. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 10. Diagrammatic representation of the sequential development of the cerata from the primary cerata (AP, anterior primary ceras; PP, posterior primary ceras). d, C2 and Ct represent the right cerata of pairs while Ca is a single posterior ceras. Other structures shown include the oral tentacle (T), anal opening (A), heart bulge (H) and rhinophore (R). tiates at the posterior extremity of the nudibranch body (Fig. 10). The foot extends beyond this portion of the body. The cnidosacs of these new cerata dif- ferentiate s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 10. Diagrammatic representation of the sequential development of the cerata from the primary cerata (AP, anterior primary ceras; PP, posterior primary ceras). d, C2 and Ct represent the right cerata of pairs while Ca is a single posterior ceras. Other structures shown include the oral tentacle (T), anal opening (A), heart bulge (H) and rhinophore (R). tiates at the posterior extremity of the nudibranch body (Fig. 10). The foot extends beyond this portion of the body. The cnidosacs of these new cerata dif- ferentiate several days after the initial cerata formation. The fourth pair of cerata develop just behind the second pair of primary cerata. Cerata formation continues in pairs \vith a second lower group being established on either side of the middle two rows. At this stage the nudibranchs measure mm in length. The eyes gradually sink to a position on either side of the cerebral ganglion and are relatively small at this later stage in comparison to earlier post-hatch stages. The cerata are not as bulky in the mm length nudibranchs and the whole animal takes on a slender adult-like appearance. There are scattered spots of white epidermal pigmentation at the four-cerata stage and as the animal continues to differentiate they coalesce into rings around the cerata (Fig. 2). The adult heart is clearly visible and beating at a length of mm (Fig. 11).. FIGURE. 11. Juvenile Coryphella stimpsoni showing development of cerata at a length of 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 18
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
