76 results
Environment
PROJECT NUMBER • 1991-032
PROJECT STATUS:
COMPLETED

A comparison of otolith microchemistry and genetic techniques for evaluation of stock structure of the jackass morwong Nemadactylus macropterus

Four different techniques for determining the stock structure of a marine fish species were compared, using as a subject the jackass morwong. The four techniques examined were allozyme analysis, mitochondrial DNA analysis and two techniques based on measuring the composition of otoliths ('ear...
ORGANISATION:
CSIRO Oceans and Atmosphere Cleveland
Environment
Environment
Industry
Environment
Environment
PROJECT NUMBER • 1990-009
PROJECT STATUS:
COMPLETED

Development and use of the egg production method to assess the biomass of orange roughy off eastern Tas

Orange roughy is one of Australia's most valuable finfish However, its aggregating behaviour during spawning, slow growth, and longevity render it vulnerable to over-exploitation. Some stocks in New Zealand are at extremely low levels after only ten years of exploitation. Good management is vital...
ORGANISATION:
CSIRO Oceans and Atmosphere Cleveland
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