In vitro uptake of tritiated glucose, tyrosine and leucine by adult Alaria marcianae (La Rue) (Trematoda)

Abstract

1. 1. Autoradiographic studies demonstrated the in vitro uptake of tritiated glucose, tyrosine and leucine by the tegument covering and lateral to the holdfast organ of adult Alaria marcianae (La Rue, 1917). 2. 2. The holdfast organ tegumental surface layer (“cuticle”) showed a regional difference in uptake for all three radiocompounds; the surface layer in the posterior two-thirds exhibited more absorption than that in the anterior one-third. 3. 3. In liquid scintillation counting, a positive correlation was found between the specific activity (dis/min per μg of protein) and the duration of exposure (min) of the flukes to the radiocompounds.