WebMucus 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. ... Ward, J.E., MacDonald, B.A. et al. Gill function and particle transport in Placopecten ... Webbivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is …
Functional Organization of Intrinsic Gill Muscles in Zebra
WebStudy of gill development in bivalve larvae and postlarvae provides information on the evolution of this organ and feeding mechanisms of early stages. Scanning electron microscopy was used to document the development of the filibranch homorhabdic gill in hatchery-reared larval, postlarval, and juven … WebAdditional key words: water flow, gill function, muscle fibers, connective tissue Lamellibranch gills are often the major site of gas exchange, ion transport, and nutrient capture depend-ing on the species of bivalve (Barrington 1979; Dietz 1985; Pearse et al. 1987; Kays et al. 1990; McMahon 1991). In some bivalves, the gill also serves as a re- list of white male actors
Morphological and Histochemical Characterization of Gill Filaments …
WebGill areas of Geukensia demissa were determined by placing specimens with one valve removed under a Particle diameter, urn ( Crassostrea vwglnlca (2) Fig. 1. Particle retention efficiency as a function of particle diameter in 6 species of bivalves. Each value is the mean and range of WebPrimitive bivalves have paired gills that are small; in most other bivalves the gills are greatly enlarged. The vascular system contains the heart comprising a medial ventricle with left and right auricles. The reproductive system is simple. The most significant adaptation … The bivalve shell is made of calcium carbonate embedded in an organic … Many burrowing bivalves have shells that are ornamented and colored, near … Further increases in surface area have been achieved by folding the platelike … Classification. No system of classification erected for the Bivalvia has been … The burrowing, filter-feeding mode of life restricts bivalves to aquatic … WebThe labial palps of scallops are similar to those of the majority of bivalves, consisting of a right and left pair of tissue flaps, into which the anterior ends of the gills are inserted (Figure 3.4).The detailed structure and ultrastructure of scallop labial palps has been reported for only two species, Placopecten magellanicus and Chlamys varia (Beninger et al., 1990a). immunotherapy open access