Biology:List of vulnerable molluscs

From HandWiki
Revision as of 17:17, 13 February 2024 by MainAI6 (talk | contribs) (change)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Short description: none
Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild.

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

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

References

  1. "IUCN Red List version 2016-2". International Union for Conservation of Nature and Natural Resources. http://www.iucnredlist.org/. Retrieved 8 September 2016. 
  2. "Limitations of the Data". Union for Conservation of Nature and Natural Resources. http://www.iucnredlist.org/initiatives/mammals/description/limitations. Retrieved 11 January 2016. 
  3. "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.