. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. D. PRIMITIVUS POST-LARVAL GROWTH 215 Fitting the data to a power function resulted in the equation: ABDW = • CW1 °'° (r2 = ) Figure 3 shows a log-log transformation, where: log ABDW = -- The slope of indicated isometric growth (/ = , P = ). During growth, abdominal width in females increased more in higher instars, fitting a power curve which, expressed as a log-log function, was given by the equation: log ABDW = -log CW -- (r2 == , N = 226) Regression slopes were si
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. D. PRIMITIVUS POST-LARVAL GROWTH 215 Fitting the data to a power function resulted in the equation: ABDW = • CW1 °'° (r2 = ) Figure 3 shows a log-log transformation, where: log ABDW = -- The slope of indicated isometric growth (/ = , P = ). During growth, abdominal width in females increased more in higher instars, fitting a power curve which, expressed as a log-log function, was given by the equation: log ABDW = -log CW -- (r2 == , N = 226) Regression slopes were significantly different for the sexes (F = , P = ). Analysis of growth of individuals and means for instars (Fig. 3) showed that the relationship was not of simple allometry. There was a change of slope approx- imately between instars 19 and 20 (see arrow Fig. 3). The data were better rep- resented by two separate regressions, for early instars: log ABDW = • log CW -- (r2 = , N = 157) and for later instars: log ABDW ---- CW -- (r2 = , N = 69) Both slopes were significantly greater than 1 (/= , P = and / = , P = , respectively) and hence growth was not isometric but positively allometric. The two slopes were significantly different (F = , P = ), indicating markedly different growth in the two size groups. E E O LLJ QC O 80 O a 2° 50 CARAPACE WIDTH (mm) 100 FIGURE 2. Relative growth of the carapace of Dissodactylus primitivus. Each circle represents a mean measurement for one instar up to instar 28. Number of observations per instar is shown; if not given, number equals that of adjacent instar. Vertical and horizontal lines are standard deviations. Additional points are given for the lone male (A) and the lone female (D) which surpassed instar Please note that these images are extracted from scanned page images that may have been
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
