... and the African snail ( Martin and Harrison, 1966 ). Inulin is the common substance for measurement of the glomerular filtration rate in vertebrates ( Guyton and Hall, 2006 ). However, the evidence available is not convincing in regard to whether the atrial wall of M ytilus filtrates inulin, because...

... collected naturally voided urine. As a percentage of the infusion rate, glomerular filtration rate increased by about 135%, but urine flow rate (UFR) by only 80 %, reflecting increased tubular reabsorption of H 2 O. During NaCl infusion, virtually all of the extra Na + and Cl - filtered was reabsorbed...

... gairdneri . Fedn Proc. Fedn Am. Socs exp. Biol . 41 , 1260(Abstr .). Elger , B. and Hentschel , H. ( 1983 ). Effects of adrenergic blockade with bretylium and phentolamine on glomerular filtration rate in the rainbow trout, Salmo gairdneri Rich., adapting to saline water . Comp...

... was varied indicate that P GC reflects the area of the active capillaries and the rate of perfusion. Therefore, in the hagfish, P GC appears to be an effect of factors that cause glomerular filtration, not the main cause of that process. Although there is considerable scatter, the data of Table 1 reveal...

... falls to a value of 0·04 kPa within the postcardinal vein efferent to the renal corpuscle. Within the glomerular capillaries the hydrostatic pressure averages 0·21 kPa. Since the blood COP averages about 1–4 kPa, it is clear that glomerular filtration in the hagfish is not underlain by the hydrostatic...