policies regarding human subjects,
live vertebrate animal subjects in research, and safe laboratory practices
«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.
Not exact matches
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 humank
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 humank
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.
«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.»
Vertebrate evolution generally proceeds at far less than a snail's pace, making study of the process in
living animals difficult at best.
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
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.
Finds such as the newly discovered Birgeria species and the fossils of other
vertebrates now show that so - called apex predators (
animals at the very top of the food chain) already
lived early after the mass extinction.
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.
Read previous Zoologger columns: 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, Whale - eater's helpful sulphur - powered guests, Horror lizard squirts tears of blood.
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.
These and other details about the two
animals that
lived about 142 million years ago were presented by biologist Pernille Venø Troelsen from University of Southern Denmark on July 10 2015 at XIII Annual Meeting of the European Association of
Vertebrate Paleontologists in Opole, Poland.
According to many biologists, this happened in a worm - like creature known as the urbilaterian, the ancestor of most
living animals including
vertebrates, molluscs and insects.
Soon, plant - eating
animal life followed (including Arthropods such as the scorpion - like Eurypterids that moved from marine waters into brackish then fresh water — some species becoming amphibious and emerging onto land for part of their
life cycle after becoming capable of breathing in both water and air — which eventually evolved into insects, and finally, by 379 million years ago,
animals with backbones known as «
vertebrates» which evolved from Fishes that moved onto land to evolve into Amphibians and eventually into Reptiles, Dinosaurs, Birds, and Mammals — Niedzwiedzki et al, 2010).
One of the great unknowns in the history of
life is the part that Antarctica may have played in the evolution and migration of
vertebrates (backboned
animals) during the key time interval that spans the end of the Age of Dinosaurs and the beginning of the Age of Mammals (the Cretaceous — Paleogene or K — Pg, between 100 and 40 million years ago).
Taking advantage of fly genetics The research will combine the strength of the fly system (
animals that are short
lived but complex enough to model regenerative activity in
vertebrates) with genetic studies in mice to understand the role of mTOR signaling in maintaining the health of adult stem cells in both species.
The evolution of vision in
vertebrates is an important theme in the history of
animal life, however, aside from the calcified lenses of fossilised arthropods, other parts of the visual system are not usually preserved in the fossil record because the soft tissue of the eye and brain decays rapidly days after death.
KNOXVILLE — 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.
Noting that Spencer compared the role of Parliament to that of the «cerebral masses in a
vertebrate animal,» Huxley applauded Spencer for the biological analogy, but criticized his conclusion that just as the brain «averages the interests of
life, physical, intellectual, moral, social,» the appropriate sphere of government is to average the interests of various classes in society, not to do anything to improve or alter their relations.
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.
These common parasites, which have only a few cells,
live inside both
vertebrate and invertebrate
animals.