. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 470 A. M. DE L. CASTRUCCI AND E. G. MEXDES .,. FIGURE 1. Chromatophores of Pardioniscus urt/cutiuus just released from the pouch. FIGURE 2. Beginning of pigmentation in Annudillidiitin -c'lili/arc (age 21 days). FIGURE 3. Beginning of pigmentation in Porccllio luci'is (age 26 days). FIGURE 4. Pigmentary system of Armadillidium vitlijarc (adult). only in the ommatidea. As shown in Figure 1. single chromatophores exist on the edges of the carapace of P. argentinUs just liberated from the pouch, whereas body pigmentation after
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 470 A. M. DE L. CASTRUCCI AND E. G. MEXDES .,. FIGURE 1. Chromatophores of Pardioniscus urt/cutiuus just released from the pouch. FIGURE 2. Beginning of pigmentation in Annudillidiitin -c'lili/arc (age 21 days). FIGURE 3. Beginning of pigmentation in Porccllio luci'is (age 26 days). FIGURE 4. Pigmentary system of Armadillidium vitlijarc (adult). only in the ommatidea. As shown in Figure 1. single chromatophores exist on the edges of the carapace of P. argentinUs just liberated from the pouch, whereas body pigmentation after liberation starts approximately on the 21st day in A. I'lilc/arc ( Fig. 2) and on the 26th day in P. lacvis ( Fig. 3 ). In the three cases, the single chromatophores grow in number and apparently fuse in a syncytial network with time, as shown in Figure 4 for A. rnlgarc. I'.lcctnni microscopy o\ the pigmentary systems In all of the terrestrial forms studied, there is a layer of typical epithelial cells under the chitin, overlying the very thin pigmentary network. This network is in fact formed by contiguous stellate elements whose arms spread under the epithelial layer and contain electron-dense pigment granules. These granules are round and possess a single membrane. The elements have a unit membrane ; and, where the arms of two elements contact, there is a very thin layer of connective tissue in the. 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, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
Size: 1732px × 1443px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
