Wikipedia

List of near threatened molluscs

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.

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) status, but are likely to qualify for a threatened category in the near future, or are already close to qualifying.

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 edit

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

Stylommatophora edit

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 edit

Clausiliids edit

Species

Subspecies

Helminthoglyptids edit

Camaenids edit

Species

Subspecies

Vertiginids edit

Cochlicellids edit

Trissexodontids edit

Helicids edit

Hygromiids edit

Species

Subspecies

Vitrinids edit

Chondrinids edit

Enids edit

Argnids edit

Other Stylommatophora species edit

Littorinimorpha edit

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

Hydrobiids edit

Bithyniids edit

Moitessieriids edit

Assimineids edit

Pomatiopsids edit

Stenothyrids edit

Sorbeoconcha edit

Architaenioglossa edit

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

Pupinids edit

Diplommatinids edit

Aciculids edit

Viviparids edit

Ampullariids edit

Craspedopomatids edit

Lower Heterobranchia species edit

Cycloneritimorpha edit

Hygrophila species edit

Neogastropoda edit

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

Buccinids edit

Muricids edit

Conids edit

Bivalvia edit

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

Unionida edit

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

Unionids edit

Species

Subspecies

Hyriids edit

Cardiida edit

Venerida edit

Cephalopods edit

See also edit

References edit

  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.


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