List of vulnerable molluscs facts for kids
In September 2016, the International Union for Conservation of Nature (IUCN) announced that 879 types of molluscs were considered vulnerable. This means they face a high risk of disappearing forever in the wild. About 12% of all mollusc species that have been checked are on this list. The IUCN also listed 18 mollusc subspecies as vulnerable.
For a species to be called vulnerable, scientists must have strong proof that it's at a high risk of extinction. Species that are even more at risk are called endangered or critically endangered. All these groups are known as threatened species.
Also, 1988 mollusc species (about 27% of those checked) are listed as data deficient. This means there isn't enough information to fully check their conservation status. The IUCN believes these species might also be in danger, especially if they live in small areas or have small populations.
This list shows some of the vulnerable mollusc species and subspecies that the IUCN has checked.
Contents
- Gastropods: Snails and Slugs
- Bivalvia: Clams and Mussels
- Cephalopods: Octopuses and Squids
- See also
Gastropods: Snails and Slugs
There are 828 species and 16 subspecies of gastropods (snails and slugs) that are considered vulnerable.
Stylommatophora: Land Snails and Slugs
This group includes most land snails and slugs. There are 339 species and six subspecies in this order that are vulnerable.
Charopids
Many species in the Charopidae family are vulnerable. Examples include Allocharopa erskinensis and Norfolcioconch norfolkensis.
Helicarionids
Vulnerable Helicarionids include the Burgundy snail (Helicarion rubicundus) and Harmogenanina argentea.
Orthalicids
This group has many vulnerable species, like Bothriembryon bradshaweri and the New Zealand flax snail (Placostylus bollonsi).
Euconulids
Some vulnerable Euconulids are Caldwellia imperfecta and Dupontia levis.
Streptaxids
Vulnerable Streptaxids include Acanthennea erinacea and Gulella amboniensis.
Ferussaciids
Examples of vulnerable Ferussaciids are Amphorella cimensis and Cecilioides connollyi.
Helminthoglyptids
This family includes vulnerable species like the White desert snail (Eremarionta immaculata) and the Trinity bristle snail (Monadenia setosa).
Oxychilids
One vulnerable Oxychilid is Oxychilus oglasicola.
Camaenids
Many Camaenids are vulnerable, such as Carinotrachia carsoniana and the Mount Dryander scaly snail (Offachloritis dryanderensis).
Lauriids
Vulnerable Lauriids include Leiostyla arborea and Leiostyla filicum.
Vertiginids
Species Some vulnerable species are the Desmoulin's whorl snail (Vertigo moulinsiana) and Gastrocopta boninensis.
Subspecies Anauchen informis informis and Anauchen informis parcedentata are vulnerable subspecies.
Trissexodontids
Vulnerable Trissexodontids include Hatumia cobosi and Oestophora granesae.
Helicids
Species Examples of vulnerable Helicids are Arianta xatartii and Iberus campesinus.
Subspecies Hemicycla glyceia silensis is a vulnerable subspecies.
Hygromiids
Species Many Hygromiids are vulnerable, such as Actinella actinophora and the Cima discula (Hystricella turricula).
Subspecies Leptaxis simia portosancti is a vulnerable subspecies.
Vitrinids
Vulnerable Vitrinids include Oligolimax musignani and Plutonia dianae.
Chondrinids
Examples of vulnerable Chondrinids are Abida ateni and Chondrina centralis.
Enids
Vulnerable Enids include Mastus amenazada and Napaeus elegans.
Other Stylommatophora
Species This group includes the Tight coin (Ammonitella yatesii) and the Tongaland cannibal snail (Natalina wesseliana).
Subspecies Chlorilis hungerfordiana rufopila and Spelaeodiscus triarius tatricus are vulnerable subspecies.
Littorinimorpha: Sea and Freshwater Snails
There are 324 species and seven subspecies in the order Littorinimorpha that are vulnerable.
Hydrobiids
Species This large group includes many vulnerable species like the Blue spring aphaostracon (Aphaostracon asthenes) and the Hungarian blind snail (Bythiospeum hungaricum).
