Overview

Distribution

Range Description

This species is endemic to the Cape Verde Islands. It is known from two adjacent islands 9 km apart, where it is found off the western coast of São Vicente Island in the region of Calhau for 3 km of coast, and off the southern coast of the neighbouring Santa Luzia Island at Praia Francisca for 2 km of coast (Monteiro et al. 2004).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found in shallow water typically no deeper than 1 m. Adults of the species typically grow to 20 mm in length. There is no evidence of habitat decline in Santa Luzia, however there is some small recreational disturbance on the São Vicente Island in the region of Calhau.

Systems
  • Marine
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
NT
Near Threatened

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Tenorio, M.J.

Reviewer/s
Monnier, E., Seddon, M.B. & Peters, H.

Contributor/s

Justification
This species is endemic to the Cape Verde Islands, where it is found off the coast of São Vicente Island for 3 km, and the neighbouring Santa Luzia Island for 2 km of coast. There are limited threats to the population on São Vicente from recreational activity whereas Santa Luzia populations have some protection as the island is not inhabited and it lies within a protected area. However, Cape Verde generally is undergoing an explosive growth in tourism and associated development (Instituto Nacional de Estatística Cabo Verde, http://www.ine.cv/) which may affect future populations of this species. Additionally, this species lives in very shallow waters where it can be easily gleaned and it is at greater risk from seaborne pollution. Although there are no current threats, if harvest levels were to increase in future this may cause the species to decline, but not quite to the extent that it would become Extinct or Critically Endangered within a short time frame. Therefore, this species is currently listed as Near Threatened.
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Population

Population
This species is usually scarce in the range during the breeding season (M. J. Tenorio pers. comm. 2011). It is not collected often, so it is difficult to establish changes in the populations, however it has been consistently recorded over the last 8 years, so is considered stable (M. J. Tenorio pers. comm. 2011).

Population Trend
Stable
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Threats

Major Threats
This species is highly restricted in two bays on two islands. There are limited threats to one population on São Vicente from recreational activity along a coastline of only 3 km but there are no known plans for large-scale tourist development, so there are limited risks to this species. However, Cape Verde generally is undergoing an explosive growth in tourism and associated development (Instituto Nacional de Estatística Cabo Verde, http://www.ine.cv/) which may affect future populations of this species. Additionally, this species lives in very shallow waters where it can be easily gleaned. Off Santa Luzia, an uninhabited island, the population has no immediate known threats, although tourists are known to visit the island and its shallow depth puts it at greater risk from seaborne pollution.
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Management

Conservation Actions

Conservation Actions
This species is highly restricted in 2 bays on two islands. The Santa Luzia populations has some protection as the island is not inhabitated and it lies within a protected area.
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Relevance to Humans and Ecosystems

Risks

Extinction

It is probably an insular endemic, and at high risk of extinction. From its morphology and radular characters, it seems an evolutionary line different from other Capeverdian Conus species.
  • Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda.
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Wikipedia

Conus navarroi

Conus navarroi is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.[1]

Like all species within the genus Conus, these snails are predatory and venomous. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.

Contents

Description

Distribution

References

  1. ^ Conus navarroi Rolán, 1986.  Retrieved through: World Register of Marine Species on 27 March 2010.
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