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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.
It is endemic to central Vietnam and currently only known from Ngọc Linh Nature Reserve in the Kon Tum Province. [1] [3] Only one female and a series of tadpoles collected in 2009–2010 are known. [1] This species, together with Theloderma palliatum, was described by Australian and Vietnamese scientists in 2011. [4] [2]
Truyện Trê Cóc (The chronicle of the catfish and the frog) is a 398-line satirical poem written in Vietnam in the 13th Century. [1] In the poem a catfish steals the tadpoles of two frogs. The frogs appeal to the mandarin who orders the catfish imprisoned. However the wife of the catfish bribes the mandarin's assistant to have the case re ...
Tadpoles are highly vulnerable to being eaten by fish, newts, predatory diving beetles, and birds, particularly water birds, such as storks and herons and domestic ducks. Some tadpoles, including those of the cane toad (Rhinella marina), are poisonous. The tadpole stage may be as short as a week in explosive breeders or it may last through one ...
Tadpoles develop from the non-pigmented eggs, however fertilized and unfertilized eggs have no difference in the size or structure. [15] The eggs are white in color, along with having a thin and transparent covering on the outside shell of each egg, with diameters between 0.70 and 1.29 mm. [ 15 ] The tadpoles are long and dark-brown in colour.
Tadpoles grown in sibling groups metamorphosed faster than those that were kept in mixed groups. [4] Tadpoles have been shown to be able to recognize kin. [5] The 96h LC50 of commercial grade malathion for the tadpoles is 7.5 mg/L and sublethal levels of exposure can impair swimming. [6]
The microhylids of New Guinea and Australia completely bypass the tadpole stage, with direct development from egg to frog. The arboreal species can therefore lay the eggs within the trees, and never need venture to the ground. Where species do have tadpoles, these almost always lack the teeth or horny beaks typical of the tadpoles of other ...
Tomato frogs are any of the three species of genus Dyscophus (family Microhylidae): D. antongilii, D. insularis, or D. guineti. [1] Dyscophus is the only genus in subfamily Dyscophinae.