Faculty of Natural Resources, PSU has learned about the death of farmed mussels in Tambon South Kantang, Amphoe Kangtang, Trang Province where there are 89 mussel farmers. The Faculty studied the cause of the death which had begun since August 18, 2009 and found that the area had increased the number of farmed mussels 2-3 times.
Crowdedness resulted in bad water circulation leading to smaller quantity of nutrients available for each mussel and sudden environmental changes. These, in turn, caused stress and eventually weakness in the mussels. When they died and decayed, the water condition deteriorated and bred more parasites and microbes, causing even more rapid and massive deaths.
Part of the changes has resulted from the decrease of water salinity due to heavy rains in the watersheds. Mussels died most on heavy rainy days beginning from the rafts 3 kilometers before the village. More of those at the top of the sacks died than those at the bottom because the changes at that level were more drastic, i.e., the salinity level changed more quickly than that at a deeper level. There were no reports about the death of white sea bass, however, because they could live in water with ranges of salinity level and so not affected. The rain wash also incurred various colored sediments, becoming a problem to mussels which feed by filtering though they have mechanisms to manage suspended sediments.
The study team has made suggestions to mussel farmers as follows. Mussel farming relies on natural settings so farmers should consider the capability of the system in catering for it. This means the management of natural environment to make it sustainable, balanced and undisturbed so as not to incur any phenomenon that has never occurred before. In this case, the farmers will have to reduce the number and the size of the mussel rafts as well as not to make the mussel sacks too overcrowded in each raft.
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences