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Belgrandiella pageti 

Scope: Europe
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Littorinimorpha Hydrobiidae

Scientific Name: Belgrandiella pageti Schütt, 1970

Assessment Information [top]

Red List Category & Criteria: Data Deficient (Regional assessment) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-24
Assessor(s): Slapnik, R.
Reviewer(s): Bilandzija, H., Jalzic, B., Seddon, M.B., Sket, B. & Cuttelod, A.
Justification:
This species was considered to be threatened in Croatia, and assigned a status of  Vulnerable B2ab(iii) for the Croatian Red List of Cave Fauna. It is assessed as Data Deficient for the IUCN Red List pending clarification of its distribution. It may be either Vulnerable or Endangered, if the sites in northwestern Croatia and Slovenia are found to be threatened. 

This species has also been assessed at the regional level:
EU27 regional assessment:  this species is assessed as Data Deficient at the level of the 27 member states of the European Union. However, when more data become available on the situation of this species in Slovenia, it might qualify for an Endangered B2ab(iii) category.
European regional assessment: Data Deficient (possibly Vulnerable B2ab(iii))
Mediterranean regional assessment: Data Deficient (possibly Vulnerable B2ab(iii))

Geographic Range [top]

Range Description:This species is endemic to Croatia and Slovenia. In Croatia it lives in the subterranean waters and springs at Tounjčica, Rudnica, Mrežnica with all three sites in the same catchment. There are also comments that it is found in the North-West of Croatia, however this is not a karst country (B. Jalzic pers. comm. 2009), so this requires confirmation.
Countries occurrence:
Native:
Croatia; Slovenia
Additional data:
Number of Locations:4
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no data on population trends for this species.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits subterranean waters and springs
Systems:Freshwater

Use and Trade [top]

Use and Trade: This species is not utilised.

Threats [top]

Major Threat(s): The threats to this species are unknown.

Conservation Actions [top]

Conservation Actions: All caves and cave fauna are strictly protected by law in Croatia. The status of the subpopulation in Croatia is unknown and requires monitoring.
The species is considered 'Rare'  in the Slovenian List of Threatened Species  (Slovenian official gazette (2002) no. 82, Tuesday 24 September 2002).
This region is under considerable pressure for managing water sources and thus a monitoring programme is needed. The population and distribution status requires new data and the taxonomy would benefit from molecular approaches to confirm the species status.



Citation: Slapnik, R. 2010. Belgrandiella pageti. The IUCN Red List of Threatened Species 2010: e.T155836A4852156. . Downloaded on 21 June 2018.
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