生物学(第 12 页)

关于地球及其他地方生命的指南，包括有关植物、动物和生理学的最新消息。

生物学最新动态

A hyenea shows its jaws. Giant hyenas went extinct about 500,000 years ago, but were roughly 240 pounds and skilled scavengers like their modern counterparts.
进化

作者：Laura Baisas

An illustration of Bohemolichas feeding on the seafloor, moments before it is engulfed, buried, and preserved by an underwater mud flow.
生物学

作者：Laura Baisas

Aerial view of a hot air balloon over Namib desert. The circular “fairy circles” are derived from any vegetation & surrounded by tall grass.
生物学

作者：Laura Baisas

A close up of the black and white stripes of a zebra. The same patterns that dictate zebra stripes could also control the way sperm swim.
生物学

作者：Laura Baisas

A tarantula with a mostly black body, but bright blue legs and pincers. Chilobrachys natanicharum is the first tarantula species found in Thailand’s mangrove trees. CREDIT: Yuranan Nanthaisong/ZooKeys.
进化

作者：Laura Baisas

Rafflesia kemumu in the rainforest of Sumatra.
生物学

作者：Laura Baisas

A high-density field of corals, including the spiraling Iridogorgia magnispiralis. Image courtesy of the NOAA Office of Ocean Exploration and Research, 2016 Deepwater Exploration of the Marianas.
生物学

作者：Laura Baisas

Internet data server farm with green and pink glowing LED lights
生物学

作者：拉胡尔·拉奥

Yellow pollen spring out from a coniferous tree. The pollen that makes us sneeze every spring, may have helped lay the groundwork for the migration of our very distant ancestors into Eurasia.
生物学

作者：Laura Baisas

A Caribbean box jellyfish on a black background. It has a round, bell shaped body, with about 11 visible tentacles. It also has four parallel brain-like structures with roughly 1,000 nerve cells in each.
生物学

作者：Laura Baisas

A black and white French bulldog puppy sits in a garden with green grass and orange flowers. In an experiment where dogs had to find food hidden in a box, flat-faced dogs were more likely to look back at people than a breed with a mid-length muzzle.
生物学

作者：Laura Baisas

Multiple reddish pink parasitic plants called balanophora growing in a forest. Balanophora shed one third of its genes as it evolved into a very streamlined parasitic plant.
进化

作者：Laura Baisas

A pied tamarin monkey sits on a large rope. Pied tamarin monkeys live in a small geographic range in Brazil, where they eat fruits, flowers, and various tree gums and saps.
生物学

作者：Laura Baisas

A dissected ant and where you can see the encapsulated parasites (white oval structures) spilling out of the hind body.
进化

作者：Laura Baisas

An Australian lungfish named Methuselah swims in a tank at the Steinhart Aquarium. The fish has a flat snout, olive-green scales, and a long torpedo-shaped body.
生物学

作者：Laura Baisas

A giant panda eats a green plant.
生物学

作者：Laura Baisas

Can animals give birth to twins?
生物学

作者：迈克尔·贾菲和特蕾西·贾菲/The Conversation

A beagle running through grass.
生物学

作者：格温多琳·拉克

A gray tufted titmouse perches on a scientist's hand.
生物学

作者：Jocelyn Solis-Moreira

Microraptor wearing helmet is shot out of a circus cannon to represent how dinosaurs evolved to fly. Illustration in red, yellow, blue, and green.
进化

作者：莱利·布莱克

Virgin Galactic spacecraft in suborbital flight above Earth
进化

作者：Andrew Paul

two jackdaws (Corvus monedula) on a branch
进化

作者：萨拉·凯莉·沃森

An orca whale swims around an ice flow with a crabeater seal and penguin on the ice.
生物学

作者：Laura Baisas

How an internet sleuth rekindled hope for the survival of the clown wedgefish
生物学

作者：布莱恩·霍维/Hakai Magazine

3D printer making algae-based water decontaminate
生物学

作者：Andrew Paul

Kidney transplant sensor on researcher fingertip
生物学

作者：Andrew Paul

An artist’s illustration of the 25 million year old Ditjimanka Lumakoala blackae, featuring (left to right) the wallaby-sized herbivore Muramura williamsi, an extinct koala relative named Madakoala devis,i and the calf-size lizard called Ilaria lawsone.
进化

作者：Laura Baisas

An artist’s illustration of Fujianvenator prodigiosus, an avialan theropod who lived during the Late Jurassic period and had a lower leg that was twice as long as its thigh.
进化

作者：Laura Baisas

Two monkeys sitting in a forest. Dartmouth researchers report that apes and early humans evolved more flexible shoulders and elbows than monkeys to safely get out of trees. For early humans, these versatile appendages would have been essential for gathering food and deploying tools for hunting and defense.
进化

作者：Laura Baisas

Fiver different types of paper cups sitting are sitting on a table. Some have eco-friendly labeling and one warns of plastic chemical leaching. Paper cups are replacing plastic cups on the market, but paper cups can also be toxic to living organisms, shows a new study from the University of Gothenburg.
生物学

