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PT Molajaya Samudera Crew Management is a recruitment and placement company located in Jakarta and Bali, Indonesia.

We have been doing recruitment and placement of highly qualified and experienced Indonesian crew, fishing crew & seafood processor for working on fishing vessel and seafood processing plant in Asia, Australia and Europe for more than 26 years.

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Revolutionary fish ageing method developed


Two otoliths from a Pacific cod, Gadus macrocephalus. (Photo Credit: Edgewise /CC BY-SA 3.0)

Click on the flag for more information about AustraliaAUSTRALIA
Friday, June 19, 2015, 22:40 (GMT + 9)
Australian fisheries scientists have recently completed a world-first research project that will help to rapidly estimate the age of fish.

Dr Julie Robins, Senior Fisheries Biologist with the Queensland Department of Agriculture and Fisheries (DAF) said estimating the age of fish was important as it contributes to determining if a fish stock is sustainably fished.

"The research has found that near infrared (NIR) spectra collected from fish ear bones (known as otoliths) has the potential to estimate the age of fish," Dr Robins said.

"Over 60,000 otoliths are collected and processed each year in Australia and this research will potentially provide significant cost savings to fish ageing programmes." Robins pointed out.

The researcher added that it will make the age-identification process much more efficient and cost-effective by reducing the time and resources required to determine the age of fish.

DAF Principal Scientist, Brett Wedding said traditional methods are labour-intensive whereas NIRS technology, which has been used for decades in many agricultural situations, relies on using a spectrophotometer.

"NIRS technology offers a rapid and cost-effective method of predicting  properties of interest such as moisture in wheat, oil content in sandalwood, ripeness or quality in fruit," he said.

"We found that NIR spectroscopy instruments could be readily configured to capture the NIR spectra of whole dry fish otoliths," he stressed.

"One of the most interesting results of the project was the potential for NIRS to discriminate between otoliths collected from different locations. This would be particularly useful determining where fish come from," he added.

The two and half year study was funded collaboratively by the Fisheries Research and Development Corporation and the State Governments of Queensland, Northern Territory, South Australia and Western Australia. Further research is currently under consideration.
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