Results 151 to 160 of about 3,646 (184)
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Modulation of cellular innate immunity by Lepeophtheirus salmonis secretory products
Fish & Shellfish Immunology, 2014Lepeophtheirus salmonis produces pharmacologically active substances that have been shown to modify genetic expression of inflammatory mediators in SHK-1 cells and head kidney macrophages of salmon. Differences in genetic expression among genera of Oncorhynchus and Salmo reflect different susceptibilities to L. salmonis.
D L, Lewis, D E, Barker, R S, McKinley
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Journal of Microscopy, 2010 Confocal microscopy has facilitated measurement of stained lipid volume in Lepeophtheirus salmonis copepodid larvae.
James E. Bron, J E Bron
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Life History of Lepeophtheirus salmonis
Journal of the Fisheries Research Board of Canada, 1942Heavy infestations of this copepod in various developmental stages occur on Salmo salar and Salvelinus fontinalis at Moser River, N.S. Males and females occur in about equal numbers. Metanauplius and chalimus stages were present on the fins of the hosts. The male and four of the developmental stages are described and figures given.
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Cholinergic activity in different stages of sealice (Lepeophtheirus salmonis)
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1989Abstract 1. 1. All stages of sealice, from mature egg to adult, had choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) activity, indicating cholinergic nervous activity. 2. 2. This means that the insensitivity in the early stages of the sealouse against treatment with organophosphates cannot be explained by the lack of ...
Per Walday, Frode Fonnum
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An optical method for the detection of sea lice, Lepeophtheirus salmonis
Aquacultural Engineering, 1999Abstract Developments towards a novel video camera based system for estimating the sea lice burden of freely swimming salmon are reported. The spectral reflectance of sea lice and salmon skin were measured over the wavelength range 400–1100 nm. Canonical variate analysis was then used to identify a combination of reflectances that maximises the ...
R.D Tillett, C.R Bull, J.A Lines
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General and Comparative Endocrinology, 2014
Transcriptome mining is a powerful method for crustacean peptide discovery, especially when large sequence datasets are available and an appropriate reference is extant. Recently, a 206,041-sequence transcriptome for the copepod Calanus finmarchicus was mined for peptide-encoding transcripts, with ones for 17 families/subfamilies identified.
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Transcriptome mining is a powerful method for crustacean peptide discovery, especially when large sequence datasets are available and an appropriate reference is extant. Recently, a 206,041-sequence transcriptome for the copepod Calanus finmarchicus was mined for peptide-encoding transcripts, with ones for 17 families/subfamilies identified.
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Cathepsin L proteases of the parasitic copepod, Lepeophtheirus salmonis
Aquaculture, 2012Abstract The salmon louse, Lepeophtheirus salmonis , is a parasitic copepod that feeds on the mucus, skin and blood of salmonids. We describe the identification of two complete L. salmonis cathepsin L-like gene sequences and their molecular characterisation. L. salmonis cathepsin L1 (LsCL1), is 978 base pairs in length, encoding a protein of 325
McCarthy, Elaine +6 more
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Differential Gene Expression in Atlantic Salmon Infected with Lepeophtheirus salmonis
Journal of Aquatic Animal Health, 2006Abstract Lepeophtheirus salmonis is an ectoparasitic copepod that can cause serious disease outbreaks in salmonids. Previous work has shown that Atlantic salmon Salmo salar show very little, if any, tissue response to infection, whereas less-susceptible host species exhibit strong inflammatory responses.
Mark D. Fast +3 more
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Treatment of Salmon Lice (Lepeophtheirus salmonis Krøyer) with Neguvon
1980Serious epizootics of salmon lice, Lepeophtheirus salmonis, have occurred in recent years in Norwegian salmonid sea farms. A bath treatment of 300 ppm Neguvon for 15 to 60 min effectively eliminates the parasite. The treatment is applied using a special floating pen enabling the same solution to be used for several fish populations.
P. O. Brandal, E. Egidius
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Monooxygenase mediated pyrethroid detoxification in sea lice (Lepeophtheirus salmonis)
Pest Management Science, 2005AbstractThe role of monooxygenases in detoxification of the pyrethroids cypermethrin and deltamethrin was examined. Four strains of sea lice (Lepeophtheirus salmonis Krøyer) with normal or moderately reduced sensitivity towards the pyrethroids were tested in bioassays by exposure to the pyrethroid alone and in combination with an oxygenase inhibitor ...
Sigmund, Sevatdal +3 more
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