Stick insects make a certain amount of sense, evolutionarily speaking. They look like sticks, or twigs, or leaves; thus camouflaged, they presumably have a better chance of avoiding predators, reproducing, and passing on their stick-resemblance genes to their offspring. Except that birds still eat them, a lot. Stick insects don’t run fast, most don’t fly, and the females typically don’t lay eggs in large numbers. So there’s a mystery: How do they manage to persist from generation to generation? Why, having managed to exist, do they continue to do so? Continue reading
Milkweed was first mentioned in these pages so long ago I had forgotten their importance to Monarch butterflies, a seemingly perennial topic for our contributors. So thanks to Margaret Renkl for keeping that tradition going in her Monday op-ed, and reminding us in the process that while it is not all good news out there, it is also not all bad news:
NASHVILLE — I was pretty proud of myself the spring I planted my first organic garden. It was the mid-1980s, and I was a first-year graduate student in creative writing, a program entirely unrelated to horticultural mastery. But I had taken a college course in environmental biology, and I knew the basics: The more chemicals you use in a garden, the more chemicals you’ll need in the garden. It’s a self-perpetuating cycle, more reliable than the seasons.
At my house, companion planting — marigolds in between the broccoli, tomato vines encircling the spinach — would repel bugs the natural way. Any lingering pests would be dispatched by beneficial insects like ladybugs and praying mantises. One evening I watched happily as cabbage white butterflies flitted over silvery broccoli leaves. Those little white butterflies pausing in the gloaming on the water-beaded broccoli made for a tableau of bucolic harmony. Continue reading
We never think of evolution as particularly predictable. Surprising, yes. Awesome, yes. Predictable? Well, we love science for that reason, but still do not associate evolution with predictability. Thanks to Ed Yong, who enjoys making provocative statements that draw his reader in, for making evolution surprising in a new way:
On each Hawaiian island, stick spiders have evolved into the same basic forms—gold, white, and dark. It’s a stunning example of how predictable evolution can be.
Most people go to Hawaii for the golden beaches, the turquoise seas, or the stunning weather. Rosemary Gillespie went for the spiders.
Situated around 2,400 miles from the nearest continent, the Hawaiian Islands are about as remote as it’s possible for islands to be. In the last 5 million years, they’ve been repeatedly colonized by far-traveling animals, which then diversified into dozens of new species. Honeycreeper birds, fruit flies, carnivorous caterpillars … all of these creatures reached Hawaii, and evolved into wondrous arrays of unique forms. Continue reading
Thanks to the Guardian for sharing this bit of good news:
The rare oriental blue clearwing, that disguises itself as a bee, was spotted in the Malaysian rainforest
A moth that disguises itself as a bee and was previously only identified by a single damaged specimen collected in 1887 has been rediscovered in the Malaysian rainforest by a lepidopterist from Poland.
The oriental blue clearwing (Heterosphecia tawonoides) was seen “mud-puddling” – collecting salts and minerals from damp areas with its tongue-like proboscis – on the banks of a river in Malaysia’s lowland rainforest, one of the most wildlife-rich – and threatened – regions on Earth. Continue reading
Thanks to Sally McGrane for this important article:
KREFELD, Germany — In a nature preserve in western Germany, an elderly gentleman approached a tent-like structure that was in fact a large trap for flying insects. Peering through thick eyeglasses, the 75-year-old retired chemist checked the plastic bottle attached at the top, filled with alcohol and bugs.
Then, with a glance at the clear, late-autumn sky, the man, Heinz Schwan, recalled comparing a 2013 haul from a trap like this one to samples taken in the same place some 20 years earlier. The drop was huge: “75 percent,” Mr. Schwan, a caterpillar lover, said.
Alarmed, the group of local insect enthusiasts Mr. Schwan is co-chairman of ran similar tests in different locations the next year. And the next year. And the next. Continue reading
Ants are the masters of the planet we live on. There is no escaping that. But if these dogs can protect us from some of the more sinister ants, we have these trainers to thank:
Tobias is a Labrador retriever with one job: sniffing out invasive Argentine ants wherever they hide. He’s really good at it, and with his help, a fragile island ecosystem may be spared a repeat inundation with the pests.
Santa Cruz Island is 25 miles off the coast of Southern California, part of Channel Islands National Park. The island’s rich, rugged environment — which includes more than 1,000 kinds of plants and animals, including the bald eagle and the island fox — is threatened by Argentine ants, one of the world’s most successful and wily invasive species. Continue reading
Thanks to Joanna Klein and the Science section of the New York Times:
A genetic analysis showed that a stick insect found on another island was the same species as one that had been wiped out by rats on Australia’s Lord Howe Island.
