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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 fish family Psychrolutidae (commonly known as blobfishes, [2] south america river teacher, [2] flathead sculpins, [2] or tadpole sculpins [2]) contains over 35 recognized species in 8 genera. [3] This family consists of bottom-dwelling marine sculpins shaped like tadpoles , with large heads and bodies that taper back into small, flat tails.
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After multiple experiments, Paul Székely, Marian Tudor, and Dan Cogalniceanu concluded that tadpole development is influenced by hydroperiod, or the period in which an area is full of water. [ citation needed ] Since American spadefoot toads breed in shallow waters, they are under "constant stress from drying waters, increasing temperatures ...
A magical underwater image of western toad tadpoles has won the 2024 Wildlife Photographer of the Year competition.
As tadpoles, the squirrel tree frog is preyed upon by dragonfly nymphs, giant water bugs, predatory fish and newts. [2] [3] Once the tadpoles metamorphose, the predators of the frogs change to small mammals, other frogs, snakes, birds. [2] To reduce the danger of being eaten as tadpoles, they use dense vegetation as cover. [4]
Tadpoles require cool streams with smooth-surfaced stones with a minimum diameter of 55 mm (2.2 in). Tadpoles probably spend most of their time attached to such substrates by a large oral sucker . The large, sucker-like mouth parts of the tadpoles are a second distinctive feature of the species, enabling survival in turbulent water unsuitable ...
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 ...