Diseases of dab (Limanda limanda): Analysis and assessment of data on externally visible diseases, macroscopic liver neoplasms and liver histopathology in the North Sea, Baltic Sea and off Iceland

Marine Environmental Research
T LangW Wosniok

Abstract

In the framework of the ICON project (Integrated Assessment of Contaminant Impacts on the North Sea), common dab (Limanda limanda) from seven offshore sampling areas in the North Sea, Icelandic waters and the western Baltic Sea were examined in 2008 for the presence of externally visible diseases and parasites (EVD), macroscopic liver neoplasms (tumours) (MLN) and histopathological liver lesions (LH). Methodologies applied followed standardised ICES and BEQUALM protocols. The EDV results revealed pronounced spatial variation, with dab from the central and northern North Sea sampling areas showing the highest disease prevalence. MLN were recorded only in North Sea dab from the German Bight, Firth of Forth and Ekofisk at a low prevalence. LH results revealed a dominant prevalence of non-specific, mostly inflammatory, lesions and a low prevalence of early toxicopathic non-neoplastic lesions, tumour pre-stages (foci of cellular alteration) and liver tumours. For the analysis and assessment of spatial variation of EVD, a Fish Disease Index (FDI) was calculated for individual dab, summarising data on the presence/absence of EDV, their severity grades, effects on the host and compensating for effects of length, sex and season. FDI dat...Continue Reading

References

Nov 28, 2015·Marine Environmental Research·Ketil HyllandMatthew J Gubbins
Mar 14, 2016·Marine Environmental Research·U KammannK Hylland
Nov 27, 2016·Marine Environmental Research·Sturve JoachimCarney Almroth Bethanie

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Citations

Nov 28, 2015·Marine Environmental Research·Ketil HyllandMatthew J Gubbins
Nov 27, 2016·Marine Environmental Research·Sturve JoachimCarney Almroth Bethanie
Mar 12, 2019·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Jamie L RothenburgerClaire M Jardine
Oct 13, 2021·Environmental Science and Pollution Research International·Cobus van DykIrene Barnhoorn

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