. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 292 D. J. EERNISSE >> 20 SJ iijIIIHIjju 10 15 20 BH ..IiIIIWji, .... 5 10 15 20. li BC Jin 10 PP 30 40 10 Length (mm) .. . 20 Figure 4. Size frequencies in Lepidochitona dentiens and L. hart- wegii as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as n; x ± ; xma,) are as follows: (4a) 145; ± ; ; (4b) 304; ± ; ; (4c) 55; ±; ; (4d)23; ±; ; (4e) 105; ±
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 292 D. J. EERNISSE >> 20 SJ iijIIIHIjju 10 15 20 BH ..IiIIIWji, .... 5 10 15 20. li BC Jin 10 PP 30 40 10 Length (mm) .. . 20 Figure 4. Size frequencies in Lepidochitona dentiens and L. hart- wegii as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as n; x ± ; xma,) are as follows: (4a) 145; ± ; ; (4b) 304; ± ; ; (4c) 55; ±; ; (4d)23; ±; ; (4e) 105; ± ; ; (4f) 50; ± ; Site abbreviations explained in Figure 1 legend. ported by Heath (1907) (as T. raymondi). For unknown reasons in samples spread throughout the year, a high percentage of recently collected animals began brooding when brought into the lab, even during periods when no animals were observed brooding in the field (Fig. 3câ open symbols). Size The Lepidochitona considered here consist of five spe- cies with small adults and one, L. hartwegii, with me- dium-size adults (Figs. 4, 5). Among the brooding spe- cies, L. thomasi is largest but is still small compared to other chiton species. In the populations sampled, L. tho- masi is characterized by a significantly greater mean length than L. caverna and L. femaldi (Student /-test; P < in both cases), and also has a significantly larger minimum brooding size (P < in both cases). Smaller maximum adult size in L. caverna and L. fer- naldi thus corresponds to smaller size at first reproduc- tion. For each of the brooding populations, there is no apparent change in frequency of brooding with increas- ing size. The size characteristics of a species vary significantly among populations, including comparisons of L. hart- wegii (Fig. 4e, f), L. dentiens (Figs. 4a-d), and L. caverna (Figs. 5c, d) (P < in each case). These size differ- ences between populations were cons
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
