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Tag: "whales" at biology news

The secret lives of whales

...xicology, scientists are peering into the lives of whales ?past and present ?in ways never before possible. ...om the Japanese meat market, where Antarctic minke whales killed for “scientific research?are legally sold as food, Palumbi examined variations in mitochondri...

Researchers reveal the infectious impact of salmon farms on wild salmon

...ystems ?everything depends on them ?from salmon to whales to seabirds. Every commercially important fish is either directly or indirectly dependent on herring." "Previous studies have been dismissed by industry, but past studies haven't looked at such large samples or the spatial aspect," says fisheries bi...

Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska

...now left us with only a few dozens. Recently these whales have been recognized as a different species from right whales seen in the North Atlantic and others in the Southern Hemisphere. To help define areas and ecologic...

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

...opmental pattern in bottlenose dolphins and killer whales that is unique from other mammals, with calves of ...ep." Researchers observed two adult female killer whales and their calves at Shamu Stadium at SeaWorld San Diego and four dolphins and their calves housed at...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...ry far-reaching consequences for predatory fishes, whales and humans. Predators can dependably locate zooplankton aggregations by tracking well-defined cues, for example, sharp temperature gradients that occur across downwelling fronts where cold and warm waters meet. Vertical currents are common in many o...

FSU scientist warns North Atlantic right whale facing extinction

...d with reducing the number of North Atlantic right whales killed by human activity, the government simply is...whale, it is time to enforce that mandate." Right whales range in the coastal waters of eastern North America from the Canadian Maritimes to Florida, regions...

Scientists to mimic nature for newest cancer drugs

...d with reducing the number of North Atlantic right whales killed by human activity, the government simply is...whale, it is time to enforce that mandate." Right whales range in the coastal waters of eastern North America from the Canadian Maritimes to Florida, regions...

More animals join the learning circle

Killer whales and chimpanzees both pass on "traditions" to other...tist, 11 June, p 12). But the evidence from killer whales is much more conclusive because the process was observed from start to finish. Some researchers hav...

'Sinkers' provide missing piece in deep-sea puzzle

...ested that algal blooms or the sunken carcasses of whales and other large animals could account for the missing food. Robison believes that, although these sources may be important in some areas, they are not persistent enough or substantial enough to account for what is apparently a world-wide phenomenon. ...

Genetics links whale to two different ocean basins

... of the African continent. "While the movement of whales from one ocean to another has always been a possib...amples extracted from skin biopsies collected from whales in the wintering grounds of both the Indian and South Atlantic Oceans for evidence of inter-oceanic ...

Envisat radar surveillance protects endangered prehistoric fish

...le in the ecosystem there, providing sustenance to whales and seals. Toothfish dwell in deep waters on the edge of coastal shelves and sea mounts. Individual toothfish can live for 40 years but take a decade to reach adulthood: their slow-maturing character makes them especially vulnerable to overfishing....

Seal rookeries could provide a reliable food source for endangered California condors, study finds

... Sciences (PNAS), the research team concludes that whales and seals have been an integral part of the condor...ast. Then people come over again and killed seals, whales and sea lions, so the condors had to feed on cattle. Then we change our ranching practices so cattle...

Frog’s ear canal may provide insights for understanding human hearing loss

...mphibians to the small group of vertebrates (bats, whales and some rodents) that use ultrasound for communication. This study may provide a clue for understanding why humans have ear canals: to improve sensitivity to high-frequency sounds." Amolops tormotus, also referred to as the concave-eared torrent fr...

Marine mammals are on the frontline of failing ocean health

...f chronic, low-level exposure. Animals like killer whales and polar bears, who share many of our marine food...f a puzzle." Some suspect that declines of killer whales in Puget Sound may be linked directly to contaminated fish or increased susceptibility to stresses l...

Warbling whales speak a language all their own

...Researchers have now mathematically confirmed that whales have their own syntax that uses sound units to bui...icate. For six months each year, all male humpback whales in a population sing the same song during mating season. Thought to attract females, the song evolve...

Rare Chinese frogs communicate by means of ultrasonic sound

... an amphibian being able to communicate like bats, whales and dolphins, said corresponding author Albert S. ...rum of the background noise. Mammals such as bats, whales and dolphins do this, and use ultrasound for their sonar system and communication. Frogs were never ...

El Nino events affect whale breeding

...bal climate processes are affecting southern right whales (Eubalaena australis) in the South Atlantic. A thi... a strong relationship between breeding success of whales in the South Atlantic and El Nino in the western Pacific. The results are published this week in the...

Yale researchers find environmental toxins disruptive to hearing in mammals

...ound would be compromised. He also speculated that whales and other marine mammals exposed to TBT would have...sonar to get around, this could be contributing to whales and dolphins beaching and hitting ships," Santos-Sacchi said. ...

Research tracks whales by listening to sounds

...developed a new tool to help them study endangered whales ?autonomous hydrophones that can be deployed in th...e discovery by a team of researchers of rare right whales swimming in the Gulf of Alaska. "There has been only one confirmed sighting of a right whale in the...

Underwater listening devices yield discoveries about endangered large whales

Why whales emit their characteristic calls remains largely a ...er. And critically endangered North Pacific right whales have been detected acoustically in locations where they were formerly abundant but have not been see...

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