File(s) not publicly available
Assessment of the physiological effect of altered salinity on greenlip (Haliotis laevigata) and blacklip (Haliotis rubra) abalone using respirometry
journal contribution
posted on 2023-05-16, 14:20 authored by Edwards, SJThe early physiological response (3 days) of greenlip (Haliotis laevigata Leach) and blacklip (H. rubra Leach) abalone to a single abrupt change in salinity was monitored using a multi-channel open-circuit respirometer. The range of salinity tolerance for both species in this trial was 25-40 ppt. Indications from other trials were that a margin of 2 ppt outside this range will cause mortality. Serum volume was increased by reduced salinity as much as 25% in the short term, with equilibration of the concomitant whole body weight increase (9.2±0.5%) occurring within 1h. The serum volume appeared to be decreased at high salinity. There was little underlying change in basal oxygen usage levels, but significant behavioural changes that affected overall oxygen consumption. Both high and low salinity appeared to reduce activity. Animals in low salinity exhibit partial recovery of activity levels after 1 day in a manner similar to other stress responses. Animals at high salinity (40 ppt) did not show recovery of activity levels over 3 days. Overall, these results suggest that greenlip and blacklip abalone will have little trouble tolerating moderately low-salinity environments.
History
Publication title
Aquaculture ResearchVolume
34Issue
14Pagination
1361-1365ISSN
1355-557XDepartment/School
School of Health SciencesPublisher
Blackwell Publishing LtdPlace of publication
Oxford, EnglandRepository Status
- Restricted