Iberus guiraoanus 

Scope: Europe
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Helicidae

Scientific Name: Iberus guiraoanus (Rossmässler, 1854)
Taxonomic Notes: Iberus is an Iberian Peninsula endemic genus, that comprised 20 morphospecies of uncertain validity (traditional classifications conflicted with each other mostly in the number of species), some of them occupying a very restricted geographical area. They were characterized mostly on the basis of the shell morphology because the reproductive system shows no diagnostic features at the specific level (Puente 1994, Arrébola 1995). Recently, Elejalde, Madeira, Arrébola, Muñoz and Gomez-Moliner (2008) have studied partial DNA sequences of two mitochondrial genes (COI and 16S rRNA) from different specimens of Iberus, to test the validity of the described morphospecies of the genus. The analysis have revealed 11 main phylogroups, being genetically unique lineages that are allopatrically distributed and considered to have full species status. One of them is I. guiraoanus, mainly characterized by its medium-sized umbilicated shells although the mentioned authors do not reject the possibility two cryptic species could exist in the guiraoanus clade.

Assessment Information [top]

Red List Category & Criteria: Least Concern (Regional assessment) ver 3.1
Year Published: 2011
Date Assessed: 2010-08-28
Assessor(s): Arrébola, J.
Reviewer(s): Neubert, E. & Cuttelod, A.
Even though I. guiraoanus is endemic to Andalusia (Spain) and some (limited) harvest activity has been registered, it shows a comparatively extended range and is found in relatively high density. Moreover, it inhabits inaccessible or hardly accessible rocky areas, sometimes in high altitudes, limiting the access of the collectors and decreasing the importance of harvest, the most relevant threat for this species. An important part of its range is included in a natural protected site. In summery, it is a Least Concern (LC) species that should be managed and monitored like a natural and economic resources.

Geographic Range [top]

Range Description:The Iberian Peninsula endemic I. guiraoanus is known from eastern Jaén, north Granada and some localities in the south of the Albacete provinces (Elejalde et al. 2008; Bragado, Araujo and Aparicio 2009). It is very close to the allopatric (i.e. geographically separated) species I. angustatus.
Countries occurrence:
Spain (Spain (mainland))
Additional data:
Estimated area of occupancy (AOO) - km2:260
Upper elevation limit (metres):1400
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are no population data about this species. According to our observations in the nature, a high density of individuals can be inferred.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This species lives in limestone mountains,  mainly in crevices, but also under stones or at the base/inside of plants and shrubs. Hybridization with other geographically close Iberus is not excluded, especially with I. angustatus.

Use and Trade [top]

Use and Trade: Although this is a target species, it is harvested in small quantities and only punctually. At the moment, this threat is negligible.

Threats [top]

Major Threat(s): Harvest for food is the main specific threat for this species

Conservation Actions [top]

Conservation Actions: Research on the ecology of this species and monitoring of the harvest trends is required. It lives in the Natural Park Cazorla, Segura y Las Villa, one of the most important and well preserved parks in Andalusia (and Spain). It is included in the "Conservation and Sustainable Use of Andalusian Snails Program" promoted by the Andalusian Regional Ministry of Environment (Junta de Andalucía). Due to its recent recognition as a valid species, it has not been included in the Atlas of the Spainish Threatened Invertebrates (Verdú and Galante 2009) or in the Red book of Andalusian Invertebrates (Barea-Azcón, Ballesteros-Duperón and Moreno 2008).

Citation: Arrébola, J. 2011. Iberus guiraoanus. The IUCN Red List of Threatened Species 2011: e.T184952A8339290. . Downloaded on 18 November 2017.
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