![]() Ciliary mechanisms of lamellibranchs with descriptions of anatomy. ![]() Ciliary and mucus-net filter feeding, with special reference to fluid mechanical characteristics. ![]() B., Kiørboe, T., Møhlenberg, F., Riisgard, H. Olsen and Olsen Press, Fredensborg, Denmark Bivalve filter feeding: hydrodynamics, bioenergetics, physiology and ecology. Feeding and cleaning mechanisms in the suspension feeding bivalve Mytilus edulis. A hydromechanical principle for particle retention in Mytilus edulis and other ciliary suspension feeders. A colorimetric method for the determination of sugars and related substances. The habits, anatomy, and embryology of the giant scallop ( Pecten tenuicostatus, Mighels). Particle sorting and labial palp function in the Pacific oyster Crassostrea gigas (Thunberg, 1795). General anatomy and surface microanatomy. New observations of the gills of Placopecten magellanicus (Mollusca: Bivalvia), and implications for nutrition. Mode of particle ingestion in five species of suspension-feeding bivalve molluscs. Peribuccal organs of Placopecten magellanicus and Chlamys varia (Mollusca: Bivalvia): structure, ultrastructure, and implications for feeding. Wld Aquaculture Workshops 1: 331–340īeninger, P. (eds.) An international compendium of scallop biology and culture. Structures and mechanisms of feeding in scallops: paradigms and paradoxes. Mucus therefore participates both in normal feeding and in ingestion volume control on the bivalve gill, although different mechanisms, and types of mucus, effect transport of material in the dorsal (feeding) and ventral (cleaning) ciliated tracts.īeninger, P. Chemical and histochemical tests of purified fluid withdrawn from the dorsal ciliated tracts indicate that mucus is present at all particle concentrations. As particle concentration or exposure time to the lower particle concentrations increased, four endogenous mechanisms of ingestion volume control were increasingly observed: (1) rejection of dense mucus-particle masses from the principal filament troughs onto the ventrally beating cilia and associated currents of the ordinary filament plicae, counter to and below the incoming pallial current maintained by the principal filament cilia (2) intermittent stopping of the anteriorward flow in the dorsal ciliated tracts (3) reduction or cessation of input from the principal filaments to the dorsal ciliated tracts (4) detachment of the dorsal bends from the mantle to establish a shunt from the infrabranchial to the suprabranchial cavity. Under low (1 to 10 particles μl -1) to medium (10 to 20 particles μl -1) particle concentrations, most particles were incorporated in continuous anteriorly directed slurries in the dorsal ciliated tracts of the gill arch and dorsal bends. The fate of captured particles depended on the extent of ingestive or handling capacity saturation. The technique of endoscopic video observation was used to study feeding processes of Placopecten magellanicus (Gmelin), collected from Bull Arm, Newfoundland in August 19, under near-natural feeding conditions.
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