Effects of ultraviolet light on immune parameters of the roach.
Ultraviolet B radiation penetrates into water and can affect fish health and the immune system, as is the case with mammals. Teleost fish, the roach, were exposed to UVB irradiation in aquariums and a panel of immune parameters was determined. In addition to altered blood picture and respiratory burst by blood leukocytes, changes were noted also in major lymphatic organs. Respiratory burst and natural cytotoxicity activity of head kidney granulocytes and mitogen-activated proliferation of splenic lymphocytes were suppressed. Although mostly transitory, some parameters remained suppressed for the following 2 weeks. Ultraviolet A radiation had only minor effects. The stress induced by UVB may be involved in the modulation of immune parameters.
Jokinen
E I
EI
Department of Biological and Environmental Science, University of Jyväskylä, FIN-40351, Jyväskylä, Finland. eijokine@jyu.fi
Salo
H M
HM
Markkula
S E
SE
Aaltonen
T M
TM
Immonen
A K
AK
D000818:Animals; D005399:Fishes / Q000276:immunology; D006098:Granulocytes / Q000528:radiation effects; D006257:Head / Q000528:radiation effects; D006801:Humans; D007107:Immune System / Q000528:radiation effects*; D007668:Kidney / Q000528:radiation effects; D008214:Lymphocytes / Q000528:radiation effects; D016897:Respiratory Burst / Q000528:radiation effects; D014466:Ultraviolet Rays / Q000009:adverse effects*