Tag: "mammal" at biology news

How a little bit of cold can kill a big manatee, and what it might mean for the species

... Dr. Bossart, who has studied both clinical marine mammal medicine and pathology and human pathology. In the study, investigators performed necropsies--the animal form of an autopsy--on 12 manatees thought to have died from cold stress syndrome during the exceptionally harsh winter months between November ...

Museum mammal collection network to aid conservation and research

...l allow simultaneous electronic access to members' mammal collection databases. The network, called MaNIS (...can isolate historic shifts in the distribution of mammal populations and document the impact of changing habitats or climate. --Tracking emerging diseases. M...

Seeking the cause of a mysterious whale disease

... The workshop will bring together human and marine mammal researchers in an effort to better understand caus...ion Division, who has studied both clinical marine mammal medicine and pathology and human pathology, will lead the workshop. Other experts involved will inc...

Birds do it. Bugs do it. But why don't we?

...heromones to find a suitable mate. Even our humble mammal cousin, the mouse, was found to have 140 genes just for pheromone receptors when its genome was completely sequenced earlier this year. But humans are clueless when it comes to pheromone signals, according to University of Michigan evolutionary biol...

Monogamous animals may be more likely to die out

...ow to save them. Since 1970, more than half of the mammal populations in Ghanian reserves have become locall...ndance and how much people like to eat them) in 41 mammal species (9 primates, 24 ungulates and 8 carnivores). After accounting for the effect of reserve size...

Mouse study suggests mammoth evolutionary change

... are the first report of such quick evolution in a mammal and appear in the May 22 issue of the journal Nature. Oliver Pergams, a conservation biology researcher with the Chicago Zoological Society in Brookfield, Ill. and visiting research assistant professor at UIC, conducted the research as his Ph.D. the...

DNA from dung

... our own eyes, including the most endangered large mammal in the world, the Javan rhino," said Melnick, who is also the executive director of CERC. Studies in the CERC lab have found that non-invasive DNA extraction from dung works on other mammals, including rhinos, apes, monkeys, and canids, as well as o...

Gametes and embryos from mammalian stem cells: religious and ethics perspectives

... or practice. Clearly one can begin the life of a mammal without fertilization. This would apply to humans as well, though this is a theoretical possibility at present. Thus if one holds that fertilization or conception signals the or is the presumptive beginning of a human person, as for example the Vati...

Roadsigns for rodents

...sophisticated behaviour has been identified in any mammal excepthumans. According to the authors, This is precisely how a human might tackle the problem ofsearching efficiently in a homogeneous environment for exampleby placing a cane in the ground as a reference point from whichto search for a set of keys...

Indiscriminate nursing in communal breeders: A role for genomic imprinting

In several communally nesting mammal species, females indiscriminately nurse each others' offspring. Previous hypotheses have suggested that the inability to recognize one's own young during lactation is the result of costs incurred by recognition errors. In an article to appear in the ...

Alaska oil and gas exploration good and bad for area life

...c.) have been observed. As a result, some bird and mammal species have been negatively impacted.Kennicutt said the committee attempted to predict future accumulations of effects based on realistic scenarios of oil and gas development over the next 25 years including: *The effect of declining revenues. "The...

Researchers help trace origin of Madagascars mammals

...clocks" according to dates of separation for other mammal lineages that have been established by the fossil ... "This study will shed light on other questions of mammal dispersals elsewhere, such as how monkeys and rodents got from Africa to South America some 35 milli...

Innovative research with pythons offers new insights into the body's digestive processes

...erall gastrointestinal response is twice that of a mammal laboratory animal, making this species ideal for s...y conclusions reached would have to be tested in a mammal subject). Mice, rabbits, rats, and dogs have all served science by taking their place as mammalian m...

Early mammals used pelvic bones to trot, study finds

...y. Epipubic bones have been found in the earliest mammal fossils and remain in some of the marsupials still living today, and scientists had long thought they supported the animals' trademark pouch. If that were the case, the bones and attached muscles would move together on one side of the body when the ...

Wildlife researcher captures jaguars with camera

...tahs. She has also conducted a survey of the small mammal diversity and abundance in the Chiquibul Forest. Recently, Kelly spoke to the San Francisco Exploratorium using satellite technology to conduct a series of live webcasts from the remote field site in Las Cuevas, Belize. The studio audience and anyon...

New mammal species identified in Australia

...e mountain brushtail possum, an arboreal marsupial mammal of Australian wet forests, is actually made up of two species also poses new conservation challenges. The new possum species is proposed in an article in the latest Australian Journal of Zoology (Volume 50, Issue 4), authored by Earthwatch-supported ...

Large-scale climate change linked to simultaneous population fluctuations in arctic mammals

...an synchronize population fluctuations in multiple mammal species across a continent-scale region. The study, to be published in the 14 November 2002 issue of the journal Nature, compares long-term data on the climate system known as the North Atlantic Oscillation with long-term data from Greenland on the ...

European seal plague may threaten population survival

...k in 1988 was the largest such event in any marine mammal population. The authors used mathematical models to compare the 2002 findings to the 1988 outbreak, and predict the 2002 event will have similar impacts on the harbour seal population. As many as 10,000 seals will die from PDV in 2002 in Denmark an...

Key sensory proteins unveiled in mosquito genome found by Illinois entomologist

...and gustatory receptors help mosquitoes find their mammal hosts," Robertson said. "We know that mosquitoes can detect a whole bunch of chemicals that we humans release whether we like it or not, such as carbon dioxide and lactic acid. We don't have a choice; we release them and they take advantage of that...

Tagging the great white shark...and a few of his friends

... of the ocean is a daunting task," says ONR marine mammal expert Robert Gisiner. "But, this program is going to allow us to study the movements of these animals both spatially and temporally at resolutions previously unknown."...

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