Sentences with phrase «of these amphibians with»

According to the scientist, the results reveal that the populations of these amphibians with a tradition of coexisting with the predator for 30 years (between 10 and 15 generations of frogs) present a pattern of activity that is totally different from the populations with less coexistence or no coexistence with the red swamp crayfish.

Not exact matches

A human fetus goes through the entire evolutionary process in 9 months, from simple multi-cellular life, through amphibian (some children are born with webbing still between their fingers and toes, like a frog), through mammalia and primates (we even have tails, of which the coccyx is a remainder).

«In its 4.6 billion years circling the sun, the Earth has harbored an increasing diversity of life forms: for the last 3.6 billion years, simple cells (prokaryotes); for the last 3.4 billion years, cyanobacteria performing ph - otosynthesis; for the last 2 billion years, complex cells (eukaryotes); for the last 1 billion years, multicellular life; for the last 600 million years, simple animals; for the last 550 million years, bilaterians, animals with a front and a back; for the last 500 million years, fish and proto - amphibians; for the last 475 million years, land plants; for the last 400 million years, insects and seeds; for the last 360 million years, amphibians; for the last 300 million years, reptiles; for the last 200 million years, mammals; for the last 150 million years, birds; for the last 130 million years, flowers; for the last 60 million years, the primates, for the last 20 million years, the family H - ominidae (great apes); for the last 2.5 million years, the genus H - omo (human predecessors); for the last 200,000 years, anatomically modern humans.»

Conservationist Norman Myers, author of The Sinking Ark: A New Look at the Problem of Disappearing Species (Pergamon, 1979), estimates that with the advent of technology between 1600 and 1900, an average of one species of bird or mammal (little is known about reptiles, amphibians, fishes, invertebrates and plants) disappeared every four years, compared to one every 1,000 years during the «great dying» of the dinosaurs.

Come face - to - face with reptiles and amphibians at the North Carolina Museum of Natural Sciences March 17.

Two Shedd Aquarium researchers published a study in the Journal of Great Lakes Research last weekend on a little - known amphibian that resides in the Great Lakes region, the mudpuppy (Necturus maculosus), as part of a multi-year research project in partnership with Southern Illinois University's Department of Zoology, Center for Ecology, and Cooperative Wildlife Research Laboratory.

With this package you can see 32,000 aquatic animals — 1,500 species of fishes, reptiles, amphibians, invertebrates, birds and mammals from waters around the world — during your stay at the Hilton Chicago.

Though there were no fences in the Permian, climatic conditions conspired to corral Bunostegos — along with several other reptiles, amphibians, and plants — and keep them constrained to the central area of the supercontinent.

Common garter snakes, along with four other snake species, have evolved the ability to eat extremely toxic species such as the rough - skinned newt — amphibians that would kill a human predator — thanks to at least 100 million years of evolution, according to Joel McGlothlin, an assistant professor of biological sciences in the College of Science and a Fralin Life Science Institute affiliate.

Although we did most of the studies in frogs, we also followed with chick embryos and found cyclopean eyes, which is important because amphibians and birds are very different, says Rao.

Amphibians are the most threatened vertebrates in the world, with over 40 % at risk of extinction.

Most of Britain's fast - declining populations of reptiles and amphibians, such as the great crested newt, live around small ponds that are unlikely to be listed, let alone protected, with the existing highly bureaucratic system of SSSI designation.

A team of scientists with Spanish participants studied how heat waves affect the dietary choices of three species of amphibian found on the Iberian Peninsula: the European tree frog, the Mediterranean tree frog and the Iberian painted frog.

Glaw, who has been going to Madagascar to research its ever - expanding list of amphibians and reptiles for a quarter century, said that B. micra may represent the limit of miniaturization possible for a vertebrate with complex eyes, but said it's impossible to know for sure since each time scientists have proclaimed the discovery of the tiniest one yet, another, tinier species appears.

With over 4 % of the planet's named frog species, Madagascar is one of the most incredible amphibian hotspots in the world.

Worldwide, as water temperatures rise and ponds dry, exposing amphibians and their eggs to ultraviolet radiation and disease, a third of those species are threatened with extinction.

Populations of this unique species, currently known as highly threatened, were previously considered to have remained relatively stable in the face of the disease that has ravaged many amphibian species worldwide, but the frogs may have been infected over a decade ago, with the impacts only recently observed.

Faced with a variety of threats, from disease to habitat loss, about half of the world's roughly 7,000 species of amphibian are threatened with extinction — and more than 250 of those species haven't been seen since the turn of this century.

And human beings probably aren't endowed with a functionalvomeronasal organ — an anatomic sensor of pheromone signals that is foundin many amphibians, reptiles, and mammals.

Now, developmental endocrinologist Tyrone Hayes and colleagues at the University of California, Berkeley, have raised tadpoles of the African clawed frog, Xenopus laevis — the lab rat of the amphibian world — in water with levels of atrazine varying from 0.01 to 200 parts per billion (ppb).

37 %: freshwater fish species threatened with extinction (amphibians: 23 %) in Western and Central Europe and western parts of Eastern Europe

«Africa is the last place on Earth with a wide range of large mammals, yet today there are more African plants, fish, amphibians, reptiles, birds and large mammals threatened than ever before by a range of both human - induced and natural causes.»

Almost a third of the 5743 known amphibian species are under threat worldwide, compared with just under a quarter of mammals and almost an eighth of birds.

If the suggested statuses are approved, together with the updated declines of previously abundant in the area species, the proportion of the threatened would rise to nearly half (48 %) of the Mount Oku's entire amphibian fauna.

