Riisgård H.U.1*, Larsen P.S.2 2025. Catching the particles: role of ciliary bands in filter-feeding marine invertebrates // Invert. Zool. Vol.22. No.1: 137–145 [in English].
1 Marine Biological Research Centre, Department of Biology, University of Southern Denmark, 5300 Kerteminde, Denmark.
2 DTU Construct, Technical University of Denmark, 2800 Kgs Lyngby, Denmark.
Hans Ulrik Riisgård: hur@biology.sdu.dk ORCID: https://orcid.org/0000-0002-8188-2951
Poul S. Larsen: psla@stu.dk ORCID: https://orcid.org/0000-0002-7155-5965
*Author for correspondence
doi: 10.15298/invertzool.22.1.09
ABSTRACT: Claus Nielsen (1938–2024) was an outstanding zoologist and world-wide recognised as an expert of especially ectoprocts (bryozoans) and entoprocts. Here, we describe the ciliary mechanisms of catching particles in these two groups based on our studies made together with Claus Nielsen. Our interdisciplinary collaboration was based on studies of anatomical structures, microscope-video observations and fluid-mechanical calculations. We first give an outline of downstream particle catch-up retention in entoprocts, and next, we describe particle upstream retention in bryozoans (ectoprocts).
KEY WORDS: particle catch-up, entoprocts, bryozoans, ectoprocts, upstream retention, Claus Nielsen.