Colorful scallop

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Colorful scallop
Variegated scallop (Mimachlamys varia)

Variegated scallop ( Mimachlamys varia )

Systematics
Order : Pectinida
Superfamily : Pectinoidea
Family : Scallops (Pectinidae)
Subfamily : Pedinae
Genre : Mimachlamys
Type : Colorful scallop
Scientific name
Mimachlamys varia
( Linnaeus , 1758)

The multicolored scallop ( Mimachlamys varia ) is a type of clam from the scallop family (Pectinidae).

features

The shells are by and large ovate, taller than wide; they reach a height of about seven centimeters. The two flaps are roughly equally curved and thus have the same flaps. The vertebra is pointed and protrudes slightly over the dorsal margin. One ear is placed in front of and behind the vertebra . The front ear is about two to three times as long as the back ear. The anterior ear of the right valve has a deep, serrated incision for the byssus . The back ear is cut off at an angle, the edge slightly concave inwards. The ligament lies inside in a triangular pit below the vertebra. The lock is toothless. There is only one single, very large and almost central sphincter muscle.

The housing surface has 25 to 35 radial ribs. The ribs and also the ears are covered with small scales or thorns. The shell is comparatively thin, but still quite firm. It is gray, dark red-gray to red or brown, but also marbled and piebald.

Yellow variant left and right flap from the outside
Brown marbled speckled color variant

Geographical distribution and habitat

The distribution area of ​​the species extends in the eastern Atlantic from northern Norway to the Cape Verde Islands . It is also found in the North Sea and the Mediterranean .

It occurs from shallow water to a depth of around 1,350 meters. It is attached to the hard substrate with the byssus or lives freely on sand and shingle.

Taxonomy

The taxon was first scientifically described by Carl von Linné in 1758 as Ostrea varia . In the older literature, the species is usually placed in the genus Chlamys Röding, 1798. The World Register of Marine Species lists them under the genus Mimachlamys Iredale, 1929. This genus was established by Tom Iredale as a subgenus of Chlamys ; Type species is Pecten asperrimus Lamarck, 1819 determined by the author.

supporting documents

literature

  • S. Peter Dance, Rudo von Cosel (arrangement of the German edition): The great book of sea shells. 304 p., Verlag Eugen Ulmer, Stuttgart, 1977 ISBN 3-8001-7000-0 (p. 227 as Chlamys varia )
  • Fritz Nordsieck : The European sea shells (Bivalvia). From the Arctic Ocean to Cape Verde, the Mediterranean Sea and the Black Sea. 256 p., Gustav Fischer Verlag, Stuttgart 1969 (p. 50 as Chlamys varia )
  • Guido Poppe and Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 pp., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unv. Reprint), ISBN 3925919104 (p. 64 as Chlamys varia )
  • Rainer Willmann: Mussels and snails of the North and Baltic Seas. 310 p., Neumann-Neudamm, Melsungen 1989, ISBN 3-7888-0555-2 (p. 108/9 as Chlamys varia )

On-line

Individual evidence

  1. ^ Carl von Linné: Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata . Pp. 1–824, Holmiae / Stockholm, Salvius, 1758. Online at Göttingen Digitization Center (p. 698 as Ostrea varia ).
  2. ↑ World Register of Marine Species: Mimachlamys varia (Linnaeus, 1758)

Web links

Commons : Multicolored Scallop ( Mimachlamys varia )  - Collection of images, videos, and audio files