Tag: "dolphins" at biology news

The secret lives of whales

...o process low-frequency sounds into images just as dolphins do with high frequency sounds, and they must have remarkable acoustic memories just as we have visual memories,?says Clark. Clark concludes that he and other researchers have been thinking about whale herds at the wrong scales, which has been constr...

Elephants imitate truck noises, other animals

... animals that separate and reunite over time, like dolphins and whales, some birds, and bats. Researchers fro...nd acoustics signals of marine mammals, especially dolphins and whales, for decades. "It is exciting to see that African savannah elephants follow a pattern we...

Elephants imitate sounds as a form of social communication

... animals that separate and reunite over time, like dolphins and whales, some birds, and bats. Researchers fro...nd acoustics signals of marine mammals, especially dolphins and whales, for decades. "It is exciting to see that African savannah elephants follow a pattern we...

Solutions that reduce death of marine life reeled in by International Smart Gear Competition

...he "cetaceans" category. More than 300,000 whales, dolphins and porpoises--or cetaceans--are estimated to die every year from entanglement in fishing gear, more than from any other cause. Chemist Norm Holy from Pennsylvania, fisheries biologist Ed Trippel from Canada, and fisherman Don King from Massachusetts...

Scientists find viruses can't stick to sea bugs in the dark

...ucts and killing fish, sea mammals such as whales, dolphins and seals, and even humans. Control of these blooms is vital to the health of the seas. "Research using cyanophages to control blooms of cyanobacteria must take light into consideration," explains Ying Jia. Algal blooms can use up the oxygen in wate...

Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development

...tists report a developmental pattern in bottlenose dolphins and killer whales that is unique from other mammal...es at Shamu Stadium at SeaWorld San Diego and four dolphins and their calves housed at the Gelendgick Dolphinarium and the Utrish Marine Mammal Research Station...

More animals join the learning circle

... Behavior Society meeting in Snowbird, Utah. Wild dolphins off the west coast of Australia were the first marine mammals in which cultural learning was observed. They apparently learn from group-mates how to use sponges to protect their snouts while scavenging (New Scientist, 11 June, p 12). But the evidence...

Leading scientists rank endangered dolphins, porpoises most in need of immediate action

...nue to languish without intervention. The list of dolphins and porpoises that could recover if changes to fis... porpoises are killed each year; Atlantic humpback dolphins off the coast of west Africa; and franciscana dolphins in South America. Most of the species on the ...

Canada's first embryonic stem cell lines

...nue to languish without intervention. The list of dolphins and porpoises that could recover if changes to fis... porpoises are killed each year; Atlantic humpback dolphins off the coast of west Africa; and franciscana dolphins in South America. Most of the species on the ...

Novel targets found for the development of drugs to complement, or replace, statins

...nue to languish without intervention. The list of dolphins and porpoises that could recover if changes to fis... porpoises are killed each year; Atlantic humpback dolphins off the coast of west Africa; and franciscana dolphins in South America. Most of the species on the ...

Virulizin granted orphan drug status in Europe

...nue to languish without intervention. The list of dolphins and porpoises that could recover if changes to fis... porpoises are killed each year; Atlantic humpback dolphins off the coast of west Africa; and franciscana dolphins in South America. Most of the species on the ...

Swimming with dolphins can alleviate depression

Swimming with dolphins is an effective treatment for mild to moderate dep...mental group swam and snorkelled in the water with dolphins for one hour a day. Participants in the control group were assigned to the same water activities, bu...

Bats use touch receptors on wings to fly, catch prey, study finds

...ocation, a kind of biological sonar found in bats, dolphins and a few other animals. Bats use echolocation to identify and navigate their environment by emitting calls and listening to the echoes that return from various objects. Zook believes the touch-sensitive receptors on bats' wings work in conjunction ...

Rare Chinese frogs communicate by means of ultrasonic sound

...background noise. Mammals such as bats, whales and dolphins do this, and use ultrasound for their sonar system and communication. Frogs were never taken into consideration for being able to do this." Adler had drawn attention to the species because the frogs do not have external eardrums, raising the possi...

Zebra finches remember songs dad sang

...ons by imitating members of their species ?whales, dolphins and parrots, for instance ?but they take a long time to mature, are endangered or are too difficult to work with in laboratories. Vicario, an associate professor of psychology, and Phan, a postdoctoral associate in psychology, study sensorimotor pro...

Yale researchers find environmental toxins disruptive to hearing in mammals

...t around, this could be contributing to whales and dolphins beaching and hitting ships," Santos-Sacchi said. ...

How ancient whales lost their legs, got sleek and conquered the oceans

... used developmental data from contemporary spotted dolphins and fossils of ancient whales to try to pinpoint the genetic changes that could have caused whales, dolphins and porpoises to lose their hind limbs. More than 50 million years ago the ancestors of whales and ...

Dolphins at risk

Bottlenose dolphins that reside in designated Special Areas of Conserv...e particularly vulnerable Recently more than 600 dolphins died mysteriously off the Indian Ocean archipelago in Zanzibar. The phenomenon has created a stir am...

South Pacific plant may be missing link in evolution of flowering plants

Bottlenose dolphins that reside in designated Special Areas of Conserv...e particularly vulnerable Recently more than 600 dolphins died mysteriously off the Indian Ocean archipelago in Zanzibar. The phenomenon has created a stir am...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

.... The primary example is the cetaceans ?whales and dolphins ?many of which have lost their sense of smell." Catania devised a series of experiments to determine whether the star-nosed mole and another small, semi-aquatic mammal - the water shrew - can smell objects underwater. Using a high-speed camera, he ...

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