. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 466 T. J. HILBISH AND F. J. VERNBERG - I03 E LU H O. yj ** *** i 2 i 3 MOLT FIGURE 2. Relative growth rates in width for Eurypanopeus depressm for each intermolt interval. Growth rates are reported in mm/mm/molt. Each symbol indicates the mean growth rate for each of the six families used in the analysis. Significant variation among families is indicated along the abcissa with an asterisk (*P < , **P < , ***P < ). is a function of the length of time between molts. Therefore the previous ana
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 466 T. J. HILBISH AND F. J. VERNBERG - I03 E LU H O. yj ** *** i 2 i 3 MOLT FIGURE 2. Relative growth rates in width for Eurypanopeus depressm for each intermolt interval. Growth rates are reported in mm/mm/molt. Each symbol indicates the mean growth rate for each of the six families used in the analysis. Significant variation among families is indicated along the abcissa with an asterisk (*P < , **P < , ***P < ). is a function of the length of time between molts. Therefore the previous analysis may confuse variation in the interval between molts with variation in growth rate. This artifact is minimized by expressing relative growth on a daily rather than per molt basis. Relative daily growth in length varied during development and was strongly de- pendent upon family. Relative increase in length was initially high, averaging mm/mm/day, but declined steadily with each molt (Fig. 3). The average daily growth rate was mm/mm/day between the fifth and sixth molts. Daily growth rates in length also exhibited a significant family effect. Between molts 1 and 2, families 1, 3, 5, and 6 grew at nearly double the rates of families 2 and 4 (P < ; Table I; Fig. 3). In the interval between molts 2 and 3 and between molts 3 and 4 there were no significant differences among families in daily growth rates (Table I). The variance in daily growth rate among families was again significant (P < ; Table I) between molts 4 and 5. There was also significant variation among families between molts 5 and 6 (P < , Table I). There was a clear change in the rank order of relative growth rates among the families with progressing development. Families 2 and 4 were initially the slowest growing groups, but by the final molt interval they were the fastest growing families (Fig. 3). Relative daily growth rates for width decreased steadily with each successive mol
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
