. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 266 WILLIAMS, BARNESS AND SAWYER As shown in Table III and Figure 1, the results obtained from the analyses of individual thoraces were essentially identical with those obtained from entire Drosophila. WING-BEAT FREQUENCY DURING CONTINUOUS FLIGHT The changes which occur in the frequency of wing-beat during continuous flights to exhaustion reflect the response of the neuromuscular system, in terms of the frequency of its activity, to the progressive decrease in glycogen con- centration. 170 r- 160 LJ CO \ CO 150 LJ CO 140 LJ
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 266 WILLIAMS, BARNESS AND SAWYER As shown in Table III and Figure 1, the results obtained from the analyses of individual thoraces were essentially identical with those obtained from entire Drosophila. WING-BEAT FREQUENCY DURING CONTINUOUS FLIGHT The changes which occur in the frequency of wing-beat during continuous flights to exhaustion reflect the response of the neuromuscular system, in terms of the frequency of its activity, to the progressive decrease in glycogen con- centration. 170 r- 160 LJ CO \ CO 150 LJ CO 140 LJ GO ID O ^ ^130 O z LJ O "20 LJ tr L_ i O I" 100 O O O. 20 40 6O 8O 100 120 140 160 TIME (MIN.) FIGURE 2. The wing-beat frequency of Drosophila during a continuous flight to exhaustion. The frequencies of wing movement were measured at 10-second intervals and averaged over 10-minute intervals. Animal five days old. The exact shape of the fatigue curve obtained when wing-beat frequency is thus considered as a function of time differs in detail among the various species of Drosophila and among individuals of a single species. For Drosophila funebris it was nevertheless clear that, except in very young or very old individuals, the frequency of wing-beat did not ordinarily undergo any large change, at 20° C., during a considerable period after the initiation of flight. This is apparent in the. 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, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
Size: 1605px × 1557px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
