Effect of UV-B radiation on the antibody response of fish – Implication on high altitude fish culture

Transcriptional changes in the gilthead seabream (Sparus aurata) skin in response to ultraviolet B radiation exposure

“…Thus, UVB exposure may decrease the efficiency of immunological responses to pathogens. Consequently, an increase in microbial load can lead to a higher susceptibility to severe infections (Cramp et al, 2014;Markkula et al, 2007;Subramani et al, 2015). We have no direct evidence of these B-and T-immunosuppressive cells in the skin of UVB-exposed fish; however, genes involved in B-and T-cells differentiation, migration, and activation were overrepresented in the UVB fish (rhoh, zap70, syk, grap2a, il2rga), as evidenced by GO enrichment and PPI analyses.…”

Exposure to natural ultraviolet B radiation levels has adverse effects on growth, behavior, physiology, and innate immune response in juvenile European seabass (Dicentrarchus labrax)

“…In farmed rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar), the development of skin lesions such as sunburn was linked with the high mortality rates observed in several fish farms (Bullock 1988(Bullock , 1985Bullock and Coutts 1985). However, even when overexposure to UVR is not lethal to some fish species, their immunological defenses can be compromised by decreasing their resistance to bacterial, parasitic, or fungal infections, thus resulting in higher susceptibility to diseases (Fabacher and Little 1995;Ghanizadeh Kazerouni et al 2017;Subramani et al 2015). Reduced growth, increased development abnormality rates, the occurrence of severe sunburn and skin lesions, and increased mortality as a result of overexposure to UVB have been demonstrated in several fish species, including yellow perch (Perca flavescens), Atlantic cod (Gadus morhua), common sole (Solea solea), Atlantic salmon, and rain bow trout Boily et al 2011;Bullock and Coutts 1985;Fukunishi et al 2012;Huff et al 2004;Jokinen et al 2011;McFadzen et al 2000).…”

Adverse Effects of Ultraviolet Radiation on Growth, Behavior, Skin Condition, Physiology, and Immune Function in Gilthead Seabream (Sparus aurata)

“…UVB exposure induces immunosuppression in rainbow trout (Oncorhynchus mykiss) and Mozambique tilapia (Oreochromis mossambicus), thus decreasing their resistance to infection by opportunistic agents like bacteria and parasites. Increased mortality observed in these two species most probably resulted because of the high incidence of infections (Markkula et al, 2007;Subramani et al, 2015). Losses in the production of farmed Atlantic salmon and rainbow trout exposed to ambient UVR has been reported, in which fish showed severe dorsal skin lesions (Bullock, 1988).…”