. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FOOD AND FEEDING OF OYSTER LARVAE 337 The larvae in all ten cultures receiving bacteria and those in the culture receiv- ing flagellate F, an unidentified chrysomonad, grew less rapidly than did those in the unfed control culture (Fig. 1). Moreover, in the ten cultures receiving bacteria, the larvae were all dead by the eleventh day. We can assume that these bacteria and flagellate F were not utilized. In the remaining six cultures that received supplemental food, the larvae grew more rapidly than did those in the unfed cont
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FOOD AND FEEDING OF OYSTER LARVAE 337 The larvae in all ten cultures receiving bacteria and those in the culture receiv- ing flagellate F, an unidentified chrysomonad, grew less rapidly than did those in the unfed control culture (Fig. 1). Moreover, in the ten cultures receiving bacteria, the larvae were all dead by the eleventh day. We can assume that these bacteria and flagellate F were not utilized. In the remaining six cultures that received supplemental food, the larvae grew more rapidly than did those in the unfed control. We can conclude, therefore, 140 130 120 CO z o or 2 no LEGEND B-DICRATERIA INORNATA D- HEMISELMIS RUFESCENS E- CHROMULINA PLEIADES I- ISOCHRYSIS GALBANA « 8-5,000 + 1-10,000 • 0-5,000 + 1-10,000 ••• • £-5,000+1-10,000 B-2,500 + E-2,500 + + 1-5,000 B-5,000 + E-5,000 O Z UJ 100 90 80. ...-« B-5,000+ 0-5,000 • E-5,000 +0-5,000 NO FOOD 70 1 8 DAYS 10 12 14 FIGURE 2. Growth of larvae of C. viryinica fed combinations of flagellates. Each point on a curve represents the mean length of 100 larvae from each of duplicate cultures. Numbers following letter designation of flagellates indicate rate of feeding in number of flagellates per that oyster larvae probably do utilize the five species of flagellates, Dicrateria inornata, Chromulina pleiadcs, Hemiselmis rujesccns, Isochrysis galbana and Py- ramimonas grossii, as well as our "mixed ; Unfortunately, due to difficulties in mass production of the flagellates, we were not able to feed equal numbers of each flagellate nor were we able to keep the rate of feeding constant in the larval culture receiving flagellate B (Dicrateria).. 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 H
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
