In normal times, Europe's brown bears live in a state of happy equilibrium. But under certain circumstances, things can go seriously awry, leading the males to commit what researcher Robert Wielgus calls sexually selected infanticide. Wielgus's most powerful tool against this eventuality is math.
» More ...Between 1995, the year before Washington banned the hunting of cougars with hounds, and 2000, the number of human-cougar encounters nearly quadrupled. Although encounters have returned to pre-ban levels in some areas, the public perception is that cougars are making a comeback--and must be stopped. But Hillary Cooley and Rob Wielgus insist that much of what we think we know about cougars is wrong. And their argument rests with the young males.
» More ...Whatever its impact on trade, the World Trade Organization has opened the doors to biological invasion, says Dick Mack. A professor of botany at Washington State University, Mack is a leading authority on invasive species and lead author of Predicting Invasions of Nonindigenous Plants and Plant Pests, a report recently published by the National Research Council.
Invasive species are those that are introduced, whether deliberately or not, only to find their new home much too accommodating. Whereas a plant might be an inconspicuous face in its home crowd, it could become the ubiquitous bully in a new ecological crowd with no defense against its aggressiveness. … » More …
For as long as Jami Hinshaw can remember, she has coughed, sneezed, sniffled, and felt miserable every September. When she was nine, the Spokane native and WSU alum was diagnosed with asthma.
Last fall, Hinshaw was fighting her usual symptoms, but she was also carrying a portable air quality monitor in a backpack as part of a study to better understand the health effects of agricultural field burning. Researchers from Washington State University are working with their counterparts from the School of Public Health at the University of Washington to examine volunteers’ exposure levels to atmospheric pollutants coming from field burning in the region.
Controversy … » More …
Christine Portfors, a neurologist, tends a lair of 23 tropical moustache bats at WSU Vancouver in order to tease apart the question of how they distinguish between sounds-for example, between those they use for echolocation and those they use to communicate.
Bat communication sounds, like speech sounds, are very complex in terms of frequency and timing, says Portfors. Beyond that, “We don’t know anything about how the brain actually processes those types of sounds.”
Earlier work by Portfors revealed that bats have neurons that are very sensitive to the timing of the echolocation sound, between when they emit it and when the echo comes back. … » More …
Ah, for the safety and comfort of computer modeling in a cozy office.
Instead, Thanos Papanicolaou, assistant professor in the Department of Civil and Environmental Engineering at Washington State University, found himself in a small boat in the churning waters of the Tacoma Narrows during a “peak tidal event” taking water velocity measurements, soundings, and underwater pictures of the bottom of the channel.
“I was a little nervous,” he admits, recalling his guide’s efforts to avoid vortices in the current.
Papanicolaou and graduate student Kyle Strom have been working to determine exactly how much of a scour hole tides make around the pilings that hold … » More …
WASHINGTON STATE apple growers have a problem. The honey bees that pollinate their trees can be a little wimpy when it comes to temperature.
Apple growers prefer to have the king, or primary, blooms pollinated, because they produce the biggest apples. But all too often, the trees bloom during cool weather. And the resident honey bees, being mostly of Italian descent and therefore partial to Mediterranean weather, hole up when the temperature dips below 55 degrees F.
Other bees do better in cool weather but often have quirks of their own that limit their usefulness as pollinators.
So Steve Sheppard—associate professor of entomology at Washington … » More …
Hunting may create cougar problems
IF THE COUGAR IS ANYTHING like its fellow carnivore the grizzly, then the method we’re using to try to solve our current problems with cougars may well aggravate rather than alleviate them.
Rob Wielgus, director of the Large Carnivore Conservation Laboratory at Washington State University, turned the Canadian wildlife management world upside down with his graduate and postgraduate research showing that trophy hunting of grizzly bears in the Kananaskis region of Alberta was neither beneficial nor benign to the resident population. His work indicated that trophy hunting would lead to the extinction of the grizzly population in 15 to 20 … » More …
AS YOU MIGHT WELL IMAGINE, artificially inseminating an elephant is a touchy business. But, says Janine Brown, artificial insemination (AI) is an important tool, because natural reproduction can be difficult for captive elephants. Bulls are dangerous to keep, there aren’t many of them around, and transporting the females to where the bulls are is both stressful and expensive.
Brown, who completed two degrees in animal science (’80 M.S., ’84 Ph.D.) at Washington State University, is the senior endocrinologist at the Smithsonian Institution National Zoological Park in Washington, D.C. There, in late February 2000, she coordinated the successful artificial insemination (AI) of Shanthi, a 24-year-old … » More …
IF GARY MEADOWS is right, popping Prozac will do more for you than relieve depression. Meadows’s preliminary data suggest that fluoxetine, the generic form of Prozac, inhibits the growth of melanoma tumors in mice.
The Prozac project began about two years ago in collaboration with neurophysiologist Tanja Obradovic, then at Washington State University. Obradovic and Meadows, who is Dorothy O. Kennedy distinguished professor and director of WSU’s Cancer Prevention and Research Center in Spokane, knew that melanoma cells not only make the neurotransmitter serotonin, but also have receptors for it. A receptor is a site on a cell that binds with substances such as … » More …