. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 208 C. P. MANGUM ET AL. TABLE I Oxygen uptake in bivalves with specialized oxygen carriers Species O2 carrier VO2 (Ail/g dry wt-h) Dry wt. (mg) Temp. (°C) Source Ad la cti Vene ••' "iricosa He extracellular Hb Noeliaponderosa intracellular Hb Glycimeris nummaria intracellular Hb ± (6) present data ± (6) 148 5 X 103 ca. +16-20 Kruger, 1957 present data Deaton and Mangum, 10 1976 1 Converted from original data assuming that dry wt. = 20% wet wt. Mean ± SE (n).
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 208 C. P. MANGUM ET AL. TABLE I Oxygen uptake in bivalves with specialized oxygen carriers Species O2 carrier VO2 (Ail/g dry wt-h) Dry wt. (mg) Temp. (°C) Source Ad la cti Vene ••' "iricosa He extracellular Hb Noeliaponderosa intracellular Hb Glycimeris nummaria intracellular Hb ± (6) present data ± (6) 148 5 X 103 ca. +16-20 Kruger, 1957 present data Deaton and Mangum, 10 1976 1 Converted from original data assuming that dry wt. = 20% wet wt. Mean ± SE (n). 1971). R. C. Terwilliger kindly communicated data for polyplacophoran He, which have not been reported in the literature. Observations on the He of the chiton Chae- topleura apliculata were also made together with those reported here. The peak at 345 nm disappears in the presence of sodium borohydride (, Fig. 1). Extracts of the gill of Y. limatula clearly form a pyridine hemochromagen with absorption bands at 542 and 556 nm. High concentrations of red granules also were observed in the nerve ganglia and connectives of this species but not in A. castrensis or N. proxima, which appeared to lack branchioglobin (Bb) as well. However, a seawater extract of the whole bodies of N. proxima appeared to form a pyridine hemochroma-. 320 340 3 50 FIGURE 1. Absorption spectra of protobranch Hcs. (A) Acila castrensis, (N) Nucula proxima, and (S) Solemya velum. Abscissa is wavelength in nm and ordinate is 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.
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