103 results
Environment
PROJECT NUMBER • 2015-216
PROJECT STATUS:
COMPLETED

Informing inter-jurisdictional snapper management in eastern Australia

Snapper has been fished since the early development of the colony around Sydney Harbour in the late 18th century, but it was the arrival of steam power in the 1860’s that enabled fishers to start regularly targeting the abundant schools of snapper occurring in the deep-water fishing grounds...
ORGANISATION:
Department of Primary Industries (QLD)
SPECIES

Biology and harvest of tropical fishes in Queensland's Gulf of Carpentaria gillnet fisheries

Project number: 1992-145
Project Status:
Completed
Budget expenditure: $140,880.36
Principal Investigator: Rod Garrett
Organisation: Department of Primary Industries (QLD)
Project start/end date: 2 May 1993 - 27 May 1998
Contact:
FRDC

Objectives

1. To undertake over a two year period an investigation of age, sexuality, reproduction, stock structure, and seasonal abundance of key target species threadfin salmon (Polydactylus sheridani), grunter (Pomadasys kaakan) and jewfish (Johnnius diacanthus) from the Queensland inshore gillnet fishery in eastern Gulf of Carpentaria waters.
2. To determine and compare within this time frame the geographic differences in life cycle details for the species on the major fishing grounds along the Queensland Gulf coast.
3. To develop a protocol for the long term monitoring of catches and fishing effort for these species on the eastern Gulf coast fishing grounds.
4. To make this information available for consideration in the review of the current Gulf Fishery Management Plan.
Environment
Industry
PROJECT NUMBER • 2017-048
PROJECT STATUS:
COMPLETED

Improving mortality rate estimates for management of the Queensland Saucer Scallop fishery

This research was undertaken on the Queensland saucer scallop (Ylistrum balloti) fishery in southeast Queensland, which is an important component of the Queensland East Coast Otter Trawl Fishery (QECOTF). The research was undertaken by a collaborative team from the Queensland Department...
ORGANISATION:
Department of Primary Industries (QLD)
Environment
PROJECT NUMBER • 2018-047
PROJECT STATUS:
COMPLETED

Barramundi origins: determining the contribution of stocking to the Barramundi catch on Queensland's east coast

Researchers from Queensland’s Department of Agriculture and Fisheries, James Cook University, and the University of Western Australia tested a range of otolith-based and genetic methods to identify hatchery-born from wild-born Barramundi. The project took place in the Dry Tropics region, where...
ORGANISATION:
Department of Primary Industries (QLD)
SPECIES
Environment

Physical oceanographic influences on Queensland reef fish and scallops

Project number: 2013-020
Project Status:
Completed
Budget expenditure: $170,000.00
Principal Investigator: Tony J. Courtney
Organisation: Department of Primary Industries (QLD)
Project start/end date: 23 Jun 2013 - 29 Mar 2015
Contact:
FRDC

Need

There is a strong need for Queensland fishery managers to obtain a better understanding of key physical oceanographic influences on target species of commercial and recreational fisheries.

Tropical cyclones have been associated with reef fish catch rates. Coral trout (Plectropomus leopardus) catch rates typically fall after a major cyclone, while those of red throat emperor (Lethrinus miniatus) rise (see “Background” above). The effects on catchability can last several years. While the exact causal mechanism is not known, it is thought to be related to water temperature.

Nutrient-rich cold water eddies, which break from the East Australian Current and move westward onto the Queensland continental shelf are likely to affect the spat settlement, growth, abundance and catch rates of saucer scallop (Amusium balloti). Understanding these relationships may lead to improved management, assessment and forecasting of catch in these fisheries, and it may also lead to improved acceptance of quantitative stock assessment results by industry.

This proposal differs from previous abiotic studies because it focuses more on offshore, oceanic influences, rather than coastal rainfall and flow data.

Objectives

1. Review recent advances in the study of physical oceanographic influences on fisheries catch data, and describe the major physical oceanographic features that are likely to influence Queensland reef fish and saucer scallops.
2. Collate Queensland’s physical oceanographic data and fisheries (i.e., reef fish and saucer scallops) data.
3. Develop stochastic population models for reef fish and saucer scallops, which can link physical oceanographic features (e.g., sea surface temperature anomalies ) to catch rates, biological parameters (e.g., growth, reproduction, natural mortality) and ecological aspects (e.g. spatial distribution).
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