List of near threatened molluscs

12 extinct in the wild mollusc species (0.13%)785 critically endangered mollusc species (8.3%)708 endangered mollusc species (7.5%)1123 vulnerable mollusc species (11.8%)823 near threatened mollusc species (8.7%)3526 least concern mollusc species (37.1%)2229 data deficient mollusc species (23.5%)
Mollusc species (IUCN, 2025.2)
  • 9,502 extant species have been evaluated
  • 7,273 of those are fully assessed[a]
  • 4,358 are not threatened at present[b]
  • 2,915 to 5,144 are threatened[c]
  • 308 to 476 are extinct or extinct in the wild:
    • 296 extinct (EX) species[d]
    • 12 extinct in the wild (EW)
    • 167 possibly extinct [CR(PE)]
    • 1 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) status, but are likely to qualify for a threatened category in the near future, or are already close to qualifying.

In September 2016, the International Union for Conservation of Nature (IUCN) listed 535 near threatened mollusc species.[1] Of all evaluated mollusc species, 7.4% 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 252 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.

Unionida

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

Unionids

Species

Subspecies

Hyriids

Cardiida

Venerida

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. Retrieved 8 September 2016.


allikas: https://en.wikipedia.org/wiki/List_of_near_threatened_molluscs