In dogs with chronic parotid fistula, conditioned salivary reactions reinforced by food were established. After bilateral lesions of the dorsomedial part of the amygdaloid complex, the conditioned salivary reactions were greatly diminished. Also the unconditioned salivation decreased. This decrease was greater in dogs which revealed the whole syndrome of amygdalar aphagia, but it was also evide...

The feeding behaviour of Pratylenchus penetrans on root hairs was observed using video-enhanced contrast microscopy. The behayiouk could be separated into phases of probing, ce11 penetration by the stylet, salivation and food ingestion for brief and extended ,periods. &ter cell penetration, a small “ salivation zone ” was formed around the stylet tip. No feeding tubes were observed. The root ha...