Achilles Tang
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Posts posted by Achilles Tang
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Research has shown that carefully recompressing rockfish that have been brought up from the ocean floor may help them temporarily recover from the rapid change in pressure, but scientists have been uncertain whether there were any long-lasting effects on the fish.
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Temperature explains much of why cold-blooded organisms such as fish, amphibians, crustaceans, and lizards live longer at higher latitudes than at lower latitudes, according to new research.
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Researchers studying ancient rock samples in South China has found that the first animal fossils in the paleontological record are preserved in ancient lake deposits, not marine sediments as commonly assumed. The research gives scientists a glimpse into where some of the early animals lived and what the environmental conditions were like for them -- important information for addressing the broader questions of how and why animals appeared when they did.
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Nearly all species have some ability to detect light. At least three types of cells in the retina allow us to see images or distinguish between night and day. Now, researchers have discovered in fish yet another type of cell that can sense light and contribute to vision.
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For the first time in nearly 50 years, a population of a nearly extinct frog has been rediscovered in the San Bernardino National Forest's San Jacinto Wilderness. Biologists retracing a 1908 natural history expedition rediscovered the rare mountain yellow-legged frog.
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Marine pest species costing billions in damage to fisheries, coastal communities and infrastructure are spreading as the world's shipping nations continue to largely neglect bringing into effect an international treaty setting out requirements for consistent handling and treatment of ships' ballast water, according to new report.
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Scientists say conditions are favorable for significant coral bleaching and infectious coral disease outbreaks in the Caribbean, especially in the Lesser Antilles. Similar conditions may develop in Gulf of Mexico and Central Pacific. The forecast is based on the July NOAA Coral Reef Watch outlook, which expects continued high water temperatures through October 2009.
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It's a niched topic but i am sure that most SG reefers will find good info from the guest speaker apart from the subject matter when it becomes more casual after the talk!
Do support!
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Try not to get hard corals. They won't last long with your set up constraints. I see some of them were pretty bleached, they must be highly stressed before.
Happy reefing!
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Acoustic tags and numerical river models are two technologies that are helping improve salmon passage at the Columbia Basin's hydroelectric dams. An average of 76 percent of juvenile Chinook salmon that pass through the lower 100 miles of the Snake River and its three hydroelectric dams survived the trek in the spring of 2008, according to a joint study between PNNL and the U.S. Army Corps of Engineers' Portland District.
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Recent news reports about scuba divers off San Diego being menaced by large numbers of Humboldt's or jumbo squid have raised the ire of a University of Rhode Island biologist. As a leading expert on the species who has dived with them several times, he calls the reports "alarmist" and says the squid's man-eating reputation is seriously overblown.
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The ice is melting, the sea level is rising and species are conquering new habitats. The warming of the world climate has many consequences. Researchers now report that climate change influences the size of aquatic organisms.
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How do you recognize a new species? A thorough study of the million-year evolution of California's horned lizards, sometimes referred to as "horny toads," shows that when it comes to distinguishing such recently diverged species, the most powerful method integrates genetic, anatomical and ecological information. (2009-07-22)
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A reduction of as little as five per cent in fisheries catch could result in as much as 30 per cent of the British Columbia coastal ecosystems being protected from overfishing, according to a new study from the UBC Fisheries Centre. (2009-07-22)
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Using snorkelers and SCUBA divers is not the best way to monitor fish populations, if we want to know the evolutionary effects of overfishing. The fish population in coral reef areas is often assessed by snorkelers or SCUBA divers, but new research shows that these methods may misrepresent the number of fish.
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A reduction of as little as 5 percent in fisheries catch could result in as much as 30 percent of the British Columbia coastal ecosystems being protected from overfishing, according to a new study.
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A new study shows that bleached corals bounce back to normal growth rates more quickly when they have clean water and plentiful sea life at their side.
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Counting the horns of California's horned lizard, or coast horned lizard, is one way to try to distinguish separate species, but a new study shows that to be unreliable. Biologists considered genetic, morphological and ecological data to separate the species into three, ranging from Baja to Northern California.
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The water mould Saprolegnia can cause skin disease in salmon during its freshwater phase. The mould attacks both fish and eggs and has at times caused great economic loss for the fish farming industry, both in Norway and in other salmon-producing countries. Saprolegnia infection may be seen with the naked eye as white patches on the skin or as "cotton-like" patches on eggs.
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Sea lampreys, which arose from the jawless fish that first appeared a half-billion years ago, dramatically remodel their genomes during embryonic development. This is believed to be the first recorded observation of a vertebrate reorganizing its genome during normal development. Evolutionary biologists are interested in how and why the lamprey re-organizes its genome because the animal is a living fossil with millions of years of evolutionary history. Its closest ancestors were among the first vertebrates on earth.
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A study of oyster reefs in a once-pristine California coastal estuary found them devastated by invasive Atlantic Coast crabs and snails, providing new evidence of the consequences when human activities move species beyond their natural borders.
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Every winter, thousands of seabirds are washed up on shore having perished in unexplained "winter wrecks." To find out why so many seabirds die, researchers calculated the energy requirements of auks and Brünnich's guillemots and found that the birds may not be able to eat enough to survive the North Atlantic's harsh winter conditions.
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Suspending a life in time is a theme that normally finds itself in the pages of science fiction, but now such ideas have become a reality in the annals of science.
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Consumers may soon be able to eat longer-lasting, potentially healthier fish filets. Scientists have extended the shelf life of lingcod fillets and made them more nutritious by dipping them into an edible, protective coating enriched with fish oil.
Red List overlooks island species
in General Reefkeeping_
Posted
The criteria of the International Union for the Conservation of Nature (IUCN)'s Red List are an essential tool for evaluating the conservation status of species around the planet, and according to these criteria all the species in the Canary Islands are endangered. (2009-07-27)
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