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Behind a Museum Door, These Beetles Are Eating Flesh for Science

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Behind a Museum Door, These Beetles Are Eating Flesh for Science

Deep in the labyrinth of the American Museum of Natural History, past the giant suspended blue whale and the first floor’s Alaska brown bears, is an unobtrusive locked door. On it, there is a small sign.

“Bug Colony.”

Behind the door, accessible only to a handful of museum employees, thousands of flesh-eating dermestid beetles toil around the clock handling a task of specimen preparation that even the museum’s best trained specialists cannot.

They eat the meat off animal skeletons, leaving only clean bones behind.

Since many skeletons are too fine to be cleaned by human hands, the museum’s osteological preparation team turns to the six-legged staffers to prepare them for research and display.

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The work is carried out in three gray wooden boxes the size of footlockers that house the colony. They are lined with stainless steel and their flip-up tops reveal beetles swarming the earthly remains of various small animals, mostly birds. They feast upon the gobbets of flesh clinging to the carcasses.

The room is pervaded by the soft, crackling sound of gnawing. “It sounds like something frying, or Rice Krispies when you add milk,” said Rob Pascocello, the colony’s tender.

The beetles are tiny enough — just a few millimeters long — to crawl into the recesses of the smallest animals and nibble away without affecting delicate skeletal structures, said Scott Schaefer, who oversees the museum’s collection of more than 30 million specimens and objects.

“They do the fine, detailed work that cannot be done by hand, because it’s so delicate,” Mr. Schaefer said. “It’s gentler than boiling a specimen or soaking it in chemicals or acid.”

Museum officials say the ravenous colony has processed most of the bird collections’ more than 30,000 skeleton specimens over the decades, plus countless other forms of carrion. “They get into the small crevices and, if left unchecked, keep eating until there’s nothing left to eat,” Mr. Schaefer said.

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On a recent weekday, Paul Sweet, collection manager for the ornithology department, stood in the Bug Room, and in the interest of scientific precision pointed out that its name was imprecise.

True bugs, known to their fans as the Hemiptera order, have mouthparts that pierce and suck. Beetles — Coleoptera — are typically cylindrical and have mouthparts that chew.

The colony had gone to town with those mouthparts to reduce a once-lustrous pink flamingo to a humble bone bundle. A regal snowy owl was similarly picked clean. Then there was the small skeleton in a canister, with bones tinier than toothpicks.

“That’s a songbird,” said Mr. Pascocello.

Dermestid beetles are scavengers often found in the wild on animal carcasses, and in the nests, webs and burrows of animals.

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Museum officials told The New York Times in 1979 that their dermestid colony had remained self-sustaining since being brought over from Africa in the 1930s. Mr. Sweet said the current group has been around for his entire 35 years at the museum, but could not say for sure if they were the original colony’s descendants.

Either way, since a beetle’s life is only about six months, “they’re all kissing cousins,” said Mr. Pascocello. He said that while the museum was closed during the coronavirus pandemic, he “kept a backup colony in my bedroom.”

On this day, Mr. Sweet was looking to skeletonize a northern gannet, a sea bird recovered from Midland Beach on Staten Island. It had been skinned, dried, and trimmed of most of its flesh by researchers before it was handed over to the colony for finishing work.

Within minutes, the carcass was swarmed. The beetles can pick clean a small bird within a couple of days, but may need two weeks for larger skeletons like the gannet.

Mr. Pascocello once served the beetles an orangutan; Mr. Sweet once gave them an emu. But the size of the beetles’ boxes is a factor. Larger specimens must be served piecemeal, like the carcass of a feisty Cuban crocodile known as Fidel, obtained from the Bronx Zoo in 2005.

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Before the pristine skeletons are boxed and cataloged, they are soaked in water and frozen for days to kill remaining beetles or eggs.

The beetles are not a threat to humans, but an infestation of the museum’s specimen collection would be disastrous. Keeping the beetles well fed discourages them from wandering away, as does a strip of Vaseline toward the top of their boxes and a sticky floor section across the room’s doorway.

If the supply of specimens should stall, Mr. Pascocello keeps some chicken around as emergency food. Mr. Sweet said he offered the colony pigs’ feet during the pandemic because it was the cheapest bone meat at the supermarket.

The gourmandising of the beetles is a reminder that important science is not always conducted in gleaming, hygienic laboratories. On the door, under the “Bug Colony” sign, is a handwritten addendum:

“Bad odors emanating from behind this door is normal.”

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China Launches Reusable Rocket in Race With SpaceX

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Video released by Chinese state media shows a state-owned aerospace company launching a rocket and recovering part of it on Friday. The successful launch of a reusable rocket was a major step for China toward challenging SpaceX’s satellite internet dominance.

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Nobel Prize winner leaving UC Berkeley for new role in China

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Nobel Prize winner leaving UC Berkeley for new role in China

Nobel Prize recipient Omar Yaghi is leaving his role at UC Berkeley to lead the development of a new artificial intelligence institute at Tsinghua University in Beijing, the Chinese university announced.

Yaghi will head the AI Chemistry and Materials Research Institute at Tsinghua, where he was appointed an honorary professor in 2022. Known as AIMATRY (AI × Materials × Chemistry), the new center will focus on material design and synthesis through artificial intelligence, according to a statement from the university.

In 2025, Yaghi shared the Nobel Prize in chemistry with Susumu Kitagawa of Kyoto University and Richard Robson of the University of Melbourne for their development of metal-organic frameworks, a type of super-porous material in which metal ions and carbon-based molecules combine to form crystals with exceptionally large surface areas.

