Showing posts with label Links. Show all posts
Showing posts with label Links. Show all posts

Monday, November 22, 2010

All hopped up: City links for Toad revival

The locals of Beatty, Nev., brought back the Amargosa toad from near extinction and kept the species off the endangered species list.


A small environmental miracle has occurred in Beatty, Nev., a former mining town that sits on the eastern edge of Death Valley between Jackass Flats and Sober Up Gulch. The people of Beatty have helped revive the Amargosa toad, a warty, speckled, palm-sized creature that's unique to the area and, just a few years ago, seemed headed for extinction.


But this is not your typical story of environmental action — the toad owes its comeback to an unlikely coalition that includes ranchers, miners, off-road racers, opponents of big government and the local brothel.


Volunteers sort through buckets of Amargosa toads in Beatty, Nev., to see which have been tagged with tracking markers. They work at night when most toads come out of hiding.

Jon Hamilton/NPR Volunteers sort through buckets of Amargosa toads in Beatty, Nev., to see which have been tagged with tracking markers. They work at night when most toads come out of hiding.


The toads come out at night, and twice a year around June, so does a team of volunteers assembled by the Nevada Department of Wildlife to count them. Shuffling through a cattle pasture armed with buckets and flashlights, Brian Hobbs, an amphibian biologist with the state, leads a group in gathering the toads. They live anywhere there is water.


Even though the area around Beatty is desert, there's quite a bit of water, thanks to natural hot springs and a fitful creek known as the Amargosa River.


The volunteers place an electronic tag under the skin of any toad that doesn't already have one. It's quiet work — female toads are silent and so are the males, unless they're being mounted by another male or squeezed by a scientist.


One toad receiving a tag gives his "release call," then urinates copiously on the tagger. That gets a big laugh from the other volunteers.


After more than an hour in the pasture, though, the team has found only nine toads. So they head down to the house where David Spicer, a rancher, lives with his family. Spicer comes out to greet them and announces that his yard is packed with toads.


"When we go over by this light, we're going to really all need every one of us," Spicer says as he takes the group toward one of his outbuildings. "There's like 50 to 60 that'll be over there. An enormous amount of them. We're like toad farmers around here."


Volunteers collected this bucket of Amargosa toads, lit here with a headlamp, during a nighttime search. The population of toads has rapidly recovered from near extinction just a few years ago.

Jon Hamilton/NPR Volunteers collected this bucket of Amargosa toads, lit here with a headlamp, during a nighttime search. The population of toads has rapidly recovered from near extinction just a few years ago.


Spicer's right. The volunteers have hit the toad mother lode. Pretty soon their buckets are full and release calls fill the air.


Protecting Toads To Keep Private Land Private


"What you're seeing tonight are the results of active land management, active habitat management," Spicer says


He has run miles of underground pipe around his property to create breeding pools and wet habitat for the toads. Spicer grew up with the toads and wants to preserve them, he says.


But here's the surprising thing: Another reason, and perhaps the major reason Spicer has gone to such lengths is because he really, really does not like the Endangered Species Act.


"Nobody trusts the government anymore," Spicer says. "Nobody wants to work with the government. The government always wants to take something from you."


So Spicer got worried more than a decade ago when some scientists declared that there were only a few dozen Amargosa toads left. Soon after that, when a group petitioned the federal government to add the toad to the endangered species list, Spicer came up with a plan.


Twenty-four species of animals and plants in the Ash Meadows National Wildlife Refuge near Beatty, Nev., are threatened or endangered as a result of the introduction of invasive species, ranching and excessive water use. Below are photos of a sampling of them.


"You need to defend yourself against such actions like that because that's not a good thing to have happen," he says.


Spicer feared the government would try to protect the toads by telling him he couldn't raise cattle or ride off-road vehicles on his own property. So he helped start a group called STORM-OV, which stands for Saving Toads thru Off-Road Racing, Mining and Ranching in Oasis Valley.


STORM-OV has worked with the government, groups like the Nature Conservancy and with locals who just want to save the toad.


