Project number: 1983-055
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Richard Slack-Smith
Organisation: Department of Industry Tourism and Trade
Project start/end date: 28 Dec 1984 - 31 Dec 1984
Contact:
FRDC

Objectives

1. Sample up to 1000 sharks of various spp for total mercury content
determine alkyl mercury levels in approximately 150.
2. Examine effects of sex, length, locality on levels. What implications for future of this shark fishery?
3. Sample up to 200 sharks for selenium content

Final report

Author: Dr. J.M. Lyle
Final Report • 1984-12-31 • 1.86 MB
1983-055-DLD.pdf

Summary

Total mercury, alkyl mercury and selenium concentrations in the muscle tissue of several species of pelagic sharks from northern Australian waters are reported. Mean mercury concentrations ranged between O .13 mg /kg for Carcharhinus brevipinna and 1. 94 mg/kg for C. amblyrhyn choides. Maximum values exceeded 1.5 mg/kg in nine of the species studied and the highest recorded concentration was 3.7 mg/kg for Sphyrna mokarran.

Mercury concentrations were highly dependent on the size of shark, a relationship that was adequately represented by the power function. Males of most of the species studied had significantly higher levels of mercury than females of similar size.

Related research

Industry
PROJECT NUMBER • 2020-067
PROJECT STATUS:
CURRENT

SeSAFE – Delivering Industry Safety through Electronic Learning

1. INFORM, via an independent review, the design and application of user-pay funding models in Australian primary industries, the potential for a similar model to be introduced by SeSAFE in the fishing and aquaculture industry, and steps recommended to realise this outcome.
ORGANISATION:
Smart Fishing Consulting
Environment
Industry