This paper describes a study of the risk factors associated with disease outbreaks in fish species of fish farms and rivers of north-east Spain. We focused our work on the isolation of fish pathogens (bacteria, virus), the water quality (physicochemical and microbiological quality) and management characteristics. We have observed 2 important viral diseases, infectious pancreatic necrosis and sp...

Although increased disease severity driven by intensive farming practices is problematic in food production, the role of evolutionary change in disease is not well understood in these environments. Experiments on parasite evolution are traditionally conducted using laboratory models, often unrelated to economically important systems. We compared how the virulence, growth and competitive ability...

. Fish are thought to settle and recruit shellfish seaweed farms; however, there is little published evidence support this assumption. Shellfish farms increase structural complexity epibiota productivity, which may attract settling fish larvae. In study, settlement recruitment patterns into 2 aquaculture habitats, mussel-kelp co-culture mussel farm monoculture, were compared adjacent natural so...

Sea lice are marine ectoparasitic crustacea which limit the potential for sustainable salmon aquaculture due to risks of impacts on iconic wild and sea trout. Control parasite farms costs an estimated 9% farm revenue. develop through planktonic nauplii copepodid stages attach to, mature on, salmonid hosts until females become ovigerous (egg laying) Impacts fish depend their exposure larval tran...

Ornamental fish ponds requires continuous control of water quality such as salt content (salinity), hardness (Ca, Mg), and ionic contents particularly nitrate and ammonium. Conductivity is considered as a parameter correlates with these parameters and sensitive to environmental conditions such as temperature. Therefore, a conductivity detector can be employed for control of water quality in aqu...

Salmon pancreas disease virus, often referred to as salmonid alphavirus (SAV), causes pancreas disease (PD) in European salmonids. SAV transmits horizontally from fish shedding virus into the water and ocean currents are believed to be a main contributor of viral spread between marine farms. Vaccination against PD is previously shown to reduce mortality and severity of clinical PD. In this stud...

The prevalence of Pseudomonas species in freshwater fish and water from aquaculture farms Turkey was determined on a monthly basis, the period covering 2013–2017 two seasons 2018. included study were located six different regions Turkey. A total 90 strains isolated diseased healthy fish, classified under 20 species. phenotypic characterization based oxidase catalase activities, haemolysis, tole...

Artificial structures can be considered as high spatially structured habitats in the marine pelagic system, where patch connectivity would strongly dependent on exchange of larvae or dispersing individuals. Fish-farms located offshore may alter ecological connectivity, modifying trophic resources, and species dispersal among patches. High population densities invertebrates found associated with...

A multiplex (m-)PCR-based protocol was designed for the simultaneous detection of the main marine bacterial pathogens in Chilean salmon farms: Streptococcus phocae, Aeromonas salmonicida, Vibrio anguillarum and Piscirickettsia salmonis. Each of the 4 oligonucleotide primer pairs exclusively amplified the target gene of the specific bacterial pathogen. The detection limit of the m-PCR using puri...