. Brimleyana. Zoology; Ecology; Natural history. 78 Christopher King Beachy lowest degree of variability, as expected. But A. maculatum did not exhibit the highest degree of intraclutch variation as was expected (Fig. 2). Interclutch Variation Because embryo diameter begins to increase in late developmental stages, only those clutches of D. santeetlah, D. ochrophaeus, and E. wilderae collected earlier than Harrison developmental stage 30 were used in this analysis. All egg size data for A. maculatum and D. aeneus were analyzed. Mean egg size was determined for each clutch, and those data were
. Brimleyana. Zoology; Ecology; Natural history. 78 Christopher King Beachy lowest degree of variability, as expected. But A. maculatum did not exhibit the highest degree of intraclutch variation as was expected (Fig. 2). Interclutch Variation Because embryo diameter begins to increase in late developmental stages, only those clutches of D. santeetlah, D. ochrophaeus, and E. wilderae collected earlier than Harrison developmental stage 30 were used in this analysis. All egg size data for A. maculatum and D. aeneus were analyzed. Mean egg size was determined for each clutch, and those data were used to calculate a CV of egg size for each species (Table 1). In this analysis, A. maculatum did show the greatest variation in egg size (Fig. 3). Except for E. wilderae, all species CVs were significantly lower than that for A. maculatum. D. aeneus was predicted to exhibit the lowest degree of variation in egg size; only D. ochrophaeus has a lower CV, although this difference was not significant. A. maculatum E. wilderae D. santeetlah D. aeneus D. ochrophaeus. 6 8 Pooled CV 10 12 14 Fig. 3. Coefficients of variation (CV) of pooled (interclutch) variation in egg size for five species of salamanders. The species CVs are tested with an F-test of the squared CVs (Lewontin 1966). Vertical lines indicate means not distinguishable by pairwise F-tests (P > ).. 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 North Carolina State Museum of Natural History. [Raleigh, NC : North Carolina State Museum of Natural History]
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