Een verklaring voor de misvormde Mactra’s van het strand van Texel

Malformed shells of Mactra (Mactra) corallina cinerea Montagu 1803 as described and pictured in Cadée (1999) from the beach of Texel, appear not to be confined to that area. They are now known from different parts of the North Sea (some other Frisian Islands, Scheveningen, the Belgian coast and the Doggersbank) and also from Spain (Cadiz). They were first reported from the Doggersbank by Birkett & Wood (1959), and are most probably the result of shellregeneration after cropping of the siphons by plaice or dab, as suggested by these authors.