Achatinella concavospira

Achatinella concavospira
Critically Imperiled
Critically Imperiled (NatureServe)[2]
CITES Appendix I [3]
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Achatinellidae
Genus: Achatinella
Subgenus: Achatinella
Species:
A. concavospira
Binomial name
Achatinella concavospira
Pfeiffer, 1859

Achatinella concavospira is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinellidae. This species is endemic to Hawaii.

Description

Achatinella concavospira is a species of small tree snail, they have banded shells in a variety of different colors, sharing mostly with their cousin, Achatinella mustelina. [4] Achatinella concavospira feeds on fungus and plant matter, and are mostly nocturnal.[5]

Distribution and habitat

Achatinella concavospira is endemic to Oahu. It can be found on the West Side of Oahu,[6] in the Waianae Mountain Range.[4] Populations of Achatinella concavospira are typically found at higher elevations, from 400 to 1'500 meters.[7]

Human usage & significance

Due to the varieties of color in their shells, along with the other members of their genus, Achatinella concavospira were widely sought out for by collectors.[6]

Conservation

Achatinella concavospira is currently considered as critically endangered.[4] Multiple conservation attempts have been made to protect it from a variety of external factors with much success.[6] Due to being threatened by invasive predators like the Rosy wolf snail,[7] conservationists have resorted to captive breeding,[7] as well as the creation of enclosures with no predators.[7] These conservation efforts have resulted in a significant recovery of snail populations.[7] However, captive rearing may cause a number of complications, such as lack of genetic variety within the species.[7]

References

  1. ↑ Hadfield, M.; Hadway, L. (1996). "Achatinella concavospira". IUCN Red List of Threatened Species. 1996 e.T176A13043513. doi:10.2305/IUCN.UK.1996.RLTS.T176A13043513.en. Retrieved 15 November 2021.
  2. ↑ NatureServe. "Achatinella concavospira". NatureServe Explorer. Arlington, Virginia. Retrieved 23 April 2026.
  3. ↑ "Achatinella concavospira Pfeiffer, 1859". Species+. UN Environment Programme World Conservation Monitoring Centre. Retrieved 23 April 2026.
  4. 1 2 3 "Achatinella". dlnr.hawaii.gov. Retrieved 3 March 2025.
  5. ↑ "O'ahu Tree Snail Facts - Photos - Earth's Endangered Creatures". www.earthsendangered.com. Retrieved 20 April 2025.
  6. 1 2 3 Holland, Brenden S; Hadfield, Michael G (1 August 2004). "Origin and diversification of the endemic Hawaiian tree snails (Achatinellidae: Achatinellinae) based on molecular evidence". Molecular Phylogenetics and Evolution. 32 (2): 588–600. Bibcode:2004MolPE..32..588H. doi:10.1016/j.ympev.2004.01.003. ISSN 1055-7903. PMID 15223040.
  7. 1 2 3 4 5 6 Price, Melissa R.; Hadfield, Michael G.; Knapp, Ingrid S. S.; Toonen, Robert J.; Forsman, Zac H. (22 April 2021). "Evolutionary genomics of endangered Hawaiian tree snails (Achatinellidae: Achatinellinae) for conservation of adaptive capacity". PeerJ. 9 e10993. doi:10.7717/peerj.10993. ISSN 2167-8359. PMC 8071074. PMID 33981486.


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