Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Study targets queen of northern seas

18.01.2005


The secret life of one of northern Australia’s most popular sportfish, the spectacular queenfish, is being studied by CSIRO scientists for clues to its role and abundance in the marine ecosystem.




The year-long study, co-funded by the National Oceans Office, is collecting more than 30 specimens a month from the Gulf of Carpentaria near Weipa where queenfish are caught by recreational anglers and inshore net fisheries. Results of the study will improve the ability of fisheries managers to sustain queenfish populations into the future.

CSIRO marine biologist Dr Shane Griffiths says queenfish are a major predator of commercially important prawns in the Northern Prawn Fishery, particularly in the Weipa region. Despite their prominence in estuarine and nearshore food webs little is known about the life cycle of queenfish. "By examining the gonads of queenfish specimens we hope to determine when they spawn, their age at sexual maturity, and the number of eggs produced by mature females," Dr Griffiths says.


"The number of annual growth bands in their otoliths (earbones) will give us clues to their ages and growth rates." "This information will shed light on how the natural population fluctuates, and how they might respond to certain levels of fishing, either as a target or bycatch species."

Dave Donald of Dave Donald Sportfishing Charters at Weipa, says queenfish are favoured by anglers for their size, good looks and athleticism. "They grow to more than a metre in length and can weigh up to 16 kilograms," Mr Donald says. "They are bright silver and are strong fighters on a line, making spectacular jumps when hooked." "This important research will provide the first account of what make this species tick."

National Oceans Office planning manager, Rowan Wylie, says information gathered during the project will contribute to the Australian Government’s regional marine plan for northern waters between Torres Strait and the eastern Arafura Sea, including the Gulf of Carpentaria. "Sustainable management of our oceans relies on the best possible information and this project will provide answers on an important species that has received comparatively little scientific attention," Mr Wylie says.

The queenfish specimens are being collected and sent to the CSIRO Marine Laboratories in Brisbane with the help of Dave Donald Sportfishing Charters, Weipa Sportfishing Club and local commercial fishers.

This study is part of ongoing research in support of the Northern Prawn Fishery and its ecosystem, which has been the focus of CSIRO investigations in the region for more than 40 years.

Contact:
Dr Shane Griffiths, CSIRO Marine Research on 07 3826 7364 or shane.griffiths@csiro.au

Photos of queenfish are available from:
Bryony Bennett, CSIRO Marine Research Communication Group on 03 6232 5261 or bryony.bennett@csiro.au

Simon Moore | CSIRO Media
Further information:
http://www.csiro.au

More articles from Ecology, The Environment and Conservation:

nachricht Dry landscapes can increase disease transmission
20.06.2018 | Forschungsverbund Berlin e.V.

nachricht 100 % Organic Farming in Bhutan – a Realistic Target?
15.06.2018 | Humboldt-Universität zu Berlin

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>