. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 30 10 15 20 25 30 TEGULA BRUNNEA N = 226 15. 20 30 35 10 15 20 BASAL DIAMETER (mm) FIGURE 1. Size frequency distributions of the total collections of Calliostoina spp. and Tegula brunnea. The relative frequency is the per cent of the total collection for a given species that was in each 1 mm size class. a single mode at 16 mm, and a predominance of large individuals (20-21 mm). The largest snail found (34 mm") belonged to this species. Calliostoma ligatum (Gould, 1849). Twenty-nine out of 39 individuals of this species
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 30 10 15 20 25 30 TEGULA BRUNNEA N = 226 15. 20 30 35 10 15 20 BASAL DIAMETER (mm) FIGURE 1. Size frequency distributions of the total collections of Calliostoina spp. and Tegula brunnea. The relative frequency is the per cent of the total collection for a given species that was in each 1 mm size class. a single mode at 16 mm, and a predominance of large individuals (20-21 mm). The largest snail found (34 mm") belonged to this species. Calliostoma ligatum (Gould, 1849). Twenty-nine out of 39 individuals of this species collected were found on Cystoseira, 13 of these were on the vegetative portions of the algae. Five individuals were found on Ifacrocystis and 5 on Gigartina (Table I). The size-frequency distribution (Fig. 1) shows a single mode at 17-18 mm. Tegula brunnea (Philippi, 1848). One hundred eighty-seven out of 226 T. brunnea collected were from Macrocystis. Eleven were found on Cystoseira, 7 on the vegetative and 4 on the reproductive portions of the algae. Twenty-three specimens were found on Dictyoneuropsis and 5 were on Gigartina (Table I). The size frequency distribution (Fig. 1) shows a single mode at 21-22 mm. TABLE I Per cent of the total collection of each species of snail which was found on a given species of algae. N is the total number of individuals of each snail species collected. Species Cystoseira vegetative Cystoseira repro- ductive Cystoseira total Macro- cystis Dictyoneu- ropsis Gigartina Total N C. annulatum 4 88 92 8 0 0 100 24 C. canal iculatum 4 77 81 19 0 0 100 27 C. ligatum 33 41 74 13 0 13 100 39 T. brunnea 3 2 5 83 10 2 100 226 T. montereyi 8 13 21 51 12 16 100 156 T. pulligo 12 19 31 39 21 9 100 404. 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 Marine Biological Laboratory (Woods Hol
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
