. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 148 P. J. H. HARRISON AND D. C. SANDEMAN. Figure 3. (A) Horizontal section through the cyprid brain. The brain is composed mainly of centrally positioned neuropil (NP) and surrounding cell somata. The anterior portion of the brain extends laterally to form the optic lobes. Also apparent are the compound eyes (CE), cement glands (CG). and cross-sections of the cement ducts (*), which extend to the adhesive discs of the antennules (see also Figure 7). OC, oil cell. (B) Longitudinal section of the cyprid brain showing clusters
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 148 P. J. H. HARRISON AND D. C. SANDEMAN. Figure 3. (A) Horizontal section through the cyprid brain. The brain is composed mainly of centrally positioned neuropil (NP) and surrounding cell somata. The anterior portion of the brain extends laterally to form the optic lobes. Also apparent are the compound eyes (CE), cement glands (CG). and cross-sections of the cement ducts (*), which extend to the adhesive discs of the antennules (see also Figure 7). OC, oil cell. (B) Longitudinal section of the cyprid brain showing clusters of somata with primary neurites (arrows) that project to the neuropil (NP). The circular deutocerebral neuropil (see also Fig. 5) is outlined. (C) Electron micrograph of the brain in near sagittal section highlighting projections of neurons (single arrow) into the central neuropil (NP) and the delineation of the neuropil by spindle-shaped glia (double arrows). ME, median eye. t'/ <;/., 1992; Hildebrand and Shepherd, 1997) were not seen in this region. Lateral lobes of the median deutocerebral neuropil are linked by the deutocerebral commissure and receive primary neurites from surrounding cell somata, par- ticularly those located ventrolaterally to this neuropil. Pos- terior projections from the median protocerebral neuropils contribute to the circumesophageal connectives and travel in bundles distinct from those associated with the median protocerebral neuropil (Fig. 5). The antennules and associated cement glands are inner- vated by the antennular nerves, which link to the deutoce- rebral neuropil (Fig. 4A, B). Detailed morphological de- scriptions of the cyprid antennule are available for both B. ainphitrite (Clare and Nott. 1994; Glenner and H0eg, 1995). 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 original
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