«Twenty - five frogs added to the amphibian fauna of Mount Oku, Cameroon: Staggering 44 % of the amphibians in the mountain are threatened with extinction, researchers find.»

Among the team's findings was evidence of a giant salamander, a group of tailed amphibians with a length of up to 1.80 meters that today are only found in rainy regions of Japan and China.

A new detailed embryological study in birds reveals that their ankle has re-evolved an amphibian - like developmental pattern, with three separate elements, one of which becomes the dinosaurian ascending process

The Siberian Salamander, four species of brown frogs (genus Rana), four species of toads, one green frog (genus Pelophylax), two lizards and five species of snakes — these 17 species represent the entire recent amphibian and reptile fauna of Western Siberia, which therefore counts among the regions with the lowest species diversity regarding these animal classes in all of Eurasia and Northern Africa.

A Panamanian park has lost around 40 percent of its amphibian species in the past decade, with some dying out before biologists had even learned of their existence, according to research published July 19 in the Proceedings of the National Academies of Science.

Of the total new species of amphibians (1581) described globally between the years 2006 - 2015, the highest number were from the Brazilian Atlantic Forest (approximately 182) followed by the Western Ghats - Sri Lanka biodiversity hotspot (approximately 159), with 103 species described alone from the Western Ghats regioOf the total new species of amphibians (1581) described globally between the years 2006 - 2015, the highest number were from the Brazilian Atlantic Forest (approximately 182) followed by the Western Ghats - Sri Lanka biodiversity hotspot (approximately 159), with 103 species described alone from the Western Ghats regioof amphibians (1581) described globally between the years 2006 - 2015, the highest number were from the Brazilian Atlantic Forest (approximately 182) followed by the Western Ghats - Sri Lanka biodiversity hotspot (approximately 159), with 103 species described alone from the Western Ghats region.

As with Newark, they include plenty of amphibians and crocodilian reptiles — even some small dinosaurs called theropods — but not a single prosauropod, say Olsen and Irmis.

Co-author Dr Augusto Coppi, lecturer in Veterinary Anatomy and Stereologist at the University of Surrey, said: «The liver function of this amphibian, Siphonops annulatus, may provide us with a unique opportunity to solve one of the most devastating illnesses of the liver.

Nearly one - third of the world's amphibians — more than 1,800 species of frogs, toads, salamanders and newts — are threatened with extinction or already extinct.

Local and regional precipitation trends are nearly as important as temperature in determining the fate of many animals, he explained, and that's especially true with moisture - sensitive creatures such as amphibians.

Up to 83 % of birds, 66 % of amphibians and 70 % of corals that were identified as highly vulnerable to the impacts of climate change are not currently considered threatened with extinction on The IUCN Red List of Threatened Species.

Using bioinformatics, the computer wades through the information to give us a full complex of what's in that sample — whether it be invertebrates, fish, reptiles, amphibians, birds — anything that may be coming into contact with the water or soil.

Yet over the ages, evolution has endowed females of certain species of amphibians, reptiles and fish with the ability to clone themselves, and perpetuate offspring without males.

As a child, Pasmans, 42, played with newts in the ditches of a park near his home in the suburbs of Antwerp, Belgium, and he has been fascinated by amphibians and reptiles ever since.

He ponders nighttime oddities of nature, such as the Texas blind salamander, a cave - dwelling semitranslucent amphibian that has no need for night vision — a trait that it apparently shares with about 40 percent of Americans, who, being bombarded with light pollution, never use theirs.

Such a sudden and rapid depletion of salamander species, especially ones with dense populations such as the eastern newt, could have «cascading effects» in affected ecosystems, says Michael Lannoo, a herpetologist at Indiana University and expert on amphibian declines.

We found that the giant panda's geographical range overlaps with 70 percent of forest bird species, 70 percent of forest mammals, and 31 percent of forest amphibian species found only in mainland China.»

Simons is working with the U.S. Geological Survey — in charge of the amphibian monitoring — to account for these false positives, and to better train the volunteers — so they don't write down «chorus frog» [Chorus Frog sound] when all there really was were pickerel frogs.

Anthony Mescher, a cell biologist at the Indiana University School of Medicine with expertise in amphibian regeneration, thinks Heber - Katz's mice do repair injuries better than ordinary mice.

Harrison's results demonstrated that the developing amphibian nervous system is remarkably flexible in adapting to such novel situations, even to the point of accelerating the growth of nerve fibers in a host species to keep pace with the faster - growing limb of a smaller donor species.

Finding such a plethora of frogs — despite the fact that Sri Lanka has already lost 95 percent of its original rain forest habitat — puts the island's amphibian diversity on par with that of tropical islands nearly 10 times its size, such as Borneo and Madagascar.

As I reported in a feature story in Scientific American last December, some fungi have been behaving badly of late, attacking bats, plants, amphibians, reptiles, and people with gusto, driving many species to extinction and others to the brink.

A relatively small number of species are blamed: cats, rats and goats are among the most common offenders, along with microorganisms like the amphibian - killing chytrid fungus and the avian malaria parasite.

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).

Hayes is interested in the impact of chemical contaminants on environmental health and public health, with a specific interest in the role of pesticides in global amphibian declines and environmental justice concerns associated with targeted exposure of racial and ethnic minorities to endocrine disruptors and the role that exposure plays in health care disparities.

But most of the toads transported by people are just stowaways, with the «taxi - drivers» having no idea that they are moving these unwelcome amphibians around the country.