Seven-pointed scallop

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Seven-pointed scallop
Seven-pointed scallop (Pseudamussium peslutrae)

Seven-pointed scallop ( Pseudamussium peslutrae )

Systematics
Order : Pectinida
Superfamily : Pectinoidea
Family : Scallops (Pectinidae)
Subfamily : Palliolinae
Genre : Pseudamussium
Type : Seven-pointed scallop
Scientific name
Pseudamussium peslutrae
( Linnaeus , 1771)

The seven-ray scallop ( Pseudamussium peslutrae , syn .: Pseudamussium septemradiatum ) is a type of mussel from the family of scallops (Pectinidae).

features

The only moderately convex, unevenly hinged housings are oblique-rounded with a maximum diameter of up to five centimeters, in the Arctic also up to 6.2 cm. The right flap is slightly more convex than the left flap. The vortex sits near the top of the case. The umbonal angle is approximately 95 °. The comparatively small ears are almost the same size, the front ear is only slightly larger than the back ear. The anterior ear of the lower right flap is ribbed and has a very small byssus incision . The inner edge of the case is finely grooved.

The surface has three to ten (usually five to seven) wide and flat, radial folds and fine radial stripes on the folds and the spaces between the folds. They cross each other with fine concentric stripes, which z. T. are pulled out to fine thorns. The upper left flap is brick-red or purple-brown in color with white spots. The lower right flap is only z. Sometimes red (on the vertebra and / or on the edge) or even white. The thin shell is translucent and fragile.

Geographical distribution and habitat

The distribution area of ​​the seven-pointed scallop reaches from the Arctic , along the eastern Atlantic to Gibraltar and the Mediterranean . It lives there from about 10 meters down to a depth of 600 meters on muddy ground. In the North Sea it only occurs from a depth of 50 meters and deeper.

Taxonomy

The taxon was established in 1771 by Carl von Linné as Ostrea peslutrae . In 1776 Otto Friedrich Müller suggested the name Pecten septemradiatus for the species . This name prevailed predominantly in the literature, but is treated in the more recent literature as a younger synonym of Pseudamussium peslutrae . Pecten septemradiatus Müller, 1776 is the type species of the genus Pseudamussium Mörch, 1853.

supporting documents

literature

  • Rudolf Kilias: Lexicon marine mussels and snails. 2nd edition, 340 p., Verlag Eugen Ulmer, Stuttgart 1997 ISBN 3-8001-7332-8 (p. 260 as Pseudamussium septemradiatum )
  • 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. 48 as Pseudamussium septemradiatum )
  • Guido Poppe and Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 pp., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 70 as Pseudamussium septemradiatum )

On-line

Individual evidence

  1. ^ Theodor CH Cole: Dictionary of Invertebrates / Dictionary of Invertebrates: Latin-German-English. Springer Spektrum, Berlin 2017, ISBN 978-3-662-52869-3 , p. 64. Preview on Google Books
  2. ↑ Carl von Linné: Mantissa plantarum altera generum editionis VI. et specierum editionis II. pp. 144–588, Holmiae / Stockholm, Salvius, 1771. Online at www.biodiversitylibrary.org (p. 547)
  3. ↑ Otto Friedrich Müller: Zoologiae Danicae prodromus, seu animalium Daniae et Norvegiae indigenarum characteres, nomina, et synonyma imprimis popularium. S. I-XXXII, 1-274, Havniae / Copenhagen, Hallager, 1776 Online at www.biodiversitylibrary.org (p. 248)
  4. ↑ World Register of Marine Species: Pseudamussium peslutrae (Linnaeus, 1771)

Web links

Commons : Pseudamussium peslutrae  - collection of images, videos and audio files