Sepia hedleyi
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Sepiida
Family: Sepiidae
Genus: Sepia
Subgenus: Rhombosepion
Species:
S. hedleyi
Binomial name
Sepia hedleyi
Berry, 1918[2]
Synonyms[2]
  • Decorisepia rex Iredale, 1926
  • Sepia dannevigi Berry, 1918
  • Sepia rex (Iredale, 1926)

Sepia hedleyi, or Hedley's cuttlefish, is a species of cuttlefish in the family Sepiidae, endemic to subtropical and temperate waters off Australia.

Description

Sepia hedleyi is a relatively small species of cuttlefish with a mantle length of 83 mm in males and 102 mm in females. It is beige in colour lacking any markings on the arms. There are longitudinal rows of up to 6 ridge-like bumps forming ridges along each side, next to the base of each fin[3] which vary in colour from orange to pink. The tentacular club is crescent-shaped and has a flattened surface which bears 9 to 12 suckers in transverse rows.[4] The fins are widest in their posterior third, rounded at their posterior ends where there is a narrow separation between the fins. The cuttlebone is oblong.[3]

Distribution

Sepia hedleyi is endemic to the waters off Australia. Its range extends from the Great Barrier Reef off Queensland around the eastern, southern, and western coasts of Australia to just to the south west of Shark Bay in Western Australia,[3] including Tasmania.[4]

Habitat and ecology

Sepia hedleyi occurs from shallow water to the continental slope,[1] with the maximum depth recorded being 1092 m and the minimum 47 m.[3]

Fisheries

Sepia hedleyi is frequently caught as bycatch in trawl fisheries in which the quarry is prawn or mixed species.[4]

Naming

Hedley's cuttlefish was named by the American malacologist Samuel Stillman Berry in 1918. It honours the English born Australian conchologist Charles Hedley 1862-1926.[5] The type specimen was collected in the Investigator Strait and is held in the Australian Museum in Sydney.[6]

References

  1. 1 2 Barratt, I.; Allcock, L. (2012). "Sepia hedleyi". IUCN Red List of Threatened Species. 2012: e.T162634A933220. doi:10.2305/IUCN.UK.2012-1.RLTS.T162634A933220.en. Retrieved 20 November 2021.
  2. 1 2 Julian Finn (2016). "Sepia hedleyi Berry, 1918". World Register of Marine Species. Flanders Marine Institute. Retrieved 17 February 2018.
  3. 1 2 3 4 P. Jereb; C.F.E. Roper, eds. (2005). Cephalopods of the World an Annotated and Illustrated Catalogue of Cephalopod Species Known to Date Volume 1 Chambered Nautiluses and Sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). Food and Agriculture Organization Rome. p. 87. ISBN 92-5-105383-9.
  4. 1 2 3 "Hedley's cuttlefish – Sepia hedleyi Berry 1918". Australian Museum. Retrieved 17 February 2018.
  5. ↑ "Biographical Etymology of Marine Organism Names. H". Hans.G.Hansson. Retrieved 18 February 2018.
  6. ↑ Michael J. Sweeney. "Recent Cephalopod Primary Type Specimens: A Searchig Tool" (PDF). Wordpress. Retrieved 16 February 2018.
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