. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O, BINDING IN CAPITELLIDS 133 Table IV i affinity in relation to known geographic distribution 20 P50 (mmHg) at pH Species Distribution Capitomastus TRIN Trinidad Capilomastus TAR North Carolina Capitomastus VOZ Connecticut (thermal effluent) Capilella sp. II Marseille, Boston Harbor, and Cape Cod Capilella sp. IIIA Boston Harbor and Cape Cod Capitella sp. I Temperate zone cosmopolitan Capitella sp. IA Boston Harbor to New Bedford Capitella MBsl Mission Bay, California Capitom
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O, BINDING IN CAPITELLIDS 133 Table IV i affinity in relation to known geographic distribution 20 P50 (mmHg) at pH Species Distribution Capitomastus TRIN Trinidad Capilomastus TAR North Carolina Capitomastus VOZ Connecticut (thermal effluent) Capilella sp. II Marseille, Boston Harbor, and Cape Cod Capilella sp. IIIA Boston Harbor and Cape Cod Capitella sp. I Temperate zone cosmopolitan Capitella sp. IA Boston Harbor to New Bedford Capitella MBsl Mission Bay, California Capitomastus NCS Uncertain, perhaps Mission Bay, California Capitella ORL Cape Cod The non-linear portion of the records (Fig. 3) represents a combination of (1) Hb deoxygenation and its contri- bution to the O2 being consumed and (2) the diffusion- limited component of O: uptake. This portion can be bisected to provide a numerical estimate of the ambient PO: (PiO:) at which these two processes occur, best ex- pressed as the half constant [ the intersect of the dashed line and the trace of PO: in Fig. 3. The graphical procedure is essentially the same as that detailed by Colman and Longmuir (1963)]. This constant, which would be ex- pected to be strongly influenced by both O: affinity and the magnitude of the diffusion limitation, is in fact highly correlated with body size (r = ; P < .05) and, even more strongly, with P50 (r = ; P < .01) (Fig. 4). The relationship between O2 affinity, environmental temper- ature, and body size is actually syllogistic, with larger body size being found at higher latitudes and smaller animals found at lower latitudes. An interrelationship between PO2, body size, and growth rate has been recently reported in Capitella sp. I by Forbes and Lopez (1990).. P02 Figure 3. The decline in PCK with time due to O2 uptake by two individuals (mean body wet wt. mg) of Capitella ORL at 20°C. The shaded area represents the portion of Oi
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
