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Information about Sepiolida

Bobtail squid
Enlarge picture
Sepiola atlantica

Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Cephalopoda
Order:Sepiolida
Fioroni, 1981
Families


Idiosepiidae
Sepiolidae


Bobtail squid (order Sepiolida) are a group of cephalopods closely related to cuttlefish. Bobtail squid tend to have a rounder mantle than cuttlefish and have no cuttlebone. They have eight suckered arms and two tentacles and are generally quite small. Sepiolids live in shallow coastal waters of the Pacific Ocean and some parts of the Indian Ocean. Like cuttlefish, they can swim by either using the fins on their mantle or by jet propulsion. They are also known as Dumpling squid (owing to their rounded mantle) or Stubby squid.

Light organ

Bobtail squid have a symbiotic relationship with bioluminescent bacteria (Vibrio fischeri), which inhabit a special light organ in the squid's mantle. The bacteria are fed a sugar and amino acid solution by the squid and in return hide the squid's silhouette when viewed from below by matching the amount of light hitting the top of the mantle.

Classification

External links

S. atlantica

Binomial name
Sepiola atlantica
Orbigny, 1839
(in Férussac & Orbigny, 1834–1848)

The Atlantic Bobtail (Sepiola atlantica
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Mollusca
Linnaeus, 1758

Classes

Caudofoveata
Aplacophora
Polyplacophora
Monoplacophora
Bivalvia
Scaphopoda
Gastropoda
Cephalopoda
† Rostroconchia
† Helcionelloida
† ?Bellerophontida
The molluscs
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Cephalopoda
Cuvier, 1797

Orders

Subclass Nautiloidea
  • †Plectronocerida
  • †Ellesmerocerida
  • †Actinocerida
  • †Pseudorthocerida
  • †Endocerida
  • †Tarphycerida
  • †Oncocerida

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19th century - 20th century - 21st century
1950s  1960s  1970s  - 1980s -  1990s  2000s  2010s
1978 1979 1980 - 1981 - 1982 1983 1984

Year 1981 (MCMLXXXI
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Idiosepiidae
Appellöf, 1898

Genus: Idiosepius
Steenstrup, 1881

Species

See text.

Idiosepius is a genus of bobtail squid encompassing around eight species.
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Sepiolidae
Leach, 1817

Subfamilies and Genera
  • Heteroteuthinae
  • Amphorateuthis
  • Heteroteuthis
  • Iridoteuthis

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Cephalopoda
Cuvier, 1797

Orders

Subclass Nautiloidea
  • †Plectronocerida
  • †Ellesmerocerida
  • †Actinocerida
  • †Pseudorthocerida
  • †Endocerida
  • †Tarphycerida
  • †Oncocerida

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Sepiida
Zittel, 1895

Suborders and Families
  • †Vasseuriina
  • †Vasseuriidae
  • †Belosepiellidae
  • Sepiina

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The mantle is an organ found in mollusks. It is the dorsal body wall covering the main body, or visceral mass. In many species, the epidermis of this organ secretes calcium carbonate to create a shell.
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Cuttlebone is a hard, brittle internal structure found in all members of the family Sepiidae, commonly known as cuttlefish. Cuttlebone is composed primarily of calcium carbonate. It is a chambered, gas-filled shell used for buoyancy control.
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Earth's oceans
(World Ocean)
  • Arctic Ocean
  • Atlantic Ocean
  • Indian Ocean
  • Pacific Ocean
  • Southern Ocean


The Pacific Ocean (from the Latin name Mare Pacificum
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Earth's oceans
(World Ocean)
  • Arctic Ocean
  • Atlantic Ocean
  • Indian Ocean
  • Pacific Ocean
  • Southern Ocean
This article is about the water body. For the Indian fusion music band, see Indian Ocean (band).

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symbiosis (from the Greek: συμ, sym, "with"; and βίοσίς, biosis, "living") can be used to describe various degrees of close relationship between organisms of different species.
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Bioluminescence is the production and emission of light by a living organism as the result of a chemical reaction during which chemical energy is converted to light energy.
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Bacteria

Phyla

Actinobacteria
Aquificae
Chlamydiae
Bacteroidetes/Chlorobi
Chloroflexi
Chrysiogenetes
Cyanobacteria
Deferribacteres
Deinococcus-Thermus
Dictyoglomi
Fibrobacteres/Acidobacteria
Firmicutes
Fusobacteria
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V. fischeri

Binomial name
Vibrio fischeri
(Beijerinck 1889)
Lehmann & Neumann 1896

Vibrio fischeri is a rod-shaped bacterium found globally in the marine environments.
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Cephalopoda
Cuvier, 1797

Orders

Subclass Nautiloidea
  • †Plectronocerida
  • †Ellesmerocerida
  • †Actinocerida
  • †Pseudorthocerida
  • †Endocerida
  • †Tarphycerida
  • †Oncocerida

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Nautiloidea
Agassiz, 1847

Orders

Palcephalopoda
  • †Plectronocerida
  • †Ellesmerocerida
  • †Actinocerida
  • †Pseudorthocerida
  • †Endocerida
  • †Tarphycerida
  • †Oncocerida

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Coleoidea
Bather, 1888

Orders
  • †Belemnoidea
  • †Aulacocerida
  • †Belemnitida

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For other uses, see Squid (disambiguation).


Superconducting Quantum Interference Devices (SQUID) are very sensitive magnetometers used to measure extremely small magnetic fields, based on superconducting loops
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Octopoda
Leach, 1818

Suborders

†Pohlsepia (incertae sedis)
†Proteroctopus (incertae sedis)
†Palaeoctopus (incertae sedis)
Cirrina
Incirrina
Synonyms

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Sepiida
Zittel, 1895

Suborders and Families
  • †Vasseuriina
  • †Vasseuriidae
  • †Belosepiellidae
  • Sepiina

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Decapodiformes
Young, et al., 1998

Orders

?†Boletzkyida
Sepiida
Sepiolida
Spirulida
Teuthida
Synonyms
  • Decembrachiata
    Winckworth, 1932
Decapodiformes
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Spirulida
Stolley, 1919

Suborders

†Groenlandibelida
†Belopterina
Spirulina

Spirulida is an order of cephalopods comprising one extant species and several extinct taxa.
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Sepiida
Zittel, 1895

Suborders and Families
  • †Vasseuriina
  • †Vasseuriidae
  • †Belosepiellidae
  • Sepiina

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Idiosepiidae
Appellöf, 1898

Genus: Idiosepius
Steenstrup, 1881

Species

See text.

Idiosepius is a genus of bobtail squid encompassing around eight species.
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Sepiolidae
Leach, 1817

Subfamilies and Genera
  • Heteroteuthinae
  • Amphorateuthis
  • Heteroteuthis
  • Iridoteuthis

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