Showing papers by "Heidelberg University (Ohio) published in 1991"
TL;DR: In this paper, the composition and seasonal dynamics of the crustacean zooplankton communities of a riverine coastal marsh and the adjoining wave zone of Lake Erie were compared over 13 months.
28 citations
TL;DR: To determine the effects of early undernutrition on learning and long-term memory, Swiss mice were cross-fostered randomly at birth to produce litter sizes of 6 and 16, thereby providing “normally nourished" and “undernourished” conditions.
Abstract: To determine the effects of early undernutrition on learning and long-term memory, Swiss mice were cross-fostered randomly at birth to produce litter sizes of 6 and 16, thereby providing “normally nourished” and “undernourished” conditions. At 28 days of age, the pups were housed in groups of 3 and 4, with ad-lib access to food and water until testing began at 60 days of age. Each mouse received 50 active-avoidance training trials daily for 14 consecutive days. Retention testing began 14 days after the end of original training and consisted of 50 trials daily for 5 days. Overall, mice reared in large litters suffered deficits in learning but not in long-term memory.
1 citations