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Common cockle
The common cockle (Cerastoderma edule) is a species of edible saltwater clam, a marine bivalve mollusc in the family Cardiidae, the cockles. It is found in waters off Europe, from Iceland in the north, south into waters off western Africa as far south as Senegal. The ribbed oval shells can reach 6 centimetres (2.4 in) across and are white, yellowish or brown in colour. The common cockle is harvested commercially and eaten in much of its range.
The common cockle was one of the many invertebrate species originally described by Carl Linnaeus in the landmark 1758 10th edition of Systema Naturae, where it was given its old binomial name Cardium edule. The species name is derived from the Latin adjective ĕdūlis, 'edible'. Italian naturalist Giuseppe Saverio Poli erected the genus Cerastoderma in 1795, making the common cockle the type species as Cerastoderma edule. The genus name is derived from the Ancient Greek words κέρας (keras, 'horn') and δέρμα (derma, 'skin'). For many years it was referred to by both names.
Other common names in English are edible cockle and common edible cockle. On account of its heart-like shape, it is called the 'heart mussel' in German and Scandinavian languages (Hertzmuschel and hjertemusling, respectively).
It typically reaches from 3.5 centimetres (1.4 in) to 5 cm (2.0 in) in length, but sometimes it reaches 6 cm (2.4 in). The shells are pale or whitish yellow, grubby white, or brown. The shell is oval, and covered by ribs, which are flattened in the middle part of the shell. The digestive glands are light brown to dark green.
In contrast, the similar lagoon cockle has an elongated shell posteriorly, black digestive glands and is found in substrate of stagnant water.
This species is found in coastal areas of the northern and eastern Atlantic Ocean. It is widely distributed from Iceland and Norway in Europe, to Senegal along the coast of west Africa. The common cockle is one of the most abundant species of molluscs in tidal flats located in the bays and estuaries of Europe. It plays a major role as a source of food for crustaceans, fish, and wading birds.
Cerastoderma edule
Right and left valve of the same specimen:
Cerastoderma edule var. belgicum
Right and left valve of the same specimen:
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Common cockle
The common cockle (Cerastoderma edule) is a species of edible saltwater clam, a marine bivalve mollusc in the family Cardiidae, the cockles. It is found in waters off Europe, from Iceland in the north, south into waters off western Africa as far south as Senegal. The ribbed oval shells can reach 6 centimetres (2.4 in) across and are white, yellowish or brown in colour. The common cockle is harvested commercially and eaten in much of its range.
The common cockle was one of the many invertebrate species originally described by Carl Linnaeus in the landmark 1758 10th edition of Systema Naturae, where it was given its old binomial name Cardium edule. The species name is derived from the Latin adjective ĕdūlis, 'edible'. Italian naturalist Giuseppe Saverio Poli erected the genus Cerastoderma in 1795, making the common cockle the type species as Cerastoderma edule. The genus name is derived from the Ancient Greek words κέρας (keras, 'horn') and δέρμα (derma, 'skin'). For many years it was referred to by both names.
Other common names in English are edible cockle and common edible cockle. On account of its heart-like shape, it is called the 'heart mussel' in German and Scandinavian languages (Hertzmuschel and hjertemusling, respectively).
It typically reaches from 3.5 centimetres (1.4 in) to 5 cm (2.0 in) in length, but sometimes it reaches 6 cm (2.4 in). The shells are pale or whitish yellow, grubby white, or brown. The shell is oval, and covered by ribs, which are flattened in the middle part of the shell. The digestive glands are light brown to dark green.
In contrast, the similar lagoon cockle has an elongated shell posteriorly, black digestive glands and is found in substrate of stagnant water.
This species is found in coastal areas of the northern and eastern Atlantic Ocean. It is widely distributed from Iceland and Norway in Europe, to Senegal along the coast of west Africa. The common cockle is one of the most abundant species of molluscs in tidal flats located in the bays and estuaries of Europe. It plays a major role as a source of food for crustaceans, fish, and wading birds.
Cerastoderma edule
Right and left valve of the same specimen:
Cerastoderma edule var. belgicum
Right and left valve of the same specimen: