The busier the neighbourhood, the bigger the brain - at least for pumpkinseed sunfish, according to a pioneering study by University of Guelph biologists.
Brains of sunfish living in more complex shoreline habitats are larger than those of their counterparts in simpler open water, according to the study published recently in Proceedings of the Royal Society B.
This is the first known study to connect habitat with varying brain size in a single lake fish population, said lead author PhD student Caleb Axelrod, adding that the finding may provide clues about how fish and other creatures will respond to mounting environmental stressors from pollution to climate change.
The U.S. shrimp industry is pointing to the rising number of foreign aquaculture importers and the annual rejections of shrimp shipments due to unsafe antibiotics in marking Nov. 12-18 as the World Antibiotic Awareness Week.
PORTLAND, Maine - Fishing managers will decide this week if New England’s fishery for shrimp must remain closed because of concerns about the environment and the animal’s population.
The shrimp fishery, based mostly in Maine, has been closed since 2013. The small, pink shrimp, once a popular winter seafood item, have been mostly unavailable to consumers in America since.
An advisory panel that reports to the Atlantic States Marine Fisheries Commission is meeting on Thursday to make a recommendation about having a season in 2019. The commission’s shrimp section is set to cast a vote on the subject on Friday. Both meetings are scheduled to take place in Portland.
A recent scientific analysis of the shrimp population says it remains in bad shape. The warming of the Gulf of Maine is one factor.
A Berlin start-up is breeding bass and basil in the same waters. The fish are providing the nutrients for the plants - an unusual but effective form of aquaculture. Fish fertilizes plant. This formula is what is called aquaponics. In special facilities, fish and plant are bredsimultaneously, with a common water and nutrient cycle. Up to 90 percent less water consumption is possible, according to the Federal Information Center for Agriculture.
It is a concept that works, at least in Berlin-Schönefeld. Here we can find the ECF farm, which combines the cultivation of cichlids with the cultivation of herbs. "The special thing is that the water here is not coming from outside: it first flows past our fish," says Nicolas Leschke, co-founder of ECF Farmsystems. "Hauptstadtbasilikum" and "Hauptstadtbarsch" are the names of the products that end up at around 350 supermarkets in the region. Thousands of pots of basil are leaving the farm every week.
Slow growth of the fisheries sub-sector in Kenya has been attributed to climate change, environmental degradation and over-fishing.
This is in addition to post harvest losses which Agriculture Cabinet Secretary Mwangi Kiunjuri says is being addressed through establishment of value addition facilities and promotion of fish consumption as well as the planned establishment of a fish market and auction center in Mombasa.
Kenya will be joining the world in marking the Fisheries Day on Friday next week. Statistics show that at least 2 million people benefit directly or indirectly from fisheries in the country.
Oysters, scallops, and clams are some of the popular local delicacies. They’re also big business up and down the Atlantic coastline. But these species of shellfish are facing a potential threat that can’t even be seen: It’s a phenomenon known as ocean acidification.
Increases in carbon dioxide in the atmosphere from the burning of fossil fuels is one of the causes, said Matt Charette, of the Woods Hole Oceanographic Institute. The ocean absorbs the carbon dioxide, changing the chemistry of seawater.
It might be considered the national dish, but the soaring cost of its two key ingredients is turning many shoppers off a fish and chip supper.
The price of fresh and frozen fish has risen by about 4 per cent over the past year – and up to 10 per cent since 2016 – meaning many supermarket shoppers are turning their backs on the traditional meal.
At the same time, a potato shortage caused by a combination of severe winter weather and the summer heatwave is threatening to put some chippies out of business.
PORTLAND, Maine - Valuable species of shellfish have become harder to find on the East Coast because of degraded habitat caused by a warming environment, according to a pair of scientists that sought to find out whether environmental factors or overfishing was the source of the decline.
The scientists reached the conclusion in stccudying the decline in the harvest of four commercially important species of shellfish in coastal areas from Maine to North Carolina — eastern oysters, northern quahogs, softshell clams and northern bay scallops. They reported that their findings came down squarely on the side of a warming ocean environment and a changing climate, and not excessive harvest by fishermen.
One of the ways warming has negatively impacted shellfish is by making them more susceptible to predators, said the lead author of the study, Clyde MacKenzie, a shellfish researcher for the National Oceanic and Atmospheric Administration who is based in Sandy Hook, New Jersey.
The first Canadian striped bass fishery in 20 years is making a splash in the U.S. and across Canada.
Eel Ground First Nation obtained a commercial fishery licence this year, marking the first time the Department of Fisheries and Oceans has allowed the fishery since striped bass were labelled endangered in 1996.
Joseph Nagle, purchasing and sales manager at Boston wholesaler John Nagle Co., says the first shipment of 1,800 pounds sold out on the first day.
"It was quite successful in terms of just the initial interest and the quality of the fish," he said. "It flew out the door, if you will.