Achilles Tang
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Canadian scientists uncover alarming invasion of round goby into Great Lakes tributaries: impact on endangered fishes likely to be serious. (2009-08-12)
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Flower Garden Banks National Marine Sanctuary is among the healthiest coral reef ecosystems in the tropical Caribbean and Gulf of Mexico, according to NOAA researchers. Their report offers insights into the coral and fish communities within the sanctuary based on data collected in 2006 and 2007.
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Hypoxia, or lack of oxygen, in bottom waters is a well known environmental problem. New research in Sweden adds to the list of ill effects: hypoxia leads to increased levels of manganese, which damages the immune response in marine animals.
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Canadian scientists have identified a drastic invasion of round goby into many Great Lakes tributaries, including several areas of the Thames, Sydenham, Ausable and Grand Rivers. A number of the affected areas are known as "species-at-risk" hot spots.
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Over 350 new species including the world's smallest deer, a "flying frog" and a 100-million-year old gecko have been discovered in the Eastern Himalayas, a biological treasure trove now threatened by climate change. A decade of research carried out by scientists in remote mountain areas endangered by rising global temperatures brought exciting discoveries such as a bright green frog that uses its red and long webbed feet to glide in the air.
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Fishermen know you need good fishery management to ensure healthy fish populations for future generations. And good decisions rely on understanding fish mortality -- how many fish die each year as a result of natural causes and recreational and commercial fishing. Scientists have utilized new research to give fishery managers better data on how fish are dying, so they can make informed decisions on how to ensure a healthy fish population.
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New technology designed to analyze large numbers of novel marine microbes could lead to more efficient and greener ways to manufacture new drugs for conditions such as epilepsy, diabetes, flu and other viruses, as well as improving the manufacture of other products such as agrochemicals.
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Fish-processing industry could save energy worth tens of millions of kroner a year by adopting the results of recent research.
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More science current events, Threatened Species science news articles, research and discoveries from Brightsurf.com
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A new discovery reveals how venomous sea snakes deceive their predators into believing they have two heads.
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A gene previously associated with physical traits is also dictating behavior in a tiny fish widely regarded as a living model of Darwin's natural selection theory, according to a new study.
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Marine biologists have demonstrated that there is considerable diversity amongst the smallest microalgae belonging to the group of so-called haptophytes. Scientists have shown that these photosynthetic microorganisms, highly diversified and extremely abundant, are some of the most important producers of oceanic organic matter.
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For the first time, researchers have definitively shown that shipwrecks and other man-made structures increase the potential for large invasions of unwanted species into coral reefs, even comparatively pristine ones. These unwanted species can completely overtake a reef and eliminate native corals, dramatically decreasing the diversity of marine organisms on the reef. Coral reefs can undergo fast changes in their dominant life forms, a phenomenon referred to as phase shift.
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There is mounting evidence that omega-3 fatty acids from fish or fish oil supplements not only help prevent cardiovascular diseases in healthy individuals, but also reduce the incidence of cardiac events and mortality in patients with existing heart disease. A new study extensively reviews data from a broad range of studies in tens of thousands of patients and sets forth suggested daily targets for omega-3 consumption.
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Entire populations of North American fish already are being affected by several emerging diseases, a problem that threatens to increase in the future with climate change and other stresses on aquatic ecosystems, according to biologists.
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Freshwater fish, especially stream fish, rely on terrestrial insects as a portion of their food supply. But little is known about their importance to fish in lakes, where the size and shape of a lake can determine how much its fish rely on shoreline food sources. Researchers found that trout in developed lakes had a 50 percent lower daily intake of energy.
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A groundbreaking assessment of marine fisheries and ecosystems reveals that overfishing has been reduced in several regions around the world, resulting in some stock recovery. Importantly, the work bolsters the case that sound management can contribute to the rebuilding of fisheries elsewhere.
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Mounting evidence that human activity is changing the world's oceans in profound and damaging ways is outlined in a new scientific discussion paper released today. (2009-07-29)
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Scientists are comparing annual growth rings of the Pacific Northwest's largest bivalve and its most iconic tree for clues to how living organisms may have responded to changes in climate.
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Using a combination of theoretical modeling, energy calculations, and field observations, researchers have for the first time described a mechanism that explains how some of the ocean's tiniest swimming animals can have a huge impact on large-scale ocean mixing.
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Mammals and many species of birds and fish are among "evolution's winners," while crocodiles, alligators and a reptile cousin of snakes known as the tuatara are among its losers, according to a new study. The study also shows new species emerge nearly as often as they die off.
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Hungry, sexual organisms replaced well-fed, clonal organisms in the Caribbean Sea as the Isthmus of Panama arose, separating the Caribbean from the Pacific, report researchers. The fossil record shows that if a species could shift from clonal to sexual reproduction it survived. Otherwise it was destined for extinction, millions of years later.
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Governments must act urgently to halt loss of habitats and invading species that are posing major threats to biodiversity and causing species extinctions across Australia, New Zealand and the Pacific Islands, according to a new study.
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For avid fishermen and anglers, the largemouth bass is a favorite freshwater fish with an appetite for minnows. Once fish evolve the size and speed needed to become top predators, natural selection keeps them in an evolutionary holding pattern, a new study finds. A new study finds that once they evolved to eat other fish, largemouth bass and fellow fish-feeders have remained relatively unchanged compared with their insect- and snail-eating cousins. As these fishes became top predators in aquatic ecosystems, natural selection put the breaks on evolution, say researchers.
Scientists Conduct Shark Survey Off U.S. East Coast
in General Reefkeeping_
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Sandbar, dusky and tiger sharks are among dozens of shark species living in the coastal waters off the U.S. East Coast. Little is known about many of the species, but a survey begun nearly 25 years ago is helping scientists and fishery resource managers to monitor shark populations and their role in marine ecosystems
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