Particle capture in ciliary filter-feeding gymnolaemate and phylactolaemate bryozoans – a comparative study

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Abstract:

Abstract

Riisgård, H.U., Okamura, B. and Funch, P. 2009. Particle capture in ciliary filter-feeding gymnolaemate and phylactolaemate bryozoans – a comparative study. —Acta Zoologica (Stockholm) 91: 416–425.

We studied particle capture using video-microscopy in two gymnolaemates, the marine cheilostome Electra pilosa and the freshwater ctenostome Paludicella articulata, and three phylactolaemates, Fredericella sultana with a circular funnel-shaped lophophore, and Cristatella mucedo and Lophophus crystallinus, both with a horseshoe-shaped lophophore. The video-microscope observations along with studies of lophophore morphology and ultrastructure indicated that phylactolaemate and gymnolaemate bryozoans with a diversity of lophophore shapes rely on the same basic structures and mechanisms for particle capture. Our study also demonstrates that essential features of the particle capture process resemble one another in bryozoans, brachiopods and phoronids.

Keywords: SEM; ciliary sieving; feeding in bryozoans; lophophore currents; tentacle-flick; ultrastructure; video-microscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1463-6395.2009.00417.x

Affiliations: 1: Marine Biological Research Centre, University of Southern Denmark, Hindsholmvej 11, DK-5300 Kerteminde, Denmark 2: Department of Zoology, Natural History Museum, Cromwell Road, London SW7 5BD, UK 3: Ecology and Genetics, Department of Biological Sciences, Aarhus University, DK-8000 Aarhus C, Denmark

Publication date: October 1, 2010

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