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

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

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.

Keywords: acclimation; environment; plasma; shark

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2008.02013.x

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

Publication date: October 1, 2008

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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