Sentences with phrase «toad tadpoles»

By doubling the density of wood frog and American toad tadpoles, we mimicked these high - density environments to simulate increased competition for food resources among tadpoles.

Once the communities were established, we added wood frog and American toad tadpoles at constant densities.

The same is true for our tadpole trapping - the tadpoles of native frogs are repelled by our «bait» (the poison from cane toads) whereas cane toad tadpoles are strongly attracted.

Michael was the person who discovered that a chemical in toad eggs attracts cannibalistic toad tadpoles - and the person who ended up identifying the exact nature of that chemical (in collaboration with other members of TEAM BUFO, especially Professor Rob Capon from the University of Queensland).

While most of the rest of us look at toads on dry land, Michael conducts field and laboratory studies on toad tadpoles, and their interactions with native species.

We have now identified the exact chemicals involved in that process, and used them as bait to attract cane toad tadpoles (but not frog tadpoles) into traps, for toad control.

Michael is undoubtedly THE expert on cane toad tadpoles and especially, their effects on native tadpoles and other kinds of animals that encounter them.

Competition between toad tadpoles and native tadpoles also may be important, because they eat the same kinds of food.

However, they rarely try to eat live toad tadpoles, so the big poisoning risk to native tadpoles is from toad eggs not toad tadpoles.

Elisa Cabrera - Gusman (a graduate student with TEAM BUFO) found that water beetles and water bugs love to eat cane toad tadpoles, and are not affected by the toads» poison.

We found a special chemical that attracts cane toad tadpoles (but not frog tadpoles), so we can use it to catch toad tadpoles.

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.

When the researchers put cane toad tadpoles, native frog tadpoles, fish, and leeches in water containing scraps of cane toad tissue, they found that most of the native animals died within about a day (and sometimes much faster)-- even when they couldn't touch the tissue directly.

Michael and Elisa Cabrera - Guzmán ran experiments to see exactly how the tadpoles of different kinds of frogs react to cane toad tadpole chemicals, and how the toad tadpoles react to the chemicals produced by frog tadpoles.

We also observed reduced American toad tadpole activity in communities exposed to the highest NaCl concentration, a sublethal effect.

Not exact matches

Both the tadpoles and the adult toads are highly toxic to most animals, so the snakes, lizards, and crocodiles that chomp down on toads don't live to regret it.

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.

«They» were cannibalistic spadefoot toad larvae, commonly known as tadpoles.

But the tadpoles of the Mallorcan midwife toad have set a new record for «developmental plasticity», according to a study reported here on 15 July at the annual meeting of the Society of Conservation Biology.

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.

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.

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.

Cane toads produce many more eggs in a clutch than do any of the native frogs, and so a single clutch can result in many thousands of small black tadpoles in a pond.

It turned out that the amount and diversity of poisons were high in eggs, then decreased through tadpole life, then started to increase again after metamorphosis (when the tadpole turned into a small toad).

The tadpole - attractant can be made from the poison secreted by adult toads, and we are zeroing in on the suppression pheromone in our current studies.

In laboratory trials, most native tadpoles will try to eat toad eggs, and die as a result.

There are two likely ways this could happen: either by poisoning the other animals (if they try to eat toad eggs or tadpoles); or by competing with them for food.

Michael's specialty is the ecology of the aquatic stage of the toads - the eggs and tadpoles.

The most common victims were native tadpoles, who died when they tried to eat toad eggs.

One of the major complications in understanding cane toads and their impact is the toad's complicated life - history — including eggs and tadpoles in the water as well as larger toads hopping around on dry land.

The basic idea is to fool the toads» immune systems into thinking that adult toad proteins are foreign, and so mounting an attack on them as the tadpole develops into a toadlet.