invasive

Scientists have discovered a new species of yeast in the guts of mice and humans that could have remarkable health benefits.Named Kazachstania weizmannii by researchers from Israel and Germany, the new species appears to fight off another yeast called Candida albicans, which has the potential to spread into a dangerous fungal infection. C. albicans lives on many people's skin and mucous membranes without much bother, though overgrowth can cause the irritating condition candidiasis (commonly called thrush). Under some…

Scientists at the University of Chicago have developed a new pacemaker that’s thinner than a human hair, wireless and operated entirely by light from an optic fiber. The non-invasive device could help regulate heart activity or even stimulate neurons in a set pattern to treat symptoms of conditions like Parkinson’s.The heart pumps thanks to a series of very carefully timed electrical signals, but if those signals fall out of time, they can lead to all sorts of issues, such as strokes, heart attacks or even a fatal failure…

It almost sounds like a fairytale: a tiny ant dramatically impacting a giant lion. But thanks to a study that reveals just how interconnected all life forms really are, researchers have just figured out that it happened on the savannas of Africa.Sometime around the turn of the last century, an invasive ant species known as Pheidole megacephala, believed to come from the island of Mauritius, began to establish itself in earnest at the Ol Pejeta Conservancy in Kenya. These big-headed ants, as they are more commonly known,…

by Andrew Edwards, Christine Schlesinger, Ellen Ryan-Colton, Greg Barber and Peter Jacklyn, The Conversation Credit: CC0 Public Domain As the semi-arid Pilliga Scrub burns in New South Wales, many of us are thinking about fire once again. It's an El Niño summer in the hottest year on record. And there's a remarkable amount of grass drying out and ready to burn.…

As a less invasive alternative to open-heart surgery, cardiac surgeons are increasingly accessing the heart from within using central venous catheters. An experimental new catheter could soon make such procedures quicker and easier than ever before.Ordinarily when using a central venous catheter for heart surgery, the device is inserted into a vein in the patient's neck, chest, arm or groin via a small incision.The surgeon then guides the catheter up that vein and into the heart, typically guided by ultrasound images.…

Wildlife officials across the Great Lakes are looking for spies to take on an almost impossible mission: stop the spread of invasive carp.Over the last five years, agencies have employed a new seek-and-destroy strategy that uses turncoat carp to lead them to the fish's hotspot hideouts.Agency workers turn carp into double agents by capturing them, implanting transmitters and tossing them back. Floating receivers send real-time notifications when a tagged carp swims past. Carp are large fish with an even larger appetite.…

If an enemy you were previously safe from turned up in your neighborhood, what would you do? That's a problem currently being faced by barnacles in northern Mexico, which are growing sideways to thwart invasive predatory snails.Ordinarily, the Tetraclita rubescens barnacle has a roughly symmetrical conical shell that resembles a miniature volcano, just like most other barnacles.However, after reviewing over 1,000 barnacle photos taken at 30 sites along the Pacific coast of North America (between 2017 and 2022), scientists…

Colombia has begun a new campaign sterilizing its invasive hippos, showing signs that it is taking the threat the animals pose to the country’s biodiversity and local communities seriously. The plan is to capture, anaesthetize and sterilize an initial 20 hippos by the end of 2023 as part of a three-pronged approach the government is taking to reduce the rapidly expanding population that has established itself along the country’s Magdalena River.The other prongs involve shipping hippos abroad to sanctuaries and zoos, and —…

The spotted lanternfly may look innocent, but these ravenous creatures have been known to decimate crops, causing to various fruit trees since being accidentally introduced to this country nearly a decade ago. The big idea right now is to introduce several species of wasps into the mid-atlantic ecosystem to hunt and eat the lanternflies, but students at have developed an alternative plan in the form of a robot death machine. It’s called TartanPest and uses a combination of technologies and components to autonomously…

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