Results 131 to 140 of about 1,064 (166)
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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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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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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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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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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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Role of Semiochemicals in Mate Location by Parasitic Sea Louse, Lepeophtheirus salmonis
Journal of Chemical Ecology, 2002The role of olfaction and diffusible pheromones in mate location behavior of sea lice, Lepeophtheirus salmonis, was assessed with Y-tube behavioral bioassays. The pheromone "emitting" animals were located in a chamber in one arm of a Y-tube arena, with artificial seawater flowing through both arms.
Anna, Ingvarsdóttir +6 more
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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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Characterisation of cathepsin B-like cysteine protease of Lepeophtheirus salmonis
Aquaculture, 2010Lepeophtheirus salmonis, otherwise known as the salmon louse, is an ectoparasite that feeds on Salmo salar (Atlantic salmon), causing large losses to the aquaculture industry. The parasite feeds on the skin and mucus tissues of its host causing extensive damage and bleeding.
Eleanor Cunningham +6 more
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