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Apparent vascular hypertension associated with Amoebic Gill Disease affected Atlantic salmon (Salmo salar) in Tasmania

journal contribution
posted on 2023-05-16, 13:29 authored by Powell, MD, Forster, ME, Barbara NowakBarbara Nowak
The dorsal aortic (DAP), ventral aortic (VAP) blood pressures and heart rate were measured in Atlantic salmon affected with AGD in a clinical outbreak. DAP and VAP were high compared with published values for other salmonid species. Fish subjected to a 3-h freshwater bath and returned to seawater (the treatment of choice for AGD control) had a significantly lower dorsal aortic pressure, with values comparable to those for other salmonids. Heart rate was not affected by freshwater exposure. These data suggest that there may be a vascular hypertension associated with AGD in Atlantic salmon. Although the source of the hypertension remains to be identified, this finding may help to explain the poor post-stress survival of AGD-affected salmon.

History

Publication title

Bulletin of the European Association of Fish Pathologists

Volume

22

Issue

5

Pagination

328-333

ISSN

0108-0288

Department/School

Institute for Marine and Antarctic Studies

Publisher

European Association of Fish Pathologist

Place of publication

Scotland

Repository Status

  • Restricted

Socio-economic Objectives

Fisheries - aquaculture not elsewhere classified

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