Tag Archives: Cave

New Very Leggy Millipede Found in California

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Getting a leg up on its competitors, a new millipede has been discovered in a cave in California. Researchers also found several other new insects.

“I never would have expected that a second species of the leggiest animal on the planet would be discovered in a cave 150 miles away,” says Paul Marek, Assistant Professor in the Entomology Department at Virginia Tech. It’s closest relative lives under giant sandstone boulders outside of San Juan Bautista, California.

In addition to the new millipede’s legginess, it also has bizarre-looking mouthparts of a mysterious function, four legs that are modified into penises, a body covered in long silk-secreting hairs, and paired nozzles on each of its over 100 segments that squirt a defense chemical of an unknown nature.

This is quite the millipede! Read the press release here.  And the full research article can be read over on Pensoft.net.

Cave of Crystals, Video 01

I want to start a new segment here at the Wasatch Grotto. I love photo and video. After all, it is what I do for work. So I want to share cool cave videos and photos I come across. It will diversify the information on our site: news, studies, discoveries, and videos.

For now, once a month I’ll post a video about caves. I hope you enjoy them, like I do.

For the first several videos, I’m going to focus on the Cave of Crystals, in mexico. This Cave is connected to the Naica Mine and has the largest crystals in the world. Here is a behind the scenes edit, by host Nik Halik, of a the documentary, just to wet your whistle.

Pleistocene Beringian Wolf Migration

This summer research was being done in the Natural Trap Cave(NTC), that some of us here in Utah got to help out with. Earlier this year a study by Julia  A Meachen, Alexandria L. Brannick,  and Trent J. Fry on the Beringian Wolf, fossils found at NTC, was released. It is a fascinating read.

Abstract

Pleistocene diversity was much higher than today, for example there were three distinct wolf morphotypes (dire, gray, Beringian) in North America versus one today (gray). Previous fossil evidence suggested that these three groups overlapped ecologically, but split the landscape geographically. The Natural Trap Cave (NTC) fossil site in Wyoming, USA is an ideally placed late Pleistocene site to study the geographical movement of species from northern to middle North America before, during, and after the last glacial maximum. Until now, it has been unclear what type of wolf was present at NTC. We analyzed morphometrics of three wolf groups (dire, extant North American gray, Alaskan Beringian) to determine which wolves were present at NTC and what this indicates about wolf diversity and migration in Pleistocene North America. Results show NTC wolves group with Alaskan Beringian wolves. This provides the first morphological evidence for Beringian wolves in mid-continental North America. Their location at NTC and their radiocarbon ages suggest that they followed a temporary channel through the glaciers. Results suggest high levels of competition and diversity in Pleistocene North American wolves. The presence of mid-continental Beringian morphotypes adds important data for untangling the history of immigration and evolution of Canis in North America.

Read their complete and thorough study at Ecology and Evolution.com.

New Mexico: Carlsbad Cavern

Have you been down to the caves in New Mexico yet? Here is an awesome article about Carlsbad Caverns. This was published in New Zealand of all places. They did a great job capturing the majesty of the caves!

The Carlsbad caves were formed over millennia and need careful curation to balance care and access. Photo / 123RF
The Carlsbad caves were formed over millennia and need careful curation to balance care and access. Photo / 123RF

“Caves are like the unknown,” Joop says. “Since I can’t go to the moon and explore other planets, this is the last unknown realm on the planet. We’ve gone to the highest peaks and everything, but there’s so much yet to be found and explored here underground.”

More than 400,000 people visit the Carlsbad Caverns each year to get a glimpse of the monumental stalagmites and stalactites, delicate soda straws, translucent draperies and reflective pools that decorate the park’s main attraction, the Big Room. But few experience the more extreme tour through Lower Cave or a lantern-lit history lesson in Left Hand Tunnel.

Even fewer people get to crawl through the Hall of the White Giant and Spider Cave, which are the most difficult – and quickly booked – of the ranger-guided caving tours.

Read the full article at NZ Herald.

Surface-Going Cave Crickets more Isolated than Cave-dwelling Cousins

A pair of Ceuthophilus crickets. (Drexel University)
A pair of Ceuthophilus crickets. (Drexel University)

Genetic research is showing that certain types of crickets that live entirely in caves (in the Southern US) are more genetically diverse than their cousins who venture to the surface to forage.

It seems like this should be the other way around, since the foraging crickets are traveling more in the caves and out of the caves.

“The main issue is that Ceuthophilus leaves the cave to forage at night, whereas Geotettix doesn’t. That led us to hypothesize that perhaps Ceuthophilus was better at dispersing and might not show as much genetic structure,” said Jason Weckstein, PhD, associate professor in the Department of Biodiversity, Earth and Environmental Science at Drexel University’s College of Arts and Science. “In fact, what we found was the Ceuthophilus showed deeper — older — structure than Geotettix.”

The crickets in the study live in a variety of caves in central Texas, from which the team collected specimens and then analyzed their DNA.

Ceuthophilus are known to be trogloxenes, meaning that they live parts of their lives in caves. Species in the Ceuthophilus sub-genus lay their eggs and spend the day in caves but come out to forage at night.

Geottetix, meanwhile, are troglobites, which means that they spend all of their lives deep in caves. The team wrote that Geotettix have almost never been recorded on the surface outside a cave entrance.

Read the full article at Drexel Now.

Climbing Cavefish, Batman!

Researchers have found a blind cavefish that can climb waterfalls. No, I am not making this up. The New Jersey Institute of Technology featured this story.

This research is reported in a March 24 Nature Scientific Reports article, “Tetrapod-like pelvic girdle in a walking cavefish,” by Brooke Flammang, Daphne Soares, Julie Markiewicz and Apinun Suvarnaraksha. Flammang and Soares, assistant professors in the NJIT Department of Biological Sciences, were assisted with the research by Markiewicz, an NJIT post-baccalaureate research volunteer in the Flammang lab at the university. Investigator Suvarnaraksha is a member of the Faculty of Fisheries Technology and Aquatic Resources of Maejo University in Thailand. The full text of their article is available at www.nature.com/articles/srep23711.

Flammang studies fish locomotion at the New Jersey Institute of Technology, so she’s used to seeing fish moving on land. She wasn’t surprised to see one that could push itself over rocks and through water gushing like a fire hose. But other “walking” fish hop forward by leaning on their pectoral fins like a pair of crutches, or flex and shimmy to wriggle over surfaces. This one was taking steps, moving one of its front fins in time with the back fin on the other side of its body, alternating in a diagonal two-step like a salamander. Flammang was incredulous. “I was like, ‘Fish can’t do that,’” she says. “That’s ridiculous.”

Read more at: NJIT.com and at Wired.com

Prehistoric Man Had a Penchant for Tortoises

Remains discovered in Qesem Cave, near Tel Aviv, shows that early humans had a taste for turtles.

Tel Aviv University researchers, in collaboration with scholars from Spain and Germany, have uncovered evidence of turtle specimens at the 400,000-year-old site, indicating that early man enjoyed eating turtles in addition to large game and vegetal material. The research provides direct evidence of the relatively broad diet of early Paleolithic people — and of the “modern” tools and skills employed to prepare it.

The research team discovered tortoise specimens strewn all over the cave at different levels, indicating that they were consumed over the entire course of the early human 200,000-year inhabitation. Once exhumed, the bones revealed striking marks that reflected the methods the early humans used to process and eat the turtles.

Read the full article at Tel Aviv University‘s site.