fish 2 9

Tag: "fish" at biology news

Overfishing in inland waters reduces biodiversity and threatens health

...e. Although the status of inland waters and their fish species should be of broad concern, threats to fre... of animal protein. About 1 billion people rely on fish as their primary protein source. Landings from inland waters have increased more than fourfold since...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...ted by millions of waterfowl every year. Massive fish kills are a common occurrence at the Salton Sea, however, because of low dissolved oxygen, high hydrogen sulfide and ammonia concentrations, high temperatures and an increasing level of salinity. Due to noxious odors emanating from the Salton Sea, a...

Research: Snails were overlooked contributors to marsh destruction

...es and oceans. They provide nurseries for juvenile fish and shellfish, filter water-borne pollutants and calm storm-driven waves, reducing the threat of hurricane-induced flood and erosion. So scientists and citizens alike watched with alarm as the marshes started dying off from Louisiana to South Caroli...

The nude mouse tale: Omega-3 fats save the life of a terminal cancer patient

...e of omega-3 fatty acids, which are often found in fish oil or golden algae oil. Pardini's previous resea...as nude mice. His studies also demonstrated that fish oil consumption improves a mouse's responsiveness to chemotherapy. Fish oil research was inspired ...

Fossil find: 'Godzilla' crocodile had head of a dinosaur, fins like a fish

...ny snouts and needle-like teeth for catching small fish and mollusks,?he said. “But this croc was just the opposite. It had a short snout, and large teeth with serrated edges. It was definitely a predator of large sea creatures.?/p> Paleontologists Zulma Gasparini and Luis Spalletti of the National Un...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

... and bony skeletons. The species parasitizes other fish by attaching with their circular, toothy mouths an...ools. This level of potency tops that of all other fish attractants, including those of salmon. To find the pheromone, the researchers extracted 8,000 lit...

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

... and bony skeletons. The species parasitizes other fish by attaching with their circular, toothy mouths an...ools. This level of potency tops that of all other fish attractants, including those of salmon. To find the pheromone, the researchers extracted 8,000 lit...

Changes to embryos can elicit change in adult fish

...mp4 protein into the developing embryos of another fish species, the zebrafish, they saw that the mechanical advantage (and thus the biting power) of the jaw increased. "This experiment fuses the traditional disciplines of developmental genetics and evolutionary biology," said Streelman. "We've demonstr...

Wild Gorillas Handy with a Stick

...rillas in the wild. (Chimps famously use sticks to fish for termites and rocks to crack nuts in the wild; orangutans use sticks to extract seeds from the spiny, sharp husk of Neesia fruits in the wild, and bonobos use various tools, including moss as sponges and leafy twigs to swat away bees.) That no one...

Genetic analysis of cavefish reveals more about evolution

...he researchers examined two distinct cave-dwelling fish populations. To provide a framework in which to st..., the researchers performed a complementation test fish in both caves, which yielded only albino offspring. They concluded that albinism in these two cave p...

Older female fish prefer imperfect male mates, study finds

..., that is. As the size and age of female swordtail fish increase, so does the preference for males with as...20.3 years and 19.5 years, she said. The swordtail fish used in the latest research are two species of Mexican fish, Xiphophorus cortezi and Xiphophorus mal...

Envisat radar surveillance protects endangered prehistoric fish

...ies. Only French-owned ships are authorised to fish in the combined French Southern and Antarctic Territories EEZ, mostly working out of the French territory of Réunion Island, around 3000 kilometres west of Kerguelen. However this region has proved increasingly popular with pirate vessels intent on d...

Multiple genes permit closely related fish species to mix and match their color vision

...ht. By studying a special group of closely-related fish species inhabiting the Great Lakes of Africa, rese...y of New Hampshire, and their colleagues. Cichlid fish of the East African Rift Lakes are renowned for their diversity: Owing to migrations of ancestor spe...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...ral coastal communities traditionally dependant on fish for food security and livelihoods, with many small...ture were also profound. In Aceh, for example, 83 fish landing facilities and 20 ice plants were destroyed, along with about 40% of the small-scale fishing...

Katrina floodwaters not as toxic to humans as previously thought, study says

...umped back into Lake Pontchartrain could result in fish kills. He also says that heavy metals being discha...ake, particularly copper and zinc, can be toxic to fish and other marine life and may bioaccumulate and contaminate seafood collected from the region. More ...

Marine conservation organizations team up to conduct Indonesia coral reefs assessment

...that sufficient reef areas are protected such that fish and shellfish can prosper and reproduce." Shipboard expedition participants include: British marine biologist Annelise Hagan, Ph.D., the Khaled bin Sultan Living Oceans Foundation Research Fellow at Cambridge Coastal Research Unit, Department of Geo...

Science's Breakthrough of the Year: Watching evolution in action

...fluenza genes and chimpanzee genes and stickleback fish armor? Studies that follow evolution in action cla...to many, as in the case of the Alaskan stickleback fish that lost its armor and evolved from an ocean-loving species to a variety of landlocked lake dweller...

Deep treasure to be found in Oculina Bank

...port dense and diverse populations of more than 70 fish species and are critical breeding grounds for comm...tream makes them a potentially important source of fish larvae for the entire southeast U.S. continental shelf. Harbor Branch Oceanographic Institution sc...

Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find

...eneration. Focusing on guppies, small fresh-water fish biologists have studied for long, the researchers ...y explores how and why this happens. We found that fish from populations enjoying longer lifespans live longer because there is a selective increase in thei...

Getting an evolutionary handle on life after reproduction

...h. These findings also refute the suggestion that fish may experience little or no reproductive senescence based on evidence that they continue to produce eggs as adults. It's an open question whether postreproductive lifespan can influence fitness enough to be under selection. But in a field dominated b...

1 2 3 4 5 6 7 8 9 10