Population dynamics and stock structure of the red-throat emperor and other target species of the Queensland Tropical Reef Line Fishery (FRDC Project No. 98-131) (B4.3.1)
Task leader: Dr Campbell Davies, Australian Antartic Division.
Task associates:
Mr Russell Martin,Great Barrier Reef Marine Park Authority
Mr Duncan Souter, Queensland Seafood Industry Association.
This task extends the biological studies on the major target species
of the Reef Line Fishery, built on the logistic support provided by the
Effects of Line Fishing (ELF) Experiment. It includes age, growth and
reproduction studies on the red-throat emperor (Lethrinus miniatus),
maori wrasse (Chelinus undulatus), barramundi cod (Cromileptes
altivelis), and common and blue-spot coral trout (Plectropomus
leopardus and P.laevis). The task also involves the application
of genetic and microchemistry stock discrimination techniques to the question
of stock structure of L.miniatus within the GBR.
There are four main components to the project:
- Population dynamics of red-throat emperor, focusing on spatial variation
in population dynamics of red throat emperor.
- Stock structure of red throat emperor, including studies of genetic
and otolith microchemistry to investigate whether the observed regional
variation in population dynamics of red throat emperor is the result
of isolated stocks.
- Reproduction of primary target species of the reef line fishery, focussing
on the reproduction of common coral trout, red-throat emperor, blue
spot coral trout, maori wrasse and barramundi cod.
- Population biology of maori wrasse and barramundi cod, providing basic
information on the growth, longevity and reproduction of these species
.
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