. The Australian zoologist. Zoology; Zoology; Zoology. M. L AUGEE surface area (S) from the equation S=10 W0G'. Neither assumption has been verified for monotremes. To reach the final expression for comparison of conduct- ance (cal/cm2/hr/°C) I have used the slope 'C for each subspecies adjusted to a 'mean' echidna weighing 4 kg (and therefore having a surface area 2072 cm2). Table 1 compares this calculated conductance for each subspecies with the only value in the literature (Schmidt-Nielsen et al, 1966). Conductance for the least hairy subspecies, acanthion, is times greater than that f
. The Australian zoologist. Zoology; Zoology; Zoology. M. L AUGEE surface area (S) from the equation S=10 W0G'. Neither assumption has been verified for monotremes. To reach the final expression for comparison of conduct- ance (cal/cm2/hr/°C) I have used the slope 'C for each subspecies adjusted to a 'mean' echidna weighing 4 kg (and therefore having a surface area 2072 cm2). Table 1 compares this calculated conductance for each subspecies with the only value in the literature (Schmidt-Nielsen et al, 1966). Conductance for the least hairy subspecies, acanthion, is times greater than that for the hairiest subspecies, setosus. This represents a greater rate of heat loss in the former subspecies. The value for setosus is in reasonable agreement with the published value. A plot of oxygen consumption vs. temperature differential for the three subspecies upon their SECOND exposure to Ta 10, 15 and 20°C is shown in Fig. 4. Except for the initial (Ta 10°C) value for acanthion, there is no significant. FIG. 3—Heat production vs. temperature differential for T. a. acanthion (closed circles) T. a. aculeatus (crosses) and T. a. setosus (open circles) derived from data in Figs. 1 and 2 for FIRST exposure to Ta 20, 15, 10 and 5°C. FIG. 4—Heat production vs temperature differential for T. a. acanthion (closed circles) and T. a. aculeatus (crosses) derived from data in Figs. 1 and 2 for SECOND exposure to Ta 10, 15 and 20°C. Data for exposure of T. a. setosus (open circles) to both exposures is shown. 108. 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 Royal Zoological Society of New South Wales; Royal Zoological Society of New South Wales. Proceedings. [Sydney, Royal Zoological Society of New South Wales]
Size: 2072px × 1207px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1914
