Marginal snails

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Marginal snails
Marginella sp.

Marginella sp.

Systematics
Superordinate : Caenogastropoda
Order : Sorbeoconcha
Subordination : Hypsogastropoda
Partial order : Neogastropoda
Superfamily : Muricoidea
Family : Marginal snails
Scientific name
Marginellidae
Fleming , 1828

The marginal snails (Marginellidae) are a family of mostly small, exclusively marine snails that occur in tropical and temperate seas. The snails feed on animal food as predators or ectoparasites . Over 400 species are described.

features

The broadly egg-shaped to almost rounded shells of the peripheral snails have a short to flat thread, a large body circumference and a narrow to swollen shell mouth. The smooth surface is hardly or not at all sculpted, but the outer lip can have a thickened edge on the outside, which is where the name of the snail comes from, and the inside can have teeth. The columella is folded. An operculum is missing.

The mantle of the crawling snail envelops the edge of the housing.

The eggs of the separate-sex snails are deposited in egg capsules. In at least some of the species, the development of the Veliger larva takes place in the capsule, so that finished snails hatch, as is the case with the common West African species Marginella glabella , which has been introduced into the Mediterranean .

The snails are mostly small, but besides tiny shapes there are also some larger species.

Way of life, occurrence and distribution

The Marginellidae are widespread in tropical and temperate seas, with a focus on tropical waters of West Africa, the Western Pacific and the Caribbean. The snails live on sand, on algae or under stones from the lower tidal zone to depths of 1000 meters.

As far as is known, the snails live on various prey as predators . So snails of the genus feed Cystiscus of bryozoans against other edge worm of sea squirts , more like Margin Ella glabella of snails , while still others species, including Hydroginella caledonica and representatives of the genus Tateshia than ectoparasites on fish (Family Scaridae , Serranidae and Pomacentridae ) feed on blood .

Systematics

According to Bouchet and Rocroi (2005), the family Marginellidae is one of twelve recent families in the superfamily Muricoidea . They divide the Turbinellidae family into three subfamilies:

literature

  • Henrich Conrad Weinkauff: The genera Marginella and Erato . Systematic Conchylia Cabinet by Martini and Chemnitz. Bauer and Raspe, Nuremberg 1878-1879. Volume 5, pp. 1-166, panels 1-26.
  • John W. Tunnell, Jean Andrews, Noe C Barrera, Fabio Moretzsohn: Encyclopedia of Texas Seashells: Identification, Ecology, Distribution, and History . Texas A&M University Press, College Station (Texas) 2010. 512 pp. Marginellidae : p. 233.
  • Philippe Bouchet (1989): A marginellid gastropod parasitizes sleeping fishes (PDF file; 1.15 MB) . Bulletin of Marine Science 45, pp. 76-84.
  • Philippe Bouchet & Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda . Malacologia, 47: 239-283, Ann Arbor 2005 ISSN  0076-2997
  • Winston Ponder & David Lindberg, Towards a phylogeny of gastropod molluscs; an analysis using morphological characters . Zoological Journal of the Linnean Society, 119: 83-265, London 1997 ISSN  0024-4082
  • Frank Riedel: Origin and evolution of the "higher" Caenogastropoda . Berliner Geoscientific Abhandlungen, Series E, Volume 32, Berlin 2000, 240 pages, ISBN 3-89582-077-6 .

Web links

Commons : Marginellidae  - Collection of images, videos, and audio files

Individual evidence

  1. ↑ a b Ángel A. Luque, Agustín Barrajón, José M. Remón, Diego Moreno, Leopoldo Moro (2012): Marginella glabella (Mollusca: Gastropoda: Marginellidae): a new alien species from tropical West Africa established in southern Mediterranean Spain through a new introduction pathway . Marine Biodiversity Records 5, e17. doi : 10.1017 / S1755267212000012