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A tadpole or polliwog (also spelled pollywog) is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians, such as a lateral line, gills and swimming tails.
Upon hatching, the tadpoles remain on the moist surfaces, undergoing metamorphosis without ever entering any standing bodies of water. In the 2010 study, all of the egg clutches and the tadpoles were found at least 3 m (9.8 ft) from the nearest pool of water. The eggs and tadpoles are instead kept moist by dripping water from leaves and ...
Metamorphosis of Mixophyes tadpoles may take as long as fifteen months. The sandhill frog (Arenophryne rotunda) lives in sand dunes between Shark Bay and Kalbarri National Park in Western Australia. This area has very little free-standing water and therefore this species has adapted another way of tadpole development.
Although females lay the eggs, male Darwin's frogs carry and brood the tadpoles until they are ready to be "born." - Benjamin Tapley. Even once fully grown, Darwin’s frogs are tiny, weighing ...
During the final stages of transformation when the tadpoles have four limbs and a tail, they stop feeding for a short time while their mouths widen and their digestive systems adjust from herbivorous to carnivorous. Pacific tree frogs mature quickly, and usually mate the season after metamorphosis. They can live up to eight years in captivity.
This is interpreted as an adaptation that allows the tadpoles to cling to the rocks until the tail is almost fully resorbed. [8] In Limnonectes limborgi, the tadpoles are free-living but non-feeding ("nidicolous") and retain their yolk sac until stage 37, at least. [9] Direct-developing frogs hatch directly as froglets, without free-living ...
After hatching, the tadpoles nest in the male's back, all without the need for standing or flowing water. However, Hochstetter's frog lays its eggs in shallow ponds and has free-living tadpoles, although they do not swim far from the place of hatching, or even feed, before metamorphosing into adult frogs. [ 6 ]
Fletcher's frog eggs can survive and even continue developing for several days in the absence of free-standing water. Although eggs in the periphery of the nest structure dried more rapidly, the embryos in the center were preserved long enough until additional rainfall replenished the well, helping to reduce larvae death.