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Pseudis paradoxa, known as the paradoxical frog or shrinking frog, is a species of hylid frog from South America. [2] Its name refers to the very large—up to 27 cm (11 in) long—tadpole (the world's longest), which in turn "shrinks" during metamorphosis into an ordinary-sized frog, only about a quarter or third of its former length.
The tadpoles are fully developed and ready to undergo metamorphosis at about two months old. [1] [7] There is evidence that suggests they can produce a second clutch in the same reproductive season allowing for two sets of eggs. [10] Pine woods treefrog tadpoles may exhibit predator-induced phenotypic plasticity.
Tadpoles survive on algae and will occasionally eat other tadpoles, [13] and on rare occasions, recently metamorphosed juveniles. [15] After metamorphosis , froglets are between 0.55 and 0.67 inches (14 and 17 mm) long.
Pseudis is a genus of South American frogs (swimming frogs) in the family Hylidae. [1] They are often common and frequently heard, but easily overlooked because of their camouflage and lifestyle, living in lakes, ponds, marshes and similar waters with extensive aquatic vegetation, often sitting at the surface among plants or on floating plants, but rapidly diving if disturbed.
Tadpoles of H. rosenbergi undergo metamorphosis at a size of 21mm SVL, approximately 40 days after fertilization, resulting in extremely large fat bodies and visibly undifferentiated gonads. [6] These froglets are covered with many small dark spots and have much less webbing in the fingers and toes as compared to adult frogs. [ 6 ]
Tadpole In eastern Victoria. The southern brown tree frog (Litoria ewingii), also known as the brown tree frog, whistling tree frog, or Ewing's tree frog, [2] is a species of tree frog native to Australia: most of southern Victoria, eastern South Australia, southern New South Wales from about Ulladulla—although this species is reported to occur further north—and throughout Tasmania ...
The species is especially vulnerable to predation when living in temporary ponds compared to permanent waters. To combat predation, green tree frog tadpoles may increase hiding behavior while in water to avoid capture. [7] [27] The American green tree frog is also prone to a few parasites, including nematodes, protozoans, and trematodes. [28]
The female grey foam-nest tree frog begins the process of reproduction by producing a thick mucus-like fluid from its cloaca (a cavity at the end of the digestive tract in amphibians). During this process, the frog uses its hind legs to whip the mucus into elastic froth that will eventually serve as physical protection for the developing eggs.