. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING BY LITTORINA 235. Figure 6. High-magnification view of velum of mature Littorina saxatilis larva viewed with epifiuorescence microscopy (FITC filter sell. Larva was exposed to fluorescently labeled albumen for 12 h. Fluorescence appears in the ciliated band of velar cells but not the pretrochal region. Fluorescence is concentrated in small (<2 fim) vacuoles within the prototrochal cells, pr. pretrochal region; v, velum (positioned on ciliated band). Scale bar = 20 jim. Figure 7. Veliger of Litlorina
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FEEDING BY LITTORINA 235. Figure 6. High-magnification view of velum of mature Littorina saxatilis larva viewed with epifiuorescence microscopy (FITC filter sell. Larva was exposed to fluorescently labeled albumen for 12 h. Fluorescence appears in the ciliated band of velar cells but not the pretrochal region. Fluorescence is concentrated in small (<2 fim) vacuoles within the prototrochal cells, pr. pretrochal region; v, velum (positioned on ciliated band). Scale bar = 20 jim. Figure 7. Veliger of Litlorina saxatilis. exposed to FITC-BSA and viewed laterally under fluorescent light with FITC filter set. The orientation of this larva is similar to Fig. 3. Immediately posterior to the ciliated band is one of two symmetrically positioned fluorescent regions (larval kidneys) that were found in fully formed veligers. k. larval kidney; v. velum. Scale bar = 75 Figure 8. (A) Mature veliger of Lirturiiiu Minitilis, close to hatching, viewed under transmitted light. Larva was exposed to fluorescently labeled albumen for 12 h. (B) Same larva viewed under fluorescent light with FITC filter set. Fluorescence can be seen in the ciliated cells of the velum, the autofluorescent operculum. and in a short region of the gut. The dim illumination of the foot is due to light reflected from the operculum. f. foot; g, gut; o, operculum; s. shell; u, umbilicus; v. velum. Scale bar = 150 fim. Figure 9. (A) Newly hatched veliger of Limn-imi pli'iiu (planktotroph). viewed under transmitted light. Larva was exposed to fluorescently labeled albumen for 12 h. (B) Same larva viewed under fluorescent light with FITC filter set, showing strong FITC fluorescence in the gut. The operculum is autofluorescent. and the foot is dimly illuminated by light reflected from the operculum. Note absence of fluorescence in the velum, f. foot; g. gut; o, operculum; pc. prototrochal cilia; s. shell; \. velum. Scale bar =
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
