. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE-HISTORY OF BOCCARDIA HAMATA 323 TABLE I Rate of development of Boccardia hamata larvae liberated from the same egg string Date Stage or setiger No. Days after liberation 7-10-63 Trochophore 7-11 Late trochophore 7-13 3 7-15 4 7-18 6 0 7-19 6-7 1 7-23 8 5 7-24 9 6 7-29 13 11 7-31 12-16 13 8-5 19 18 8-6 17-19 19 8-11 15-20 24 8-12 23 25 8-14 18 27 8-23 23 36 8-24 22-30 37 9-18 19-27 62 variable. Length of pelagic life of east coast forms is estimated to be two and one half to three weeks. 2. Development of west coast larv
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE-HISTORY OF BOCCARDIA HAMATA 323 TABLE I Rate of development of Boccardia hamata larvae liberated from the same egg string Date Stage or setiger No. Days after liberation 7-10-63 Trochophore 7-11 Late trochophore 7-13 3 7-15 4 7-18 6 0 7-19 6-7 1 7-23 8 5 7-24 9 6 7-29 13 11 7-31 12-16 13 8-5 19 18 8-6 17-19 19 8-11 15-20 24 8-12 23 25 8-14 18 27 8-23 23 36 8-24 22-30 37 9-18 19-27 62 variable. Length of pelagic life of east coast forms is estimated to be two and one half to three weeks. 2. Development of west coast larvae The foregoing account agrees with observations on west coast larvae except as noted below. 1) Differences in pigmentation: The dorsal pigment pattern includes a transverse band on the second setiger (Fig. 6). This band makes setigers 1, 2 and 3 appear FIGURE 6. A pelagic 13-setiger larva from the Pacific coast in dorsal view. Nototrochs, gut and neurosetae have been omitted. 02mm. 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 Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
