. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NEPHROMYCES IN TUNICATES 97 TABLE I Presence of Nephromyces in the renal sac of adult molgulids, 1977-1981. Number Number Species Location examined infected Bostrichobranchus pilularis Gulf Coast (Florida) and Atlantic Coast (Massachusetts) 23/23 Molgula arenata Atlantic (Massachusetts) 23/23 M. citrina Atlantic (Massachusetts) 21/21 M. complanata Atlantic (Massachusetts) 22/22 M. manhattensis Pacific (California) and Atlantic (Florida to Massachusetts) 212/212 M. occidentalis Atlantic and Gulf Coast (Florida) 30/30 RESULTS
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NEPHROMYCES IN TUNICATES 97 TABLE I Presence of Nephromyces in the renal sac of adult molgulids, 1977-1981. Number Number Species Location examined infected Bostrichobranchus pilularis Gulf Coast (Florida) and Atlantic Coast (Massachusetts) 23/23 Molgula arenata Atlantic (Massachusetts) 23/23 M. citrina Atlantic (Massachusetts) 21/21 M. complanata Atlantic (Massachusetts) 22/22 M. manhattensis Pacific (California) and Atlantic (Florida to Massachusetts) 212/212 M. occidentalis Atlantic and Gulf Coast (Florida) 30/30 RESULTS In all adults of all molgulid species examined—Molgula manhattensis, M. citrina, M. complanata, M. arenata, M. occidentalis, and Bostrichobranchus pi- lularis—cells are present in the renal sac lumen (Table 1). These cells differ mark- edly in morphology from tunicate cells, and at least broadly resemble the Ne- phromyces described by earlier authors. These Nephromyces forms can be divided into at least seven broad categories: 1. "Vacuolate filaments": colorless, non-septate filaments, each with a single, large, central vacuole; about 4-10 /urn in width, 15 to about 100 /urn in length (Fig. 2). Some possess terminal swellings; others are occasionally found in multifilament arrays (Fig. 3). The shortest vacuolate cells are, in some species (, M. citrina}, sometimes found packaged within a circular structure (Fig. 4). The cytoplasm of vacuolate filaments sometimes contains yellow refractile granular FIGURE 1. Diagrammatic representation of Nephromyces zoospores from Molgula manhattensis. Bar = 5 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; Lill
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
