Crab-eating frog

Crab-eating frog
Fejervarya cancrivora from Bogor, West Java
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Dicroglossidae
Genus: Fejervarya
Species:
F. cancrivora
Binomial name
Fejervarya cancrivora
(Gravenhorst, 1829)
Synonyms

Rana cancrivora Gravenhorst, 1829
Rana cancrivora ssp. raja Smith, 1930
Fejervarya raja (Smith, 1930)

The crab-eating frog (Fejervarya cancrivora) is a frog native to south-eastern Asia including Taiwan,[2] China, Sumatra in Indonesia,[3] the Philippines and more rarely as far west as Orissa in India.[4] It has also been introduced to Guam, most likely from Taiwan.[5] It inhabits mangrove swamps and marshes and is one of 144 known modern amphibians which can tolerate brief excursions into seawater, and is possibly the only extant marine amphibian.[6]

This frog can tolerate marine environments (immersion in sea water for brief periods or brackish water for extended periods) by increasing urea production and retention, and by remaining slightly hyperosmotic within urea and sodium flux.[7][8][9] Adults can survive in salt water with salinity as high as 2.8%, and tadpoles can survive salinities as high as 3.9%.[10]

  1. ^ Yuan Zhigang, Zhao Ermi, Shi Haitao, Diesmos, A.; Alcala, A.; Brown, R.; Afuang, L.; Gee, G.; Sukumaran, J.; Yaakob, N.; Leong Tzi Ming, Yodchaiy Chuaynkern, Kumthorn Thirakhupt, Das, I.; Iskandar, D.; Mumpuni.; Robert Inger (2004). "Fejervarya cancrivora". IUCN Red List of Threatened Species. 2004: e.T58269A11759436. doi:10.2305/IUCN.UK.2004.RLTS.T58269A11759436.en. Retrieved 19 November 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ^ Lue, Kuang-Yang. "Fejervarya cancrivora". BiotaTaiwanica. Archived from the original on 16 December 2016. Retrieved 12 December 2012.
  3. ^ Tanjung RD, Kusrini MD, Mardiastuti A, Yustian I, Setiawan A, Iqbal M. 2023. Amphibian community structure in Isau-Isau Wildlife Reserve, South Sumatra, Indonesia. Biodiversitas 24: 6836-6843.
  4. ^ Rare species of frog, snake in Orissa
  5. ^ Wostl, Elijah, Eric N. Smith, and Robert N. Reed. 2016. Origin and Identity of Fejervarya (Anura: Dicroglossidae) on Guam. Pacific Science 70(2):233-241. https://doi.org/10.2984/70.2.9
  6. ^ Hopkins, Gareth R.; Brodie, Edmund D. (2015). "Occurrence of Amphibians in Saline Habitats: A Review and Evolutionary Perspective". Herpetological Monographs. 29: 1–27. doi:10.1655/HERPMONOGRAPHS-D-14-00006. S2CID 83659304.
  7. ^ Schmidt-Nielsen, Knut; Lee, Ping (1962). "Kidney function in the crab-eating frog (Rana cancrivora)" (PDF). Journal of Experimental Biology. 39 (1): 167–177. doi:10.1242/jeb.39.1.167. PMID 13908824.
  8. ^ Dicker, Sebastian Ernest; Elliott, Annie B. (March 1970). "Water uptake by the crab-eating frog Rana cancrivora, as affected by osmotic gradients and by neurohypophysial hormones". Journal of Physiology. 207 (1): 119–32. doi:10.1113/jphysiol.1970.sp009052. PMC 1348696. PMID 5503862.
  9. ^ Tatsunori, Seki; Sakae, Kikuyama; Noboru, Yanaihara (1995-10-15). "Morphology of the skin glands of the crab-eating frog: Rana cancrivora". Zoological Science. 12 (5): 623–6. doi:10.2108/zsj.12.623. S2CID 86285729.
  10. ^ Gordon, Malcolm S.; Schmidt-Nielsen, Knut; Kelly, Hamilton M. (1961), "Osmotic regulation in the crab-eating frog (Rana cancrivora)", Journal of Experimental Biology, 38 (3): 659–678, doi:10.1242/jeb.38.3.659