Atmospheric methane oxidizing bacteria (atmMOB) are the only known organisms that can consume methane (CH₄) directly from the air. Therefore, they are referred to as biological CH₄ sink. CH₄ is a potent greenhouse gas, and its increasing atmospheric concentration accelerates global warming. By consuming the CH₄ from the air, atmMOB mitigate global warming. ...

<p>Modern medicine is threatened by the emergence of antimicrobial resistance (AMR). New agents with unique structures and mechanisms of action are urgently needed to address the problems associated with AMR. To effectively address this challenge, a proper understanding of the structure-activity relationship is required to decipher the mechanism of action of novel compounds. Template-based design ...

Yersinia ruckeri (Y. ruckeri) the causative agent of Enteric red-mouth disease (ERM), a serious septicemic bacterial disease of salmonid fish, poses a significant challenge in salmon production. With the emergence of recirculating aquaculture system (RAS) in Norway, new biological challenges in relation to infectious disease outbreaks have arisen. There is a gap in knowledge on how potential ...

Infectious diseases are still a major problem in salmon aquaculture despite several attempts on developing prophylactic measures. Amoebic gill disease (AGD) is considered a growing threat in Norwegian salmon aquaculture. It has increased in prevalence and geographic distribution in the last years, resulting in considerable economic losses. Current treatments (i.e., freshwater and hydrogen peroxide ...

Crumb rubber (CR) produced from end of life vehicle tires is widely used on artificial sports fields and to create urban artificial surfaces. It is also used as a surrogate for tyre wear particles in experimental studies simulating the behaviour and effects of car tyre particles in the environment. It is known to contain a wide range of organic chemicals and metals, some of which are only just being ...

Heart injuries and diseases are one of the largest challenges in Atlantic salmon aquaculture. Presently, salmon experience intensive farming conditions and feeding regimes, and different viral and bacterial pathogens flourish and create cardiac health risks. Many have suggested how early life history plays a greater role in performance than previously assumed. The RCN-NFR funded project COOLFISH ...

Rømning av oppdrettslaks medfører til uønsket genetisk innblanding i den ville laksebestanden, noe som resulterer i dårligere ytelse og overlevelse hos den ville laksen. I tillegg er kjønnsmodning av oppdrettslaksen et velferdsproblem, da dette medfører en rekke negative effekter for fisken, blant disse redusert vekst, immunrespons og hypo- osmoregulatoriske evner. En mulig løsning på disse problemene ...

Climate change impacts the average temperature in the world’s oceans, as well as other environmental parameters, such as oxygen levels. These changes are threatening and challenging animals living there, including farmed species. In this trial Atlantic salmon (Salmo salar) were exposed to fluctuating temperature (12-17C) as a single stressor, and in combination with lowered level of dissolved oxygen ...

Car tire rubber particles (CTRPs) are a major source of microplastic pollution to the environment, originating from abrasion during driving or the use of crumb rubber granulates made of discarded tires. However, large knowledge gaps remain regarding the distribution and presence of CTRPs in marine environments and interaction with marine organisms. The aims of this thesis were to investigate the ...

The salmonids in today’s Norwegian aquaculture are exposed to many stressors, like suboptimal water quality, crowding and handling. This project focuses on red blood cell (RBCs) function in Atlantic salmon and how cellular responses are affected by stress. Since fish RBCs are nucleated and can change their gene expression, one of the main goals of this thesis is to better understand how the ...