Table 5.

Allometric function PR_V = aV^b between volume-specific pumping rate [PR_V, ml min⁻¹ (cm sponge)⁻³] and sponge size (V, cm³) calculated for the same specimens as in Table 3 above.

Species	a	b	R2	p	Sponge size (cm3)		Estimated PRV [ml min−1 (cm sponge)−3] for		PRV ratio
					Vmax	Vmin	PRVmax	PRVmin	Vmin/Vmax
D. avara	17.88 ± 2.94	−0.22 ± 0.06	0.28	0.0007	148	1.5	6	17	3
C. crambe	26.24 ± 2.23	−0.29 ± 0.06	0.38	<0.0001	25	0.8	10	28	3
P. ficiformis	5.01 ± 0.71	−0.19 ± 0.04	0.34	<0.0001	421	3.12	1.6	4	3
C. reniformis	26.31 ± 4.84	−0.49 ± 0.07	0.54	<0.0001	181	2.72	2	16	8
A. oroides	30.39 ± 3.56	−0.70 ± 0.06	0.86	<0.0001	440	2.98	0.4	14	33

Data are expressed as the regression coefficient ± standard error. To illustrate the potential range of such estimates V_max and V_min are the volumes of the largest and smallest multi-osculated specimens measured for each species, and PR_Vmax and PR_Vmin are the estimated volume-specific pumping rates calculated for these specimens using the allometric functions reported in this table. The ration of these estimated PR_V varied from 3 to 33 folds depending on species. The probability that the exponent b is zero was <0.001 for all species.