Arcuatula perfragilis

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Arcuatula perfragilis
Arcuatula perfragilis (from Reeve 1857: Modiola Plate 8, Fig. 42 [1])

Arcuatula perfragilis (from Reeve 1857: Modiola Plate 8, Fig. 42)

Systematics
Order : Mytiloida
Superfamily : Mytiloidea
Family : Blue mussels (Mytilidae)
Subfamily : Arcuatulinae
Genre : Arcuatula
Type : Arcuatula perfragilis
Scientific name
Arcuatula perfragilis
( Dunker , 1857)

Arcuatula perfragilis is a shell - type from the family of mussels (Mytilidae). The species is a Lesseps migrant in the Mediterranean .

features

The flared, inflated housing is up to 20 mm long. It is oblong-wedge-shaped (mytiliform) with the vertebra at the front end. The ventral margin is straight, the dorsal margin slightly arched. The longitude / latitude index is about 2.3. The ligament is on the outside and is very long. The lock has one to five very poorly developed dysodontic teeth at the front end and up to 15 teeth at the rear end behind the ligament.

The skin is thin and very fragile. The surface has more or less clear growth stripes that are crossed by radial lines in the middle of the housing. The periostracum is shiny. The skin is very light green or yellowish.

Geographical distribution. Habitat and way of life

The distribution area extends from the western Pacific (Honshu to Kyushu, Japan, China Sea, Taiwan, Indonesia) to the Indian Ocean including the Red Sea. Dunker's holotype (Cuming collection) comes from the Moluccas (Indonesia).

The species was first detected in the Mediterranean in 1960 . In 1971 it was found in the Suez Canal itself. Arcuatula perfragilis is firmly established on the coast of Israel , at Port Said and in the Bardawil Lagoon (Nile Delta, Egypt ). It is not common there, however. By 2016 it had expanded the distribution area to southern Turkey.

The species lives with byssus attached to mud and sandy soils, often in entire colonies. It occurs from the coast to the inner shelf (9 to 60 m).

Taxonomy

The taxon was first described in 1857 by Wilhelm Dunker as Volsella perfragilis . The MolluscaBase places them in the genus Arcuatula Jousseaume in Lamy, 1919. In this respect, it follows the ideas of Markus Huber, who wrote the very similar genres Lamya Soot-Ryen, 1958 and Musculista Yamato & Habe, 1958 with Arcuatula Jousseaume in Lamy, 1919 united.

literature

  • Peter Graham Oliver, Kevin Thomas (pictures): Bivalved seashells of the Red Sea. 330 pp., Wiesbaden, Hemmen et al. a., 1992 ISBN 3-925919-08-2 (p. 51, as Musculista perfragilis )
  • Argyro Zenetos, Serge Gofas, Giovanni Russo, José Templado: CIESM Atlas of Exotic Species in the Mediterranean. Vol.3 Mollusca. CIESM (Frédéric Briand, ed.), Monaco, 2003 ISBN 92-990003-3-6 (p. 222/223, text online , as Musculista perfragilis )

Individual evidence

  1. ^ Lovell Augustus Reeve: Conchologia iconica, or, Illustrations of the shells of molluscous animals. Vol. 10, London, Reeve Brothers, 1857-58 online at www.biodiversitylibrary.org (Plate 8, Fig. 42).
  2. ^ Tadashige Habe (1981). "A Catalog of Molluscs of Wakayama Prefecture, The Province of Kil" (PDF). Publications of the Seto Marine Biological Laboratory. Special Publication Series. University of Kyoto. I. Bivalvia, Scaphopoda and Cephalopoda: xii-264. PDF (p. 50)
  3. ^ FR Bernard, Ying Ya Cai, Brian Morton: Catalog of the living marine Bivalve molluscs of China. 146 pp., Hong Kong, Hong Kong University Press, 1993 ISBN 962-209-324-8 [preview on Google Books] (p. 35 as Musculista perfragilis )
  4. ^ Cem Çevik, Sedat Gündoğdu: Marine Mollusca of Mediterranean Coast of Turkey. In: Cemal Turan; Bariş Salihoğlu; Elif Özgür Özbek; Bayram Öztürk (Ed.): The Turkish Part of the Mediterranean Sea; Marine Biodiversity, Fisheries, Conservation and Governance. Pp. 189–197, Turkish Marine Research Foundation (TUDAV) Istanbul, 2016. ISBN 978-975-8825-35-6 .
  5. ↑ William Dunker: Mytilacea nova collectionis Cumingianae. Proceedings of the Zoological Society of London, 1856: 358–366, London 1857 Online at www.biodiversitylibrary.org (p. 362)
  6. ↑ MolluscaBase: Arcuatula perfragilis (Dunker, 1857)
  7. ^ Markus Huber: Compendium of Bivalves. 901 S., Hackenheim, ConchBooks, 2010 ISBN 978-3-939767-28-2 (p. 546)