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Amphibians, Reptiles, & Natural History
Amphibians, Reptiles, & Natural History
Life is not always easy for a bee: Not all plants place their pollen outside. Some flowers have to be set to vibrating before the pollen can get out of their tube-like stamens. Certain bee species have developed a special technique for this: They bite on the flower and use their flight muscles to generate rapid vibrations. The stamen is shaken and the pollen is released. This phenomenon is known as “buzz pollination.”
Who isn’t familiar with the colorful coral reefs from movies like “Finding Nemo” or “The Little Mermaid”? Unfortunately, the reality is often quite different, as these vital ecosystems are under pressure worldwide. Climate change and pollution are causing corals to bleach and die. Even the most resilient coral reefs of the United States are now threatened.
New research finds there is no substitute for real-world observations, but that—under the right circumstances—AI-generated images can be used to improve the performance of computer models used for species identification and biodiversity monitoring.
Like all other snakes, sea snakes shed their skin as they grow. But because they live near the surface of the open ocean, they don’t have the benefit of removing their old skin by slithering against a hard surface. Instead, they wriggle into a pretzel and use the friction generated by their scales to get the job done.
The Hammerschmiede clay pit near Pforzen in the eastern Allgäu is famous for its wealth of finds: Besides fossils of two early anthropoid apes, the remains of numerous vertebrate species have been uncovered in 11.6-million-year-old river sediments—but until now, very few birds.
The nutritional value of aquatic invertebrates such as oysters, mussels and crabs has been significantly overlooked, according to a new study led by researchers at King Abdullah University of Science and Technology (KAUST). The findings provide one of the most comprehensive assessments to date of the nutritional contribution of aquatic invertebrates, along with new evidence to better understand their role in human nutrition and help inform more sustainable fisheries, aquaculture and food-system planning.
Harmful algal blooms pose serious threats to people, animals and the environment. The University of Toledo’s Dr. Jeanine Refsnider counts it as a positive discovery that northern map turtles tend to steer clear, as she and an undergraduate collaborator recently reported in the Journal of Great Lakes Research.
The scavenging behavior of many wild birds plays an important role in the type, number and variety of viruses they have, a new University of Otago–Ōtākou Whakaihu Waka-led study has found.
Researchers at the CUNY Graduate Center and Hunter College have found that Asian elephants can suppress impulsive behaviors and adjust their actions when circumstances change—a cognitive ability that may help explain the animals’ sophisticated problem-solving skills and social behavior.
Monash University scientists have developed a global framework to tackle a major blind spot in biodiversity conservation: Insects underpin ecosystems and food production but remain largely invisible to conservation efforts across the tropics.
An international team of scientists has recreated a 1,000-year timeline documenting ecological changes and human impact on the area surrounding Crawford Lake, the famed location of the proposed Anthropocene.
Hidden deep in the bush, ranging over huge territories at speeds humans can’t match and through terrain not even the most rugged vehicle can handle, hyenas and lions are hard to study. Now, new research using GPS collars to map the movements of individual animals has revealed crucial information about the relationship between these competing carnivore species. We’ve long assumed that hyenas simply shadow lions for scraps, but these findings show that when they encounter each other, it’s the lions, especially males, that approach hyenas, and the hyenas that give way.
Surinam toads (Pipa pipa) are strange, flat frogs with minuscule eyes that live in the murky waters of the Amazon basin and carry their eggs on their backs. The way they catch prey is even weirder. They lie in wait with outstretched forelimbs until a small fish approaches, then snap open their jaws to create enough suction to draw the fish into their tongueless mouths and swallow it whole, all in a few hundredths of a second. But how do these frogs hunt in low visibility with poor vision?
Extreme heat waves disrupt life in soil. Soil bacteria that produce and resist antibiotics switch into survival mode, temporarily reducing the number of resistance genes. At the same time, heat and drought are causing significant damage to soils and ecosystems, especially in cold, wet regions such as the Netherlands. This is evident from a large-scale European study by soil ecologist Franciska de Vries (University of Amsterdam) and colleagues. The findings are published in the journal Proceedings of the National Academy of Sciences.