作者：Laura Baisas

A couple standing on the beach in warm sunlight.
进化

作者：Laura Baisas

A kākāpō sitting in its burrow. They can live up to 90 years and forage on the ground for food since they are flightless birds.
生物学

作者：Laura Baisas

Two Atlantic puffins stand on a white rock above the ocean, with another group of puffins in the background, Atlantic puffins are sometimes nicknamed “sea parrots,” and their chicks hatch in Maine in early July.
生物学

作者：Laura Baisas

A manatee swims through blue water, surrounded by a school of fish
生物学

作者：海伦·布拉德肖

An artistic reconstruction of Kylinxia, a relative of present day insects and crustaceans. It has two extended forelimbs, a round and segmented body, and three eyes on its head.
进化

作者：Laura Baisas

A magnetic resonance image of the patient’s brain by fluid-attenuated inversion recovery showing an enhancing right frontal lobe lesion (left). A live third-stage larval form of Ophidascaris robertsi removed from the patient’s right frontal lobe (right).
生物学

作者：Laura Baisas

A close-up astronaut outside the ISS above a blue slice of Earth.
生物学

作者：Briley Lewis

Lush and green mint leaves growing in a garden. To keep disruptive “jumping genes” quiet, some plant species use a process called methylation, which adds regulatory markers to the specific sites in the DNA and can be passed down through epigenetic memory.
生物学

作者：Laura Baisas

A large group of white and gray fossils laid out on a blue tarp.
生物学

作者：Laura Baisas

Famous, debunked black and white 'Surgeon's Photo' of Loch Ness Monster
生物学

作者：Andrew Paul

Purple and blue visualizations of human chromosomes.
生物学

作者：Jocelyn Solis-Moreira

A hogfish swims near the Florida Keys. It has spikes on top and a pointy snout.
生物学

作者：Laura Baisas

An illustration of a sabertooth tiger in a grassland. Sabertooth tigers went extinct between about 8,000 and 10,000 years ago.
进化

作者：Laura Baisas

A coral reef just off of an island in Palau. Coral reefs in Palau provide critical habitats for a number of species and provide a storm barrier.
进化

作者：Laura Baisas

Artist's interpretation of Venetoraptor gassenae in a Triassic landscape.
进化

作者：Laura Baisas

Members of the Dutch Tall Ship Oosterschelde wave goodbye from the quay in Rotterdam on August 4, 2023. The Rotterdam ship departs for a two-year world tour that scientist Charles Darwin made two centuries ago.
进化

作者：Laura Baisas

Artist impression of the stem pinniped Potamotherium valletoni swimming in his natural, freshwater environment. Grasses and plants grow below the animal, that has whiskers, legs, and flippers.
进化

作者：Laura Baisas

White dog inhaling colorful waves that represent smells. Illustrated.
生物学

作者：Brandon Keim

A new snake species named Tachymenoides harrisonfordi was discovered during an expedition in Peru in May 2022. The copper scaled snake is seen here coiled on some brown grass.
生物学

作者：Laura Baisas

Three human skulls sitting on a shelf. Cranial modification has been used for millennia to reshape the human skull.
生物学

作者：Laura Baisas

Four bivalve species found along the Maine coast, including the Northern Quahog, Eastern Oyster, a steamer clam, and a blue mussel presented together in a bed of seaweed at low tide.
生物学

作者：Laura Baisas

Talpa hakkariensis, found in the Hakkari region of southeastern Turkey, was identified as a new species of mole, highly distinctive in terms of both its morphology and DNA. The mole is peeking out of an underground burrow.
生物学

作者：Laura Baisas

An illustration of an ancient whale against a sea-blue background.
生物学

作者：Jocelyn Solis-Moreira

Our galaxy, the Milky Way.
进化

作者：Roberto Battiston/MIT Press Reader

Archaeologists dig in the dirt with a brush and scraper.
进化

作者：Laura Baisas

Hands passing out blue medical masks.
生物学

作者：Jocelyn Solis-Moreira

A man is looking in a glass case of coprolites collected in Nong Yakong village, Chaiyaphum Province, Thailand.
进化

作者：Laura Baisas

Microscopic image of individual cell tattooed with gold array
生物学

作者：Andrew Paul

taxidermied two-headed goat kid
进化

作者：Ted Cavanaugh, 作者：Sara Kiley Watson

A hair whorl is a patch of hair growing in a circular pattern around a single point that is determined by the orientation of hair follicles.
生物学

作者：Laura Baisas

Reconstruction of Hupehsuchus about to engulf a shoal of shrimp. The ancient lizard widely opens its skinny snout and large mouth to swallow a large ball of shrimp.
进化

作者：Laura Baisas

A Heliconius butterfly with black, orange, and white on its wings.
进化

作者：Laura Baisas

A long and skinny silver trumpetfish uses a colorful parrotfish as camouflage.
生物学

作者：Laura Baisas

Two astronauts walking in spacesuits in a desert
生物学

作者：本·瓜里诺

© .