"We want to keep it in our hands, where it's at a local level, where we can do things and be nimble," Spicer says. "You get restricted by bureaucracy, the monstrous, litigious things that go on in the Endangered Species Act, and we're definitely not going to have any fun on our own ranches anymore."


The group has persuaded land owners to make their properties toad-friendly. They've also worked to get rid of non-native animals like bullfrogs and crawdads, which eat toad eggs and tadpoles, and invasive plants like tamarisk and cattail that clog the springs where toads live.


Toad Tourism?


Other people in Beatty see toad preservation as a way to revive their town.


Kay Tarr is a retired schoolteacher who sits on the Beatty Habitat Committee. To the flock of kids who always seem to be scampering through her doublewide, she's known as Grandma Kay. Tarr likes to give tours of Beatty in her golf cart — a spinal tumor left her unable to work the brake and accelerator pedals with her feet, so she uses the tip of a cane.


"That used to be the casino over there, and oh it was a fun place, before our town died," she says, driving down the main street toward Beatty's only stoplight.


"We used to have street dances out here in the parking lot," she says. "Bands up on the trucks. Everybody dancing in the street. They even made me get out there and dance in my wheelchair."


Beatty was home to more than 2,000 people when the Bullfrog gold mine was still operating a few miles away. Now there might be half that many.


But Tarr and other members of the Habitat Committee think the Amargosa toad could revive Beatty. Their plan is to create a nature trail along the stretch of Amargosa River that runs through town.


"See those benches and the trash cans," she says bumping along a dirt path next to the river. "We'd like to put those all along the riverbed. And this right here is where we'd like to start our trail."


The idea is that an attraction featuring the Amargosa toad would encourage visitors to stay just a little longer. And that idea has gained some traction among residents.


"It's been slow and it's been tedious and it's been frustrating," says Shirley Harlan, who lives outside Beatty and is president of Friends of the Amargosa Toad. "But within the past, I'd say, three years, have we gotten the public educated sufficiently to realize that [the toad] is an asset?"


Angel's Ladies, a licensed brothel near Beatty, Nev., is toad-friendly: The swimming pool isn't chemically treated and "we don't bother [the toads]," says Tom Arillaga, who helps maintain the buildings.

Jon Hamilton/NPR Angel's Ladies, a licensed brothel near Beatty, Nev., is toad-friendly: The swimming pool isn't chemically treated and "we don't bother [the toads]," says Tom Arillaga, who helps maintain the buildings.


A Toad-Friendly Brothel


That message has clearly reached Angel's Ladies, a licensed brothel just up the road. The brothel is run by a couple who used to be in the funeral home business. It even has its own airstrip, complete with the carcass of a twin-engine plane that crashed while landing there more than 30 years ago.


"Here, I'll show you one of the bungalows," says Tom Arillaga, who helps maintain the collection of small buildings that comprise Angel's Ladies.


"We have two of these bungalows, plus every girl has their own room decorated, you know, for customers," he says


The brothel is toad-friendly, right down to the clothing-optional swimming pool out back, Arillaga says.


"We don't bother them or anything like that," he says "The pool is not chemically treated, so they go in the pool and their eggs wash down the creek here, and then they hatch along the creek.


Arillaga adds that most swimmers seem to like the toads.


"There's are a few of them up there I've named," he says. "Big fat ones that come out when I come up here at nighttime and swim, and they'll just come right up to me, and I sit there and I talk to them, and they look at me like I'm their friend, you know. They're kinda cute."


It's a quirky kind of environmentalism. But it seems to be working. This year's toad counts show that their numbers remain in the thousands. And earlier this year, the U.S. Fish and Wildlife Service rejected the latest petition to place the Amargosa toad on the endangered species list.


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Friday, July 9, 2010

Research Links Parasite In Cats To Mental Illnesses

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What microorganism can make mice attracted to cats or make humans more likely to have car accidents or even develop a mental illness like schizophrenia? Host Guy Raz talks with infectious disease researcher Robert Yolken about Toxoplasma gondii and how it might affect human behavior.