New research shows that larval Antarctic krill could be carried far from their birthplace by drifting sea ice, linking distant ecosystems in ways conventional models may miss.
A few years ago, I drove with an old friend from Togo, West Africa, towards the country’s last remaining large protected area, Fazao-Malfakassa National Park. Our destination was the Hotel Fazao, where his uncle had once worked as a professional chef after its opening in 1980. For decades, while the park was managed by the Swiss Franz Weber Foundation (FWF), the hotel had hosted tourists from around the world who came to see elephants, monkeys, and other wildlife for which Africa is famous.
The findings of a new study led by the Leibniz-IZW on Namibian free-ranging cheetahs (Acinonyx jubatus jubatus) demonstrate that epigenetic mechanisms might play an important role in how animals develop different phenotypes despite their low genetic diversity. The work is published in the journal Molecular Ecology.
While the highly virulent avian influenza strain has only recently been discovered on Australian shores, researchers at Deakin University have been working behind the scenes for years, anticipating what an outbreak might look like.
New research has found that tree species diversity can play a crucial role in protecting forests from the growing threat of extreme climate events. The study analyzed data from 88,116 separate forest plots across the United States to investigate the impact of “compound climate extremes,” when events such as drought and extreme heat occur at the same time.
Why do some ants help nestmates in distress while others don’t? A research team from Johannes Gutenberg University Mainz (JGU) and Tel Aviv University addressed this question in a new study. The researchers examined worker ants of the species Cataglyphis niger, some of which had shown rescue behavior while others had not. The results, recently published in the Journal of Experimental Biology, suggest that the key difference lies not in body size, morphology or the animals’ energy reserves, but in gene activity in the nervous system.
Every 13 or 17 years, swarms of cicadas emerge from the ground, their black bodies, orange-tinged wings and ruby-red eyes enveloping trees and forests. It is a biological marvel unique in the insect world, and when it happens, it is impossible not to notice.
Symbiotic ammonia-oxidizing archaea in marine sponges are not strict specialists but true “flexitarians.” A team led by microbiologists Bettina Glasl and Katharina Kitzinger from the University of Vienna, in collaboration with partners from Australia, has shown that, unlike their free-living relatives studied thus far, these microbes dine not only on ammonia but also on amino acids such as valine, leucine and isoleucine—and presumably do so to communicate with their animal host. The findings, published in the journal Science Advances , shed new light on one of the oldest animal-microbe symbiotic relationships on Earth and point to a previously underestimated role played by archaea.
Global biodiversity loss is occurring at a rapid pace, driven by multiple human-caused factors, including overexploitation, pollution, invasive species and climate change. Despite increasing research on the impact of climate change on wildlife, few studies have formally attributed observed biodiversity declines to climate change or quantified its contribution relative to other factors.
Some of the most intriguing scientific breakthroughs happen when researchers aren’t explicitly looking for them. Take, for example, the pygmy raccoon (Procyon pygmaeus), a critically endangered species that lives only on Cozumel Island, Mexico. Scientists were observing them for a study on the impact of tourism on their populations when they made an accidental discovery.
Well before I start collecting coats, keys or shoes, my dog always knows when we’re about to leave. By picking up on subtle cues, he anticipates our next movements, reminding me he’s smarter than he often shows. But anticipation isn’t always about brains. Our new research reveals that even an animal with no brain at all can anticipate what’s coming next.
Research led by scientists at the University of Louisiana at Lafayette challenges a long-held assumption about the effects of climate change on marine life: Warmer oceans won’t simply make animals smaller.
A study has found that young chimpanzees develop distinct population-specific vocal patterns as they mature (ontogeny), challenging the long-held assumption that their calls are inflexible and determined solely by genetics. The work is published in the journal PLOS One.