. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 F. T. HAXO AND K. A. CLENDENNING detectable only in the third minute of illumination. Successive light exposures reduced, but did not abolish, the induction period (Fig. 2a, b, c, d) and no sugges- tion of an oxygen gush was observed. In the vegetative tissue, however, the oxygen gush and induction period were complete within the first 30 seconds and, upon successive exposures to strong light, oxygen production proceeded at its full rate almost instantaneously, in agreement with the earlier findings of Blinks and Skow (1
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 F. T. HAXO AND K. A. CLENDENNING detectable only in the third minute of illumination. Successive light exposures reduced, but did not abolish, the induction period (Fig. 2a, b, c, d) and no sugges- tion of an oxygen gush was observed. In the vegetative tissue, however, the oxygen gush and induction period were complete within the first 30 seconds and, upon successive exposures to strong light, oxygen production proceeded at its full rate almost instantaneously, in agreement with the earlier findings of Blinks and Skow (1938, Fig. 5; cf. Haxo and Blinks, 1950, Fig. 6). 100 80 CM 60 o 10 40 20 0 DARK. DARK .. VEGETATIVE ° FEMALE MALE 20 40 60 80 100 TIME IN MINUTES 120 140 FIGURE 1. Photosynthesis and respiration of vegetative tissue and fruiting thallus margins in carbonate-enriched sea water at 25° C. Area of thallus disc, cm2. The tissues employed in the foregoing manometric experiment were analyzed for solids, chlorophyll and carotenoids (Table II). The yellowish or male fruiting thallus margin showed the lowest chlorophyll content. The olive-green fruiting margins (in all probability female, but mating responses were not determined in this instance) contained about the same chlorophyll concentration as the vegetative thallus. The carotene contents of both types of fruiting thallus margins were about three times higher than that of the vegetative thallus. The xanthophyll contents of all three samples were essentially the same, so that there was more xanthophyll than carotene in the vegetative tissue, and less xanthophyll than carotene in the reproductive thallus margins. The pigment analyses for the vegetative thalli are. 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 Labor
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
