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We examined responses of adult male Mongolian gerbils to nest site and young during the hours preceding and days following birth of a litter. We found that (a) male at tendance at the nest site was markedly, reduced for several hour following the birth of pups, (b) this lack of contact by males with nest and pups did not result from active exclusion of males from the nest by their mates; (c) males lacking previous experience of pups, but not those familiar with pups, avoided contact with pups on the day of their birth, and (4) 3-day-old gerbil pups were attractive even to males encountering young for the first time. (C) 2000 John Wiley & Sons
Adult. --- Biparental care. --- Birth. --- Contact. --- Early experience. --- Experience. --- Gerbil. --- Gerbils. --- Habituation. --- Infanticide. --- Male mongolian gerbils. --- Male. --- Males. --- Maternal-behavior. --- Meadow voles. --- Microtus-pinetorum. --- Mongolian gerbil. --- Mongolian gerbils. --- Mongolian-gerbil. --- Mother. --- Neonates. --- Nest. --- Parental behavior. --- Parental responses. --- Paternal behavior. --- Paternal care. --- Pup contact. --- Pups. --- Rats. --- Response. --- Responses. --- Rodents. --- Time. --- Young.
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Spatial learning and memory involves the ability to encode geometric relationships between perceived cues and depends critically on the hippocampus. Visually guided spatial learning has been demonstrated in adult animals. As infant animals rely heavily on olfaction, olfactory based spatial learning was assessed in infant mice. When 12-day-old pups were displaced from their nest, they learned within a few training trials to use the spatial pattern of odor cues to move back to the nest. However, mouse pups that over-expressed Ca2+/calmodulin-dependent protein kinase (CaMKII) in hippocampal neurons were impaired in olfactory based spatial learning. NeuroReport 11:1051-1055 (C) 2000 Lippincott Williams & Wilkins
Ability. --- Adult. --- Animal. --- Animals. --- Autophosphorylation. --- Camkii. --- Cues. --- Dependence. --- Hippocampal-neurons. --- Hippocampal. --- Hippocampus. --- Homing pigeons. --- Infant. --- Learning. --- Ltp. --- Mammals. --- Memory. --- Mice. --- Mouse pup. --- Mouse. --- Navigation. --- Neonatal. --- Nest. --- Neurons. --- Odor. --- Olfaction. --- Olfactory. --- Ontogeny. --- Pattern. --- Protein kinase-ii. --- Protein. --- Pups. --- Rats. --- Spatial learning. --- Spatial. --- Threonine-286. --- Training.
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