List of least concern molluscs

Last updated

Circle frame.svg14 extinct in the wild mollusc species (0.20%)581 critically endangered mollusc species (8.4%)507 endangered mollusc species (7.3%)879 vulnerable mollusc species (13%)535 near threatened mollusc species (7.7%)2437 least concern mollusc species (35%)1988 data deficient mollusc species (29%)
Mollusc species (IUCN, 2020.1)
  • 6941 extant species have been evaluated
  • 4953 of those are fully assessed [lower-alpha 1]
  • 2972 are not threatened at present [lower-alpha 2]
  • 1967 to 3955 are threatened [lower-alpha 3]
  • 324 to 441 are extinct or extinct in the wild:
    • 311 extinct (EX) species [lower-alpha 4]
    • 13 extinct in the wild (EW)
    • 117 possibly extinct [CR(PE)]
    • 0 possibly extinct in the wild [CR(PEW)]

  1. excludes data deficient evaluations.
  2. NT, LR/cd, LC.
  3. Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
  4. Chart omits extinct (EX) species

In September 2016, the International Union for Conservation of Nature (IUCN) listed 2437 least concern mollusc species. [1] Of all evaluated mollusc species, 34% are listed as least concern. The IUCN also lists five mollusc subspecies as least concern.

Contents

No subpopulations of molluscs have been evaluated by the IUCN.

This is a complete list of least concern mollusc species and subspecies evaluated by the IUCN.

Gastropods

There are 1944 species and three subspecies of gastropod assessed as least concern.

Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 599 species and one subspecies in the order Stylommatophora assessed as least concern.

Charopids

Streptaxids

Lauriids

Vertiginids

Cochlicellids

Trissexodontids

Helicids

Species

Subspecies

Hygromiids

Vitrinids

Chondrinids

Enids

Argnids

Helicodontids

Orculids

Other Stylommatophora species

Littorinimorpha

There are 311 species and one subspecies in the order Littorinimorpha assessed as least concern.

Hydrobiids

Cochliopids

Bithyniids

Species

Subspecies

Moitessieriids

Assimineids

Pomatiopsids

Amnicolids

Stenothyrids

Iravadiids

Other Littorinimorpha species

Sorbeoconcha

There are 132 species and one subspecies in the order Sorbeoconcha assessed as least concern.

Pleurocerids

Melanopsids

Semisulcospirids

Thiarids

Pachychilids

Paludomids

Species

Subspecies

Potamidids

Architaenioglossa

There are 158 species in the order Architaenioglossa assessed as least concern.

Cyclophorids

Pupinids

Diplommatinids

Aciculids

Viviparids

Ampullariids

Craspedopomatids

Lower Heterobranchia species

Cycloneritimorpha

There are 40 species in the order Cycloneritimorpha assessed as least concern.

Helicinids

Neritids

Neritiliids

Hygrophila species

There are 188 Hygrophila species assessed as least concern.

Physids

Acroloxids

Planorbids

Lymnaeids

Chilinids

Latiids

Neogastropoda

Conids

Eupulmonata

Other gastropod species

Bivalvia

There are 296 species and two subspecies in the class Bivalvia assessed as least concern.

Unionida

There are 193 species and one subspecies in the order Unionoida assessed as least concern.

Etheriids

Unionids

Hyriids

Iridinids

Species

Subspecies

Mycetopodids

Cardiida

Arcida

Venerida

There are 96 species and one subspecies in the order Veneroida assessed as least concern.

Dreissenids

Sphaeriids

Cyrenids

Species

Subspecies

Donacids

Other Venerida species

Mytilida

Cephalopods

There are 197 cephalopod species assessed as least concern.

Octopuses

Sepioloida

There are 45 species in Sepioloida assessed as least concern.

Sepiids

Sepiolids

Sepiadariids

Oegopsina species

There are 126 Oegopsina species assessed as least concern.

Enoploteuthids

Hooked squids

Chiroteuthids

Cranchiids

Gonatids

Ommastrephids

Histioteuthids

Pyroteuthids

Other Oegopsina species

Bathyteuthida

Spirulida

See also

Related Research Articles

In August 2018, the IUCN Red List of Threatened Species identified 6086 Vulnerable species, subspecies and varieties, stocks and sub-populations in the Animalia kingdom.

References

  1. "IUCN Red List version 2016-2". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 8 September 2016.