Skip to main content

Measurement of blood volume in the elasmobranch fish Scyliorhinus canicula following acute and long-term salinity transfers

Buy Article:

$43.00 plus tax (Refund Policy)

A technique using 51chromium-labelled erythrocytes was used to measure blood volume in Scyliorhinus canicula following long-term and acute salinity transfers. Basal whole-blood volume was 5·6 ± 0·2 ml 100 g−1 (mean ±s.e.), this increased (6·3 ± 0·2 ml 100 g−1) following +14 day acclimation to 80% sea water (SW) and decreased (4·6 ± 0·2 ml 100 g−1) following acclimation to 120% SW. These changes were shown to be primarily due to changes in plasma volume, with no significant changes in extrapolated red-cell volume being demonstrated. Blood volume was also measured in the same animals during 10 h acute transfer to 100% SW. Plasma volume in S. canicula during acclimation from 80% SW was significantly reduced (4·5 ± 0·3 ml 100 g−1) after 6 h of transfer to 100% SW. Blood volume in animals during acclimation from 120% SW was significantly increased (4·8 ± 0·2 ml 100 g−1) after 4 h of acute transfer. The osmoregulatory implications of these different timeframes during hyposaline and hypersaline transfer are discussed, along with the importance of this in vivo technique as context for in vitro studies with haemo-dynamic stimuli.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Keywords: acclimation; environment; plasma; shark

Document Type: Regular Paper

Affiliations: School of Biology, Gatty Marine Laboratory, University of St Andrews, St Andrews, Fife KY16 8LB, Scotland, U.K.

Publication date: 2008-10-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more