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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.
T. taophora tadpoles are able to survive in close to maximal critical temperatures reported for all anurans, but still stay below values reported for other species’ tadpoles. The highest recorded temperature of activity reached was 36.4 degrees Celsius, which falls in the higher end for subtropical species.
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.
Indirana semipalmata tadpole,on a plastic sheet used to cover a shed from, Hosamata, Puttur, Karnataka, India Tadpole from Coorg, India on tree bark. The ecology and biology of Indirana semipalmata has not been extensively studied. It is a terrestrial species generally found on vegetation beside the banks of streams and rivers (riparian habitats).
Tadpoles are typically herbivorous, feeding mostly on algae, including diatoms filtered from the water through the gills. Some species are carnivorous at the tadpole stage, eating insects, smaller tadpoles, and fish. The Cuban tree frog (Osteopilus septentrionalis) is one of a number of species in which the tadpoles can be cannibalistic ...
Tadpoles rapidly mature into toads and must bury themselves before desert conditions revert to normal. The species of spadefoot toads are found in different locations across North America. The eastern spadefoot is the only species found east of the Mississippi River, ranging from New England to southern Florida.
Tadpole: 25 to 41: Longest part of larval period that is marked by growth and development of limbs. The generic term "larvae" often refers to these stages. Metamorph: 42 to 46: Loss of larval characters and development of adult structures; typically associated with the transition from the aquatic to the terrestrial habitats
However, most tetrapod species today are amniotes, most of which are terrestrial tetrapods whose branch evolved from earlier tetrapods early in the Late Carboniferous. The key innovation in amniotes over amphibians is the amnion, which enables the eggs to retain their aqueous contents on land, rather than needing to stay in water.