IN BRIEF - Cooke Aquaculture collaborating on study to track sulphide levels on seabed near salmon farms
Tuesday, June 25, 2019
The consortium – led by Cooke Aquaculture and the Scottish Association for Marine Science (SAMS) with funding from the Scottish Aquaculture Innovation Centre (SAIC) – is exploring how measuring sulphides on the seabed could better track the impact of biomass from fish farms at six sites in Scotland and Canada, the SAIC wrote in a press release on Monday.
The study will be supported by Nova Scotia-based Dalhousie University, the University of the Highlands and Islands (UHI) and Fisheries and Oceans Canada (DFO) and the new approach is expected to monitor the impact of fish farms more quickly, accurately, and cost-effectively. The consortium is also consulting the Scottish Environment Protection Agency (SEPA).
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Kolkata - West Bengal Housing and Infrastructure Development Corporation (Hidco) will start a campaign from next Saturday to dissuade people from eating khoka or small Ilish (hilsa) and urge them to eat the large variety.
The Ilish festival will be observed from July 20 at Café Ekante in Eco Park and the Biswa Bangla Gate where the Hidco authorities will campaign with the slogan Eat Large, Save Small" to ensure that the Hilsa fish are allowed to grow to full size.
Fisherfolk in Ras Al Khaimah will now know if the fish they caught must be returned into the water - thanks to a new smart app that can detect 21 types of banned fish.
Launched by the Ras Al Khaimah Fishermen Society recently, the app is called 'Augmented Reality Measurement' and it can be easily downloaded on mobile phones and other smart devices.
"It runs even without an Internet connection, so fishermen can use it while they are out in the sea. It helps fishermen measure their catch and put the banned fish they caught back into the water," said Humaid Al Zaabi, deputy chairman of the society.
The country has doubled its fish stocks since the launch of the Kenya Coast Services Guards six months ago, reports show.
According to records in Liwatoni, Mombasa County, the stock has increased by 155,000 tonnes after the KCGS and international security teams stopped illegal fishing vessels from operating in Kenyan waters.
More than 400,000 tonnes of fish have landed at Liwatoni Fisheries Complex since the facility was reopened and KCSG launched in November.
MANGALURU - Climate change, especially reduced rainfall can have adverse impact on fish and fisheries. Lack of rainfall accompanied with high temperatures would be extremely detrimental to several fish species as it affects the primary productivity, thereby impacting the entire life cycle of the fish and fisheries, observed Dr A Senthil Vel, Professor and Dean, College of Fisheries and Dr Lakshmipathi, Professor, Department of Aquatic Environment Management.
WASHINGTON - Five hundred species of fish change sex in adulthood, often in response to environmental cues, researchers have found.
"I've followed the bluehead wrasse for years because sex change is so quick and is triggered by a visual cue. How sex can reverse so spectacularly has been a mystery for decades. The genes haven''t changed. So it must be the signals that turn them off and on," said Prof Jenny Graves, one of the researchers of the study.
Bluehead wrasses live in groups, on coral reefs of the Caribbean. A dominant male with a blue head protects a harem of yellow females. If the male is removed, the biggest female becomes male in just 10 days. She changes her behavior in minutes and her color in hours. Her ovary becomes a testis and by 10 days it is making sperm.
New tracking devices inserted into Atlantic salmon reveal that up to 48 per cent of the critically endangered fish are being eaten while leaving Nova Scotia's Stewiacke River on their ocean migration.
The insight is the result of acoustic tags that can tell when a tagged fish has been eaten.
"It certainly is high, and it's somewhat higher than some work that was done by some colleagues of mine about 10 years ago using similar tags, but without the predation detecting capability," says David Hardie, a marine biologist with the Department of Fisheries and Oceans.
Seafood industry seeks answers on post-Brexit trade United Kingdom
Leaders of Scotland's seafood industry have told UK environment and food secretary Michael Gove more has to be done to safeguard exports after Brexit.
At a meeting in London, representatives of salmo...