Overview

Distribution

Range Description

This species is endemic to South Africa where it has been found along the western shores of False Bay to the south of Cape Town, Western Cape Province (Tenorio and Monteiro 2008).

The distribution is as follows:
C. a. algoensis: from Saldanan Bay to the False Bay area (Danger Point);
C. a. form agulhasi: Agulhas Bank;
C. a. form scitulus: Harmanus to Cape Agulhas;
C. a. simplex: False Bay area from Muizenberg to Cape Point (S. Veldsman pers. comm. October 2011, Liltved and Millard 1989).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
According to specimen shell trading websites, examples of this species have been found under rocks on reefs at shallow depths with others reported at 20 m in sand. The size of adult species is typically 35 mm but larger variations from Simonstown Harbour have been found at 70 mm (Tenorio and Monteiro 2008).

This species occurs from 0-50 m in some areas. Subspecies and forms are all found in similar types of habitat. The species also occurs intertidally, and can be found under small to large boulders, on sandy reefs (S. Veldsman pers. comm. October 2011).

Systems
  • Marine
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Depth range based on 1 specimen in 1 taxon.

Environmental ranges
  Depth range (m): 1.8288 - 1.8288
 
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Depth range based on 3 specimens in 4 taxa.

Environmental ranges
  Depth range (m): 1.8288 - 53

Graphical representation

Depth range (m): 1.8288 - 53
 
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Veldsman, S.G.

Reviewer/s
Peters, H. & Raybaudi-Massilia, G.

Contributor/s

Justification
The species occurs in a small range, but to relatively deep depths in cold water, making it difficult to collect. Pollution is an issue for intertidal populations, as is overcollecting, as these are easier to reach. These populations have been declining in the past, but with adequate protection are likely to bounce back. It occurs in a couple of protected areas, and in deeper waters, so is currently considered to be of Least Concern.
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Population

Population
There are no records of population levels for this species. Populations in intertidal zones are declining (S. Veldsman pers. comm. October 201). The others (from 5 m and deeper) appear to be stable at present.

Population Trend
Unknown
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Threats

Major Threats
This species is restricted to a single bay (False Bay area), but also occurs up the coast to Saldanha Bay. It lives in shallow to deeper waters so parts of the population may be easily collected. The shell is attractive to casual shell collectors, but is taken mainly by specialist divers at deeper depths.

This species could be vulnerable to a major pollution event. Individuals in the intertidal area could be affected by pollution, and the population in intertidal areas has already been declining. For populations at deeper depths, pollution is not considered a threat.
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Management

Conservation Actions

Conservation Actions
There are a couple of conservation areas within the range of this species, for example Danger Point where collection is prohibited. One small population of C. a. simplex, the one attaining the giant size, is protected by a navy base at Simonstown.
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Wikipedia

Conus algoensis

Conus algoensis, common name the algoa cone, 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.

There are two subspecies :

  • Conus algoensis algoensis Sowerby, G.B. I, 1834
  • Conus algoensis simplex Sowerby, G.B. II, 1857[2]

Description[edit]

Distribution[edit]

References[edit]

  1. ^ a b Conus algoensis G. B. Sowerby II, 1834.  Retrieved through: World Register of Marine Species on 20 March 2010.
  2. ^ Rosenberg, G.; Bouchet, P. (2013). Conus algoensis Sowerby I, 1834. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=225448 on 2013-11-01

Gallery[edit]

Conus algoensis simplex

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