Английская Википедия:Biomineralising polychaete

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Шаблон:Short description

Файл:Serpula israelitica.jpg
Serpula israelitica, longitudinal section of the tube, calcitic lamello-fibrillar structure
Файл:Ditrupa arietina tube microstructure.jpg
Ditrupa arietina (Serpulidae), outer tube layer, calcitic regularly ridged prismatic structure, showing interlocked prisms
Файл:Glomerula piloseta tube microstructure.jpg
Glomerula piloseta (Sabellidae), longitudinal section of the tube, aragonitic spherulitic prismatic structure

Biomineralising polychaetes are polychaetes that produce minerals to harden or stiffen their own tissues (biomineralize).

The most important biomineralizing polychaetes are serpulids, sabellids and cirratulids. They secrete tubes of calcium carbonate. Serpulids have most advanced biomineralization system among the annelids. Serpulids possess very diverse tube ultrastructures. Serpulid tubes are composed of aragonite, calcite or mixture of both polymorphs. In addition to the tubes, some serpulid species secrete calcareous opercula. Some sabellids and cirratulids can secrete aragonitic tubes. Sabellid and cirratulid tubes have a spherulitic prismatic ultrastructure. There are thin organic sheets in serpulid tube mineral structures. These sheets have evolved as an adaptation to strengthen the mechanical properties of the tubes.[1][2][3][4][5]

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