First published online February 13, 2009
Journal of Experimental Biology 212, 656-661 (2009)
Published by The Company of Biologists 2009
doi: 10.1242/jeb.024000
Continuous light affects mineralization and delays osteoid incorporation in vertebral bone of Atlantic salmon (Salmo salar L.)
Anna Wargelius*,
Per Gunnar Fjelldal,
Ulla Nordgarden and
Tom Hansen
Institute of Marine Research, Bergen, Norway

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Fig. 1. The effect of different light regimes on the yield-load (A;
N=6–13), col I expression (B; N=6) and
shh expression (C; N=6). White bars, natural light; black
bars, continuous light. Values are means ± standard error of mean
(± s.e.m.). Significant differences are indicated by different lower
case letters above the bars.
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Fig. 2. The effect of different light regimes on the vertebral stiffness (g
mm–1; A; N=6–12), alp expression (B;
N=6), total mineral increase per day (mg; C; N=3) and
mgp expression (D; N=6). White bars, natural light; black
bars, continuous light. Values are means ± standard error of mean
(± s.e.m.). Significant differences are indicated by different lower
case letters above the bars.
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© The Company of Biologists Ltd 2009