Overview

Distribution

Range Description

This species is only known to occur in Kenya, where its reproductive habits have been described (Muthiga 2006).
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Physical Description

Type Information

Paratype for Holothuria (Mertensiothuria) arenacava Samyn et al., 2001
Catalog Number: USNM E53097
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Collector(s): N. Muthiga
Year Collected: 2000
Locality: Mombasa Marine National Reserve, off the Reef Hotel, Kenya, Indian Ocean
Depth (m): 10 to 10
  • Paratype: Samyn, Y., et al. 2001. A new species of Holothuria (Aspidochirotida, Holothuriidae) from Kenya. Koninklijk Museum voor Midden Afrika Tervuren Belgie Annalen Zoologische Wetenschappen. 285: 101-110.
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Paratype for Holothuria (Mertensiothuria) arenacava Samyn et al., 2001
Catalog Number: USNM E53098
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Collector(s): Y. Samyn
Year Collected: 1998
Locality: Mombasa Marine National Reserve, off the Reef Hotel, Kenya, Indian Ocean
Depth (m): 11 to 11
  • Paratype: Samyn, Y., et al. 2001. A new species of Holothuria (Aspidochirotida, Holothuriidae) from Kenya. Koninklijk Museum voor Midden Afrika Tervuren Belgie Annalen Zoologische Wetenschappen. 285: 101-110.
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Source: National Museum of Natural History Collections

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found in fine sand. Generation length is largely unknown for these species. Body size is not a good indicator of age or longevity. There is some indication, however, that many echinoderms do not go through senescence, but simply regenerate. Therefore generation length cannot be estimated, but is assumed to be greater than several decades (20-40 years) in a natural, undisturbed environment.

Systems
  • Marine
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
D2

Version
3.1

Year Assessed
2013

Assessor/s
Purcell, S. & Conand, C.

Reviewer/s
Polidoro, B., Carpenter, K.E., Knapp, L. & Harwell, H.

Contributor/s

Justification
This species is endemic to Kenya and is very rare. Although it occurs in a marine protected area, it is not known whether this provides effective protection for this shallow water, restricted range species. Given that sea cucumbers are heavily collected within its small range, it is unlikely that this species is adequately protected within its only known location. It is listed as Vulnerable under D2.
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Population

Population
This species is rare, but can be present in high densities where it occurs. It has been found in relatively dense aggregations of 10 per 100 m2 (Conand and Muthiga 2007).

Population Trend
Unknown
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Threats

Major Threats
This species is probably harvested along with other sea cucumber species in its small range.
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Management

Conservation Actions

Conservation Actions
This species was found in Mombasa marine reserve.
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