Isolated Amazon Tribe Makes Contact With Scientists
Stuart V. Nielsen
The cocoa frog is one of six new frog species that were recently found in a rainforest-dominated mountainous region of southeastern Suriname. “At a time when so many frog species are declining and undergoing extinctions worldwide, it is particularly uplifting to discover so many new frogs in a single area,” Trond Larsen, a tropical ecologist and director of the Rapid Assessment Program at Conservation International, told Discovery News. He and his team found about 60 new species in the South American country.
The tiny Lilliputian beetle measures just 2.3 mm long and could be the smallest dung beetle in the entire Guiana Shield and among the smallest in the world. “Dung beetles act as a cleanup crew in the forest,” Larsen said. “By burying dung, they not only control parasites and disease, including those that affect people, but also disperse seeds and recycle nutrients that enable forest regeneration.”
Leeanne Alonso, director of Global Biodiversity Exploration for Global Wildlife Conservation, went on the expedition with Larsen. She thinks this beetle might be small and red to look like a seed stuck in poo, thereby fooling predators. “Dung beetles in forest areas are a good indicator of mammal diversity,” she added. Without mammals providing their food source, there would be few such insects.
Stuart V. Nielsen
The collection of new animals includes 11 species of fish that are probably new to science. “Small, brightly-colored tetras similar to this one are popular in the aquarium trade, and sustainable exports of wild species could provide financial support to local communities and incentives to conserve the species’ natural habitat,” Larsen said.
Alonso added that, as new species go, fish are relatively rare. “It’s amazing that so many were found in this region, which I believe has the world’s best and most beautiful and pristine forests in the world.” She loved it so much that she took her family there on a vacation after the research work ended.
Bats are another “good indicator of habitat quality,” Alonso said. She explained that, in this case, the bat thrives on fruit, so the region must support plenty of healthy fruit-producing trees.
Genuine coral snakes are highly venomous, but this false coral snake’s name is itself somewhat misleading, as the researchers found out the hard way. Alonso said that a helicopter pilot transporting the scientists was bitten by one. “His arm really swelled up,” she said, explaining that all such snakes have sharp teeth and venom, just not as poisonous as the “real” coral snake this species resembles.
This extraordinary new insect displays waxy fronds at the end of its body that was built for jumping among plants. “Maybe the fronds are meant to resemble anthers of a flower, helping with camouflage?” Alonso said, admitting that nature sometimes works in still-mysterious ways. She continued, “So little is known about insects from this region, so this was a real find.”
Top-level predatory big cats, such as this margay, are yet another sign of healthy habitat. More of them generally means there are more prey animals to feast upon. “Margays love to sleep and hide in caves at the site,” Alonso added.
Six new katydids, including this one, were discovered. Larsen described it as a “gangly species with oversized, spiny hind legs.” The newly discovered katydids "are indicative of the pristine, healthy forests of the Upper Palumeu Watershed," Larsen said, "and the forests in turn help to ensure continued flows of clean, plentiful water used by people throughout the rest of the country.”
“Despite their generally diminutive size, water beetles can be useful indicators of water quality, and also help to filter and keep water clean,” Larsen said. “Many of the 26 new water beetle species discovered on this survey are probably restricted to isolated habitats, especially in the mountains of southeastern Suriname, and may occur nowhere else.”
Sandra J. Raredon
Eleven new fish species were found in the region, dubbed a "tropical Eden" by the researchers. Larsen said, “This new sucker-mouthed armored catfish was rare, and only encountered in the narrow, upper reaches of the Palumeu River.
“This delicate slender opossum is really cute,” Alonso said. “It’s hard to find small mammals like this, which are indicative of primary forest.”
is the largest of all South American dung beetles, Larsen shares. Despite its name, this species feeds more frequently on dead animals than on dung. A highly unusual case in the Animal Kingdom, both males and females of this species possess a long horn on their head, which they use during intense battles with other individuals of the same sex. The vast difference in adult body size seen here is primarily determined by how much food was available to the developing larva. This species is capable of rapidly burying large animal carcasses, providing an important ecological service that sustains rain forest health.
“Given the beautiful coloration, high visibility and popularity of frogs in the poison dart frog family (Dendrobatidae), most species in this group are relatively well known,” Larsen said. “Therefore, the discovery of this species potentially new to science is particularly exciting. The toxic secretions of poison dart frogs hold great potential to yield new medicines that could greatly benefit the world -- yet with frogs declining globally, their protection in the wild is essential.”
The researchers could have just scratched the new species surface in southeastern Suriname, given that other animals, fish, insects and more unknown to science could be found there. The region’s human population is currently small -- only about 500,000 -- but it’s growing and there is a threat of future habitat-destroying activities, such as mining and logging. Alonso hopes that the wilderness can be protected, with money-generating activities such as ecotourism allowing both humans and amimals to thrive there.
A never-before-contacted tribe in Brazil's Amazon voluntarily emerged from the forest and approached scientists, according to an announcement from the country's Indian affairs dapartment (FUNAI).
Science Now reported that on June 29, the group of Brazilian scientists had made the first official contact with an isolated tribe in 18 years.
It wasn't an accident that the scientists were in the area, the Science Now article said. "The event -- Brazil’s first official contact with an isolated tribe since 1996 -- was not entirely unexpected. Since early June, fearful villagers in the region had radioed Brazilian authorities at least twice about a group of some 35 tribal strangers who were raiding their crops and trying to make off with machetes and other tools," it said.
FUNAI quickly sent experts to the Upper Envira River region in case the indigenous tribe wanted to make contact.
According to Science Now, there are at least 70 isolated tribes in the Brazilian Amazon, and many more in the broader rainforest. Most have already made some sort of contact with the outside world, mainly through rubber harvesters and mahogany loggers.
In fact, FUNAI officials think that this indigenous tribe -- whose language is still unknown -- fled mahogany loggers working illegally on protected lands in Peru, some 300 kilometers (ca. 186 miles) away from where they emerged. The loggers could have driven off the animals the tribe hunted, leaving them no choice but to migrate.
Whatever the reason they chose to emerge from the forest on June 29, the most important thing to do now, experts said, is to protect the tribe's members from contracting dangerous diseases they're not protected from, like the flu and whooping cough. The elderly and very young are most at risk.
Between 1983 and 1985, over half of another isolated population in the Peruvian Amazon died from illnesses they contracted from loggers, Science Now said.