. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 348 KATHARINE D. HOBSON 200 :150 o C\J O 3,100 0. LU o: 50. A summer, 1964 o fall, 1965 A summer, 1964 • fall, 1965 vagabunda A pacifica WET WEIGHT ( g ) FIGURE 5. Respiration versus wet weight for A. pacifica (AP) and A. claparedi vagabunda (ACV). Values are on a logarithmic scale. ingested that is needed for maintenance can be calculated for Abarenlcola pacifica and A. claparedi vagabunda from their respiration rate, sediment turnover rate, and the average organic matter content of False
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 348 KATHARINE D. HOBSON 200 :150 o C\J O 3,100 0. LU o: 50. A summer, 1964 o fall, 1965 A summer, 1964 • fall, 1965 vagabunda A pacifica WET WEIGHT ( g ) FIGURE 5. Respiration versus wet weight for A. pacifica (AP) and A. claparedi vagabunda (ACV). Values are on a logarithmic scale. ingested that is needed for maintenance can be calculated for Abarenlcola pacifica and A. claparedi vagabunda from their respiration rate, sediment turnover rate, and the average organic matter content of False Bay sediment. Respiration rate The respiration rates of both species were measured in summer, 1964, and fall, 1965, to determine the amount of carbon needed for maintenance. A mod- ification of Conover's (1956) micro-Winkler technique was used. During experi- ments, each lugworm was placed in an opaque 275-ml. bottle filled with sea water that had been filtered through a glass-fiber filter and equilibrated with the atmosphere. Experimental and control bottles were kept at 12 to 14° C. for 3 hours. The oxygen content of a 25-ml. subsample was determined. Between experiments, the worms were kept in sand from their own habitat. The results from unstarved worms that were acclimated to laboratory conditions for more than 12 hours are presented in Figure 5 (an open triangle representing , could not be included on this figure). The logarithms of the values of respiration and wet weight were analyzed by covariance analysis. The two species have significantly different respiration rates (P — « , with 2 and 78 df). The slopes are not significantly different (P = , with 1 and 78 df). The slope of the regression lines (b = , with 95% confidence interval of ) is determined from a narrow size range of experimental animals ( g.) and therefore may not be accurate for the entire size range of the Please note that these images are extract
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
