. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 374 SILVERMAN ET AL E E Q. 73. • 1 1 10 20 30 time (min) Figure 8. Time-dependent removal of Escherichia coli from 5°C sea- water by Mytilin ctlnlis controls (open square) or treated with 10"' M serotonin (filled square). Each point represents the mean ± SEM for 3 animals (SEM smaller than the symbols are not visible). The regression equation for the control mussels was: Y = + r = and treated: Y = + r = The role of these ciliary organelles in pa
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 374 SILVERMAN ET AL E E Q. 73. • 1 1 10 20 30 time (min) Figure 8. Time-dependent removal of Escherichia coli from 5°C sea- water by Mytilin ctlnlis controls (open square) or treated with 10"' M serotonin (filled square). Each point represents the mean ± SEM for 3 animals (SEM smaller than the symbols are not visible). The regression equation for the control mussels was: Y = + r = and treated: Y = + r = The role of these ciliary organelles in particle capture associated with suspension feeding has been controversial. Early workers including Atkins (1937) and Oral (1967) suggested that cirri were important as "mechanical" filters or traps that moved particles onto the frontal surface of the gill filament for subsequent transport. Support for this view is gained from the differential particle capture in bivalve species with cirri of different sizes (Owen and McCrae, 1976; M0hlenberg and Riisgard, 1978; J0rgensen et ai, 1984). McHenery and Birkbeck (1985) suggested that Esch- erichia coli were captured more effectively by marine bi- valves with larger cirri than by those with small or no latero-frontal cirri. A similar relationship between cirral size and particle capture has been reported for several freshwater bivalves (Silverman ft 1995. 1997; Tankersley. 1996). The observations of particle/cirral interactions described here extend the observations of Riisgard et a/.. (1996). These earlier observations were based on traditional light microscopic lenses immersed in water (theoretical maxi- mum resolution approximately jam) to observe particle interaction with cirri in isolated M. cdulis gills. Their iso- lated gill preparation contained 10 7 M serotonin to stim- ulate ciliary activity and were positioned to maintain the normal interfilament gap (40 jiim) at the level of the lateral ciliated cell
Size: 1284px × 1946px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
