Wikipedia

List of least concern molluscs

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.

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

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

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

Stylommatophora

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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

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Streptaxids

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Lauriids

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Vertiginids

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Cochlicellids

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Trissexodontids

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Helicids

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Species

Subspecies

Hygromiids

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Vitrinids

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Chondrinids

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Enids

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Argnids

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Helicodontids

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Orculids

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Other Stylommatophora species

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Littorinimorpha

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

Hydrobiids

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Cochliopids

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Bithyniids

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Species

Subspecies

Moitessieriids

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Assimineids

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Pomatiopsids

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Amnicolids

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Stenothyrids

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Iravadiids

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Other Littorinimorpha species

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Sorbeoconcha

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

Pleurocerids

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Melanopsids

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Semisulcospirids

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Thiarids

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Pachychilids

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Paludomids

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Species

Subspecies

Potamidids

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Architaenioglossa

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

Cyclophorids

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Pupinids

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Diplommatinids

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Aciculids

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Viviparids

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Ampullariids

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Craspedopomatids

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Lower Heterobranchia species

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Cycloneritimorpha

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

Helicinids

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Neritids

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Neritiliids

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Hygrophila species

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There are 188 Hygrophila species assessed as least concern.

Physids

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Acroloxids

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Planorbids

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Lymnaeids

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Chilinids

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Latiids

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Neogastropoda

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Conids

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Eupulmonata

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Other gastropod species

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Bivalvia

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

Unionida

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

Etheriids

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Unionids

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Hyriids

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Iridinids

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Species

Subspecies

Mycetopodids

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Cardiida

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Arcida

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Venerida

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

Dreissenids

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Sphaeriids

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Cyrenids

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Species

Subspecies

Donacids

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Other Venerida species

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Mytilida

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Cephalopods

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There are 197 cephalopod species assessed as least concern.

Octopuses

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Sepioloida

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There are 45 species in Sepioloida assessed as least concern.

Sepiids

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Sepiolids

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Sepiadariids

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Oegopsina species

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There are 126 Oegopsina species assessed as least concern.

Enoploteuthids

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Hooked squids

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Chiroteuthids

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Cranchiids

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Gonatids

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Ommastrephids

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Histioteuthids

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Pyroteuthids

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Other Oegopsina species

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Bathyteuthida

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Spirulida

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See also

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References

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  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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