Tag: "extinct" at biology news
Disappearing nest egg: Researcher studying declining numbers of macaws
...ws, and of those, 1 is extinct, another has become extinct
in the wild and 7 other species are endangered. "The numbers for all macaw species are shrinking," he says. There are several reasons for their declining numbers. The birds are highly prized by the pet trade industry, and they are losing their nati...
Biodiversity controls ecological 'services,' report scientists in comprehenisive analysis
...xt 100 years, and that currently species are going extinct
at thousands of times faster than they have historically. The losses are due to the cutting down of rainforests, development, pollution, and the introduction of exotic species that take over the niches of indigenous species. "Our study shows that ...
Modeling alien invasions: Plasticity may hold the key to prevention
...st by invading new habitat patches even as they go extinct
Fossils of ancient sea monster found in Montana
...in one day. Horner said the new fossils come from extinct
animals that lived in a seaway that once existed where Montana is today. Partly because of its significance, he plans to send three extra paleontology crews into the field next summer. One of them, a "wandering crew," will be devoted to the site whe...
Decoded sea urchin genome shows surprising relationship to man
... every human gene and build a picture of what the extinct
ancestors that gave rise to animal life from worms to humans looked like. Although invertebrate sea urchins have a radically different morphology from humans and other vertebrates, their embryonic development displays basic similarities, an importan...
Decoded sea urchin genome shows surprising relationship to humans
...every human gene - and build a picture of what the extinct
ancestors that gave rise to animal life from worms to humans looked like. "More than 30 years ago Roy Britten and Eric Davidson offered a comprehensive theory of gene regulation in higher organisms and the sea urchin has been the premier model for t...
A buffet for early human relatives
...hat has been used to explain why Paranthropus went extinct
as Africa became drier, while tool-wielding Homo with a highly varied diet survived and evolved. The new study casts doubt on that theory by showing that Paranthropus, like Homo, also consumed a variety of foods. "Thus, other biological, soci...
Global warming increases species extinctions worldwide
...tats and will continue to cause more species to go extinct
over the next 50 to 100 years, confirms the most c...n born out. The most sensitive species are going extinct
and/or shifting their ranges geographically as their original habitats become inhospitable. The stud...
Neanderthal genome sequencing yields surprising results and opens a new door to future studies
The veil of mystery surrounding our extinct
hominid cousins, the Neanderthals, has been at lea...gists will be able to develop hypotheses about our extinct
ancestors through the scanning of billions of base pairs of DNA sequences available on the web rathe...
A human taste for rarity spells disaster for endangered species
...ies, their prices soared. The turtle is now nearly extinct
and the gecko can no longer be found in its southeastern China niche. Even well-intentioned activities like ecotourism may destabilize threatened populations. How to conserve biodiversity when simply declaring a species endangered catalyzes its exp...
Ancient predator had strongest bite of any fish, rivaling bite of large alligators and T. rex
... on four rotational joints working in harmony. The extinct
fish had the strongest bite of any fish ever, and one of the strongest bites of any animal, rivaling the bites of large alligators and Tyrannosaurus rex. Thus Dunkleosteus was able to feast on armored aquatic animals that also lived during the De...
Small, smaller, smallest -- The plight of the vaquita
...destined to become the first marine cetacean to go extinct
in modern times because of anthropogenic factors" How can this sad prospect be prevented" The small number of porpoises in the current population cannot be expected to withstand continuing incidental mortality. This needs to be eliminated. However, p...
Ebola-outbreak kills 5000 gorillas
...n efforts. Ebola has not totally made apes totally extinct
from these areas but it has pushed once huge populations down to smaller sizes at which they are dramatically less resilient to illegal hunting and other looming threats. Just as troubling are recent studies showing that the Ebola infection wave is...
Dental crowns reveal the diet of a species
...rements enable scientists to determine the diet of extinct
animals even in taxonomic groups that have no coun... to evolutionary scientists, who study the diet of extinct
species based on the shape of their molars. This new approach also creates opportunities for studyin...
Too mellow for our predatory world
...re a first indication why tame animals have become extinct
in many continents but also provide fresh arguments for conservation biologists. For in the meantime, the government of Ecuador has opened the UNESCO world heritage site of the Galápagos Islands to the cruise ship market. With growing mass tourism, ...
Saving endangered whales at no cost
...xtinction remains a threat. The whale is virtually extinct
in Europe, but a small population of about 350 individuals remains on the east coast of North America. A leading threat to the species is lethal entanglement by fishing gear: Photographic evidence indicates that 75% of individuals show signs of entan...
Why are lions not as big as elephants?
...res are relatively small compared with the largest extinct
terrestrial herbivorous mammals, such as the Indri...is only around half a ton, while the largest known extinct
carnivores, such as the short-faced bear, weighed around one ton. The authors also note that the lar...
Big vegetarian mammals can play a critical role in maintaining healthy ecosystems, study finds
...ughout Africa and worldwide, and have already gone extinct
in many places. Our results suggest that these dec...res, and that although many of these cascades went extinct
at the end of the Pleistocene along with the large herbivores that caused them, their legacies may w...
Paleontologists discover most primitive primate skeleton
...sil specimens representing more than 85 modern and extinct
species. The team also discovered two 56-million-year-old fossils, including the most primitive primate skeleton ever described. In the two-part study, an extensive evaluation of skeletal structures provides evidence that plesiadapiforms, a group of...
2007 AAAS Annual Meeting Headlines
...on brain function Efforts to revive threatened or extinct
languages Lost memories from infancy And much more. The climate-change town hall, featuring experts such as Lonnie Thompson of Ohio State University, Margaret Leinen of Climos Inc., Amory Lovins of the Rocky Mountain Institute, and Robert Socol...
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