Sepiidae

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Sepiidae
Common squid (Sepia officinalis)

Common squid ( Sepia officinalis )

Systematics
Trunk : Molluscs (mollusca)
Class : Cephalopods (cephalopoda)
Subclass : Octopus (coleoidea)
Superordinate : Ten-armed squid (Decabrachia)
Order : Cuttlefish (Sepiida)
Family : Sepiidae
Scientific name
Sepiidae
Leach , 1817

Sepiidae are a family of ten-armed squids from the order of the Sepiida with about 100 species in three genera.

features

Sepiidae are small to medium-sized cephalopods with a weight of up to 12 kg, whose coat can reach a length of 50 cm. The oval, elongated or almost round coat is surrounded by a narrow fin edge, interrupted at the rear end. The dorsal in the coat, under the skin lying Schulp is usually the same length as the mantle (with the exception of the genus Metasepia ) and oval lanzett- or diamond-shaped . The massive head is somewhat narrower than the coat, the protruding eyes are covered by a transparent membrane. Around the mouth are the eight arms and the two extended tentacles. Two to four suction cups with chitin-reinforced rings sit in transverse rows on the arms and four or more suction cups with chitin-reinforced rings on the club-shaped thickened ends of the tentacles . The tentacles can be pulled into the side coat pockets. Sepiidae are equipped with two gills .

distribution

Sepiidae are found in tropical , subtropical, and temperate zones of the Old World , in the Mediterranean, around Australia, and around Tasmania. The northern limit of distribution is in the west near Norway, in the east at the level of Peter the Great Bay .

Habitat and way of life

Sepiidae inhabit the continental shelf and the upper continental slope to a depth of 1000 m. They are primarily bottom dwellers of rocky, sandy and muddy ground, of seagrass meadows , seaweed forests and coral reefs . Some species undertake temperature- related migrations and collect , mostly in shallow water, to reproduce. The medium-sized eggs are attached to a substrate , the development time depends on the temperature. The females often die after reproducing. Life expectancy is 18 to 24 months, males of some species can also get older. Their diet consists of invertebrates and bony fish .

Systematics

  • Family Sepiidae , genera, subgenera and selection of species:

Individual evidence

  1. ↑ a b c P. Jereb (editor), CFE Roper (editor): Cephalopods of the World. Food & Agriculture Organization of the United Nations (FAO), 2006, ISBN 978-9251053836 , pp. 56-60.
  2. ^ A b Pascal Neige: Spatial patterns of disparity and diversity of the Recent cuttlefishes (Cephalopoda) across the Old World. 2003. In: Journal of Biogeography, 30, 1125–1137 ( online )
  3. ↑ Global Biodiversity Information Facility Germany: Sepia Linnaeus, 1758 (Genus)

Web links

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