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Fish Shellfish Immunol. 2004 Aug;17(2):129-35.

Seasonal variation of serum lysozyme levels in Atlantic halibut (Hippoglossus hippoglossus L.).

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  • 1FRS Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen AB11 9DB, Scotland, UK. t.j.bowden@marlab.ac.uk


Serum lysozyme was measured in Atlantic halibut (Hippoglossus hippoglossus L.) kept in a range of different conditions that included ambient photoperiod and temperature and controlled photoperiod and temperature. There was no significant difference between animals held in ambient conditions of 6 degrees C and those held in controlled conditions of 12 degrees C. Similarly, there was no significant difference between animals maintained in a long day photoperiod and those in a short day photoperiod. However, there was a significant difference between summer and winter readings. Whilst this would indicate a link between season and the defence system, there appears to be no link with apparent entrainment to different photoperiods and serum lysozyme levels.

[PubMed - indexed for MEDLINE]
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