. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. A -B. 0 I 20 I 2 HOURS FIGURE 3. Responses of the red chromatophores of one-eyed Orconectes on a white back- ground (A) and on a black background (B) to extracts of eyestalks and supraesophageal ganglia, with the circumesophageal connectives attached, of Orconectes clypeatus and Cambarcl- lus shufeldti. Half-filled circles are the control. Open symbols are eyestalk, closed symbols nervous tissue. Circles, tissue of Orconectes; triangles, tissue of Cambarellus. The responses of specimens of Orconectes on black and on white ba
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. A -B. 0 I 20 I 2 HOURS FIGURE 3. Responses of the red chromatophores of one-eyed Orconectes on a white back- ground (A) and on a black background (B) to extracts of eyestalks and supraesophageal ganglia, with the circumesophageal connectives attached, of Orconectes clypeatus and Cambarcl- lus shufeldti. Half-filled circles are the control. Open symbols are eyestalk, closed symbols nervous tissue. Circles, tissue of Orconectes; triangles, tissue of Cambarellus. The responses of specimens of Orconectes on black and on white backgrounds to extracts of supraesophageal ganglia, with the circumesophageal connectives at- tached, of dwarf crayfish and Orconectes were qualitatively similar. Concentration but no dispersion of red pigment in Orconectes was evident in spite of the fact that RPCH and RPDH were present in these extracts (Fig. 2). Eyestalk extracts of Cambarellus, however, caused a transitory concentration of red pigment in Orconectes that was followed by dispersion. Concentration must have been caused by the small amount of RPCH in the eyestalks of dwarf crayfish and dispersion by the large amount of RPDH shown in Figure 2. Extracts of eye- stalks of both species produced equal red pigment dispersion in dwarf crayfish but the eyestalk extract of Orconectes contained much more RPCH (Fig. 2). This difference was probably a contributing factor to the lack of red pigment dispersion in Orconectes with extracts of tissues from Orconectes, because the large amount of RPCH would hinder the expression of RPDH whereas in the eyestalk of Cambarel- lus the titer of RPDH so overbalanced the titer of RPCH that dispersion could not occur. The failure of extracts of Orconectes to disperse red pigment in Orconectes. 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 resemb
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
