Biology

'Bear cams' give Alaska biologists a glimpse into the life of the city critters

ANCHORAGE, Alaska — Biologists at the Alaska Department of Fish and Game are getting a peek into what city bears do all day.

Syracuse High School advanced placement biology students laugh as they joke around, making a sign indicating they just urinated in their wetsuits. The 21 students went to Catalina Island in California to study marine life over spring break with their teacher, Jordan Denos. This is everyone prepared to snorkel for the first time. (Courtesy of Dalyn Welch)

Syracuse High students really dive in to learn about marine-related careers

SYRACUSE — For 21 students in Jordan Denos’ AP biology class at Syracuse High School, spring break was not about sleeping in, slaying video-game villains or forgetting lessons learned during the previous term.

No. Spring break, earlier this month, was about traveling to the Catalina Island Marine Institute for five days of science camp, kayaking with dolphin escorts and swimming with 50 or so leopard sharks, as well as learning the hard way not to taunt a sports-challenged bison.

“There are different activities schools have for sports teams and band trips, but I really haven’t seen anything for kids who are more academically oriented,” said Denos, who teaches the school’s advanced placement biology class for juniors and seniors.

USU professor uses zombie apocalypse to teach math and biology

 LOGAN -- If a zombie apocalypse hit Cache County, 70 percent of the population would be devoured or infected within seven to 10 days.

University of Utah botanist Greg Wahlert, a postdoctoral researcher in biology, and the upper part of a new plant species he discovered, Amorphophallus perrieri. The plant is in the same family as philodendrons, taro root, skunk cabbage and anthurium, which is common in floral arrangements. Photo Credit: Lee Siegel, University of Utah

New plant discovered by UofU biologist smells like roadkill

SALT LAKE CITY - The famed "corpse flower" plant - known for its giant size, rotten-meat odor and phallic shape - has a new, smaller relative: A University of Utah botanist discovered a new species of Amorphophallus that is one-fourth as tall but just as stinky.

The new species, collected on two small islands off Madagascar, brings to about 170 the number of species in the genus Amorphophallus, which is Greek for "misshapen penis" because of the shape of the plants' flower-covered shaft, called the inflorescence or the spadix, says Greg Wahlert, a postdoctoral researcher in biology.

Yale enters fluoride debate with new study

HARTFORD, Conn. -- The way we use fluoride hasn't changed much since the mid 20th century, but a new Yale University study could change that.

Marlene Zuk, world-class biologist at the University of California, Riverside, and author of several popular science books, has published a new book, "Sex on Six Legs: Lessons on Life, Love, and Language From the Insect World." Zuk holds a cricket, which is among the insects mentioned in her book. (SHNS photo by Mark Zaleski / The Press-Enterprise)

Cricket sex nothing to chirp about, biologist learns

In 1991, when Marlene Zuk visited Hawaii, she did what every visitor to the islands wants to do.

"I said, 'I'll see if there are any crickets there that I can dissect for parasites,' " she said. "Doesn't everyone?"

Zuk, a biology professor at the University of California, Riverside, studies crickets along with some other animals. She recently published "Sex on Six Legs," her third book about the sex lives, and other interesting behaviors, of insects.

The book details intriguing elements of the bug world, such as how the genitals of male honeybees explode after they have sex, how mother earwigs care for and feed their young, and how a particular female wasp poisons the brain of a cockroach just enough so that she can use its antennae to steer it to her nest, where it becomes food for her brood.

Dinosaurs may have played host to lice

LOS ANGELES -- The lowly louse may have a more impressive pedigree than once thought: Dinosaurs may have hosted the parasitic bugs, a study says.

The findings, published Tuesday in the journal Biology Letters, also show -- through comparison of lice -- that mammals and birds may have begun to flourish before the dinosaurs went extinct 65 million years ago. That's counter to a long-held idea that they ascended and diversified only once the dinosaurs were gone.

Lice spend their entire lives on one species, so they evolve along with their hosts. That means their similarities can be used as a way to study evolutionary relationships between the creatures they live on.

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