. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 DONALD G. DUNLAP for the Texas speciments of Acris (Fig. 2) are based on 6-8 frogs except for the animals acclimated at 5° C and determined 8 April, 29 April, 4 October and 1 November which means are based on samples of 4—5 frogs. The Texas data are based on a total of 117 animals. Since there was marked variation in the mean body weight of samples of frogs collected at different seasons, the mean metabolic rates shown in Figures 1 and 2 are corrected for body weight. The values for the South Dakota frogs shown in Figure
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 DONALD G. DUNLAP for the Texas speciments of Acris (Fig. 2) are based on 6-8 frogs except for the animals acclimated at 5° C and determined 8 April, 29 April, 4 October and 1 November which means are based on samples of 4—5 frogs. The Texas data are based on a total of 117 animals. Since there was marked variation in the mean body weight of samples of frogs collected at different seasons, the mean metabolic rates shown in Figures 1 and 2 are corrected for body weight. The values for the South Dakota frogs shown in Figure 1 are calculated for frogs of g body weight; for the Texas frogs the. 50 1 April 1 May 1 June 1 July 25 July 1 Oct 1 Nov 1 Doc FIGURE 2. The three lower curves represent routine oxygen consumption in Acris crepitans from Texas at various times of the year determined at 15° C following acclimation of the frogs at 5, 15 and 25° C. Each point on the graph represents the predicted mean metabolic rate for frogs weighing grams. The vertical lines represent the 95% con- fidence intervals for the predicated means. The upper pair of lines represent the mean maximum and mean minimum monthly temperatures at Austin, Texas. Symbols are as in Figure 1. corrected means are for frogs of g body weight. The 95% confidence inter- vals of the means are also shown in Figures 1 and 2. It should be borne in mind, however, that the variation in the width of the confidence intervals is due not only to the variation among variances of the samples but also to the variable sample size and to seasonal differences in the degree of deviation of mean body weights of the samples from the overall mean. Acclimation effects While there were marked differences in mean body size among samples col- lected on different dates, on any one date the samples were stratified with respect. Please note that these images are extracted from scanned page images that may have been digitally enhanced for reada
Size: 1926px × 1297px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
