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Development And Control Of Licking Behavior In The Guinea Pig (Cavia Porcellus), Jack R. Alvord
Development And Control Of Licking Behavior In The Guinea Pig (Cavia Porcellus), Jack R. Alvord
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Four non-licking guinea pigs were reinforced with water for successive approximations to licking an operandum feeder. Once all subjects had obtained their total liquid intake for a three-week period by licking, an optimum deprivation schedule was determined.
Fixed ratio and variable interval schedules were found to affect licking behavior of the guinea pig in a similar way as with the rat, mean lick rate of guinea pigs being slightly lower than that of the rat. Precise control over the onset and offset of licking was demonstrated through discrimination training.
Effect Of Stage Of Seedling Development On Absorption Of Selected Pre-Emergent Herbicides, Pairoj Suchinda
Effect Of Stage Of Seedling Development On Absorption Of Selected Pre-Emergent Herbicides, Pairoj Suchinda
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Using radioautography 14C simazine, 14C EPTC, 14C 2,4-D, 1414 DCPA and 14C pyrazon absorption by seeds of bean (Phaseolus vulgaris L.), squash (Cucurbita maxima), corn (Zea mays), onion (Allium cepa) and oat (Avena sativa) was studied. Simazine, EPTC, 2,4-D and pyrazon were absorbed through the seed coat of bean, squash, corn and onion, the amount increasing with time. Little DCPA was absorbed by seeds of bean, squash, onion and oat. Distribution and translocation of 14C simazine, 14C EPTC and 14C pyrazon occurred in …