. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION IN NASSARIUS 121 stimulatory capacity stemmed from a group of compounds. Solutions containing only Solution A (10 amino acids), glycine, betaine, or lactate (or glycine-betaine- lactate) were considerably less effective than Solution A-betaine-lactate. Tbe effectiveness of the Solution A-betaine-lactate combination was not simply a func- tion of the presence of more organic molecules; actually there were considerably fewer molecules present in the stimulatory solutions produced from combining Solution A, betai
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION IN NASSARIUS 121 stimulatory capacity stemmed from a group of compounds. Solutions containing only Solution A (10 amino acids), glycine, betaine, or lactate (or glycine-betaine- lactate) were considerably less effective than Solution A-betaine-lactate. Tbe effectiveness of the Solution A-betaine-lactate combination was not simply a func- tion of the presence of more organic molecules; actually there were considerably fewer molecules present in the stimulatory solutions produced from combining Solution A, betaine, and lactate than in the less effective solutions containing only certain of these constituents. 90 80 Z 70 o V) 6°1 ID o: 50- Ul <T : LU °-20H 15 10-. 20 50 • O a. to « CD 45 O a: a. <o 100 200 500 1000 2000 DOSE ^IMOml test solution) FIGURE 4. Responses given by N. obsolctus to a shrimp extract and to certain compounds identified in shrimp extracts. Per cent response (left ordinate) and probit response (right ordinate) are plotted as a function of dose (abscissa-logio scale). The experimental dosage- response values are indicated by symbols. Numbers next to symbols for tests of shrimp extract and Solution A indicate numbers of snails tested; numbers of snails tested with other prepara- tions were given in Figure 3. Regression lines were drawn from computed effective dose values obtained by Potency Probit Analysis. No regression lines were computed for results obtained with Solution A or betaine. The potencies (and 95% confid. lims.) given below were computed with respect to the potency of shrimp extract: Soln. A-betaine-lactate Lactate Glycine-betaine-lactate Glycine Soln. A Betaine Upper lim. Potency Lower lim. Upper lim. Potency Lower lim. Upper lim. Potency Lower lim. Upper lim. Potency Lower lim. Not computed Not computed. Please note that these images are extracted fr
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
