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38-day-old tadpole. The Baja California chorus frog (Pseudacris hypochondriaca) is a cathemeral species of treefrog of Western North America. [1] It was formerly considered as a population of the Pacific chorus frog (Pseudacris regilla), but was split and raised to species status in 2006.
They lack beak-like mandibles and the specialized labial tooth generally associated with most tadpoles. The newly transformed toads range from 7–12 mm (0.3-0.5 in) in body length. They are found to share the same habitat as adults, and the older stages of the tadpoles are also toxic to many predators. The males reach sexual maturity in a year ...
(b) Female with tadpoles removed from the oviduct. (c) Adult male calling by a stream; two tadpoles visible within the circle; (d) dorsal and ventral views of tadpoles released by a female at the moment of capture. Limnonectes larvaepartus is a species of fanged frog in the family Dicroglossidae endemic to northern and western Sulawesi ...
The juvenile may be a tadpole for 3 to 4 years before undergoing metamorphosis. [8] However, this rate heavily varies depending on the temperature and elevation of the area. [7] There are two classes of tadpoles: first year tadpoles and second year tadpoles. Metamorphosis tends to happen the second summer of tadpole life.
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.
American bullfrog tadpoles have also "showed a preference for habitats containing structure." [45] This may reflect a lesser number of predators in these locations. As they grow, they tend to move into deeper water. The tadpoles initially have three pairs of external gills and several rows of labial teeth.