In September 2016, the International Union for Conservation of Nature (IUCN) listed 2437 least concern mollusc species. Of all evaluated mollusc species, 34% are listed as least concern. The IUCN also lists five mollusc subspecies as least concern.
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 There are 1944 species and three subspecies of gastropod assessed as least concern.
Stylommatophora 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
Streptaxids
Lauriids
Vertiginids
Cochlicellids
Trissexodontids
Helicids Species
Subspecies Hemicycla glyceia glyceia
Hygromiids
Vitrinids
Chondrinids
Enids
Argnids
Helicodontids
Orculids
Other Stylommatophora species
Littorinimorpha There are 311 species and one subspecies in the order Littorinimorpha assessed as least concern.
Hydrobiids
Cochliopids
Bithyniids Species
Subspecies Gabbiella humerosa humerosa
Moitessieriids
Assimineids
Pomatiopsids
Amnicolids
Stenothyrids
Iravadiids
Other Littorinimorpha species
Sorbeoconcha There are 132 species and one subspecies in the order Sorbeoconcha assessed as least concern.
Pleurocerids
Melanopsids
Semisulcospirids Black juga (Juga nigrina)
Thiarids
Pachychilids
Paludomids Species
Subspecies Cleopatra bulimoides bulimoides
Potamidids
Architaenioglossa There are 158 species in the order Architaenioglossa assessed as least concern.
Cyclophorids Cyathopoma blandfordi
Pupinids Pupina difficilis
Diplommatinids
Aciculids
Viviparids
Ampullariids
Craspedopomatids
Lower Heterobranchia species
Cycloneritimorpha There are 40 species in the order Cycloneritimorpha assessed as least concern. Helicinids
Neritids
Neritiliids Platynerita rufa
Hygrophila species There are 188 Hygrophila species assessed as least concern.
Physids
Acroloxids
Planorbids
Lymnaeids
Chilinids
Latiids Latia neritoides
Neogastropoda Conids
Eupulmonata
Other gastropod species
Bivalvia There are 296 species and two subspecies in the class Bivalvia assessed as least concern.
Unionida There are 193 species and one subspecies in the order Unionoida assessed as least concern.
Etheriids Bartlettia stefanensis Etheria elliptica
Unionids
Hyriids
Iridinids Species
Subspecies Chambardia wahlbergi hartmanni
Mycetopodids
Cardiida Boring clam (Tridacna crocea)
Arcida
Venerida There are 96 species and one subspecies in the order Veneroida assessed as least concern.
Dreissenids
Sphaeriids
Cyrenids Species
Subspecies Corbicula fluminalis natalensis
Donacids
Other Venerida species
Mytilida
Cephalopods There are 197 cephalopod species assessed as least concern.
Octopuses
Sepioloida There are 45 species in Sepioloida assessed as least concern.
Sepiids
Sepiolids
Sepiadariids Koch's bottletail squid (Sepiadarium kochi) Sepioloidea magna
Oegopsina species There are 126 Oegopsina species assessed as least concern.
Enoploteuthids
Hooked squids
Chiroteuthids
Cranchiids
Gonatids
Ommastrephids
Histioteuthids
Pyroteuthids
Other Oegopsina species
Bathyteuthida Deepsea squid (Bathyteuthis abyssicola)
Spirulida Ram's horn squid (Spirula spirula)
See also Lists of IUCN Red List least concern species List of near threatened molluscs List of vulnerable molluscs List of endangered molluscs List of critically endangered molluscs List of recently extinct molluscs List of data deficient molluscs
References