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A novel non-permanent attachment method for bird-borne tracking devices using 3D-printed clampsNARA Subscribed
Collecting GPS positions on bird movements requires secure and efficient attachment methods that maintain animal welfare. For seabirds, one of the most threatened bird groups globally, non-permanent attachment methods are often preferred in short-term studies due to their lower risk of injury, feather damage, or long-term behavioral disruption. However, most available non-permanent solutions, such as tape or temporary adhesive...
Divergent migratory strategies of black guillemots from two colonies in the Norwegian SeaNARA Subscribed
Coastal zones are heavily impacted by anthropogenic development. However, they are also important habitats for seabirds, some of which are coastal year-round. We investigated the non-breeding season distribution and activity patterns of black guillemots ( Cepphus grylle ), a year-round coastal seabird species, from two colonies in central/northern Norway over multiple years using geolocator loggers equipped with wet-dry sensor...
Proximity to natural habitat is known to enhance pollination services in large‐scale agriculture, but it remains unclear whether this holds in tropical smallholder farms. These systems are embedded in ecologically complex landscapes, central to global food security, and depend heavily on biodiversity‐derived ecosystem services. We conducted a systematic review and meta‐analysis of 35 studies assessing the relationship between...
Can dietary C:N ratio influence water quality and microbiology in recirculating aquaculture systems?NARA Subscribed
The potential impacts of diet composition on water quality in recirculating aquaculture systems (RAS) have been studied only to a limited extent. This study examined the effects of different dietary C:N ratios on physiochemical water quality and associated microbiology in 12 pilot scale freshwater RAS with rainbow trout ( Oncorhynchus mykiss ). By adjusting the proportions of protein, carbohydrate, and fat, four diets with dif...
Spatial distribution of selenium-mercury in Arctic seabirdsNARA Subscribed
Flavobacteria are among the most important pathogens in freshwater salmonid aquaculture worldwide. Due to concerns regarding development of antibiotic resistance, phage therapy has been proposed as a solution to decrease pathogen load. However, application of phages is challenged by the development of phage resistance, and knowledge of the mechanisms and implications of phage resistance is therefore required. To study this, 27...
Seventy five percent of the world's food crops benefit from insect pollination. Hence, there has been increased interest in how global change drivers impact this critical ecosystem service. Because standardized data on crop pollination are rarely available, we are limited in our capacity to understand the variation in pollination benefits to crop yield, as well as to anticipate changes in this service, develop predictions, and...
Meeting Paris agreement objectives will temper seabird winter distribution shifts in the North Atlantic OceanNARA Subscribed
We explored the implications of reaching the Paris Agreement Objective of limiting global warming to Alle alle , Fratercula arctica , Uria aalge , Uria lomvia and Rissa tridactyla ) using tracking data for ~1500 individuals through resource selection functions based on mechanistic modeling of seabird energy requirements, and a dynamic bioclimate envelope model of seabird prey. Future winter distributions were predicted to shif...
The timing of annual events such as reproduction is a critical component of how free‐living organisms respond to ongoing climate change. This may be especially true in the Arctic, which is disproportionally impacted by climate warming. Here, we show that Arctic seabirds responded to climate change by moving the start of their reproduction earlier, coincident with an advancing onset of spring and that their response is phylogen...
Global warming is a nonlinear process, and temperature may increase in a stepwise manner. Periods of abrupt warming can trigger persistent changes in the state of ecosystems, also called regime shifts. The responses of organisms to abrupt warming and associated regime shifts can be unlike responses to periods of slow or moderate change. Understanding of nonlinearity in the biological responses to climate warming is needed to a...
Flavobacterium psychrophilum causes rainbow trout fry syndrome (RTFS) and cold water disease (CWD) in salmonid aquaculture. We report characterization of F. psychrophilum strains and their bacteriophages isolated in Chilean salmonid aquaculture. Results suggest that under laboratory conditions phages can decrease mortality of salmonids from infection by their F. psychrophilum host strain. Twelve F. psychrophilum isolates were...
The effect of two disinfectants on eggs and larvae of Baltic cod, Gadus morhua , was investigated. The eggs were disinfected for 10 min using various concentrations of either glutaraldehyde (100, 200, 400, 600 and 800 mg L −1 ) or iodophor (10, 50, 100 and 150 mg L −1 ), 1–4‐days post‐fertilization. Bactericidal effect of disinfection, survival to hatching, hatching success and larval abnormalities were assessed. Larval surviv...
Water recirculation and good management: potential methods to avoid disease outbreaks with Flavobacterium psychrophilumNARA Subscribed
Flavobacterium psychrophilum infections cause high mortality among rainbow trout, Oncorhynchus mykiss , fry in Danish fish farms and hatcheries. Hatcheries based entirely on bore‐hole water recirculation systems have been suggested as a possibility for eliminating F. psychrophilum or at least keeping the amount of this bacterium low. The occurrence of the bacterium in a bore‐hole water recirculation system was compared with a...
The occurrence of Flavobacterium psychrophilum at four rainbow trout hatcheries was investigated to provide more knowledge about the reservoirs and transmission of this bacterium. Broodstock were sampled at stripping (including both unfertilized and fertilized eggs), and the offspring were then sampled at the eyed egg and fry stages. Water and surface samples (e.g. hatchery trays) were also sampled. Flavobacterium psychrophilu...
Phenotypic and genotypic characterization of Flavobacterium psychrophilum from Finnish fish farmsNARA Subscribed
Finnish isolates ( n =37) of Flavobacterium psychrophilum isolated from farmed salmonids were studied using phenotypic and genotypic characteristics. The characteristics of isolates were compared with the characteristics of Swedish and Estonian F. psychrophilum isolates and the type strain, F. psychrophilum NCIMB 1947 T . Multiple isolates from eight disease outbreaks were examined to determine differences between isolates fro...
Bacterial pathogens in rainbow trout, Oncorhynchus mykiss (Walbaum), reared at Danish freshwater farmsNARA Subscribed
During a 2‐year period, bacterial fish pathogens were monitored on five rainbow trout, Oncorhynchus mykiss (Walbaum), freshwater farms in Denmark. A total of 1206 fish were examined and 361 bacterial isolates were identified phenotypically. Enteric redmouth disease, furunculosis and rainbow trout fry syndrome/coldwater disease were recorded. Infections caused by Flavobacterium psychrophilum occurred most frequently, but only o...
Comparative studies of Danish Flavobacterium psychrophilum isolates: ribotypes, plasmid profiles, serotypes and virulenceNARA Subscribed
Ribotyping and plasmid profiling were carried out on 299 Danish Flavobacterium psychrophilum isolates from farmed rainbow trout, Oncorhynchus mykiss (Walbaum). The isolates had been characterized biochemically and serologically in another study. The isolates were very homogeneous, 254 isolates had the same ribotype A (restriction enzyme Eco RI) and 284 isolates harboured one 3.3 kb plasmid. Seventy‐five per cent of the F. psyc...
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