Platymantis biak

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Platymantis biak
Platymantis biak.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ceratobatrachidae
Genus: Platymantis
Species:
P. biak
Binomial name
Platymantis biak
Siler, Diesmos  [ fr ], Linkem, Diesmos, and Brown  [ fr ], 2010 [2]

Platymantis biak, [3] also known as the Luzon limestone forest frog, [4] is a species of frog in the family Ceratobatrachidae. [3] It is endemic to the island of Luzon, the Philippines, [3] where it is known from the Biak-na-Bato National Park, its type locality, and from the immediate vicinity of the park. [1] The specific name biak is Tagalog meaning "crevice" or "crack" and refers to the preferred limestone karst habitat at the type locality. [2]

Contents

Description

Adult males measure 32–40 mm (1.3–1.6 in) and adult females 37–42 mm (1.5–1.7 in) in snout–vent length. The overall appearance is robust. The head is broader than the body. The tympanum is distinct. The supratympanic fold is smooth. The finger and the toe discs are moderately expanded, larger in the former than in the latter. The dorsum and head are mottled light green, dark green, and black. There is a distinct, black interorbital bar that is anteriorly bordered by lighter, green-brown border. The lower surfaces of the supratympanic fold are black, and there are black canthal and labial blotches by the eye. The dorsum has several large, irregularly distributed black blotches. The dorsal surfaces of the limbs have alternating dark brown and green transverse bars. There is an area of black blotches and cream speckles on anterior portion of flanks. The pupil is bordered by copper ciliary ring of iris, sharply blending into predominant mottled gold and brown color pattern of the iris. [2]

Especially female Platymantis biak are well camouflaged in their limestone habitat. [2]

Habitat and conservation

These frogs have been found perched on top of limestone rocks within large rock formations in the forest and around the entrances to cave systems; males have also been observed up to 5 m inside caves, some perched above ground within depressions and holes in the karst rock walls. They occur at about 190 m (620 ft) above sea level. Development is probably direct [1] [2] (i.e., there is no free-living larval stage [5] ).

This species can be common to abundant in suitable habitat, but its known range is small. There is limestone quarrying and mining in the region in which the species occurs, although this activity is not threatening the known locations, most of which are within the Biak-na-Bato National Park. [1]

Related Research Articles

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The pygmy forest frog is a species of frog in the family Ceratobatrachidae. It is endemic to the Philippines. It occurs in the Central Cordilleras and Sierra Madres of northern Luzon, and possibly also on Sibuyan Island. Scientists have seen it between 400 and 1000 meters above sea level.

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References

  1. 1 2 3 4 IUCN SSC Amphibian Specialist Group (2018). "Platymantis biak". IUCN Red List of Threatened Species . 2018: e.T42862906A42862915. doi: 10.2305/IUCN.UK.2018-1.RLTS.T42862906A42862915.en . Retrieved 20 November 2021.
  2. 1 2 3 4 5 Siler, Cameron D.; Diesmos, Arvin C.; Linkem, Charles W.; Diesmos, Mae L. & Brown, Rafe M. (2010). "A new species of limestone-forest frog, genus Platymantis (Amphibia: Anura: Ceratobatrachidae) from central Luzon Island, Philippines" (PDF). Zootaxa. 2482: 49–63. doi:10.11646/zootaxa.2482.1.3.
  3. 1 2 3 Frost, Darrel R. (2020). "Platymantis biak Siler, Diesmos, Linkem, Diesmos, and Brown, 2010". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001 . Retrieved 18 October 2020.
  4. ↑ "Philippine Endemic Frogs". Republic of the Philippines - Stamps & Postal History. 15 December 2011. Retrieved 18 October 2020.
  5. ↑ Vitt, Laurie J. & Caldwell, Janalee P. (2014). Herpetology: An Introductory Biology of Amphibians and Reptiles (4th ed.). Academic Press. p. 166.
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