Articles on this page are available in 1 other language: Dutch (1) (learn more)

Overview

Brief Summary

The alder's necklace shell is a predator snail, which digs itself into the sea floor. Once washed ashore, it looks a lot like the common necklace shell, only much smaller. Live specimen hardly ever wash ashore. Sometimes, the empty shells wash ashore by the thousands, often between Den Helder and the Hook of Holland. Alder's necklace shells used to be a very rare find. Thanks to sand nourishments nowadays, you seem them much more often on the beach.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Copyright Ecomare

Source: Ecomare

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Comprehensive Description

Description

 The shell of Polinices pulchellus is smooth, glossy and entirely lacking in ornament. The shell is up to 15 mm high and 12 mm wide, the last whorl making up most of the shell height. An umbilicus is present, the opening of which is narrow and pointed. The aperture is very large and occupies about three quarters of the shell height. There are five rows of brown markings on the shell. The large foot is cream or yellow in colour and bears two long, flattened tentacles. Lobes of flesh of the foot covers most of the shell when the snail is active.May be mistaken for the necklace shell Euspira catena but Polinices pulchellus is much larger and the shell bears distinct sutures and the outer lip of the aperture joins with the last whorl at right angles. Euspira catena also lacks the spiral markings of Polinices pulchella.

 Egg capsules are laid in a characteristic collar-shaped mass of jelly and sand grains. The collar is 2.5 - 3 cm in diameter with a central hole 1 cm wide and is unbroken. Eggs capsules are arranged irregularly in a single plane. Breeding occurs in spring and early summer (Graham, 1988).

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Depth range based on 1525 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1033 samples.

Environmental ranges
  Depth range (m): 0 - 219.5
  Temperature range (°C): 6.506 - 15.419
  Nitrate (umol/L): 0.267 - 12.040
  Salinity (PPS): 32.851 - 38.605
  Oxygen (ml/l): 5.576 - 6.605
  Phosphate (umol/l): 0.088 - 0.825
  Silicate (umol/l): 1.583 - 7.673

Graphical representation

Depth range (m): 0 - 219.5

Temperature range (°C): 6.506 - 15.419

Nitrate (umol/L): 0.267 - 12.040

Salinity (PPS): 32.851 - 38.605

Oxygen (ml/l): 5.576 - 6.605

Phosphate (umol/l): 0.088 - 0.825

Silicate (umol/l): 1.583 - 7.673
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

 On sandy bottoms between 10 and 50 m depth, usually buried because it feeds on bivalve molluscs.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Barcode data: Lunatia alderi

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There is 1 barcode sequence available from BOLD and GenBank.   Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen.  Other sequences that do not yet meet barcode criteria may also be available.

CATAAAGATAATGGTACTCTATACATCTTATTTGGTATGTGATCTGGGTTAGTCGGGACTGCCCTT---AGATTACTTATTCGAGCTGAATTAGGACAACCAGGAGCTCTTCTGGGAGAT---GATCAGCTTTATAACGTAATTGTTACGGCTCATGCTTTTGTAATAATTTTTTTTCTTGTTATACCAATAATGATTGGGGGTTTTGGAAATTGATTAGTTCCTCTAATA---CTAGGGGCTCCTGATATGGCTTTTCCTCGCCTAAATAATATAAGTTTCTGACTTTTACCTCCAGCCTTGTTATTGTTGCTGTCTTCAGCTGCGGTAGAAAGTGGTGTAGGTACAGGATGAACAGTTTATCCTCCCCTATYTGGAAATCTAGCTCATGCTGGTGGTTCAGTAGATTTA---GCAATTTTCTCGCTTCATCTAGCCGGGGTTTCTTCTATTTTAGGGGCTGTAAACTTTATTACTACTATTATTAATATACGATGACGAGGTATACAATTTGAACGCTTACCTCTTTTTGTTTGATCGGTTAAGATTACAGCTATTTTACTTCTTTTATCCTTACCTGTACTTGCTGGT---GCTATTACTATACTTTTAACTGATCGAAATTTTAATACAGCATTCTTTGATCCTGCTGGAGG
-- end --

Download FASTA File
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Statistics of barcoding coverage: Lunatia alderi

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Wikipedia

Euspira pulchella

Euspira pulchella (common name : Common necklace shell) is a species of sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.

Distribution[edit source | edit]

The Common necklace shell is a common sea snail occurring in the sublittoral zone and deeper waters (exceptionally up to 2,000 m) along sandy coasts of the North Sea, from France to Norway, and the North East Atlantic (Iceland). It is also common in the Mediterranean Sea. It can be frequently found in great numbers washed ashore on beaches. It has been present in the North Sea since the Pliocene.

Description of the shell[edit source | edit]

The globular shell is rather small with a low spire : max. 16 mm high and 14 mm wide. The shell has a rather pointed apex. There are 5 to 6 gently convex whorls with an undeep suture. The body whorl is strongly rounded and covers almost the whole shell. The aperture is rather ovate and has a smooth outer lip. A siphonal canal is lacking. The umbilicus is partly covered with a callus. The horny operculum is composed of corneous material. The surface of the shell is smooth and shiny and lacks sculpture. Its color is a pale brown-yellow stained with orange to red-brown spots, arranged in four to five spiral lines. The shell of washed up specimens shows often a blue-black discoloration.

Taxonomy[edit source | edit]

Euspira pulchella was originally described by Risso in 1826 as Natica pulchella. There are many synonyms for this species [1]

  • Euspira nitida (Donovan, 1804) (Treated as a synonym of Lunatia pulchella (Risso, 1826) in Poppe & Goto)
  • Lunatia alderi (Forbes, 1838)
  • Lunatia intermedia (Philippi, 1836)
  • Lunatia nitidia auct. non Donovan, 1800
  • Lunatia poliana (Della Chiaje, 1826) (Based on genus synonymy)
  • Natica alderi Forbes, 1838
  • Natica pulchella Risso, 1826 (Original combination for Euspira pulchella)
  • Polinices (Euspira) pulchellus (Risso, 1826) (currently placed in genus Euspira)
  • Polinices (Lunatia) alderi (Forbes, 1838)
  • Polinices (Lunatia) intermedia (Philippi, 1836)
  • Polinices (Lunatia) nitida auctt. (non Donovan, 1800) (In Backeljau treated as a synonym of Lunatia alderi (Forbes, 1838))
  • Polinices (Lunatia) poliana (Delle Chiaje, 1826)

References[edit source | edit]

Sources[edit source | edit]

Further reading[edit source | edit]

  • Fretter, V. & Graham, A., 1962. British Prosobranch Molluscs. Adlard & Son Ltd, for Ray Society, London, 755 pp.
  • Fretter, V. & Graham, A., 1981. The prosobranch molluscs of Britain and Denmark, 6. - Cerithiacea, Strombacea, Hipponicacea, Calyptraeacea, Lamellariacea, Cypraeacea, Naticacea, Tonnacea, Heteropoda. Journal of Molluscan Studies, Supplement 9, pp. 285-363.
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213
  • Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!