The material has the potential to combat climate change by capturing and storing carbon or other pollutants, and by extracting water from the atmosphere in water-scarce areas. Upon awarding the prize, a member of the Nobel committee likened the technology’s ability to store enormous amounts of stuff in seemingly compact spaces to Hermione Granger’s enchanted handbag in the Harry Potter series.

Yaghi’s Irvine-based company, Atoco, has said it will start taking orders later this year for its technology that harvests water from the air.

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A representative for Yaghi said he was not yet available to respond to questions.

China is one of several countries that has been actively recruiting scientists from the U.S., where the Trump administration has slashed science funding, suspended research grants, fired science advisors and tightened immigration restrictions.

“For many, many years, our funding was very competitive; if you worked hard and you were doing good research, you would get funding,” Yaghi said of the U.S. in an interview with Scientific American earlier this year. “The current state is not so encouraging because of the cutting back on grants and support of science by the very agencies that many university researchers rely on.”

Yaghi was born in Jordan to Palestinian refugees, and immigrated to the U.S. when he was 15 to study.

“We’ve learned over and over in human civilization that scholars can move across borders,” Yaghi told the New York Times last year. “This is how knowledge spread and how vast regions of the world lifted themselves out of poverty.”

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Trump administration seeks to limit federal funding that doesn’t ‘advance’ presidential policies

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Trump administration seeks to limit federal funding that doesn’t ‘advance’ presidential policies

A new rule proposed by the White House Office of Management and Budget would fundamentally overhaul the way federal grants are awarded and overseen — a sweeping change that one scientific society said “would all but end the use of scientific merit in the selection of grants and programs across the government.”

Proposed in late May, the rule would give political appointees unprecedented control over federal grants for research, education and infrastructure, and specifies that government funds can only be spent on projects “aligned with administration policies and priorities,” according to a copy of the proposed rule.

The rule would also restrict research topics, limit U.S. scientists’ ability to collaborate with colleagues in other countries and make it easier for the government to suspend or cancel grants at any time.

The changes are intended to improve “transparency, accountability, and oversight for Federal awards” while “ensuring that American tax dollars are not wasted or misused,” according to the White House office.

But critics say that if the rule is implemented, the final sign-off for grants will no longer be in the hands of subject-matter experts within individual agencies, but in those of political appointees.

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“This touches all parts of American life,” said Dr. Eric Rafla-Yuan, a psychiatrist who practices at the Veterans Administration and San Diego County’s psychiatric hospital.

“Control of how all of the federal grants and programs are funded will fall under a small group of highly partisan individuals who would have very few limits on how they spend these billions of taxpayer dollars,” said Rafla-Yuan, who also chairs the Committee to Protect Public Mental Health advocacy group. “This touches everyone’s life, even if they don’t realize it.”

OMB published the proposed rule May 29, opening a 45-day comment period that closes July 13.

Opposition to the proposed rule has mobilized multiple sectors of society. Professional groups representing cancer researchers, civil engineers, county governments, medical schools, housing agencies, city and municipal governments, nonprofits and others have publicly expressed concerns about potential consequences.

By midday Thursday, the Federal Register logged nearly 100,000 comments about the proposal, many of them expressing concern.

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“I understand the need for oversight, fiscal responsibility, and accountability. That is not the issue,” wrote Jack Feldman, a neuroscientist who holds the David Geffen School of Medicine Chair in Neuroscience at UCLA. “The issue is whether scientific research is to be judged by scientific merit, or whether it can be approved, denied, or terminated according to broad political criteria that may change from one administration to the next.”

Crucially, the rule converts policies governing federal grants from “guidance” into binding regulations that all agencies would be required to follow. It would give political appointees power to override federal agencies’ merit-based reviews and mandate that a political appointee review decisions to ensure that all awards “demonstrably advance the President’s policy priorities.”

The elevation of political appointees in what were previously merit-based decisions has alarmed many scientists.

“The proposed rule changes would all but end the use of scientific merit in the selection of grants and programs across the government,” read a statement from the Planetary Society, a nonprofit dedicated to space research.

Researchers and science groups have also expressed concern about a section of the rule prohibiting the promotion of “theories of disparate-impact liability” — a legal concept that refers to policies that appear neutral but cause disproportionate harm to certain groups.

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The section’s vague language and many loopholes could have a chilling effect on any research that studies the effects of a disease, policy or public health intervention on any specific group of people, Rafla-Yuan said.

As an example, he said, “if there’s a specific age range that is at higher risk for suicide, and we want to figure out, well, what’s going on with people that are aged 14 to 19 … we can’t do that under the wording in this rule.”

New restrictions on collaborations with scientists in other countries would hinder opportunities for U.S. researchers and limit innovation, said Joanne Padrón Carney, chief government relations officer for the American Assn. for the Advancement of Science.

“Science is a global enterprise. Especially in biomedical and public health fields, diseases don’t care about borders or government policies,” she said.

California’s congressional delegation sent a letter Wednesday asking OMB to rescind the proposal, outlining concerns about its impact on scientific innovation, U.S. competitiveness and the fiscal stability of local governments, many of which rely on federal grants for local services.

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The proposed rule grants the federal government broad powers to suspend or cancel grants for any reason, introducing “unprecedented unpredictability into local governance,” the lawmakers wrote, “leaving vital infrastructure projects unfinished and abandoning vulnerable populations who rely on these services.”

Republican Sen. Susan Collins has also asked the White House to withdraw certain parts of the letter and extend the public comment period, saying the proposed rule as written would “harm small and rural communities, undermine scientific and biomedical research, and conflict with Congress’ control over the federal funding process.”

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