. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 0054 0,106 time (s) 1981). Other species use the same appendage and the same movements essentially as a filter. In spite of the stereotypic form and movement of the antennae of Anemia larvae, their movement relative to the surrounding fluid changes during development. This change in relative limb velocity agrees with a study by Barlow and Sleigh (1980). who postulate that early stages may be unable to capture food because of the relatively low fluid velocities at the distal end of their antennae
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 0054 0,106 time (s) 1981). Other species use the same appendage and the same movements essentially as a filter. In spite of the stereotypic form and movement of the antennae of Anemia larvae, their movement relative to the surrounding fluid changes during development. This change in relative limb velocity agrees with a study by Barlow and Sleigh (1980). who postulate that early stages may be unable to capture food because of the relatively low fluid velocities at the distal end of their antennae. A similar conclusion is reached by Fryer (1983) for another anostracan, Branchianectaferox. A B 0) o c I O time (s) 080 o L. O -1 .20 \ / 0021 0041 0 061 time (s) Figure 6. Balance of forces through one cycle of the antennal motion that gives rise to the body motions predicted in Figure 5A-C. By con- vention, positive thrust is in the direction opposite to forward body mo- tion. Solid line = body drag, dashed line = thrust of limb; dotted line = unsteady force on the body. In C, the unsteady force on the body propels the body beyond the onset of the recovery stroke. (The calculated unsteady force on the limb was always 2 orders of magnitude lower than any other force and is omitted from the graphs.) Arrows mark onset of recovery stroke. as setose limbs (, cylinders bearing other cylinders), will either allow fluid through the array or force it around, depending on the importance of viscous drag. Some co- pepods do not use a sweep net to feed, but individually handle fluid parcels surrounding a food item (Koehl, B c 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 30 20. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
