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Distribution and morphological variation of colonies of the bryozoan Pentapora fascialis (Bryozoa: Cheilostomata) along the western coast of Italy

Published online by Cambridge University Press:  25 June 2008

C. Lombardi ,
S. Cocito ,
A. Occhipinti-Ambrogi  and
J.S. Porter
C. Lombardi
Affiliation:
Section of Ecology, Department of ‘Ecologia del Territorio’, University of Pavia, Via S. Epifanio 14, 27100 Pavia, Italy ENEA, Marine Environment Research Centre, PO Box 224, 19100 La Spezia, Italy
S. Cocito
Affiliation:
ENEA, Marine Environment Research Centre, PO Box 224, 19100 La Spezia, Italy
A. Occhipinti-Ambrogi
Affiliation:
Section of Ecology, Department of ‘Ecologia del Territorio’, University of Pavia, Via S. Epifanio 14, 27100 Pavia, Italy
J.S. Porter*
Affiliation:
Institute of Biological Sciences, Edward Llwyd Building, Penglais Campus, University of Wales Aberystwyth, Aberystwyth, SY23 3DA, Wales, UK
*
Correspondence should be addressed to: J.S. Porter Institute of Biological Sciences, Edward Llwyd Building Penglais Campus, University of Wales AberystwythAberystwyth, SY23 3DA, Wales, UK email: jop@aber.ac.uk
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Abstract

Bathymetric range, substrate, colony density, colony size, and some zoarial features (form of the colony and branches) of the carbonate reef building cheilostome bryozoan Pentapora fascialis (Pallas) were recorded from 15 localities along the western coast of Italy. A wide range in the depth distribution of colonies was observed (11 to 60 m). Colonies occurred on several different types of substrate including gorgonians, sponges, bedrock and rock boulders, in current swept areas. Density was approximately 1 colony/m2. The most frequent colony size-class was 10 to 20 cm in diameter and was typically found growing epizoically on gorgonians. Ellipsoidal colony forms with expanded, foliaceous laminae were characteristic of larger colonies; these frequently grew on rock substrates. Subspherical colonies with a diameter less than 20 cm grew as epizoans and had a narrow branches structure. This information will help to inform decisions on taxonomic discrepancies within the Pentaporidae. In addition the data provide a useful baseline for the future estimation of a carbonate budget in the region.

Keywords

distributionmorphological variationcoloniesPentapora fascialiswestern coast of Italy
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 4 , August 2008 , pp. 711 - 717
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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