Kiwa puravida

Kiwa puravida is a species of deep-sea dwelling decapod, a member of the genus Kiwa, a genus of animals sometimes informally known as "yeti crabs".^[1]

Kiwa puravida
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Anomura
Family:	Kiwaidae
Genus:	Kiwa
Species:	K. puravida
Binomial name
Kiwa puravida Thurber, Jones & Schnabel, 2011

The crabs live at deep-sea cold seeps where they feed on symbiotic Pseudomonadota, which they cultivate on hair-like projections on their claws. The bacteria metabolise hydrogen sulfide and methane produced by the seeps, and are harvested by the animals' comb-like mouthparts.^[2] Among the other deep-sea animals that make use of such symbionts this species is unique in that it actively waves its appendages over the vents in order to provide the bacteria with more oxygen and nutrients.^[3]

Kiwa puravida was discovered living on the 1,000-metre (3,300 ft) deep sea bottom off the coast of Costa Rica in 2006 by Andrew Thurber, William J. Jones and Kareen Schnabel.^[4][2][5] The only other members of its family, Kiwa hirsuta, and the Hoff crab, or Kiwa tyleri, are crabs with similarly hairy claws. Kiwa hirsuta was discovered in 2005 near Easter Island, whereas Kiwa tyleri was discovered in 2015 near the hydrothermal vents of East Scotia Ridge.^[2][6] The specific epithet puravida (literally "pure life") comes from a Costa Rican Spanish saying (used to answer "How are you doing?" or to say "Thanks"), a homage to where it was discovered.^[2]

References

1. WoRMS (2011). "Kiwa puravida Thurber, Jones & Schnabel, 2011". WoRMS. World Register of Marine Species. Retrieved December 4, 2011.
2. Ed Yong (December 2, 2011). "Yeti crab grows its own food". Nature. Retrieved December 24, 2011.
3. Oregon State University (December 3, 2011). "Scientists describe new species of crab that "farms" methane vents". PhysOrg. Retrieved December 24, 2011.
4. Andrew R. Thurber, William J. Jones & Kareen Schnabel (2011). "Dancing for food in the deep sea: bacterial farming by a new species of yeti crab". PLoS ONE. 6 (11): e26243. Bibcode:2011PLoSO...626243T. doi:10.1371/journal.pone.0026243. PMC 3227565. PMID 22140426.
5. Charles Choi (December 2, 2011). ""Yeti" crabs farm food on own arms – a first". National Geographic News. Archived from the original on December 4, 2011. Retrieved December 24, 2011.
6. "New Species: Hairy-Chested Yeti Crab Found in Antarctica". Archived from the original on 2015-06-26. Retrieved 2015-06-26.

External links

• Video of Kiwa puravida waving its claws, Nature Newsteam YouTube Channel