Sentences with phrase «tadpoles with»

There are mail - order companies that sell «grow your own tadpole» kits that typically supply bullfrog or leopard frog tadpoles with the kit.

► We see many tadpoles with pointed teeth and several bite a mouse's behind.

The blind tadpoles with no eyes still reacted when the light changed.

In contrast, about 10 % of tadpoles with transplanted eyes were able to learn to avoid the red side of the petri dish, compared with about 40 % of the tadpoles with intact eyes.

The friar noted such exotic variations as maguey worms with a sauce of small chiles, newt with yellow chiles, and tadpoles with chiltecpitl.

The friar noted such exotic variations as maguey worms with a sauce of small chiles, newt with yellow chiles, and tadpoles with

Month Two: One Inch Tadpole With a big head and tail, and with arms, legs, fingers and toes that are beginning to form, Junior looks like a tadpole transforming into a frog.

Its outline is shaped like a tadpole with its tail running eastward.

Not exact matches

When one comes nearer, however, all the standing water is quite clear and filled with small black tadpoles.

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Take this opportunity to practice some basic vocabulary such as eggs, tadpole, and frog with toddlers.

Tagged Children, Dirt and Health, Gardening, Gardening with Children, Kids to Parks Day, Mud Play, Nature, Nature Activities, Northside Shoes, Outdoor Play, Play, Spring, Tadpoles, Tidepools

In fact, Diapers by Chris and Tadpole Jones Diaper Supply pretty much exclusively do custom cloth diapers in lieu of setting up a store with weekly stockings.

Perhaps the most astonishing stage of pregnancy is that of the embryonic development as your unborn child goes from being the size of a sesame seed and looking like a tadpole to being the size of a kidney bean with some neck definition and tiny webbed fingers and toes.

Tadpole and Taper must have known they were being a bit fly, just as reporters who record private lunches with doddery old ex-ministers or Vince Cable's constituency surgery boasting about Rupert Murdoch know they are being fly.

Wood frog tadpoles aren't the only ones with a taste for blood — tadpoles of New Mexico spadefoot toads eat plants when they first hatch, but sometimes transform into voracious predators.

That suggests the tadpoles were competing with each other, trying to reach adulthood first.

In the lab, though, apparently all bets are off if the cannibals are deprived of food and then placed in a tank with other tadpoles.

So with frogs, for instance, she cut and pasted genes in experiments that sometimes led to the development of two - headed (or no - headed) tadpoles.

Co-orbital bodies that orbit the Sun in the same direction as a planet can follow trajectories (blue curves with arrows) that, from the perspective of the planet, look like tadpoles, horseshoes or «quasi-satellites.»

Beasley said that various species of trematodes penetrate tadpoles, sometimes killing them and at other times weakening them with tissue damage, kidney failure, or severe limb deformities when the tadpoles develop into frogs.

The tadpoles are elongated with powerful tails to cope with fast - flowing water.

And in related experiments, he made tadpoles grow eyes on their stomachs by changing the electrical properties of cells to mimic those associated with eye formation.

When the viperine snakes arrived with Roman bathers, the tadpoles already had a way to cope, he speculates.

When Moore put a snake in a bag into a pond with these fatter tadpoles, they adjusted their development to streamline themselves within only 4 weeks in response to the threat.

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).

1962 John Gurdon removes the nucleus from the egg cell of a frog and replaces it with a nucleus of a mature cell from a tadpole.

In these tadpoles, the eyes» axons almost universally connected with either the spinal cord or the gut.

Chivers and his team also taught frog embryos to fear the fire - bellied newt, a potential predator, by exposing frog eggs to the newt's scent combined with that of crushed tadpoles.

Tadpoles from six countries across three continents were tested for «protists» — single celled microbes with complex cells which store their DNA in a nucleus, like human cells.

Only tadpoles whose transplanted eyes formed connections with their spinal cord managed to learn; eyes that instead connected to the gut were apparently useless.

In total, the researchers operated on 230 tadpoles and compared their performance in a light reaction test with similar numbers of intact tadpoles and blinded tadpoles without transplants.

Instead, they noticed that with the fluid sac deflated, 17 - centimeter - long snailfish looked more like tadpoles than fish, a body type that's not very efficient in water.

Prof Perissinotto and his NMMU colleague Dr Matthew Bird, together with water beetle specialist Prof David Bilton (Plymouth University), collected specimens ranging from 1 mm to almost 5 cm in length (the tadpole eaters).

Tadpoles of the Cascades frog prefer to associate with siblings, which they distinguish from nonsiblings.

When they created MR images of the tadpoles that grew from these embryos, bright spots indicated where the enzyme was active — in half the animal — and the spots correlated closely with standard stains of enzyme activity done by sectioning the tadpole, they report in the March Nature Biotechnology.

They were less likely to school and swim along with other tadpoles (a tadpole proxy for socialization, which is impaired in autism); they weren't as good at avoiding contact with animated images projected on to the bottom of their petri dishes; they didn't habituate to startling noises (another analog to autism in people); and induced seizures were more frequent and shorter than in normal tadpoles.

In addition, the tadpole model provides scientists with a way to gain important insight into the development of neurodevelopmental disorders more broadly, Aizenman said.

Predictably, the cane toad tadpoles were unperturbed by the poison - laced water; and in control experiments with uncontaminated freshwater, all the animals survived just fine.

Pools were surveyed three times a year to coincide with the various life stages of the toad: late spring for adult toads and eggs, early to mid-summer for tadpoles, and late summer for newly metamorphosed individuals.

The technique sheds light (literally) on how transplanted tissue interacts with the nervous system — only the tadpoles whose transplanted eyes connected to their spinal cord, rather than their gut, seemed to be able to see.

Relyea suspects the lethal ingredient in Roundup is not glyphosate, but polyethoxylated tallow amine (POEA), a surfactant that allows the herbicide to penetrate the waxy surfaces of plants and may interfere with the function of the tadpole gills.

To test this, Rick Relyea, a biologist at the University of Pittsburg in Pennsylvania, simulated a pond ecosystem by filling 1000 - liter tanks with well water, plankton, various tadpole species, and other organisms at the same densities found in nature.

A few years ago, he and colleagues got rid of Bd on the Spanish island of Mallorca by temporarily removing some 2000 tadpoles of the Mallorcan midwife toad (Alytes muletensis) and disinfecting their ponds with powerful chemicals.

The egg with the transplanted nucleus developed into a tadpole that was genetically identical to frog B.

(C) Whole tadpole bright field image overlayed with fluorescent image, showing flank eye (yellow box) on top of gut (dashed line).

The team studied the phenomenon by placing tadpoles in tanks with concentrations of sodium chloride similar to those of waterways near roads treated with road salt.

We are currently collaborating with biochemists to try to work out exactly what chemicals are important in attracting the tadpoles.Our «tadpole control» page talks about this exciting work.

We worked with Mattias Hagman (an earlier student and postdoc with Team Bufo), and with Dr. Andrew Hayes and Prof. Rob Capon at the University of Queensland, to measure the amount of poison in eggs, tadpoles and small toads.

Oikopleura dioica is the name of this organism with a body that resembles a tadpole and is up to one millimetre long.