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Fish

Science & Technology - Briefs

Issue Date: Aug 15, 2009
health The Wnt pathway

According to report

Issue Date: Apr 30, 2009
Birds no more: Eight bird species have vanished from the 25 sq km Salim Ali sanctuary in Ernakulam district, Kerala, said a study by Nirmala College in Ernakulam. Changes in their environment, teak plantations for example, may have caused this. The study also recorded the number of bird species increased from 132 in the 1930s to 238 in the sanctuary. This included wetland species that increased from 10 to 32, possibly because of a new reservoir there.

In Court

Issue Date: Feb 28, 2009
Indicted for killing fish: Thames Water, the largest water and wastewater services company in the UK, was recently ordered to pay US $180,643 by a UK court for accidentally releasing sodium hydroxide into the Wandle river in south west London in September, 2007. It turned the river milky and more than two tonnes of dead fish were found floating amidst a strong smell of bleach along a five-kilometre stretch,

Mahseer in danger

Issue Date: Oct 15, 2008
illegal sand extraction upstream of Cauvery has put the Deccan mahseer in danger. "We have not caught a mahseer that weighs more than 10 kg in Shivasamudram (in Karnataka) in the past 10 years,'' says Prathap Ruthnaswamy of Wildlife Association of South India (wasi). The association manages fishing in the Shivasamudram dam and its canals.

Tilapia fish may have killed gharials in Chambal

Author(s): Kirtiman Awasthi
Issue Date: Apr 15, 2008
scientists seem to have come to a conclusion on what could have killed more than 100 gharials in Chambal waters recently. Tilapia, an invasive fish could have caused the deaths along the Uttar Pradesh-Madhya Pradesh border, says a new report.

Bytes

Issue Date: Oct 15, 2007
non-stick gum: New easy-to-remove chewing gum is ready. Initial experiments show that the gum degrades naturally in water. The new gum adds a special polymer to modify its formulation, which alters the interfacial properties of the discarded gum cuds, making them less adhesive. The new gum is result of polymer research at England's University of Bristol. Revolymer, a company associated with the university, will commercially launch the product next year.

In short

Issue Date: Jul 15, 2007
waste proposal: Argentina will use alternatives to waste incineration. A government plan calls for a ban over incineration as a treatment and disposal technology, including use of waste as input to produce energy." Waste incineration emits toxics like dioxins and furans. Argentina has several incinerators of industrial, medical and urban waste under operation.

Fish at risk

Author(s): Biplab Das
Issue Date: May 31, 2007
Arsenic disturbs magar's immune system Long-term exposure to arsenic could weaken magur fish's ability to fight infection, say researchers at Visva Bharati University, Santinekatan. The team found that arsenic affects head kidney cells--responsible for generating immune responses and battling out germs. "The effects of arsenic on cells suppressed proliferation of immune cells and led to the significant reduction of antibody levels in the fish's blood," says Shibnath Majumder, the lead researcher.

PacifiCorp Energy flays study on salmon migration

Issue Date: Apr 15, 2007
PacifiCorp Energy, a power company operating in northwest us, has criticised a recent government study that claimed it would be cheaper to remove barriers blocking the migration of endangered salmon than to keep them.
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