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Tag: "predator" at biology news

Creating a window on 'oceans in motion'

...f individual Pacific Ocean animals spanning 21 top predator species, including whales, tuna, elephant seals, seabirds, sea turtles and sharks. "Tiny microprocessors and sophisticated remote sensing systems now make it possible for scientists to explore the vast reaches of the open ocean from the perspective ...

What's shaped like a pear and has 2 genomes? Check the pond

...d gobbling up everything in its path. This tiny predator has a big name-- Tetrahymena thermophila --and a big fan club among scientists, as a star organism for research into how cells work. Scientists have now sequenced, assembled, and analyzed T. thermophila 's macronuclear genome. Their work, reported...

Study shows hope for ridding lakes of clawed invader

...ble to a "double whammy" of intensive trapping and predator fish manipulation to the point where it may actual...here the combination of trapping and pressure from predator fish pushes the rusty crayfish population to crash, with the lake ecosystem returning to its pre-rus...

Poison dart frog mimics gain when birds learn to stay away

...dators that they may be poisonous. In a series of predator learning experiments, the researchers found that t...olor pattern if it can enjoy the protection of the predator generalization brought on by more toxic species in the community." Taking predator avoidance learni...

Not just the birds

...ersity of California - Davis have shown that a top predator strongly affected plants and animals at the bottom...port nutrients between ecosystems. "An introduced predator alters Aleutian island plant communities by thwarting nutrient subsidies," is published in the Febru...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...riphery of their visual field ?whether a potential predator or prey is nearby. "Research on newly hatched chicks suggests that it works from very early on in an animal's development," says Dr. Troje. "It seems like their brains are 'hard wired' for this type of recognition." One impetus for starting this r...

Horseshoe crab decline threatens shorebird species

...nfluential than the presence of human disturbance, predator occupation, and availability of other types of food," says Karpanty, a post-doc in the College of Natural Resources. The red knot's dependence on the horseshoe crab for survival has attracted the interest of local, state, and international wildlife ...

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

... jagged teeth would have made it the most fearsome predator in the sea. Unlike the crocodiles we know today, ...rge teeth with serrated edges. It was definitely a predator of large sea creatures.?/p> Paleontologists Zulma Gasparini and Luis Spalletti of the National U...

Brainstem blocks pain to protect key behaviors

... a strong puff of air ?perhaps indicating a nearby predator -- activated ON cells, and restored pain sensation. Such "predation-related stimuli," the authors speculate, "activate ON cells and thereby evoke a state of vigilant eating without concurrent sensory suppression." "We have known for a long time tha...

Missing fossil link 'Dallasaurus' found

... new marine environment and rose to become the top predator in their ecosystem, the T. Rex of the ocean." The...30 million years, eventually evolving into the top predator of their domain before becoming extinct some 65 million years ago," says Polcyn. The advanced fin-b...

Removing egg from nest may help save endangered whooping crane

...hicks is more likely to attract the attention of a predator and parents can be more attentive if they only have a single chick to protect. Even though long-term fitness is almost the same whether one egg or two is laid, the risk of extinction for the Wood Buffalo-Aransas whooping crane population is lowest...

Computer models aid understanding of antibody-dependent enhancement in spread of dengue fever

...better predator. But there comes a point where the predator gets so good it runs out of prey," explained lead author Derek Cummings, a research associate in the Department of International Health at the Bloomberg School. "We found that antibody-dependent enhancement helps the dengue virus spread faster, but t...

Sudden change in social status triggers genetic response in male fish, study finds

...ays, this experiment was more like nature, where a predator comes in and picks off a dominant fish opening up the field for non-dominant animals." Nighttime behavior To observe nighttime behavior of the cichlids, Burmeister donned infrared night-vision goggles and kept close watch on the experimental fi...

UCSD discovery may provide novel method to generate medically useful proteins

...ey protein, the phage must generate many different predator proteins for at least one to have an acceptable fi...amino acids at one or more of just 12 sites on the predator protein, the phage are able to generate 10 trillion proteins, each with the potential to bind to a d...

IMF Launches World’s First DNA Database for Myeloma Patients

...gonopodium has a higher chance of mating, but in a predator environment he has a higher probability of dying,"...busia hubbsi in the Bahamas, taking them from both predator and non-predator environments. He found that mosquitofish in predator-free environments had gonopodi...

Certain fish have a special mating preference

...gonopodium has a higher chance of mating, but in a predator environment he has a higher probability of dying,"...busia hubbsi in the Bahamas, taking them from both predator and non-predator environments. He found that mosquitofish in predator-free environments had gonopodi...

Bugs, even 'bad' ones, can be educationally beneficial, new book says

...n ladybird beetles (Rodolia cardinalis), a natural predator of the scale, to a Los Angeles orange grove destroyed almost all of the pests within six months. "By the end of 1889, the scale was no longer a threat anywhere in California," Waldbauer wrote. Waldbauer also recounted a more recent study in which ts...

At the molecular level, the predator is the prey

...ie said. "Ecological arms races that go on between predator and prey are really driven at the molecular level. We have no evidence, nor reason to believe, that TTX is changing too, but rather that the toxin responds in quantity. Pour on more toxin, change the snake's sodium channel. Add more toxin, force furt...

What the eye doesn't see

...ndeed protect insects from detection by birds, the predator most likely to have shaped the evolution of protective coloration in insects. Professor Innes Cuthill and his team pinned artificial 'moths' to trees in a field with a dead mealworm attached. The 'moths' were triangular pieces of waterproof card wit...

Scientists journey to southern Africa to unravel the secret world of elephant communication

... far away," she says. "Or maybe they can tell if a predator is in the vicinity by picking up seismic cues from...susceptible to attacks by lions and hyenas. When a predator appears, older members of the herd emit intense warning calls that prompt the rest of the herd to cl...

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