Sentences with phrase «vertebrate animals in»

2) Facility license for experimental utilization and care of vertebrate animals in research and training (mandatory for all experimental manipulations requiring anaesthesia).

«[It] has a single row of belly scales, it has very snake - like vertebrae, it has a body longer than the tail, it has hundreds of vertebrae, it has the remains of other vertebrate animals in the stomach and so it was a carnivore, it has backward pointing teeth.

For her PhD, Viglietti studied the fossil - rich sediments present in the Karoo, deposited during the tectonic events that created the Gondwanides, and found that the vertebrate animals in the area started to either go extinct or become less common much earlier than what was previously thought.

No longer is this extremely rare order of ancient fish crowned the slowest evolving vertebrate animal in the world.

Not exact matches

Parthenogenesis occurs naturally in many plants, some invertebrate animal species (including nematodes, water fleas, some scorpions, aphids, some bees, some Phasmida and parasitic wasps) and a few vertebrates (such as some fish, amphibians, reptiles and very rarely birds.

In a little lesser degree the behavior of lower vertebrates allows the conclusion that these animals have sensations, feelings and memory.

We are swimming, along with every other vertebrate, in the sea of the Animal Kingdom.

There is no such «direct» evolution: animals, bacteria, and algae have a common ancestor from which they have diverged, as can be shown by aligning and comparing amino acid sequences of proteins and nucleotide sequences of homologous ribosomal RNA molecules that are found in both bacteria and vertebrates.

The sequence of experience in a waking vertebrate animal is the paradigm case.

Given a system or composite of individuals, all on a comparable level, for instance molecular or cellular, then in some cases, given integration of activities (thus molecules in a cell, or cells in a vertebrate animal), there may be what Leibniz called a «dominant monad» or what Whitehead calls a «society of presiding occasions.»

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 humankind.

«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.

This substance is wide spread in vertebrates — and therefore in many farm animals — but missing in the human organism: N - Glycolylneuraminic acid (Neu5Gc).

Flammang agrees, saying what's most exciting about this is that it really underlines the idea that there is a vertebrate body plan that allows for changes that result in different kinds of animals, adding that the work «really unlocks a way of understanding the differences between organisms.»

Because skates are an evolutionarily ancient animal, that means the neurons essential for walking originated in species that separated from other four - legged vertebrates, or tetrapods, about 420 million years ago.

The «Tully monster,» an ancient animal that had long defied classification, was in fact a vertebrate, two groups of scientists claimed.

«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.»

Several of the network genes Volkan and her team identified have counterparts in humans and other vertebrates, which suggests the same basic mechanism could be at work in building the nervous system in other animals too.

But last week, at the annual meeting of the Society for Vertebrate Paleontology in Calgary, Canada, a team of scientists suggested a different killer: harmful algal blooms in the very water that had lured the animals.

Horner and his experienced colleagues — a structural geologist; a stratigrapher; a taphonomist (one who studies what happens to animals after they die); paleontologists specializing in vertebrate, mammalian, plant, and mollusk fossils; a molecular paleontologist; and an expert on paleomagnetism — are surveying all the fauna and flora that existed during the Hell Creek period (and that survived as fossils), the ways they interacted, and how they may have evolved.

«Among other proteins, we managed to find collagen, one of the most important proteins in the bodies of animals in general, and in vertebrates in particular.»

Since the sexual reproduction stage of malaria only occurs in insects, Poinar said in the new study that they must be considered the primary hosts of the disease, not the vertebrate animals that they infect with disease - causing protozoa.

Wear patterns suggest its owner chewed on hard or bony animals like the frogs and turtles whose fossils were found in the same quarry in Queensland, Australia (Journal of Vertebrate Paleontology, vol 33, p1).

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

The extinction that ended the Devonian Era 359 million years ago created opportunities quickly exploited by a formerly rare and unremarkable group of fish that went on to become — in terms of the sheer number of species — the most successful vertebrates (backboned animals) on the planet today: the ray - finned fish.

Growth hormone is a polypeptide hormone synthesised and secreted by the anterior pituitary gland which stimulates growth and cell reproduction in humans and other vertebrate animals.

For the first time, researchers have investigated the cheetah's extraordinary sensory abilities by analyzing the speedy animal's inner ear, an organ that is essential for maintaining body balance and adapting head posture during movement in most vertebrates.

But «Itchy» was no reptile: The animal, known from two partial skulls and described in July in the Journal of Vertebrate Paleontology, was actually an ancient mammal relative.

