Premium
Exposure to Increased Ambient Ultraviolet B Radiation has Negative Effects on Growth, Condition and Immune Function of Juvenile Atlantic Salmon ( Salmo salar )
Author(s) -
Jokinen Ilmari E.,
Markkula Eveliina S.,
Salo Harri M.,
Kuhn Penny,
Nikoskelainen Sami,
Arts Michael T.,
Browman Howard I.
Publication year - 2008
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.2008.00358.x
Subject(s) - salmo , immune system , juvenile , sunlight , zoology , chemistry , biology , fishery , fish <actinopterygii> , ecology , immunology , physics , astronomy
Atlantic salmon ( Salmo salar ) parr were exposed in two outdoor experiments, ranging in duration from 52 to 137 days, to spectral treatments: (1) natural sunlight (=present ambient UVB level), (2) solar radiation supplemented with enhanced UVB radiation from lamps simulating 20% or 8% stratospheric ozone loss or (3) UVB‐depleted sunlight achieved by screening with Mylar‐D film. The growth, condition and immune function of the salmon were quantified after treatments. Exposure to enhanced UVB radiation retarded growth, and decreased hematocrit value and plasma protein concentration. Further, enhanced UVB radiation affected plasma immunoglobulin concentration. The results demonstrate that juvenile Atlantic salmon are not able to fully adapt to increased ambient UVB levels in long‐term exposures, and the interference with immune system function suggests a negative effect of UVB on disease resistance in Atlantic salmon.