Results 31 to 40 of about 36,162 (242)

Genotyping of human lice suggests multiple emergencies of body lice from local head louse populations. [PDF]

PLoS Neglected Tropical Diseases, 2010
BACKGROUND: Genetic analyses of human lice have shown that the current taxonomic classification of head lice (Pediculus humanus capitis) and body lice (Pediculus humanus humanus) does not reflect their phylogenetic organization.
Wenjun Li, Gabriel Ortiz, Pierre-Edouard Fournier, Gregory Gimenez, David L Reed, Barry Pittendrigh, Didier Raoult   +6 more
doaj   +1 more source

Salmon lice loads on Atlantic salmon smolts associated with reduced welfare and increased population mortalities

Aquaculture Environment Interactions, 2023
Modelling potential impacts of salmon lice Lepeophtheirus salmonis on Atlantic salmon Salmo salar requires estimation of the levels that cause serious sub-lethal physiological impacts and direct mortality.
SC Ives, JD Armstrong, C Collins, M Moriarty, AG Murray   +4 more
doaj   +1 more source

On the origin of Halipeurus heraldicus on Round Island petrels: cophylogenetic relationships between petrels and their chewing lice [PDF]

, 2010
Lice phylogenetic relationships have often been used to elucidate host relationships and vice versa. In this study, we investigate the louse genus Halipeurus which parasitizes bird hosts in the families Procellariidae, Hydrobatidae and Pelecanoididae ...
Hammer, S., Palma, R.L., Hughes, J., Brown, R., Bugoni, L., Joseph Hughes, Sjurdur Hammer, Ricardo L. Palma, Leandro Bugoni, Ruth Brown   +9 more
core   +1 more source

Caligus rogercresseyi acetylcholinesterase types and variants: a potential marker for organophosphate resistance

Parasites & Vectors, 2018
Background Control of the sea louse Caligus rogercresseyi in the Chilean salmonid industry is reliant on chemical treatments. Azamethiphos was introduced in 2013, although other organophosphates were previously used.
Celia Agusti-Ridaura, Michael Dondrup, Tor E. Horsberg, Jong S. Leong, Ben F. Koop, Sandra Bravo, Julio Mendoza, Kiranpreet Kaur   +7 more
doaj   +1 more source

Acoustic Delicing of Atlantic Salmon (Salmo salar): Fish Welfare and Salmon Lice (Lepeophtheirus salmonis) Dynamics

Journal of Marine Science and Engineering, 2022
Acoustic lice treatment (AcuLice) is a newly developed system, which uses a composite acoustic sound image with low-frequency sound to remove salmon lice (Lepeophtheirus salmonis) from Atlantic salmon (Salmo salar).
Bibbi Maria Kállay Hjelle, Albert Kjartan Dagbjartarson Imsland, Pablo Vigo Balseiro, Sigurd Olav Handeland   +3 more
doaj   +1 more source

Phenylalanine Hydroxylase RNAi Knockdown Negatively Affects Larval Development, Molting and Swimming Performance of Salmon Lice

Frontiers in Marine Science, 2020
Phenylalanine hydroxylase (PAH) is a crucial enzyme involved in tyrosine biosynthesis, having roles in neurological and physiological processes. The purpose of PAH has received little attention in crustaceans despite extensive investigations in other ...
Prashanna Guragain, Prashanna Guragain, Bjørnar Sporsheim, Astrid Skjesol, Anna Solvang Båtnes, Yngvar Olsen, Atle M. Bones, Atle M. Bones, Per Winge, Per Winge   +9 more
doaj   +1 more source

Evidence that head and body lice on homeless persons have the same genotype. [PDF]

PLoS ONE, 2012
Human head lice and body lice are morphologically and biologically similar but have distinct ecologies. They were shown to have almost the same basic genetic content (one gene is absent in head lice), but differentially express certain genes, presumably ...
Aurélie Veracx, Romain Rivet, Karen D McCoy, Philippe Brouqui, Didier Raoult   +4 more
doaj   +1 more source

Epidemiological and therapeutic studies on sheep lice in Sayint district, South Wollo Zone, Northeast Ethiopia

Frontiers in Veterinary Science, 2022
An epidemiological (cross-sectional) and therapeutic (randomized controlled field trial) study was conducted on sheep lice in Sayint district, South Wollo, Northeast Ethiopia.
Simegn Legesse, Mussie Hailemelekot, Habtamu Tamrat, Yeshwas F. Alemu   +3 more
doaj   +1 more source

Household-wide ivermectin treatment for head lice in an impoverished community: randomized observer-blinded controlled trial. [PDF]

, 2009
OBJECTIVE: To generate evidence on the effectiveness of household-wide treatment for preventing the transmission of pediculosis capitis (head lice) in resource-poor communities.
Pilger, Daniel, Heukelbach, Jorg, Feldmeier, Hermann, Jorg Heukelbach, Gernot Fengler, Oliveira, Fabiola Araujo, Hermann Feldmeier, Daniel Pilger, Khakban, Adak, Fengler, Gernot, Fabiola Araujo Oliveira, Adak Khakban   +11 more
core   +1 more source

Salmon louse labial gland enzymes: implications for host settlement and immune modulation

Frontiers in Genetics
Salmon louse (Lepeophtheirus salmonis) is a skin- and blood-feeding ectoparasite, infesting salmonids. While feeding, labial gland proteins from the salmon louse may be deposited on the Atlantic salmon (Salmo salar) skin.
Helena Marie Doherty Midtbø, Christiane Eichner, Lars Are Hamre, Michael Dondrup, Linn Flesland, Kristoffer Helland Tysseland, Heidi Kongshaug, Andreas Borchel, Renate Hvidsten Skoge, Frank Nilsen, Aina-Cathrine Øvergård   +10 more
doaj   +1 more source