Conus isabelarum 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Neogastropoda Conidae

Scientific Name: Conus isabelarum Tenorio & Afonso, 2004

Assessment Information [top]

Red List Category & Criteria: Least Concern D2 ver 3.1
Year Published: 2012
Date Assessed: 2011-10-27
Assessor(s): Tenorio, M.J.
Reviewer(s): Monnier, E. & Seddon, M.
Facilitator/Compiler(s): Seddon, M. & Peters, H.
This species is highly restricted in its range being found only within 3 small headlands along a strip of 8 km coastline. There are no plans for tourist development and no harbours nor any roads to the region, so there are no current threats to this species. The off-take for the shell trade is limited and as such is not considered a threat. The species is currently considered Least Concern but should the area be developed, or there be a road constructed, then the conservation status should be re-evaluated.

Geographic Range [top]

Range Description:This species is endemic to the Cape Verde Islands where it is found on the island of Maio off the west coast at Baia de Pau Seco (Tenorio and Afonso 2004), and further populations have been found to the north of the type locality, giving 16 km of coast.
Countries occurrence:
Cape Verde
FAO Marine Fishing Areas:
Atlantic – eastern central
Additional data:
Estimated area of occupancy (AOO) - km2:32
Number of Locations:2-3
Lower depth limit (metres):4
Upper depth limit (metres):2
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The number of subpopulations known has increased with survey work over the last six years (M.J. Tenorio pers. comm. 2011). The populations are considered to have been stable over the last 10 years and the species is occasionally taken from suitable habitats in the breeding season in the region (M.J. Tenorio pers. comm. 2011).
Current Population Trend:Stable
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This species is found under rocks in sand at between 2 and 4 m depth (Tenorio and Afonso 2004).  Adults of the species typically grow to approx 30 mm in length.

Use and Trade [top]

Use and Trade: In common with all Cape Verde Conus spp., the shells of this species are only traded for the specialist collector.  Their small size (typically below 30 mm) and superficial damage makes them less appealing than larger shells.  The juveniles are morphologically different to the adults and as such they are also taken as specimens for sale (M.J. Tenorio pers. comm. 2011).

Threats [top]

Major Threat(s): This is a recently described species and further populations have been found to the north of the original discovery. There are no known threats as this area is quite remote, and with little tourist or fishing activity in the area the species is considered to be at low risk.

Conservation Actions [top]

Conservation Actions: This species is restricted in its range and there are no known conservation measures currently in place for this species.

Classifications [top]

9. Marine Neritic -> 9.4. Marine Neritic - Subtidal Sandy
suitability:Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.1. Intentional use: (subsistence/small scale) [harvest]
♦ timing:Ongoing ♦ scope:Whole (>90%) ♦ severity:Unknown ⇒ Impact score:Unknown 
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

♦  Sport hunting/specimen collecting

Bibliography [top]

IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: (Accessed: 19 June 2012).

Tenorio, M. J., and Afonso, C. M. L. 2004. Description of Four New Species of Conus from the Cape Verde Islands (Gastropoda, Conidae.). Visaya 2: 24-37.

Citation: Tenorio, M.J. 2012. Conus isabelarum. The IUCN Red List of Threatened Species 2012: e.T192288A2066174. . Downloaded on 22 September 2018.
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