Skip to main content

Free Content Scale-loss and Survival of Juvenile Yellowfin Bream, Acanthopagrus Australis, After Simulated Escape from a Nordmøre-Grid Guiding Panel and Release from Capture by Hook and Line

Download Article:
(PDF 183.8 kb)
Two laboratory experiments were done to assess the scale-loss and survival of juvenile yellowfin bream, Acanthopagrus australis after (1) simulated escape through the guiding panel of a Nordmore-grid and (2) release after capture by hook and line. In both experiments the total scale-loss on treatment fish was quite low (<3%). In experiment 1, yellowfin bream that were fatigued to exhaustion and forced to pass through a guiding panel showed significantly more scale-loss at, and posterior to, their area of maximum height than fish that were fatigued but did not pass through the guiding panel (60.5% to 80% difference in means). In experiment 2, fish that were hooked and then released lost significantly more scales across their entire body than did control fish (79% to 87% difference in means). There were negligible mortalities over the duration of experiment 1 (30 days). In experiment 2, all fish in four treatment tanks (40 fish) and one control tank (10 fish) died due to hyperplasia and fusion of gill filaments caused by copepods and protozoan parasites. The results are discussed in terms of the likely stresses incurred by fish due to the fishing gears tested in each experiment and the aquarium systems used.

10 References.

No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 March 1999

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • 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
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