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Green Spiny Lizard |
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Green Spiny Lizard |
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Leopard Frog |
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Variegated Squirrel
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Golden eyed Tree Frog
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The Golden eyed or Blue-sided Tree Frog (Agalychnis annae)
is a very colourful amphibian with pink, lavender, orange and blue on its limbs
and sides, contrasting with its uniform green upper surface. The large eyes of
the blue-sided tree frog are yellow-orange, which gives the frog its other
common name, the golden-eyed leaf frog. As in other Agalychnis species, the
eyes of this frog have vertical pupils.
The most notable characteristic of the
blue-sided tree frog, and the feature for which it is named, is the striking,
purplish-blue colouring on its flanks and thighs. The
blue-sided tree frog is both nocturnal and arboreal, and like other Agalychnis
species it typically moves around by walking, although it will also leap
between branches. This species breeds during the wet season, between May
and November, with mating taking place three to ten metres above the ground. During
copulation, the female carries the male to a pond below only to return to the
trees to find a place to deposit her eggs. The eggs are usually
deposited on top of leaves up to three metres above still water. After
the eggs hatch in five to seven days, the larvae of the blue-sided tree frog
either intentionally fall into the pond below or are washed down during heavy
rainfall, and this is where they then mature and metamorphose into adult frogs.
In captivity, this has taken around 247 days. The larvae of the
blue-sided tree frog are frequently found in garden fountains and swimming
pools of Costa Rica’s upland cities, including San José and the surrounding
urban areas.
The frog is endemic to Costa Rica, and can be found at elevations
ranging from 780 to 1,650 metres on the slopes of the cordilleras of northern
and central Costa Rica. Today, the species remains almost exclusively
in disturbed and polluted habitat in areas around Costa Rica’s capital city of
San José.
The blue-sided tree frog has suffered a precipitous decline
in its population, with an estimated 50 percent or more loss in population
since the 1990s. Some factors believed to have contributed to this sharp
decline are the international pet trade, the fungal disease chytridiomycosis,
and larvae predation by an introduced fish species. The blue-sided tree frog is a popular species in
the international pet trade, along with other frogs in the genus Agalychnis. In
2007, the United States alone was reported to have imported 221,960 Agalychnis
frogs over the previous decade.
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