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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.
The species is now established in southern Florida and parts of the panhandle region, and can be found as far north as South Carolina. [ 5 ] The Cuban tree frog is known to hitchhike on shipments of potted plants, [ 18 ] vegetation, packaging, [ 17 ] boats, and other motorized vehicles. [ 5 ]
It is the most species-rich genus of catfish in North America, [1] native to the central and eastern United States, and adjacent parts of Canada. [2] Their fin spines contain a mild venom with a sting comparable to that of a honey bee. [1] Nearly half the species of madtom catfishes were described in a single comprehensive revision of the group.
The tadpole of this species is considered unpalatable to many species that would commonly predate on tadpoles. They also exhibit behaviors to avoid predation. To avoid fish, the tadpoles will move to stream margins in order to make them inaccessible to the fish. The tadpoles will also reduce activity after sensing a fish's chemical cues. [21]
This makes the species even more unique, as PLOS One said, because other frogs that skip the egg step typically give birth to froglets, or baby frogs, but these frogs still give birth to tadpoles.
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.
The tadpoles of these species have suckers enabling them to hold on to rocks after they hatch. Another unusual adaptation is found in some South American hylids, which brood the eggs on the back of the female. The tadpoles of most hylid species have laterally placed eyes and broad tails with narrow, filamentous tips. [7]
Tadpole 2015-04-16-12.04.26 ZS PMax (16571152244) (2) After they hatch, they remain tadpoles for two to three months before transforming into frogs and are ready to leave the water. [32] Following breeding in the spring, the spring peepers' larval stage lasts two to three months. [30] The spring peeper can live an estimated three years in the ...