. The method uses fluorescence from chitin in the visual part of spectrum to enhance the contrast between fish skin and salmon lice, and show that the fluorescence is even strong enough to give a real-
Kari Anne Hestnes Bakke, Trine Kirkhus, Jon Tschudi   +2 more
openaire   +2 more sources

Modeling salmon lice effects on sea trout population dynamics using an individual-based approach

Aquaculture Environment Interactions, 2021
Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline.
RD Hedger, OH Diserud, B Finstad, AJ Jensen, DK Hendrichsen, O Ugedal, TF Næsje   +6 more
doaj   +1 more source

Salmon lice infection in wild salmonids in marine protected areas: Comment on Serra-Llinares et al. (2014)

Aquaculture Environment Interactions, 2016
Serra-Llinares et al. (2014; Aquacult Environ Interact 5:1-16) analysed the association between the estimated production of salmon louse copepodites in salmon farms and lice infection levels in wild salmonids.
PA Jansen, E Brun, E Skjerve
doaj   +1 more source