Arctica islandica (Linnaeus, 1767)
Arcticoidea : Arcticidae |
| Tebble name: | Arctica islandica (Linnaeus) |
| Smith & Heppell name: | Arctica islandica (L., 1767) |
To size: To 130mm. Shell Structure: Solid, heavy. Equivalve: Equivalve. Equilateral: Slightly inequilateral, beaks slightly infront of midline. Tumidity: Moderately inflated. Outline: Small and medium sized shells roundly oval, large shells expanded posteriorly and subcircular. Contour: Umbo prominent, beaks projecting forward but lunule not defined.
Sculpture: Numerous fine concentric threads and ridges in adults; juveniles with regularly spaced concentric threads. Margin: Inner margin smooth. Ligament: External, large as a dark brown arched band behind the beaks; set on a prominent nymph and extending along half the length of the posterior dorsal margin. Hinge: Heavy, RV with 3 strong cardinal teeth and one posterior lateral posterior of the ligament, in front of anterior cardinal is a pit bordered by irregular knobs and ridges; LV with 3 cardinal teeth, anterior as a small knob, posterior as narrow ridge, single posterior lateral and irregular crenulations in front of anterior cardinal. Pallial Musculature: Pallial line entire but slightly indented below the posterior adductor scar. Periostracum: Straw coloured in juveniles becoming darker with age and finally black. Colour: Shell white under periostracum.
Distribution & Ecology
Depth Range
Intertidal
Continental Shelf (to 200m)
Additional Information & Related Species
Related Species
Arcticoidea : Arcticidae
References
Listed are literature citing Arctica islandica (Linnaeus, 1767). Reference containing the species Type Description is highlighted.
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Linnaeus C 1767. Systema Naturae. Editio duodecima. 1. Regnum Animale. 1&2 Homliae, Laurentii Salvii. 1-532: 533-1327. |
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Thompson I, Jones D S & Dreibelbis D 1980. Annual internal growth banding and life history of the ocean quahog Arctica islandica (Mollusca: Bivalvia). Marine Biology. 57(1): 25-34. |
Resources
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs - CLEMAM
Check List of European Marine Mollusca - MarLIN
The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment. - NBN Gateway
National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers. - BivAToL
- MarBEF
- Malacological Society
- Unitas Malacologica
- Census of Marine Life
- MarBEF
MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.
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