crustacean News
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Plankton beats insecticides at mosquito control
Improving the biodiversity of ponds and lakes in malaria-endemic regions could offer a powerful and sustainable way to control malaria. A common mosquito-controlling strategy is to apply biological insecticides, such as Bacillus thuringiensis israelensis (Bti) — a bacterium that produces toxins that target mosquito larvae. Because of this precise impact, Bti treatment preserves more ...
By SciDev.Net
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Maturation diets for shrimp
In recent years, shrimp culture has become one of the most important aquaculture industries in the world. Current production levels reach over three million tonnes per year, corresponding to a market volume of over US$10 billion (FAO 2008). However, even with this expansion in the production there are some unknowns. One of the problems with shrimp (and other crustacean) culture is broodstock ...
By Nutra-Kol
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Americas region fishery update
Since our last newsletter in September, one fishery was certified, one was re-certified and three entered full assessment in the Americas region. The U.S. Atlantic sea scallop fishery, the highest landed value fishery in the United States, achieved MSC certification in December. The Alaska salmon fishery earned MSC re-certification in November and established a new milestone by becoming the ...
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Matexcel Offers Animal-free Chitosan for Worldwide Researchers
Matexcel, one of the leading service providers in material science that is committed to providing better materials for worldwide customers, now provides various animal-free chitosan for research use. What is chitosan? Chitin and chitosan are natural biopolymers found in crustacean shells, insect and mollusk exoskeletons, and fungi cell walls. These biopolymers have numerous applications in ...
By Matexcel
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FDA ramps up refusals of shrimp with salmonella
FDA Ramps Up Refusals of Shrimp with Salmonella in September, Refusals for Antibiotic-Contaminated Shrimp Already Exceeds Annual Totals of Last Two Years. For September, the U.S. Food and Drug Administration (FDA) reported that 6 out of the 75 (8.0%) total seafood entry line refusals were of shrimp for reasons related to banned antibiotics. With three months left to go in 2019, the FDA has now ...
By tru Shrimp
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Getting the Most out of Aquaculture: Pearls of Wisdom from Farmed Oysters
As global populations rise, so does the demand for seafood. In developed nations, the health benefits of a diet high in fish and seafood are regularly touted. In developing nations, fish and seafood often comprise a large portion of the diet. Aquaculture—farming of fishes, mollusks, crustaceans and plants in an aquatic environment—is a booming business (approximately $119 billion in ...
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Aquaculture: Some facts and figures
Aquaculture is the farming of aquatic organisms, including fish, finfish, shellfish (mollusks and crustaceans), and aquatic plants in controlled or selected aquatic environments. Farming implies some form of intervention in the rearing process to enhance production, such as regular stocking, feeding, and protection from predators. Farming also implies individual or corporate ownership of ...
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The impact of pesticides on freshwater creatures
A recent study has concluded that, although spray drift of pesticides can have short-term effects on individual stream-dwelling invertebrates, there is no evidence to suggest that there is an impact on populations as a whole. However, to reduce the impact of the pesticides on these organisms, a no-spray buffer zone is shown to be a simple and effective measure. Pesticides play an important role ...
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Îles-de-la-Madeleine lobster fishery in Canada achieves MSC certification
The Îles-de-la-Madeleine lobster (Homarus americanus) trap fishery was certified following an independent assessment conducted by SAI Global to the Marine Stewardship Council (MSC) standard for sustainable, well-managed fisheries. The fishery is located in Lobster Fishing Area (LFA) 22 surrounding the Magdalen Islands in the Gulf of St. Lawrence off the east coast of Canada. Lobsters ...
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Plastic litter found in fish guts
Tiny pieces of plastic are being taken up by a range of different fish species with unknown effects on their health, according to a new study. Researchers examined the gut contents of ten different species of fish found in UK waters and showed that so-called ‘microplastics’ were found in all species. Between 60 and 80% of marine litter is plastic. Although larger items are well ...
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Mapping pesticide contamination risk
A new computerised tool helps regulators identify water sources at risk of pesticide contamination. The tool can be used to produce maps indicating water bodies at risk of contamination by taking into account: adjacent land-use, the concentration of pesticides in the environment and biological indicators of contamination. Protection of water resources is a key priority for the EU and water bodies ...
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What are the impacts of fish-farming on marine ecosystems?
New EU-supported research in the Mediterranean Sea has assessed the impact of fish-farming on seafloor ecosystems. Results indicate that impacts are only apparent in habitats with no vegetation, but the researchers suggest that habitats with vegetation seagrass could be masking the effects. The EU Marine Strategy Framework Directive 2008/56 1 aims to achieve good environmental status of the EU's ...
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Fish farm parasite drug threatens wildlife
A drug used to treat parasite infections at fish farms can contaminate the surrounding environment and threaten local wildlife, a new study shows. Following a week-long treatment at a Norwegian salmon farm, the authors found concentrations of an anti-sea-lice drug that were high enough to kill some crabs, shrimps and lobsters. However, they suggest the drug is not likely to pose a risk to humans. ...
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Rethinking Fish Farming to Offset Its Public Health and Environmental Risks
As government agencies recommend greater consumption of seafood for its health benefits, a new analysis led by researchers from the Johns Hopkins Center for a Livable Future urges medical and public health professionals to consider the environmental and health impact of seafood sourcing, particularly aquaculture, or the farming of fish, shellfish and crustaceans. The paper appears in the July ...
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Rainfall changes threaten food production
The UN’s latest State of Food and Agriculture (SOFA) report warns that rainfall patterns will have changed so drastically by the end of this century that agriculture, forestry and fishing will all be seriously affected. “It will become more and more difficult to harvest crops, rear animals and manage forests and fisheries in the same places and in the same way as before,” says ...
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Aker BioMarine secures sustainable future for krill in the Antarctic Southern Ocean
The Aker BioMarine’s Antarctic krill fishery has been recertified against the world’s most robust standard for environmentally sustainable fishing. A rigorous, third party assessment has shown that the Antarctic based fishery continues to meet the Marine Stewardship Council’s (MSC) demanding standards. As a result, Aker BioMarine’s krill products, including krill oil, may ...
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EPA Announces Proposal to Add Chitosan to the List of Active Ingredients Permitted in Exempted Minimum Risk Pesticide Products
On August 20, 2020, the U.S. Environmental Protection Agency (EPA) announced that it is seeking to add chitosan to the list of active ingredients allowed for in minimum risk pesticides exempted from pesticide registration requirements under Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Section 25(b). A minimum risk product must meet six specific conditions to be exempted from ...
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Transgenic Corn Found to Damage Stream Ecosystems
BLOOMINGTON, Indiana, October 11, 2007 (ENS) - A widely planted variety of genetically engineered corn has the potential to harm aquatic ecosystems, finds a new study by an Indiana University professor of environmental science and his colleagues. Pollen and other plant parts containing toxins from genetically engineered Bt corn are washing into streams near cornfields and harming a type of fly ...
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Cost of Putting Seafood on Dinner Tables: 650,000 Marine Mammals Killed or Hurt by Foreign Commercial Fishing Each Year
In order to put wild-caught seafood on dinner tables, more than 650,000 marine mammals are killed or seriously injured every year in foreign fisheries after being hooked, entangled or trapped in fishing gear, and enforcement of a U.S. law to protect marine mammals could help prevent tens of thousands of these deaths, according to a new report issued today by the Natural Resources Defense Council. ...
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