. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 174 DYRCE LACOMBE AND VINCENT R. LIGUORI CC. cw FIGURE 9. Schematic diagram of the cement glands and their canals in Lcpas anatijcra. VCG, young cement gland; ACG, mature cement gland; Erg, ergastoplasm; CC, collector canal; Vac, vacuole; ICC, intracellular canal; SC, secondary canal; Nuc, nucleolus; PC, principal canal; Lu, lumen; CW, cell wall; Nu, nucleus. pass into the collecting canals which have direct continuity with the secondary canals from which they arise. In Lcpas o not if era the collecting canals branch to form
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 174 DYRCE LACOMBE AND VINCENT R. LIGUORI CC. cw FIGURE 9. Schematic diagram of the cement glands and their canals in Lcpas anatijcra. VCG, young cement gland; ACG, mature cement gland; Erg, ergastoplasm; CC, collector canal; Vac, vacuole; ICC, intracellular canal; SC, secondary canal; Nuc, nucleolus; PC, principal canal; Lu, lumen; CW, cell wall; Nu, nucleus. pass into the collecting canals which have direct continuity with the secondary canals from which they arise. In Lcpas o not if era the collecting canals branch to form the intracellular canals. Balanus tintinnabulum lacks the intracellular canals. The cement glands of Lcpas anatijera (Fig. 1, CG) are found near the ovaries ( < )\•) in the peduncle, just beneath the capitulum or that portion of the animal which contains the major body parts enclosed in calcareous plates. These glands, measuring 30 to 40 microns in diameter in an animal 8 to 10 centimeters in length, have numerous nucleoli (Nuc) usually concentrated near the nuclear membrane and are surrounded by fine chromatin granules (Fig. 2). Each gland cell has a small zone of ergastoplasm (Erg) located near the cell membrane (Fig. 3). Vacuoles, varying in size, are found throughout the cytoplasm but in some instances the larger vacuoles (Vac) accumulate near the intracellular canals (Figs. 4 and 5, ICC). Collecting canals (CC) are limited to a small region at the cell pole nearest the secondary canal (Figs. 6 and 7). The cement glands for Balanus tintimiabiilitin and their canals are shown schematically in Fig. 8. The gland cells are dispersed among the interfollicular spaces of the ovary and are characterized histologically by a marked polarity in their staining reactions. When. 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 perfectly resemble the o
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
