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The fishery for red spot king prawns (Penaeus longistylus) off the central Queensland coast

Project number: 1984-020
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Mike Dredge
Organisation: Department of Primary Industries (QLD)
Project start/end date: 28 Dec 1987 - 31 Dec 1987
Contact:
FRDC

Objectives

1. Study the distribution, growth and reproductive cycle of the red-spot king prawn through all post-larval stages.
2. Collect landing statistics and catch per unit effort data.

Final report

Author: M.C.L Dredge
Final Report • 1987-12-31 • 4.23 MB
1984-020-DLD.pdf

Summary

The fishery for king prawns which occurs between 18°S and 21°S has been investigated over a three year period. The fishery takes place predominantly during winter months. Availability of alternative target stocks as well as recruitment timing is responsible for the fishery's timing.

Annual catch has increased to about 2000 tonnes in 1987, from an annual catch of about 700 tonnes in 1984. This has been brought about by increased effort in the fishery, as the average annual catch rate has remained steady.

About 70% of the catch is red spot king prawn, Penaeus longistylus. The remainder is blueleg king, P. latisulcatus. Redspot kings recruit onto the main fishing grounds in the Great Barrier Reef lagoon over an extended period, whereas blueleg kings recruit over a comparatively short period.

Blueleg king prawns follow a conventional penaeid life cycle. Juveniles use coastal flats as nursery areas and move to deeper water as they mature. Red spot kings are unique in that they use coral reef lagoons as nursey areas. The species' biology is attuned to the coral reef environment.

Tagging studies conducted on red spot king prawns showed that adults were sedentary. Estimates of growth parameters and natural mortality obtained from tagging data are sufficient to use in a basic yield model.

Environment
PROJECT NUMBER • 1983-032
PROJECT STATUS:
COMPLETED

Port Phillip Bay and Bass Strait scallop research

During the 3 years of the study, scallop spatfall was observed to occur over a short period (October-December) after the scallops had spawned in spring. Growth was rapid and scallops reached an acceptable harvestable size of 70mm within 16 months. Spatfall one year can therefore be related to...
ORGANISATION:
Agriculture Victoria
Industry
PROJECT NUMBER • 2022-137
PROJECT STATUS:
COMPLETED

Ensuring market-focused value adding capabilities are available to SA Seafood companies today and through to 2030

Context Fresh premium seafood has long been the best pathway to a viable consumer. That remains true for premium SA wildcatch species (e.g., rock lobster, prawn, abalone) that are, and will continue to be, prosperous. But processing and value adding have never been more critical to attract retail...
ORGANISATION:
Ridge Partners
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