Subspecies Several subspecies of Mexipyrgus churinceanus are vulnerable, such as the Mexipyrgus de carranza snail (Mexipyrgus churinceanus carranzae).
Cochliopids
Vulnerable Cochliopids include Heleobia andecola and Heleobia galilaea.
Bithyniids
Examples of vulnerable Bithyniids are Bithynia badiella and Congodoma zairensis.
Moitessieriids
Vulnerable Moitessieriids include Moitessieria calloti and Paladilhia jamblussensis.
Assimineids
This group includes the Badwater snail (Assiminea infirma) and Fijianella calciphila.
Pomatiopsids
Vulnerable Pomatiopsids include Hubendickia pellucida and Oncomelania nosophora.
Amnicolids
Examples of vulnerable Amnicolids are Amnicola cora and the Stygian amnicola (Amnicola stygius).
Other Littorinimorpha species
This group includes Cremnoconchus conicus and the Modoc pebblesnail (Fluminicola modoci).
Sorbeoconcha: Diverse Snails
There are 55 vulnerable species in the order Sorbeoconcha.
Pleurocerids
Many Pleurocerids are vulnerable, such as the Anthony's riversnail (Athearnia anthonyi) and the Acute elimia (Elimia acuta).
Melanopsids
Vulnerable Melanopsids include Esperiana sangarica and Melanopsis subgraellsiana.
Thiarids
Examples of vulnerable Thiarids are Melanoides depravata and Semisulcospira decipiens.
Pachychilids
Vulnerable Pachychilids include Brotia annamita and Potadoma alutacea.
Paludomids
Examples of vulnerable Paludomids are Cleopatra cridlandi and Reymondia tanganyicensis.
Architaenioglossa
Species This group includes vulnerable species like Acicula benoiti and the Slender campeloma (Campeloma decampi).
Subspecies Renea moutonii moutonii and Renea moutonii singularis are vulnerable subspecies.
Lower Heterobranchia species
Vulnerable species in this group include Glacidorbis occidentalis and the Utah roundmouth snail (Valvata utahensis).
Cycloneritimorpha
Examples of vulnerable Cycloneritimorpha are Georissa laseroni and Neritina granosa.
Hygrophila: Freshwater Snails
Species This group includes vulnerable species like the Rocky Mountain capshell (Acroloxus coloradensis) and the Newcomb's snail (Erinna newcombi).
Subspecies Gyraulus connollyi exilis is a vulnerable subspecies.
Neogastropoda
Conids
Many cone snails are vulnerable, such as Conus allaryi and the Florida cone (Conus anabathrum).
Eupulmonata
Vulnerable Eupulmonata include Zospeum biscaiense and Zospeum exiguum.
Bivalvia: Clams and Mussels
There are 49 species and two subspecies of bivalves (clams and mussels) that are considered vulnerable.
Unionida: Freshwater Mussels
There are 37 species and two subspecies in the order Unionoida that are vulnerable.
Margaritiferids
The Middendorff's freshwater pearl mussel (Margaritifera middendorffi) is vulnerable.
Unionids
Species Many Unionids are vulnerable, such as the Dwarf wedgemussel (Alasmidonta heterodon) and the Pink mucket (Lampsilis abrupta).
Subspecies Lampsilis reeviana reeviana is a vulnerable subspecies.
Hyriids
Vulnerable Hyriids include Castalia martensi and the Carter's freshwater mussel (Westralunio carteri).
Iridinids
Species Examples of vulnerable Iridinids are Aspatharia divaricata and Mutela alata.
Subspecies Chambardia wahlbergi guillaini is a vulnerable subspecies.
Mycetopodids
Diplodontites olssoni is a vulnerable Mycetopodid.
Cardiida: Cockles and Giant Clams
This group includes vulnerable species like the Southern giant clam (Tridacna derasa) and the Giant clam (Tridacna gigas).
Arcida
Scaphula nagarjunai is a vulnerable Arcida species.
Venerida: Clams and Mussels
Vulnerable Venerida include Congeria kusceri and the River orb mussel (Sphaerium rivicola).
Cephalopods: Octopuses and Squids
Two species of cephalopods are vulnerable: Opisthoteuthis calypso and Opisthoteuthis massyae.
See also