The mammals are the class of vertebrate animals characterized by the production of milk in females for the nourishment of young, from mammary glands present on most species and specialized skin glands in monotremes that seep or ooze milk; the presence of hair or fur; specialized teeth; three minute bones within the ear; the presence of a neocortex region in the brain; and endothermic or «warm - blooded» bodies.

In their first paper, published in the Journal of Vertebrate Paleontology in 1997, Schweitzer, Horner, and colleagues reported that spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal boneIn their first paper, published in the Journal of Vertebrate Paleontology in 1997, Schweitzer, Horner, and colleagues reported that spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal bonein the Journal of Vertebrate Paleontology in 1997, Schweitzer, Horner, and colleagues reported that spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal bonein 1997, Schweitzer, Horner, and colleagues reported that spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal bonein modern animal bones.

Jaws and teeth have been important innovations in the evolution of vertebrate animals.

Small fossils about 220 million years old found along steep red slopes in Colorado represent a near - relative of modern animals called caecilians, says vertebrate paleontologist Adam Huttenlocker of the University of Southern California in Los Angeles.

Generations of biology students have been convinced — in part because of drawings done 123 years ago by the German biologist Ernst Haeckel — that vertebrate embryos of different animals pass through an identical stage of development.

Their findings suggest that even the earliest animals had the makings of both vertebrate and invertebrate visual systems, and that some of the photoreceptor cells in the invertebrate brain were transformed through a series of steps into vertebrate eyes.

Read previous Zoologger columns: Horror fly returns from the dead, Even parasitic worms have a divided society, Shrimp plays chicken with its sex change, Death by world's longest animal, Live birth, evolving before our eyes, Sympathy for the piranha, The world's most fecund vertebrate, Whale - eater's helpful sulphur - powered guests, Horror lizard squirts tears of blood, Secret to long life found... in a baby dragon

Some animals — for instance the cyclothone, the most common vertebrate in the world — even use light as camouflage during the day as they move about more than 1,000 feet beneath the surface.

A report published in March in the journal Trends in Genetics revealed that the lizardlike native of New Zealand has undergone the fastest rate of molecular evolution of any vertebrate animal studied thus far.

In Carnivore Minds: Who these fearsome animals really are (Yale University Press), trans - species psychologist Gay Bradshaw deliberately ignores this advice to get under the skin of seven vertebrate predators.

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.

Read previous Zoologger columns: How weakness makes the crayfish stronger, The heaviest animal in the air, Ancient air - breathing, triple - jawed fish, Horror fly returns from the dead, Even parasitic worms have a divided society, Shrimp plays chicken with its sex change, Death by world's longest animal, Live birth, evolving before our eyes, Sympathy for the piranha, The world's most fecund vertebrate.

According to Strausfeld, confirmation of this shared ground pattern in the vertebrate hippocampus would suggest that it originated from a very ancient common ancestor likely to have lived about 600 million years ago just before the Cambrian explosion, a relatively short period when most major animal phyla emerged.

In existing vertebrates, genome size correlates very closely with bone cell size, so Organ used the size of dinosaur bone cells to predict how much genetic material the extinct animals possessed.

The team looked at an outer surface protein of B. burgdorferi found in ticks — which can give clues about the vertebrate host — as well as the probabilities that different host species transmit the microbe during a tick bite, the number of larvae feeding on the animals, and population densities.

While we only get to see the vertebrate collection — missing the first diverse animal fauna of Ediacara — it would be hard to cover a broader realm in so much detail.

In Britain, procedures likely to harm vertebrate animals can not be performed in schoolIn Britain, procedures likely to harm vertebrate animals can not be performed in schoolin schools.

Around 390 million years ago, the first vertebrate animals moved from water onto land, necessitating changes in their musculoskeletal systems to permit a terrestrial life.

All major groups of animals — an entire kingdom of multicellular life that today includes insects, worms, shellfish, starfish, sea anemones, coral, jellyfish, and vertebrates like us — bloomed suddenly in the fossil record during an evolutionary extravaganza known as the Cambrian explosion, which occurred 530 million years ago.

«As soon as you're missing a single species in your data matrix, you may be missing a key function that is only represented by that species,» says Jetz, who has studied functional traits in plants and vertebrate animals, particularly birds.

«Branchial rays will figure prominently in the story of the evolutionary origin of vertebrate animal appendages, either by shedding light on the evolutionary antecedent of paired fins / limbs, or by teaching us about the genetic mechanisms that animals can use to invent new appendages,» Gillis says.

A new study overturns a long - held theory about how these asymmetries develop, and the researchers say their work could help explain left - right asymmetries in other animals, such as the position and shape of the heart and liver in humans and other vertebrates.