Blar i NIVA Open Access Archive på forfatter "Powell, Mark"
-
Disinfection of Paramoebae perurans with UV and ozoneIn situ dose-response testing
Wennberg, Aina Charlotte; Powell, Mark (NIVA-rapport;6909, Research report, 2015)Lab cultures of the amoebae Paramoebae perurans was exposed to UV irradiance at varying durations or ozonated seawater with varying residual oxidant (TRO) concentrations. The response to the treatment was observed as both ... -
Effects of cnidarian biofouling on salmon gill health and development of amoebic gill disease
Bloecher, Nina; Powell, Mark; Hytterød, Sigurd; Gjessing, Mona; Wiik-Nilsen, Jannicke; Mohammad, Saima N.; Johansen, Joachim; Hansen, Haakon; Floerl, Oliver; Gjevre, Anne-Gerd (Journal article; Peer reviewed, 2018)This study examines the potential implications of biofouling management on the development of an infectious disease in Norwegian farmed salmon. The hydroid Ectopleura larynx frequently colonises cage nets at high densities ... -
Hypoxia tolerance and responses to hypoxic stress during heart and skeletal muscle inflammation in Atlantic salmon (Salmo salar)
Lund, Morten; Dahle, Maria Krudtaa; Timmerhaus, Gerrit; Alarcon, Marta; Powell, Mark; Aspehaug, Vidar; Rimstad, Espen; Jørgensen, Sven Martin (Journal article; Peer reviewed, 2017)Heart and skeletal muscle inflammation (HSMI) is associated with Piscine orthoreovirus (PRV) infection and is an important disease in Atlantic salmon (Salmo salar) aquaculture. Since PRV infects erythrocytes and farmed ... -
No environmental effect on vaccine-induced reduced growth in Atlantic salmon Salmo salar smolts
Fraser, Thomas; Fjelldal, Per Gunnar; Sommerset, Ingunn; Søfteland, Tina; Høstmark, Ole; Powell, Mark; Heen, Vegar; Hansen, Tom Johnny (Peer reviewed; Journal article, 2020)Oil-adjuvanted vaccines reduce long-term growth in farmed Atlantic salmon Salmo salar, possibly via an increase in metabolic rate due to the energetic demands of the immune system. We tested this hypothesis by comparing ...