. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LARVAE OF OCTOLASMIS MULLERI 257 Tetraselmis allowed complete development to cyprid (Table I). For Monochrysis, stage VI larvae developed in 18-22 days; for Monochrysis/Tetraselwds, larvae developed in 9-10 days. In the latter culture, development time to cyprid ranged from 14 to 18 days. Larvae in the large cultures became tangled in clumps of three to ten individuals, resulting in substantial initial mortality. Otherwise the effects of different algae species were similar to small culture results. Larrae The most significa
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LARVAE OF OCTOLASMIS MULLERI 257 Tetraselmis allowed complete development to cyprid (Table I). For Monochrysis, stage VI larvae developed in 18-22 days; for Monochrysis/Tetraselwds, larvae developed in 9-10 days. In the latter culture, development time to cyprid ranged from 14 to 18 days. Larvae in the large cultures became tangled in clumps of three to ten individuals, resulting in substantial initial mortality. Otherwise the effects of different algae species were similar to small culture results. Larrae The most significant characters for naupliar and cyprid stages follow. Stage I. (Fig. 1, I). Accurately described by Coker (1902), this stage is characterized by curved frontolateral horns projecting caudolaterally and short undeveloped caudal spine and abdominal process. Molting to stage II begins almost immediately after release from the mantle cavity. Stage II. (Fig. 1. II). Present findings vary somewhat on setule arrange- ments indicated by Coker (1902) (Fig. 2). The nauplius assumes a form distinct from reported balanomorph larvae. A long barbed caudal spine and a shorter barbed abdominal process are present. Xo distinct lateral spines exist on the carapace. Frontal filaments are present in this and all subsequent naupliar FIGURE 1. Carapace outlines of the six naupliar stages (I-YI) and cyprid (C) of Octolasinis 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
