Biology:List of vulnerable molluscs
In September 2016, the International Union for Conservation of Nature (IUCN) listed 879 vulnerable mollusc species.[1] Of all evaluated mollusc species, 12% are listed as vulnerable. The IUCN also lists 18 mollusc subspecies as vulnerable.
No subpopulations of molluscs have been evaluated by the IUCN.
For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". Endangered and critically endangered species also meet the quantitative criteria of vulnerable species, and are listed separately. See: List of endangered molluscs, List of critically endangered molluscs. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species by the IUCN.
Additionally 1988 mollusc species (27% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN.[2] While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed".[3]
This is a complete list of vulnerable mollusc species and subspecies evaluated by the IUCN.
Gastropods
There are 828 species and 16 subspecies of gastropod assessed as vulnerable.
Stylommatophora
Stylommatophora includes the majority of land snails and slugs. There are 339 species and six subspecies in the order Stylommatophora assessed as vulnerable.
Charopids
Helicarionids
Orthalicids
Euconulids
Streptaxids
Ferussaciids
Helminthoglyptids
Oxychilids
Camaenids
Lauriids
Vertiginids
Species
Subspecies
- Anauchen informis informis
- Anauchen informis parcedentata
Trissexodontids
Helicids
Species
Subspecies
- Hemicycla glyceia silensis
Hygromiids
Species
Subspecies
- Leptaxis simia portosancti
Vitrinids
Chondrinids
Enids
Other Stylommatophora
Species
Subspecies
- Chlorilis hungerfordiana rufopila
- Spelaeodiscus triarius tatricus
Littorinimorpha
There are 324 species and seven subspecies in the order Littorinimorpha assessed as vulnerable.
Hydrobiids
Species
Subspecies
Cochliopids
Bithyniids
Moitessieriids
Assimineids
Pomatiopsids
Amnicolids
Other Littorinimorpha species
Sorbeoconcha
There are 55 species in the order Sorbeoconcha assessed as vulnerable.
Pleurocerids
Melanopsids
- Esperiana sangarica
- Melanopsis subgraellsiana
Thiarids
Pachychilids
Paludomids
Architaenioglossa
Species
Subspecies
- Renea moutonii moutonii
- Renea moutonii singularis
Lower Heterobranchia species
Cycloneritimorpha
Hygrophila
Species
Subspecies
- Gyraulus connollyi exilis
Neogastropoda
Conids
Eupulmonata
- Zospeum biscaiense
- Zospeum exiguum
Bivalvia
There are 49 species and two subspecies in the class Bivalvia assessed as vulnerable.
Unionida
There are 37 species and two subspecies in the order Unionoida assessed as vulnerable.
Margaritiferids
- Middendorff's freshwater pearl mussel (Margaritifera middendorffi)
Unionids
Species
Subspecies
- Lampsilis reeviana reeviana
Hyriids
Iridinids
Species
Subspecies
- Chambardia wahlbergi guillaini
Mycetopodids
- Diplodontites olssoni
Cardiida
Arcida
- Scaphula nagarjunai
Venerida
Cephalopods
See also
- Lists of IUCN Red List vulnerable species
- List of least concern molluscs
- List of near threatened molluscs
- List of endangered molluscs
- List of critically endangered molluscs
- List of recently extinct molluscs
- List of data deficient molluscs
References
- ↑ "IUCN Red List version 2016-2". International Union for Conservation of Nature and Natural Resources. http://www.iucnredlist.org/. Retrieved 8 September 2016.
- ↑ "Limitations of the Data". Union for Conservation of Nature and Natural Resources. http://www.iucnredlist.org/initiatives/mammals/description/limitations. Retrieved 11 January 2016.
- ↑ "2001 Categories & Criteria (version 3.1)". Union for Conservation of Nature and Natural Resources. http://www.iucnredlist.org/static/categories_criteria_3_1. Retrieved 11 January 2016.
Original source: https://en.wikipedia.org/wiki/List of vulnerable molluscs.
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