Tag Archives | fish


Mercury levels in herbal teas surprise scientists

A new study from the University of Bristol (UK) suggests that fish accounts for only seven percent of mercury levels in the human body, while herbal teas appear to be a significant, previously unrecognized, contributor. The negative effects of mercury on fetal development have been well documented and led to official warnings against eating too […]

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Rising CO2 giving fish super-hearing

Ocean acidification is known to negatively impacta wide variety of marine animals, but new research indicates that a huge increase in hearing sensitivity for fish could also be one of the effects. In the new study, published in the Proceedings of the National Academy of Sciences, researchers report on the potential effects of acidification on […]

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Flushed pharmaceuticals fueling fearless fish

Widely prescribed anxiety-moderating drugs such as Serepax are persisting through wastewater treatment plants after being excreted and modifying fish behaviors, making them bolder and avoid other fish. The study, by researchers at Ume� University in Sweden, focused on the drug oxazepam (marketed as Serepax, Alepam, Medopam, Murelax, Noripam, and others). Reporting their findings in Science, […]

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Smaller fish on the menu as oceans warm

Warmer and less-oxygenated waters could see many fish species reduce in size by up to 20 percent over the next few decades, according to computer modeling carried out by University of British Columbia (UBC) scientists. Their study, published in the journal Nature Climate Change, included more than 600 species of fish from around the world. […]

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Gene mutation behind African migration also responsible for modern health woes

The brain-boosting genetic mutation that allowed primitive man to migrate across the African continent is over-represented in modern-day African Americans and is believed to be responsible for the higher rates of hypertension, diabetes, coronary heart disease and cancer in that racial group. The findings are the result of a genetic analysis of different racial and […]

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Rising CO2 levels creating crazy fish

Rising oceanic carbon dioxide (CO2) levels are disrupting a key brain receptor in fish, causing dramatic changes in their brain chemistry, behavior and sensory abilities, say Australian researchers from the ARC Centre of Excellence for Coral Reef Studies. Their work appears in the journal Nature Climate Change. Around 2.3 billion tons of human CO2emissions dissolve […]

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Fish frequent flyers

A new Northern Arizona University study into how fish behave when stranded on land suggests that excursions onto dry land may be a much more frequent event than previously thought. The research, which has significant implications for the field of evolutionary biology, appears in JEZ A: Ecological Genetics and Physiology. The study began by looking […]

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Gender-bending pollutants’ impact quantified

A four year study from the UK has shown that the effects of hormone-like pollutants are very damaging to fish populations, reducing their reproductive performance by up to 76 percent. Led by the universities of Exeter and Brunel, the new study has important implications for understanding the impacts of these chemicals on ecosystem health and […]

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Mad fish disease could threaten humans

Writing in the Journal of Alzheimer’s Disease, neurologist Robert P. Friedland questions the safety of eating farmed fish that are fed byproducts rendered from cows, adding a new worry to concerns about the nation’s food supply. Friedland, from the University of Louisville, and his co-researchers suggest that farmed fish could transmit Creutzfeldt Jakob disease – […]

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Wings Get Help From Whales

Wind tunnel tests of scale model humpback whale flippers have shown that the scalloped, bumpy flipper is a more efficient wing design than is currently used by the aeronautics industry on airplanes. The tests show that bump-ridged flippers do not stall as quickly and produce more lift and less drag than comparably sized sleek flippers. […]

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