Sentences with phrase «living vertebrate»

Now scientists believe they may have found the longest - living vertebrate on Earth: Greenland sharks which could live to be as ancient as 512 years old.

But together, these two groups make up about 99.9 % of the living vertebrate species.

«We definitely expected the sharks to be old, but we didn't expect that it would be the longest - living vertebrate animal,» says Julius Nielsen of the University of Copenhagen, Denmark.

«That still makes the Greenland shark the longest - living vertebrate known to science.»

The scientists studied the rib plates, so - calledcostals, of turtle shells and the ribs of various fossil and living vertebrate groups, including mammals, crocodiles and even dinosaurs.

The researchers published their results in the journal Neuron, becoming the first to show the effects of sleep / wake cycles and time of day on the synapses of a living vertebrate.

«Reproduction in modern birds is distinct among living vertebrates.

Humans — along with most other living vertebrates — belong to the same group as bony fish, whose skeletons are made of bone.

A Greenland shark has lived at least 272 years, making the species the longest - lived vertebrate in the world — smashing the previous record held by a 211 - year - old bowhead whale.

Jawed vertebrates — such as fish, birds and mammals — make up 99 % of all living vertebrates, including us.

In this primitive two - room shed, Congdon has conducted some ofthe most sophisticated life - history studies of long - lived vertebrates — research that could upend our theories about how animals grow old andmight one day help unlock secrets of human longevity.

At university, science undergraduates can perform potentially harmful experiments on living vertebrates only under Home Office licence.

In the laboratory, as described by Alan Walker from the University of Edinburgh, they must be fed on live vertebrate hosts.

On this week's show: Julius Neilsen talks about the longest - lived vertebrate on Earth, and a daily news roundup

With help from Yale University biology student Ignacio Quintero, Wiens calculated such estimates for 540 species in 17 groups of living vertebrates.

The second change involved in the transition to frogs and toads from other amphibians was in the sacral ribs, broad bones attached to a vertebra which in most land - living vertebrates fit below and inside the pelvis to hold it fixed relative to the backbone.

Jawed vertebrates now make up 99 % of all living vertebrates, from fish to mammals.

policies regarding human subjects, live vertebrate animal subjects in research, and safe laboratory practices

This fish, native to Zimbabwe, is the shortest - lived vertebrate that can be housed in captivity, with a natural life span of just four to six months under optimal lab conditions.

Under this law, the sale or transfer of any «live vertebrate creature except man» to someone on the abuse registry or anyone who «purchases any animal on behalf of any person having resided in Cook County and listed as an animal abuse offender» is a violation punishable by escalating fines for subsequent offenses.

«Shipments are coming in labeled «live vertebrate» or «fish,»» Daszak said.

Not exact matches

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Placental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (a-pes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (a-pes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Pl - acental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos 79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (apes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (apes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

(We know and can see that bacteria evolve quite a bit faster than vertebrates, and once an organism has adapted to its environment sufficiently, evolutionary pressure is lessened — «living fossils»)

Originally when life was first evolving, there were no vertebrates, evolution doesn't have «one thing turning into another» like pokemon, it has life branching off like a giant complex web.

No, he killed every land vertebrate which was not on the ark: Everything on the dry land in whose nostrils was the breath of life died.

If you are conceding that most marine organisms died, then you face the same founding population genetic diversity constraints limiting their ability to rapidly yield the mult - itude of observable marine vertebrate and invertebrate life in a very short time.

The same evidence was found in another family of proteins, the cytochromes c, and this made it possible to conclude that the common ancestor of yeast, plants, and vertebrates lived about 1.2 billion years ago.

This accounts for the tendency, which has been insufficiently noted, of every living phylum (insect and vertebrate) to group itself towards its latter end in socialized communities.

Life on this planet has, in the context of its limitations, managed a threefold success: plant and animal life, and among the animals, arthropods (including social insects) and vertebrates (including humankLife on this planet has, in the context of its limitations, managed a threefold success: plant and animal life, and among the animals, arthropods (including social insects) and vertebrates (including humanklife, and among the animals, arthropods (including social insects) and vertebrates (including humankind.

The team compiled a list of more than 1000 species of vertebrates that lived in the 96 - million - year interval straddling the mass extinction.

«These results change our understanding of when the largest living group of vertebrates evolved and allow us to iron out a lot of the wrinkles in our understanding of the sequence of evolutionary events.»

«Living herd animals do occasionally turn carnivore to fulfill a particular nutritional need,» says vertebrate paleontologist Paul Barrett of the Natural History Museum in London.

Ecosystems left in the wake of a mass extinction that occurred about 359 million years ago (artist's representation shown) contained fish and other vertebrates that were much smaller than the species that lived before the die - off, a new study suggests.

There is only one group of vertebrate that has the capacity to regenerate highly complex structures such as limbs, jaws, tail, spinal cord, or eyes throughout their lives: the urodele amphibians.

They've abandoned a way of life that has nourished vertebrates for some 500 million years.

But one question nags: Why would short - lived, solitary creatures acquire so many of the cognitive and affective features of long - lived, social vertebrates?

«Tracking data reveal the secret lives of marine animals: Seals, whales, sharks, turtles, seabirds, and other marine vertebrates show similar patterns of movement in marine environments.»

Individual Greenland sharks appear to live perhaps a century longer than any other vertebrate, and might have life spans approaching 500 years.

Bioacoustics expert Bill Evans of Texas A&M University in Galveston calls the discovery «interesting,» as it means that dolphins are among the few types of vertebrates — the others being birds and humans — capable of learning new vocalizations throughout their lives.

«When the carcass of a vertebrate reaches the Mediterranean seabed and remains at shallow depths, it is free - living bacteria that degrade its bones and decompose the organic material.

Studying aging and its associated diseases has been challenging because existing vertebrate models (e.g., mice) are relatively long lived, while short - lived invertebrate species (e.g., yeast and worms) lack key features present in humans.

«Our limited understanding of the incredible jaws of these arachnids, together with terminology that is unstandardized and even contradictory, has hindered our ability to classify them and figure out where they fit in the arachnid tree of life because, much like the cranial anatomy of vertebrates, the jaws of solifuges contain most of the relevant information,» said Lorenzo Prendini, a curator in the Museum's Division of Invertebrate Zoology and an author on the paper.

Vertebrate evolution generally proceeds at far less than a snail's pace, making study of the process in living animals difficult at best.

«This event 359 million years ago is called the Hangenberg extinction, and it nearly wiped out vertebrate life, which at the time was limited to the water,» said Lauren Sallan, an assistant professor in the U-M Department of Ecology and Evolutionary Biology.

The 7 months represent a record for frozen vertebrates, and while Siberian salamanders have lived through -30 °C temperatures for shorter durations, those salamanders did not have as good a survival rate as the wood frogs.

That oddly textured pebble, scientists report at the Society for Vertebrate Paleontology meeting, is actually an endocast — an impression preserved in the rock — that represents the first known evidence of fossilized brain tissue of a dinosaur (likely a close relative of Iguanodon, a large, herbivorous type of dinosaur that lived about 133 million years ago).

Chytrid fungi have not previously been found to parasitize vertebrates, says Green, but some live freely in water or soil and attack plants and insects.

While that is close to true for coelacanths, other famous «living fossils,» which have the slowest molecular evolutionary rate among vertebrates, the Lingula genome has been evolving rapidly, despite the lack of changes in appearance.

Conodonts, tiny eel - like creatures that lived from 520 million to 205 million years ago and were our earliest vertebrate relatives, have long been one of paleontology's great enigmas.