. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. KMO 00 200 300 *00 500 600 700 800 HOC* SURFACE—SQUARE CENTIMETERS 100 20O 300 400 500 600 700 600 BODY SURFACE — SQUARE CENTIMETERS FIGURE 2. Relation of body surface area to body weight in menhaden (Brcvoortia tyran- nus) and toadfish (Opsanus tau). For comparison with observed values area computed on the basis K — IQ is also shown. The curves of Figure 2 are not on the same scale as those of Figure 1. sibility in this case that the difference may be accounted for by error in the technique of determining the surface area o
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. KMO 00 200 300 *00 500 600 700 800 HOC* SURFACE—SQUARE CENTIMETERS 100 20O 300 400 500 600 700 600 BODY SURFACE — SQUARE CENTIMETERS FIGURE 2. Relation of body surface area to body weight in menhaden (Brcvoortia tyran- nus) and toadfish (Opsanus tau). For comparison with observed values area computed on the basis K — IQ is also shown. The curves of Figure 2 are not on the same scale as those of Figure 1. sibility in this case that the difference may be accounted for by error in the technique of determining the surface area of the small fish; but it seems more probable to as- sume that the difference in K value is due to differences in body proportions. Young menhaden are shorter bodied in relation to depth and are more compressed than adults. Four small thread herring of approximately the same shape as the small menhaden also showed higher values for K than did the adult menhaden. In the surface area determinations on fishes the fins were excluded. Fish fins are modified in many ways and were they included as part of the body surface, the body area determinations would be misleading. For example, it was found experi- mentally that if the surface area of the pectoral fins of the red-winged sea robin was included as part of the body surface area, the value of K would rise to 17 instead of when fins are omitted. The magnitude of the deviations from the mean in the toadfish (Fig. 2) indicates the difficulty in accurately determining the surface area of some species. This raises the question of the value, in many cases of marine fishes, of expressing metabolism in terms of surface area as opposed to expressing it in terms of body weight, which can be so much more accurately and quickly determined. SUMMARY The value of K in the formula S = K zc>2/3 has been determined for 39 species of marine teleosts representing 25 families. The values of K are in general higher for depressed and compress
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
