Achilles Tang
-
Posts
12,428 -
Joined
-
Last visited
Content Type
Profiles
Forums
Gallery
Posts posted by Achilles Tang
-
-
A powerful fish-killing toxin could have cancer-killing properties as well. The toxin, called euglenophycin, has a molecular structure similar to that of solenopsin, an alkaloid from fire ant venom known to inhibit tumor development.
-
Mercury's persistent and toxic presence in the environment has flummoxed scientists for years in the quest to find ways to mitigate the dangers posed by the buildup of its most toxic form, methylmercury. A new discovery, however, has shed new light on one of nature's best mercury fighters: bacteria.
-
Biologists have genetically mapped the sex chromosomes of several species of cichlid fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve.
-
Mass coral bleaching has devastated coral colonies around the world for almost three decades. Now scientists have found that bleaching can make corals more susceptible to disease and, in turn, coral disease can exacerbate the negative effects of bleaching. A new article shows that when they occur together, this combination of afflictions causes greater harm to corals than either does on its own.
-
New research is aiming at developing new dietary sources of long-chain omega-3 oils in grains and lamb. They are now developing oilseed crop plants that synthesize EPA and DHA in their oils.
-
A bluefin tuna, tagged by researchers in August 2008, was caught a year later by a professional bait boat off the coast of northern Spain. The animal had internally implanted electronic tag which enabled its migratory movements and the depth of these, amongst other data, to be obtained. First estimations of the geographical location of the recovered tag revealed that this fish had undertaken migrations between the Azores and Portugal during the winter, later to return to the Gulf of Bizkaia in spring and also that it had dropped, during the winter, to depths of more than 1000 meters.
-
NOAA and Norwegian researchers recently completed a comparative analysis of marine ecosystems in the North Atlantic and North Pacific to see what factors support fisheries production, leading to new insights that could improve fishery management plans and the ecosystems.
-
Tiny organisms known as archaea play a central role in the planet's nitrogen cycle, according to new research. Experiments show that archaea appear play a key ecological role in both upper and deep ocean ecosystems. This could affect calculations made by global climate models.
-
Wild salmon and farmed salmon can now be distinguished from each other by a technique that examines the chemistry of their scales.
-
A new study of microscopic marine microbes, called phytoplankton, has solved a 10-year-old mystery about the source of an essential nutrient in the ocean.
-
Scientist have revealed the first stage of the European eels mysterious migration to the Sargasso Sea by attaching pop up satellite tags to eels.
-
There may be plenty of fish in the sea but the medaka knows what it likes. A new study shows how a single gene mutation that turns Japanese Killifish a drab gray color renders them significantly less attractive to more colorful members of the opposite sex.
-
Just as people plug in to computers, smart phones and electric outlets to communicate, electric fish communicate by quickly plugging special channels into their cells to generate electrical impulses, researchers have discovered.
-
Everyone knows that frogs are in trouble. But a recent analysis of frog surveys done at eight Central American sites shows the situation is worse than thought. Under pressure from an invasive fungus, the frogs in this biodiversity hot spot are undergoing "a vast homogenization." "We're witnessing the McDonaldization of the frog communities," comments the lead author of the new study.
-
It is well documented that brown (grizzly) bears prey on major runs of salmon, charr and trout. In 2007, researchers were surprised to spot a brown bear caching whitefish near a stream in the Mackenzie Delta region of the Northwest Territories. This sighting has researchers advising increased care in petroleum extraction and infrastructure development within the area.
-
A new study indicates most of the world's low-lying river deltas are sinking from human activity, making them increasingly vulnerable to flooding from rivers and ocean storms and putting tens of millions of people at risk.
-
Scientists recently named a new species of chimaera, an ancient and bizarre group of fishes distantly related to sharks, from the coast of Southern California and Baja California, Mexico. The new species is the Eastern Pacific black ghostshark.
-
When a whale dies, it sinks to the seafloor and becomes food for an entire ecosystem. Researchers have discovered previously unknown species that feed only on dead whales - and use DNA technology to show that the species diversity in our oceans may be higher than previously thought.
-
Scientists from the Universities of Exeter and Plymouth are today calling for urgent research to understand the impact of renewable energy developments on marine life. (2009-09-17)
-
A new analysis of extinct sea creatures suggests that the transition from egg-laying to live-born young opened up evolutionary pathways that allowed these ancient species to adapt to and thrive in open oceans.
-
Scientists have detected high numbers of heat loving, or thermophilic, bacteria in subzero sediments in the Arctic Ocean. The bacterial spores might provide a unique opportunity to trace seepages of fluids from hot sub-seafloor habitats, possibly pointing towards undiscovered offshore petroleum reservoirs. The findings could also hold important clues for solving broader riddles of bio-geography. The results also point to the potential use of microbes in offshore oil and gas exploration.
-
Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened fall Chinook salmon salmon and allow them to grow larger before reaching the Pacific Ocean. To find out if that's the case, a team of researchers is implanting young fish with acoustic and radio tags to track their movement and using hydrological sensors to measure water temperature and speed.
-
Scientists are calling for urgent research to understand the impact of renewable energy developments on marine life. The study highlights potential environmental benefits and threats resulting from marine renewable energy, such as off-shore wind farms and wave and tidal energy conversion devices.
-
Using light, scientists traced a fish's swimming response to the neurons that control it. Their technique could become a powerful way to learn how biological systems work.
Black Rat Does Not Bother Mediterranean Seabirds
in General Reefkeeping_
Posted
Human activities have meant invasive species have been able to populate parts of the world to which they are not native and alter biodiversity there over thousands of years. Now, an international team of scientists has studied the impact of the black rat on bird populations on Mediterranean islands. Despite the rat's environmental impact, only the tiny European storm petrel has been affected over time by its enforced cohabitation with the rat.
View the full article