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Tag: "whales" at biology news

Creating a window on 'oceans in motion'

...mine priority species for tracking ?from salmon to whales and from polar bears to penguins ?and priority areas for ocean floor acoustic monitoring arrays. "These are key questions: which species do we want to track and exactly where do we wire up the world to create an effective global system of watching t...

Ecologists home in on how sperm whales find their prey

...logical Society's Journal of Animal Ecology, sperm whales ?like bats ?use echolocation consistently to track...stic recording tags to the dorsal surface of sperm whales with suction cups. The whales were then tracked acoustically with a towed hydrophone array. The res...

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

When ancient whales finally parted company with the last remnants of t...ntemporary spotted dolphins and fossils of ancient whales to try to pinpoint the genetic changes that could have caused whales, dolphins and porpoises to lose...

Common carp sheds new light on surviving in extreme environments

...ound in large quantities in diving mammals such as whales and seals and helps them remain submerged for long periods during deep sea dives. Similarly in humans, myglobin levels in the heart and some fatigue-resistant muscles increase when at high altitudes. New findings of myglobin levels in the common car...

Humpback whales have brain cells also found in humans

...taceans, the group of marine mammals that includes whales and dolphins, have demonstrated remarkable auditor...rough measure of intelligence, is lower for baleen whales such as the humpback compared to toothed whales such as dolphins, the structure and large brain size...

Small, smaller, smallest -- The plight of the vaquita

...es anywhere in the world than eastern Pacific gray whales and northern elephant seals, both of which came back from low numbers and now represent true conservation success stories. Similar efforts are needed urgently for the vaquita, a small animal living in a small area with a small, and ever-smaller, popu...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

... Whale falls, the slowly decaying remains of large whales sunk to the ocean's depths, harbor yet another uni...genera had already appeared by the time oceangoing whales would have filled the seas. Whale falls "are not instrumental in the evolution" of seep mollusks, b...

Saving endangered whales at no cost

... allow greatly reduced risk to the remaining right whales while providing benefit to fishermen. The authors point out that the basic problem of huge excess effort in lobster fishing is characteristic of other aspects of fishing industries around the world--including shrimp and tuna longline industries th...

Tracking sperm whales and jumbo squid

...scientists reports the successful tagging of sperm whales and jumbo squid swimming together off Mexico’s Pac...out the diving behavior of both species. "Sperm whales (Physeter macrocephalus) and jumbo squid (Dosidicus gigas) are both major predators that spend much ...

DNA analysis suggests under-reported kills of threatened whales

...meat sold in Korean markets suggests the number of whales being sold for human consumption in the Asian coun...n ?putting threatened populations of coastal minke whales further at risk. The study, involving numerous researchers led by Scott Baker of Oregon State Unive...

From the deep -- Researchers find new species of sea anemone

...nyon later this year in hopes of finding more dead whales with A. pearseae roosting on the bones. A successful trip could answer some of Daly's lingering questions about the species itself and, more broadly, may provide clues on how human activities affect this unique, seemingly removed ecosystem. "The t...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...TCHING KILLER WHALES IN THE ACT Catching killer whales hunting their prey has been difficult, in part bec...trike at night. Among the most elusive of killer whales are the "transient" type, so-named because they follow unpredictable paths as they travel from locat...

Marine phytoplankton changes form to protect itself from different predators

...ile, it’s like changing from a mosquito to 76 blue whales or 3,000 bull elephants,” Hay explained. “That’s a pretty dramatic difference.” Defensive responses are often seen in higher plants, but this is believed to be the first report of such a complex and species-specific response in marine phytoplankt...

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