List of near threatened molluscs

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.

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%)Circle frame.svg
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.

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.

GastropodsEdit

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

StylommatophoraEdit

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

ZonitidsEdit

ClausiliidsEdit

Species

Subspecies

HelminthoglyptidsEdit

CamaenidsEdit

Species

Subspecies

VertiginidsEdit

CochlicellidsEdit

TrissexodontidsEdit

HelicidsEdit

HygromiidsEdit

Species

Subspecies

VitrinidsEdit

ChondrinidsEdit

EnidsEdit

ArgnidsEdit

Other Stylommatophora speciesEdit

LittorinimorphaEdit

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

HydrobiidsEdit

BithyniidsEdit

MoitessieriidsEdit

AssimineidsEdit

PomatiopsidsEdit

StenothyridsEdit

SorbeoconchaEdit

ArchitaenioglossaEdit

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

PupinidsEdit

DiplommatinidsEdit

AciculidsEdit

ViviparidsEdit

AmpullariidsEdit

CraspedopomatidsEdit

Lower Heterobranchia speciesEdit

CycloneritimorphaEdit

Hygrophila speciesEdit

NeogastropodaEdit

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

BuccinidsEdit

MuricidsEdit

ConidsEdit

BivalviaEdit

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

UnionidaEdit

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

UnionidsEdit

Species

Subspecies

HyriidsEdit

CardiidaEdit

VeneridaEdit

CephalopodsEdit

See alsoEdit

ReferencesEdit

  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.