Hypertension in Pagothenia borchgrevinki caused by X-cell disease

Davison, W. and Franklin, C. E. (2003) Hypertension in Pagothenia borchgrevinki caused by X-cell disease. Journal of Fish Biology, 63 1: 129-136. doi:10.1046/j.1095-8649.2003.00135.x


Author Davison, W.
Franklin, C. E.
Title Hypertension in Pagothenia borchgrevinki caused by X-cell disease
Journal name Journal of Fish Biology   Check publisher's open access policy
ISSN 0022-1112
Publication date 2003-07-01
Sub-type Article (original research)
DOI 10.1046/j.1095-8649.2003.00135.x
Volume 63
Issue 1
Start page 129
End page 136
Total pages 8
Place of publication Oxford
Publisher Blackwell Publishing Ltd
Language eng
Subject C1
270604 Comparative Physiology
780105 Biological sciences
Abstract Approximately 15% of a population of the cryopelagic nototheniid fish Pagothenia borchgrevinki, found constantly swimming immediately beneath the annual fast ice, in McMudro Sound. Ross Sea, Antarctica, was affected by X-cell gill disease. This disease affected blood flow through the gill lamellae, and this in turn affected oxygen uptake. Exercise caused increases in heart rate and ventral aortic blood pressure. Heart rate increased from 15.1 +/- 1.55 to 23.1 +/- 0.93 beats min(-1) in healthy fish, with a similar increase from 15.1 +/- 1.55 to 23.1 +/- 0.93 beats min(-1) in healthy fish, with a similar increase (to 24.6 +/- 0.26 beats min(-1)) in X-cell-affected animals. In healthy fish, pressures rose with exercise (from 2.72 +/- 0.11 to 3.75 +/- 0.19 kPa) and then rapidly returned to resting levels during recovery. In X-cell fish pressures rose during exercise, but then continued to rise, to reach a high of 4.18 +/- 0.13 kPa, close to the predicted maximum pressure able to be generated by these hearts. Recovery was rapid in healthy fish, but was prolonged in diseased animals. As they are constantly swimming, there is the potential that X-cell-affected fish suffer from chronic hypertension. (C) 2003 The Fisheries Society of the British Isles.
Keyword Marine & Freshwater Biology
Antarctic
Blood Pressure
Cardiovascular
Exercise
Hypertension
X-cell
Blooded Antarctic Fishes
Gill Disease
Teleost
Tumors
Q-Index Code C1
Additional Notes DOI: 10.1046/j.1095-8649.2003.00135.x

 
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Created: Wed, 15 Aug 2007, 12:10:56 EST