. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 264 V. G. DETHIER theless, as was pointed out in the case of olfactory responses (Dethier, 1952a), the results represent from the point of view of the integrated organism a behavioral summation of no little importance. The action of unacceptable compounds (propanol, HC1, NaCl) on one-legged and two-legged flies appears at first to follow an entirely different pattern from that observed with sucrose. Bilateral thresholds are not lower than unilateral DO o cr Q. O O UJ ~3 LJ 01 UJ o <r LJ 0. O I LEG-PROPANOL IN
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 264 V. G. DETHIER theless, as was pointed out in the case of olfactory responses (Dethier, 1952a), the results represent from the point of view of the integrated organism a behavioral summation of no little importance. The action of unacceptable compounds (propanol, HC1, NaCl) on one-legged and two-legged flies appears at first to follow an entirely different pattern from that observed with sucrose. Bilateral thresholds are not lower than unilateral DO o cr Q. O O UJ ~3 LJ 01 UJ o <r LJ 0. O I LEG-PROPANOL IN SUCROSE • 2 LEGS-PROPANOL IN SUCROSE / /. LOG MOLAR CONC. PROPANOL FIGURE 2. Comparison of the distribution of rejection thresholds for propanol, as a func- tion of concentration, for flies stimulated unilaterally or bilaterally. The broken line represents the theoretical distribution of bilateral thresholds (two-legged flies) calculated from the ex- pression 1-g2 where q equals the fraction of the population of one-legged flies not responding. thresholds as might have been expected and as the spot tests (comparison VI) show. Actually, data from the spot tests and from complete concentration tests are in agreement, and supplementation occurs in much the same manner as it does with sucrose. The following explanation of the one-legged and two-legged fly ex- periments should clarify this point: (1) less sucrose is required to elicit a re- sponse from two-legged than from one-legged flies; (2) in most of the experi- ments with propanol and HC1, the test solutions contained M sucrose regardless. 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, Fra
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
