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List of near threatened molluscs

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This is an old revision of this page, as edited by Pengo (talk | contribs) at 06:19, 11 September 2016 (update to IUCN 2016-2 data + formatting changes (no substantial changes)). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

14 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[a]
  • 2972 are not threatened at present[b]
  • 1967 to 3955 are threatened[c]
  • 324 to 441 are extinct or extinct in the wild:
    • 311 extinct (EX) species[d]
    • 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
Near Threatened (NT) species do not currently qualify for Critically Endangered (CR), Endangered (EN) or Vulnerable (VU), but are likely to qualify for a threatened category in the near future, or are already close to qualifying.

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 535 near threatened mollusc species.[1] 7.4% of all evaluated mollusc species are listed as near threatened. The IUCN also lists nine mollusc subspecies as near threatened.

No subpopulations of molluscs have been evaluated by the IUCN.

This is a complete list of near threatened mollusc species and subspecies evaluated by the IUCN.

Gastropods

There are 477 species and four subspecies of gastropod assessed as near threatened.

Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 250 species and four subspecies in the order Stylommatophora assessed as near threatened.

Zonitids

Clausiliids

Species

Subspecies

Helminthoglyptids

Camaenids

Species

Subspecies

Vertiginids

Cochlicellids

Trissexodontids

Helicids

Hygromiids

Species

Subspecies

Vitrinids

Chondrinids

Enids

Argnids

Other Stylommatophora species

Littorinimorpha

There are 115 species in the order Littorinimorpha assessed as near threatened.

Hydrobiids

Bithyniids

Moitessieriids

Assimineids

Pomatiopsids

Stenothyrids

Sorbeoconcha

Architaenioglossa

There are 41 species in the order Architaenioglossa assessed as near threatened.

Pupinids

Diplommatinids

Aciculids

Viviparids

Ampullariids

Craspedopomatids

Lower Heterobranchia species

Cycloneritimorpha

Hygrophila species

Neogastropoda

There are 29 species in the order Neogastropoda assessed as near threatened.

Buccinids

Muricids

Conids

Bivalvia

There are 57 species and five subspecies in the class Bivalvia assessed as near threatened.

Unionoida

There are 49 species and five subspecies in the order Unionoida assessed as near threatened.

Unionids

Species

Subspecies

Hyriids

Cardiida

Veneroida

Cephalopods

See also

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.


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