Sepietta oweniana

Sepietta oweniana
A image of a wild, live common bobtail squid on the seafloor
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Sepiida
Family: Sepiolidae
Genus: Sepietta
Species:
S. oweniana
Binomial name
Sepietta oweniana
(d'Orbigny in Ferussac & d'Orbigny, 1839-1841)[2]
Synonyms

Sepietta oweniana (common bobtail squid or common bobtail) is a common marine mollusc from the order Sepiida, the cuttlefish.

Common bobtails possess large, rounded pupils, eight arms each having biserial suckers and two arms with 32 tiny uniform-sized suckers in transverse rows to be used for securing their prey.[3] The mantle lengths of the common bobtail differ depending on gender, as males range 15 to 29mm whereas females range 18 to 34mm.[4] The average length of a male common bobtail is 15 to 30mm, with females having an average of 18 to 36mm.[5] The weight of a male common bobtail, between 0.1g - 0.7g.on average is more than a male common bobtail average, 0.2g - 1.4g in mass.

Common bobtail squids eat small molluscs, crustaceans, shrimp and small fish.[6][7] They are predated on by dolphins, sharks, fish, seals and seabirds.[8] The average life expectancy of common bobtails are about 9 months. They are most known for their distribution and abundance in the Mediterranean Sea and the north-east Atlantic Ocean.[9]

  1. ^ Allcock, L.; Barratt, I. (2012). "Sepietta oweniana". The IUCN Red List of Threatened Species. 2012: e.T162557A915487. doi:10.2305/IUCN.UK.2012-1.RLTS.T162557A915487.en. Downloaded on 11 February 2018.
  2. ^ Julian Finn (2016). "Sepietta oweniana (d'Orbigny [in Ferussac & d'Orbigny], 1839-1841)". World Register of Marine Species. Flanders Marine Institute. Retrieved 11 February 2018.
  3. ^ Czudaj, S.; Pereira, J.; Moreno, A.; Costa, A. M.; Saint-Paul, U.; Rosa, R. (2012). "Distribution, abundance, reproduction and ageing of the common bobtail squid Sepietta oweniana (Sepiolidae, Cephalopoda) from the Portuguese Coast". Marine Biology Research. 8 (1): 74–86. doi:10.1080/17451000.2011.594892. S2CID 85384226.
  4. ^ Czudaj, S.; Pereira, J.; Moreno, A.; Costa, A. M.; Saint-Paul, U.; Rosa, R. (2012). "Distribution, abundance, reproduction and ageing of the common bobtail squid Sepietta oweniana (Sepiolidae, Cephalopoda) from the Portuguese Coast". Marine Biology Research. 8 (1): 74–86. doi:10.1080/17451000.2011.594892. S2CID 85384226.
  5. ^ Czudaj, S.; Pereira, J.; Moreno, A.; Costa, A. M.; Saint-Paul, U.; Rosa, R. (2012). "Distribution, abundance, reproduction and ageing of the common bobtail squid Sepietta oweniana (Sepiolidae, Cephalopoda) from the Portuguese Coast". Marine Biology Research. 8 (1): 74–86. doi:10.1080/17451000.2011.594892. S2CID 85384226.
  6. ^ Nixon, M.; Young, J. (2011). "The brains and lives of cephalopods". Oxford: Oxford University Press: 88–89.
  7. ^ Bergström, B. I. (1985). "Aspects of natural foraging by Sepietta oweniana (Mollusca, Cephalopoda)". Ophelia. 24 (1): 65–74. doi:10.1080/00785236.1985.10426620.
  8. ^ Czudaj, S.; Pereira, J.; Moreno, A.; Costa, A. M.; Saint-Paul, U.; Rosa, R. (2012). "Distribution, abundance, reproduction and ageing of the common bobtail squid Sepietta oweniana (Sepiolidae, Cephalopoda) from the Portuguese Coast". Marine Biology Research. 8 (1): 74–86. doi:10.1080/17451000.2011.594892. S2CID 85384226.
  9. ^ Czudaj, S.; Pereira, J.; Moreno, A.; Costa, A. M.; Saint-Paul, U.; Rosa, R. (2012). "Distribution, abundance, reproduction and ageing of the common bobtail squid Sepietta oweniana (Sepiolidae, Cephalopoda) from the Portuguese Coast". Marine Biology Research. 8 (1): 74–86. doi:10.1080/17451000.2011.594892. S2CID 85384226.