PROJECT NUMBER
•
2002-014
PROJECT STATUS:
COMPLETED
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
SPECIES
165 results
PROJECT NUMBER
•
1996-275
PROJECT STATUS:
COMPLETED
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
The impact of changes in fishing patterns on red-legged banana prawns (Penaeus indicus) in the Joseph Bonaparte Gulf
Project number:
1995-016
Project Status:
Completed
Budget expenditure:
$85,164.00
Principal Investigator:
Neil Loneragan
Organisation:
CSIRO Oceans and Atmosphere Hobart
Project start/end date:
28 Jun 1995
-
30 Jun 1997
Contact:
FRDC
1. To contribute to maximise the economic yield of the red-legged banana prawn fishery in the Joseph Bonaparte Gulf by:
2. developing a model incorporating growth mortality and value at size parameters that can evaluate, under different fishing patterns, the economic returns to the fishery
3. evaluating the effects of different fishing patterns on the spawning capacity of the stock
Final report
Author:
Neil Loneragan and David Die
Final Report
•
1997-03-11
•
1.09 MB
1995-016-DLD.pdf
The fishery for red-legged banana prawns in the Joseph Bonaparte Gulf (JBG) developed in the early 1980s. Since then, fishing effort has varied from 700 to 2600 boat-days per year and catches range from 200 to 1000 tonnes per year. Initially the JBG fishery developed as an alternative to fishing in the Gulf of Carpentaria: during years of poor catches in the Gulf of Carpentaria, more fishing effort was applied in the JBG. In the early years most effort was concentrated at the end of the year. In recent years, however, in addition to being more heavily fished in years of poor catches elsewhere, JBG stocks are fished earlier in the season by a consistent number of boats, regardless of catches elsewhere in the NPF.
Although the red-legged banana prawn has been fished in the JBG since the early 1980s, we know little of its biology or population dynamics. Apart from a 12-month study by Northern Territory (NT) Fisheries in 1990, there has been no research on this species in Australia. The NT findings suggested that growth and mortality rates - important parameters for estimating the effects of changes in fishing effort on stocks - could not be estimated precisely by length frequency analysis of data from commercial catches. There was a need to develop a preliminary model for the red-legged banana prawn fishery in the JBG. This model would help to evaluate the impacts of changes in the pattern of fishing effort on the yield and spawning biomass of red-legged banana prawns. However, the estimates of growth and mortality used by the model would, unfortunately, be imprecise.
Therefore, a well-designed tag/release study would significantly improve the reliability of our estimates of growth and mortality for red-legged banana prawns in the JBG. However, prior to conducting a large-scale field tagging trial, the effect of tagging on the growth and mortality of red-legged banana prawns needed to be studied. For tag/release experiments to be successful, tagging should not affect the growth and survival of the prawns. An effective release-cage also needed to be designed for the deep waters of the JBG.
PROJECT NUMBER
•
2011-035
PROJECT STATUS:
COMPLETED
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
PROJECT NUMBER
•
2016-018
PROJECT STATUS:
COMPLETED
Determination of the spatial dynamics and movement rates of the principal target species within the Eastern Tuna and Billfish Fishery and connectivity with the broader western and central Pacific Ocean – beyond tagging
Accessing samples from broadbill swordfish from two sites within the WCPFC area was particularly problematic and was exacerbated by a poor fishing season in 2019. This resulted in samples for broadbill swordfish consisting of samples collected from the ETBF (2 years), Norfolk Island (1 year) and New...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
PROJECT NUMBER
•
2000-100
PROJECT STATUS:
COMPLETED
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
SPECIES
PROJECT NUMBER
•
2002-015
PROJECT STATUS:
COMPLETED
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
PROJECT NUMBER
•
1993-093
PROJECT STATUS:
COMPLETED
Development of biological tagging techniques for penaeid prawns
The objective of this project was to develop novel biological tags for penaeid prawns. The impetus for this research was the growing interest in Australia in the potential for stock-enhancement of penaeid fisheries with hatchery reared juveniles. In any stock- enhancement program some...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
PROJECT NUMBER
•
2009-024
PROJECT STATUS:
COMPLETED
Mapping the distribution and movement of gulper sharks, and developing a non-extractive monitoring technique, to mitigate the risk to the species within a multi-sector fishery region off southern and eastern Australia
This two year project provided the science to support the development of a management strategy for three gulper sharks species (genus Centrophorus) being assessed for threatened species listing. Their listing represented one of the most urgent environmental challenges to the South East Scalefish and...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
SPECIES
PROJECT NUMBER
•
2003-002
PROJECT STATUS:
COMPLETED
Spatial interactions among juvenile southern bluefin tuna at the global scale: a large scale archival tag experiment
Results have increased our confidence in the recruitment index based on the aerial survey in the Great Australian Bight (GAB) by confirming that the timing and duration are ideal, that the majority of juvenile SBT are likely to return to the GAB each summer, and that based on current evidence it is...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
SPECIES
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