Filed under: Uncategorized
A captive bred Darwin’s frog is held by a researcher shortly after it was coughed up from its dad’s vocal sac. Ten baby frogs were coughed up at a breeding facility in Chile on Thursday.
A captive male Darwin’s frog coughed up ten babies Thursday at a zoo in Santiago, Chile, a milestone in a project to save the amphibians from extinction.
The vulnerable species is one of two members of the only genus on Earth that rears its young inside of its vocal sac, a job taken on by the males.
“They have a small opening below their tongue. … After [the eggs] hatch, he takes the tadpoles into his mouth and manipulates them through that opening and into his vocal sac,” Danté Fenolio, a conservation scientist with the Atlanta Botanical Garden, explained to me today.
“For about 60 days, they go all the way through to development inside his vocal sac. At that point when they are ready, fully developed, he coughs up fully formed miniatures of the adult.”
Fenolio is working on a captive breeding project with the National Zoo and Universidad Catolica in Santiago to build a so-called assurance population of the frogs that can be released into the wild once, or if, environmental threats to their natural habitat are thwarted.
The babies coughed up Thursday are the second batch produced by the frogs, a sign that the project is meeting success.
The frogs are native to the southern temperate forests of Chile and Argentina, which have been isolated from the rest of the world since the dinosaur age due to a surrounding geography of mountains, desert and ocean.
This region receives enough rainfall to classify as a rainforest, which makes it ideal for amphibians. But it’s also ideal for vineyards and plantations of radiata pine, a fast-growing tree highly valued for the country’s lumber and pulp and paper industries.
“Those two things have driven a lot of these southern Chilean amphibians to extinction,” Fenolio said.
In addition, the chyrtrid fungus, which has devastated amphibian populations around the world, recently arrived to southern Chile and could easily wipe out populations there as it has elsewhere.
Yet another threat to some species of frogs in the region are invasive trout introduced to rivers and streams to support Chile’s rising status as a world-class fly fishing destination. The trout eat tadpoles, though not those of the Darwin’s frogs since they are safely inside dad’s vocal sac.
A captive breeding facility to raise assurance colonies of frogs at a lab in Santiago, Chile. Researchers are currently raising Darwin’s frogs. They hope to secure funding to raise more of the country’s endangered amphibian species.
“It is a very complicated conservation landscape,” said Fenolio, who hopes to secure funding to establish captive breeding populations for Chile’s other endangered amphibians and build up assurance colonies.
“An assurance colony doesn’t fix the problem in the wild. What you are trying to do is buy yourself some time,” he explained.
While addressing some of the threats could be a decades-long process with tough battles against well-established industries, others are relatively simple and straightforward, albeit costly.
For example, populations of some amphibians such as the false mountain toad could be protected by eliminating invasive trout from a stream and putting in fish exclusion devices downstream from them.
“That’s been done in before in various areas around the world and it would be a relatively simple effort,” Fenolio said.
One more threat, though, looms on the horizon. The Chilean government recently approved the construction of a series of hydroelectric dams in the amphibian zone. The dams will bring inexpensive electricity, but they come at a cost.
“Whenever you put a dam in, the habitat behind it is flooded and destroyed,” Fenolio noted. “These construction projects will impact the amphibian populations of southern Chile negatively, there’s no question.”
More stories about frogs:
- Fungus hitting frogs hard
- Scant froggy finds spark worries
- Froggy finds raise hope for Haiti
- Social networking to save frogs
John Roach is a contributing writer for msnbc.com. Connect with the Cosmic Log community by hitting the “like” button on the Cosmic Log Facebook page or following msnbc.com’s science editor, Alan Boyle, on Twitter (@b0yle).
Filed under: Civil Rights
Reported by: Jamie Oberg Email: firstname.lastname@example.org
May 31st – the anniversary of a sad day in Tulsa’s history; it’s the 90th anniversary of the race riots.
After sixteen hours of attacks, hundreds were injured and nearly 10,000 people were left homeless.
A candlelight vigil will be held Wednesday night from 7:30-8:30 p.m. at John Hope Franklin Reconciliation Park in downtown Tulsa.
Fox23’s Jamie Oberg spoke with one local author who told the story of the Race Riots many had never heard.
“Recognize it happened, don’t let it happen again.”
As Tulsa remembers the Race Riots in the Greenwood District 90 years ago, author and native Tulsan Eddie Faye Gates remembers why she authored a book explaining what happened so long ago.
“Just hanging people, hanging people based on nothing but color,” Gates said. “A lot of the survivors are very bitter and didn’t want to hear from you all.”
A lot of the survivors are gone now, but Gates tries to tell their stories from 1921.
“Now they know a lot of people just simply didn’t know, what was going on…good people who didn’t know.”
For decades, what happened here was covered up and not taught to younger generations in Oklahoma.
“People were ashamed in Tulsa about the race riot of 1921, race itself was covered up,” Gates said. “There were good people who knew this wasn’t good and there were others who would shoot them down like they were nothing.”
Gates tells us it’s not too late to tell the story so it never happens again. “I wanted to tell the truth it wasn’t known, people were shocked people didn’t know about the riot,” she said. “Now everybody is so sad it happened can’t do enough to help. What can we do to help? Get the whole story and get it out there.”
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