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The energetics of tube production by Mercierella enigmatica (Polychaeta: Serpulidae)

Published online by Cambridge University Press:  11 May 2009

David R. Dixon
Affiliation:
Institute for Marine Environmental Research, Prospect Place, The Hoe, Plymouth

Extract

The production of tubes by the serpulid polychaete Mercierella enigmatica is compared with somatic growth and reproduction, and is shown to account for the greatest portion of production energy expenditure.

INTRODUCTION

The tube of a serpulid polychaete consists of two major fractions, a conspicuous calcareous component comprising small crystals of aragonite or calcite, and a more diffuse organic matrix (Hedley, 1956; Neff; 1971). The continuity of the organic matrix was demonstrated by Hedley (1956), who showed that careful decalcifkation failed to disturb the form of the tube of Pomatoceros triqueter (L.).

The serpulid Mercierella enigmatica Fauvel (Ficopomatus enigmaticus cf. ten Hove & Weerdenburg, 1978) secretes a hard, calcareous tube shortly after it settles from the plankton (Rullier, 1955; Vuillemin, 1965). Initially, tube growth is relatively fast, but as the tube increases in length so the rate of growth declines. However, the tube of the adult worm can be as much as 80 mm in length, or more than four times the length of its body.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1980

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