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GUY RAZ, host:

If you or someone close to you has ever been pregnant, you've probably heard that pregnant women shouldn't change cat litter. That's because of a parasite some cats carry. It's called Toxoplasma gondii. Humans can become infected by handling cat litter. And if a pregnant woman becomes infected, toxoplasmosis can cause brain damage to the fetus.

Well, now, a growing body of research is connecting toxoplasma to mental illness in adults, things like schizophrenia and bipolar disorders.

Dr. Robert Yolken from Johns Hopkins Children's Center has been studying the parasite's connection to mental illness. And he joins me from Baltimore.

Welcome to the program.

Dr. ROBERT YOLKEN (Neurovirologist, Johns Hopkins Children's Center): Thank you very much.

RAZ: First of all, how did cats themselves get infected with the parasites?

Dr. YOLKEN: You know, I should say for toxoplasma's point of view, the world is divided into two parts. So it's cats or non-cats. Toxoplasma would like to be in a cat. The cat is where it can complete its life cycle, can undergo sexual reproduction. So that's really where it wants to be.

Now toxoplasma gets into another animal, it's still alive, but it's not very happy. What I'm fond of saying is it's kind of like a young person living in New Jersey. The person is alive, but perhaps would rather be somewhere else...

(Soundbite of laughter)

Dr. YOLKEN: ...so in New York City or Philadelphia or Washington. Somewhere...

RAZ: Apologies to our listeners in New Jersey.

Dr. YOLKEN: I'm from New Jersey and my wife is, so I hope my fellow New Jerseyans won't mind my poking fun of my own state. But if you're a toxoplasma organism, you can't move so you have to change the motion of your host. And it appears that what toxoplasma does is it actually changes the behavior of a host so it's more likely to get into a cat.

And how does it does this? Well, if a toxoplasma happens to be in a mouse or a rat, what it does is it actually alters the behavior of the road in quite a specific way to make it more likely to get eaten by a cat. And it does this by actually having the animal lose its fear of cats and actually get attracted to cats. So this is a quite amazing effect of a parasite on animal behavior.

RAZ: Now, when humans are infected with this parasite, you have found a correlation between toxoplasmosis and changes in human behavior. Tell us what you found.

Dr. YOLKEN: Basically, we found that having toxoplasma raises the risk of schizophrenia about twofold compared to the rest of the population. Toxoplasma probably functions through a pathway called dopamine. We know that dopamine is abnormal in schizophrenia, but the reason why it's abnormal is not really completely clear.

Another behavior which appears to be altered is the individuals with toxoplasma appear to take more risks in terms of driving a motor vehicle and also being a pedestrian.

RAZ: Obviously, a lot of people listening to this who have cats - myself included - and small children might be a little bit terrified. What does this mean for people who own cats? I mean, should they keep their kids away from them?

Dr. YOLKEN: No. I have cats. I have two, one that's ours and one that's our daughter's that we're cat-sitting for while she's in college. And I think cats are wonderful pets and I would encourage people adopting cats. I think there are a number of things that one can do to lower the risk of toxoplasma.

One is a cat that's kept indoors is much, much less likely to get infected because it's not going out and eating rodents that might be outside. Secondly, I think that individuals who do have a litter box should be careful in terms of changing the litter and wearing gloves.

RAZ: How would you know if your cat had it?

Dr. YOLKEN: A veterinarian can generally do a test for a cat, and I'm told by my own veterinarian that that's not an uncommon request for people.

RAZ: So do your cats have it?

Dr. YOLKEN: My cats do not have it.

RAZ: So you don't have it probably.

Dr. YOLKEN: No. I am toxoplasma positive. So it's largely a silent infection. There are some symptoms - a headache, people not feeling well - but these usually resolve. So most people that have toxoplasma would not really have any reason for knowing it.

RAZ: That's Robert Yolken. He's professor of pediatrics and researcher at Johns Hopkins Children's Center in Baltimore.

Dr. Yolken, thanks so much.

Dr. YOLKEN: Thank you very much.

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