. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 FIGURE 1. Top; illustration of a female Palaemon macrodactylus, extruding eggs from the oviduct into a chamber formed by the lateral plates (epimura) of the abdomen and the anterior extensions of the pleopods. Bottom; the extruded eggs are attached to the setae of the pleopods for a two-week brooding period. this material enveloping a well-developed embryo. Adhesive material appeared at ecdysis prior to egg extrusion, but its presence was not necessarily related to extrusion since it appeared at ecdysis even when no ova we
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 FIGURE 1. Top; illustration of a female Palaemon macrodactylus, extruding eggs from the oviduct into a chamber formed by the lateral plates (epimura) of the abdomen and the anterior extensions of the pleopods. Bottom; the extruded eggs are attached to the setae of the pleopods for a two-week brooding period. this material enveloping a well-developed embryo. Adhesive material appeared at ecdysis prior to egg extrusion, but its presence was not necessarily related to extrusion since it appeared at ecdysis even when no ova were in the ovary. Although the adhesive material was externally associated with the central channel of the basipodite, no ducts or direct portals from the interior of the pleopod were observed along the length of the channel. There were, however, long tubules or packets that contained slightly PAS-positive material. These packets (designated mucilage packets) appeared continuous with specialized epithelial cells (mucilage cells) found only in the coxapodite (Figs. 14, 15). The packets extended longitudi- nally into the basipodite (Fig. 16) and, proceeding distally, decreased in number until none could be found. Mucilage packets occurred in anterior, posterior, and median regions of the pleopod and, other than their proximal continuity with mu- cilage cells, showed no particular association with a cell or tissue type (Fig. 17). Mucilage packets were found prior to ecdysis (Fig. 18), but were absent or depleted immediately afterwards, coinciding with the appearance of adhesive material on the external surfaces of the pleopods (Fig. 19).. 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
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
