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Amphibian Ark is an organization that was formed to implement the ex-situ conservation recommendations of this plan, and they have been working with zoos and aquaria around the world, encouraging them to create assurance colonies of threatened amphibians. [178] One such project is the Panama Amphibian Rescue and Conservation Project that built ...
In one experiment, the foster father ingested 8 tadpoles, and after brooding had been completed, the foster father produced 2 frogs. This means that the metamorphosis process is not 100% efficient. This observation is consistent across studies and there exist some proposed explanations for the alloparental behavior, which is especially rare ...
Frogs account for around 88% of extant amphibian species. They are also one of the five most diverse vertebrate orders. Warty frog species tend to be called toads, but the distinction between frogs and toads is informal, not from taxonomy or evolutionary history.
Herpetology (from Greek ἑρπετόν herpetón, meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (including snakes, lizards, turtles, crocodilians, and tuataras).
Niche models are a notable class of CRMs which are described by the system of coupled ordinary differential equations, [7] [8] = (), =, …,, = + = (), =, …,, where (, …,) is a vector abbreviation for resource abundances, is the per-capita growth rate of species , is the growth rate of species in the absence of consumption, and is the rate per unit species population that species depletes ...
Traditionally considered a subclass of the class Amphibia, modern classification systems recognize that labyrinthodonts are not a formal natural group exclusive of other tetrapods. Instead, they consistute an evolutionary grade (a paraphyletic group ), ancestral to living tetrapods such as lissamphibians (modern amphibians) and amniotes ...
Amphibian, a vertebrate animal of the class Amphibia (many of which live on land and breed in water) Amphibious caterpillar; Amphibious fish, a fish that is able to leave water for extended periods of time; Amphibious insect, an insect which lives in the air or on land and breeds in water; Amphibious rat (disambiguation)
Caecilians have small or absent eyes, with only a single known class of photoreceptors, and their vision is limited to dark-light perception. [17] [18] Unlike other modern amphibians (frogs and salamanders) the skull is compact and solid, with few large openings between plate-like cranial bones. The snout is pointed and bullet-shaped, used to ...