The tree lobster, one of the rarest insects on Earth, has lived a rather twisted life story.
Scientifically known as Dryococelus australis, this six-inch-long stick bug with a lobster-esque exoskeleton once occupied Lord Howe Island in the Tasman Sea, between Australia and New Zealand. Continue reading
It has been quite some time since we linked out to an Ed Yong story, and title notwithstanding this is as good as they come:
The ethereal allure of a cave full of glowworms masks a sinister purpose and a weird origin story.
At first, they look like stars. I see them as I gaze upward at the ceiling of a flooded, pitch-black cave—hundreds of blue pinpricks. As my eyes habituate to the darkness, more and more of them resolve, and I see that they are brighter and more densely packed than any starry field. And unlike the night sky, these lights don’t appear as a flat canvas, but as a textured one. Some are clearly closer to us than others and they move relative to each other, so the whole tableau seems to undulate gently as our boat sails beneath it. These lights are not astrological, but entomological. They are produced by insects called glowworms. Continue reading
It’s good to find an inspiring story highlighting a child’s interest in scientific exploration and the support of parents and the entomological community to foster that passion. Thanks to NPR for bringing it to our attention.
Sophia Spencer, 8, loves bugs — especially grasshoppers. She’s an expert on insects, and likes to give her littlest friends an occasional ride on her shoulder.
That used to earn her mockery from her peers. But now it’s earned her a massive outpouring of support — and a byline in the Annals of the Entomological Society of America.
Everything changed after Sophia’s mom, Nicole Spencer, reached out to scientists for support last year.
She wrote to the Entomological Society of Canada and explained the dilemma. Her daughter wanted to know if she could learn more about bugs as a job, but her mom wasn’t sure how to encourage her. And she wanted to reassure her that her entomological enthusiasm wasn’t weird.
Mission accomplished. Continue reading
For a second day in a row, a butterfly story catches our attention. Small stories of unexpected good fortune are always welcome:
Elusive and endangered white-letter hairstreak discovered in a field in the Scottish borders could become the 34th species to live and breed in the country Continue reading
Thanks to Janet Marinelli and the team at YaleEnvironment360:
The population of North American monarch butterflies has plummeted from 1 billion to 33 million in just two decades. Now, a project is underway to revive the monarch by making an interstate highway the backbone of efforts to restore its dwindling habitat. Continue reading
Thanks to Brent Crane writing in the Elements section of the New Yorker’s website:
Five years ago, George Heimpel, an entomologist at the University of Minnesota, travelled to Trinidad in search of insect larvae. He was after several kinds in particular—Philornis downsi, a fly whose parasitic young feed on the hatchlings of tropical birds, and various minuscule wasp species whose own offspring feed on those of the fly. Continue reading
Thanks to National Public Radio (USA) for this new appreciation for an otherwise underappreciated creature:
People around the world use more than a trillion plastic bags every year. They’re made of a notoriously resilient kind of plastic called polyethylene that can take decades to break down.
But a humble worm may hold the key to biodegrading them. Continue reading
Any story with Metamorphosis in it is bound to get our attention, but a long-forgotten scientist getting her due is the intrigue that makes this story by JoAnna Klein–A Pioneering Woman of Science Re‑Emerges After 300 Years–coinciding with the republication of this book below, worthy of the read:
Maria Sibylla Merian, like many European women of the 17th century, stayed busy managing a household and rearing children. But on top of that, Merian, a German-born woman who lived in the Netherlands, also managed a successful career as an artist, botanist, naturalist and entomologist.:
“She was a scientist on the level with a lot of people we spend a lot of time talking about,” said Kay Etheridge, a biologist at Gettysburg College in Pennsylvania who has been studying the scientific history of Merian’s work. “She didn’t do as much to change biology as Darwin, but she was significant.” Continue reading
We had a long run of links since 2011 to her wondrous science reporting, and then we had not seen her since this past September; suddenly she has come back on our radar, unexpectedly but predictably awesome:
Whether personally or professionally, Daniel Kronauer of Rockefeller University is the sort of biologist who leaves no stone unturned. Passionate about ants and other insects since kindergarten, Dr. Kronauer says he still loves flipping over rocks “just to see what’s crawling around underneath.”. Continue reading
Wired has an excellent series, worth a look if you enjoy small bursts of extreme science media:
Thanks to National Public Radio (USA):
Ants in Fiji farm plants and fertilize them with their poop. And they’ve been doing this for 3 million years, much longer than humans, who began experimenting with farming about 12,000 years ago. Continue reading