A tree frog (or treefrog ) is any species of frog that spends a major portion of its lifespan in trees , known as an arboreal state. Several lineages of frogs among the Neobatrachia suborder have given rise to treefrogs, although they are not closely related to each other.
7-471: The blue-sided leaf frog ( Agalychnis annae ), also known as the orange-eyed leaf frog , is an endangered species of tree frog in the subfamily Phyllomedusinae native to the tropical rainforests of Costa Rica and Panama. The specific name annae honors Ann S. Duellman, the collector of the holotype and the describer's wife. This tree frog is known only from the Central Valley of Costa Rica, on
14-538: The Reserva Biológica Monteverde. The remnant sub-populations of this animal in Central Valley are being fragmented by urban development. This local extinction may be associated with climate change or with the fungus Batrachochytrium dendrobatidis which causes chytridiomycosis , a devastating disease among frog populations in Central America. Some individuals have tested positive for the fungus, yet
21-418: The branches and twigs in their habitats . While some reach 10 cm (4 in) or more, they are typically smaller and more slender than terrestrial frogs. Tree frogs typically have well-developed discs at the finger and toe tips, they rely on several attachment mechanisms that vary with circumstances, tree frogs require static and dynamic, adhesive and frictional, reversible and repeatable force generation;
28-644: The forest in which the frog lives has been cleared, so there are a number of subpopulations separated by coffee plantations, cultivated areas and urban areas. Agalychnis annae is fairly common in parts of the Central Valley, but in other undisturbed forests, like those in the Tapantí National Park and the Monteverde Biological Reserve , after it disappeared from pristine areas in 1980, it became uncommon except in some places. Also, this includes protected areas such as Parque Nacional Tapantí and
35-466: The periodic dehydration stress. As the name implies, these frogs are typically found in trees or other high-growing vegetation. They do not normally descend to the ground, except to mate and spawn , though some build foam nests on leaves and rarely leave the trees at all as adults, and Eleutherodactylus has evolved direct development and therefore does not need water for a tadpole stage. Tree frogs are usually tiny as their weight has to be carried by
42-591: The slopes of the Cordillera de Talamanca , the Cordillera de Tilarán and the Cordillera Central ranges, at altitudes between about 600 and 1,650 m (2,000 and 5,400 ft). The total extent of its range is estimated to be around 16,000 km (6,178 sq mi). There may be a subpopulation in the Cerro Colorado range in western Panama, as suggested by a single female being found there (2012). Much of
49-437: The species persists in these localities. The IUCN has classified the frog as being a vulnerable species . Tree frog Millions of years of convergent evolution have resulted in very similar morphology even in species that are not very closely related. Furthermore, tree frogs in seasonally arid environments have adapted an extra-epidermal layer of lipid and mucus as an evolutionary convergent response to accommodate
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