Overview

Distribution

Range Description

This species has a geographic distribution that includes northwest to southwest Madagascar (Reid et al. 2005).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species has a fairly deep depth range from 300 to 500 m (Reid et al. 2005). It has a mantle length of up to 80 mm (Reid et al. 2005).

Systems
  • Marine
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Dispersal

Depth range

300 to 500 m.
  • Jereb, P.; Roper, C.F.E. (Eds)(2005). An annotated an illustrated catalogue of cephalopod species known to date. Volume 1: Chambered nautilusses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes 4(1). FAO, Rome. 262p., 9 colour plates.
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Barratt, I. & Allcock, L.

Reviewer/s
Reid, A., Rogers, Alex & Bohm, M.

Contributor/s
Herdson, R. & Duncan, C.

Justification
Sepia bathyalis has been assessed as Data Deficient because little is known about it. It is not known to be the target of fisheries, and lives in relatively deep water, but may be taken as bycatch in trawl fisheries in the area.
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Population

Population
The population size of this species is unknown.

Population Trend
Unknown
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Threats

Major Threats
Ocean acidification caused by increased levels of carbon dioxide in the atmosphere is potentially a threat to all cuttlefish. Studies have shown that under high pCO2 concentrations, cuttlefishes actually lay down a denser cuttlebone which is likely to negatively affect buoyancy regulation (Gutowska et al. 2010).
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Management

Conservation Actions

Conservation Actions
No conservation measures are currently needed for this species and none are in place. Further research is recommended to determine population trends, distribution, life history traits and threats impacting this species.
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Wikipedia

Sepia bathyalis

Sepia bathyalis is a species of cuttlefish native to the southwestern Indian Ocean, specifically northwestern and southwestern Madagascar. It lives at a depth of between 300 and 500 m.[1]

S. bathyalis grows to a mantle length of 80 mm.[1]

The type specimen was collected near Madagascar (22°19′S 43°06′E / 22.317°S 43.100°E / -22.317; 43.100 to 22°23′S 43°06′E / 22.383°S 43.100°E / -22.383; 43.100). It is deposited at the Zoological Museum in Moscow.[2]

References

  1. ^ a b Reid, A., P. Jereb, & C.F.E. Roper 2005. Family Sepiidae. In: P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 57–152.
  2. ^ Current Classification of Recent Cephalopoda
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