Results 91 to 100 of about 42,765 (277)

Evaluation of Three Atlantic Salmon Strains for Resistance to Copepodid Sea Lice Attachment

Fishes
Sea lice have been a persistent pest of the salmon farming industry for more than 50 years. In this study, we aimed to identify if different strains of Atlantic salmon with discrete long-term lice exposure histories had variable resistance to copepodid ...
Michael R. Pietrak, Thomas A. Delomas, Demitri Lifgren, Mark P. Polinski   +3 more
doaj   +1 more source

Salmon lice sampled from wild Atlantic salmon and sea trout throughout Norway display high frequencies of the genotype associated with pyrethroid resistance

Aquaculture Environment Interactions, 2019
Atlantic salmon Salmo salar aquaculture is based on the use of open-pen sea cages, with the consequence that farmed fish are both recipients and sources of pathogens from surrounding waters.
Helene Børretzen Fjørtoft, F. Nilsen, F. Besnier, A. Stene, P. Bjørn, A. Tveten, V. Aspehaug, B. Finstad, K. Glover   +8 more
semanticscholar   +1 more source

Epidemiology of Salmonid Rickettsial Septicemia (SRS) in Farmed Salmon: The Role of Sea Lice Infestations in Mortality Risk

Journal of Fish Diseases, EarlyView.
ABSTRACT Piscirickettsia salmonis , the causal agent of salmonid rickettsial septicemia (SRS), is the main pathogen affecting farmed salmonids in Chile. Outbreaks of SRS lead to substantial economic losses for producers. Many determinants related to SRS outcomes are still poorly understood.
Benjamín Diethelm‐Varela, Nicolhole Atero, Francisca Córdova‐Bührle, Enrico L. Rezende, Stefan Gelcich, Osvaldo Sandoval, Carlos Navarro, Fernando O. Mardones   +7 more
wiley   +1 more source

Prevalence and Alternative Treatment of Head-Lice Infestation in Rural Thailand: A Community-Based Study

Korean Journal of Parasitology, 2019
Head-lice infestation, pediculosis capitis, remains a public-health burden in many countries. The widely used first-line pediculicides and alternative treatments are often too costly for use in poor socio-economic settings. Ivermectin has been considered
On-Uma Singhasivanon, S. Lawpoolsri, M. Mungthin, S. Yimsamran, N. Soonthornworasiri, S. Krudsood   +5 more
semanticscholar   +1 more source

Lawnmower Poetry and the Poetry of Lawnmowers

Critical Quarterly, EarlyView.
Francesca Gardner
wiley   +1 more source

Are CSR incidents truly bad news?

Journal of Financial Research, EarlyView.
Abstract We revisit whether disclosures of negative Corporate Social Responsibility (CSR) incidents adversely affect firms' stock prices. While univariate tests reveal significant negative abnormal returns around incident announcements, the effect disappears once firm characteristics, industry, and time‐fixed effects are controlled for.
Chen Chen, John A. Doukas, Rongyao Gloria Zhang   +2 more
wiley   +1 more source

Extensive host-switching of avian feather lice following the Cretaceous-Paleogene mass extinction event

Communications Biology, 2019
Nearly all lineages of birds host parasitic feather lice. Based on recent phylogenomic studies, the three major lineages of modern birds diverged from each other before the Cretaceous-Paleogene (K-Pg) mass extinction event.
Robert S. de Moya, Julie M. Allen, A. Sweet, Kimberly K O Walden, R. Palma, V. Smith, S. Cameron, M. P. Valim, T. Galloway, J. Weckstein, K. Johnson   +10 more
semanticscholar   +1 more source

The Voice Disrupted: Articulation, Hesitation, and Moral Seriousness in F. R. Leavis's Pedagogy

Critical Quarterly, EarlyView.
Steven Cranfield
wiley   +1 more source

Disconsolate Suffering: Joe Sacco's Comics Journalism and the Ambivalence of Humanitarian Witnessing

The Journal of Popular Culture, EarlyView.
ABSTRACT Through a close reading of Joe Sacco's seminal work of graphic journalism, Palestine, this article argues that Sacco unsettles the consoling effects of mass media by disrupting dominant narratives of difference, otherness, and spectacularized violence.
Bryant Scott
wiley   +1 more source

Snorkel technology to reduce sea lice infestations: efficacy depends on salinity at the farm site, but snorkels have minimal effects on salmon production and welfare

Aquaculture Environment Interactions, 2019
Sea lice are a critical health issue in most salmonid farming regions. New cage-based technologies can prevent infestations from occurring, such as the ‘snorkel’, which introduces an impermeable barrier that separates salmon lice Lepeophtheirus salmonis ...
F. Oppedal, S. Bui, L. Stien, K. Overton, T. Dempster   +4 more
semanticscholar   +1 more source