Tag: "whales" at biology news
Marine phytoplankton changes form to protect itself from different predators
...hile, its like changing from a mosquito to 76 blue whales
or 3,000 bull elephants, Hay explained. Thats 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 phytoplankton. ...
Study helps preserve Arctic whale, Eskimo subsistence hunt
...ion ruled last week to allow Eskimos to harvest 56 whales
per year, the same quota that had been in place bu...lar Ecology, measured genetic variation of bowhead whales
in order to shed light on the animal's population makeup, or stock structure. This information is vi...
Bigger is smarter
... have larger brains. And, of course, elephants and whales
possess larger brains than we do, yet it's hard for us to imagine that they are smarter than we are."...
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 th...
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 Univ...
Dinosaur hearing, listening to muscle noise, quieter cubicles
...CATCHING 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 scientists monitor longest mammal migration
...ence journal, biology letters, that found humpback whales
migrate over 5,100 miles from Central America to t...udy validates a long held assumption that humpback whales
travel to warm water areas during the winter. "It was very exciting because for years everyone s...
Tracking sperm whales and jumbo squid
...scientists reports the successful tagging of sperm whales
and jumbo squid swimming together off Mexicos Paci...bout the diving behavior of both species. "Sperm whales
(Physeter macrocephalus) and jumbo squid (Dosidicus gigas) are both major predators that spend much ...
Antarctic marine explorers reveal first biological changes after collapse of polar ice shelves
... behavious of marine mammals, which included Minke whales
close to the pack ice edge and very rare beaked wh...such a new habitat was used and colonized by Minke whales
in considerable densities," says specialist Dr. Meike Scheidat of Germany. "They indicate that the ...
Neuroscientist Robert Sapolsky will discuss stress, health, Feb. 17 at AAAS meeting
...depression." The same may be true for elephants, whales
and other highly intelligent mammals that have complex emotional lives, he added. "The reason baboons are such good models is, like us, they don't have real stressors," he said. "If you live in a baboon troop in the Serengeti, you only have to work...
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 tha...
Four Arnoux's Beaked Whales observed from Polarstern expedition
...were probably 9 metre long. These deep-sea feeding whales
are particularly sensitive to underwater acoustic disturbances. The pictures showed a whole array of scars on their skin, which are already under investigation. Some of these scars could have been inflicted by orcas, their potential predators, or by ...
Contrary to common wisdom, scientist discovers some mammals can smell objects under water
...degenerates. 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 ...
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...
Blame our evolutionary risk of cancer on body mass
... to keep its risk of cancer at bay?"It may be that whales
have a cancer suppressant that we've never considered," says Gorbunova. "I'd like to find out what kind of telomerase expression they have, and find out what else they use to combat cancer." As for the tiny mice: "They don't have to worry about cance...
Reef sharks threatened by overfishing
... Reef sharks mature late in life, and, like many whales
and dolphins, produce very few offspring, notes Mizue Hisano, a co-author of the study. This makes it hard for them to bounce back from even low levels of fishing, such as poaching in green zones. The study highlights the importance of ensuring hi...
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...
Marine life stirs ocean enough to affect climate, says FSU study
...ming motions of hungry ocean swimmers ranging from whales
and fish to shrimp and krill. Those swimming motions mix the water much as cream is stirred into coffee by swiping a spoon through it. And the sum of all that phytoplankton-fueled stirring may equal climate control. "By interpreting existing dat...
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...
3rd Annual AIBS, BSCS, NESCent Evolution Science and Education Symposium
...earch team was the first to find skeletons linking whales
to artiodactyls land mammals. Additionally, Dr. Gingerich is interested in understanding how evolutionary processes over generations yield microevolutionary and macroevolutionary patterns observed on longer historical and geological scales of time. ...
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