A Cerebral Asymmetry in Olfactory Control of Social Huddling by Infant Hamsters
Pups of the altricial species, Mesocricetus auratus, are born with little metabolic capacity for heat production (Hissa, 1968). Fortunately, they are endowed with a well developed mechanism for thermotaxis (Leonard, 1974). They orient and locomote toward the warm side of weak thermal gradients, becoming quiescent when their temperature starts to rise. This behavior presumably keeps them in the nest, close to their mother, an important source of heat. In an experimental situation (Leonard, 1982) young pups prefer contact with the warm end to huddling together with littermates. This is adaptive since their littermates are exothermic and do not provide an adequate source of heat.
KeywordsOlfactory Bulb Ventral Striatum Olfactory Tubercle Brain Asymmetry Cerebral Asymmetry
Unable to display preview. Download preview PDF.
- Grafe, M.R., and Leonard, C.M., 1982, Developmental changes in the topographical distribution of cells contributing to the lateral olfactory tract. Develop. Brain Res., (in press).Google Scholar
- Heilman, K., and Valenstein, E., 1978, “Clinical Neuropsychology”, Oxford University Press.Google Scholar
- Heimer, L., 1978, The olfactory cortex and the ventral striatum, in “Limbic Mechanisms: The Continuing Evolution of the Limbic System Concept”, K.E. Livingston and O. Hornykiewicz, eds., Plenum Press, New York.Google Scholar
- Hissa, R., 1968, Postnatal development of thermoregulation in the Norwegian lemming and the golden hamster. Ann. Zool. Fenn., 5:354–383.Google Scholar
- Kent, J., Herkenham, M., and Pert, C., 1982, Autoradiographic visualization of opiate receptor development in the rat. Develop. Brain Res., (in press).Google Scholar
- Leonard, C.M., Williamson, M., and Freund, G., 1981, Asymmetrical effects of early olfactory bulb lesion: Is the hamster brain lateralized? Soc. Neurosci. Abstr., 7:391.Google Scholar
- Morgan, M., 1977, Embryology and inheritance of asymmetry, in: “Lateralization in the Nervous System”, S. Harnad, ed., Academic Press, New York.Google Scholar
- Richman, L., Ribak, C.E., Isaacs, S., Houser, C.R., and Fallon, J.H., 1980, Multiple neurotransmitter studies in the islands of Calleja complex of the basal forebrain. Soc. Neurosci. Abstr., 6:114.Google Scholar
- Schoenfeld, T.A., and Leonard, C.M., 1979, Postnatal synaptic development in the olfactory tubercle of the golden hamster. Anat. Rec, 193:677.Google Scholar
- Schoenfeld, T.A., Street, C.K., and Leonard, C.M., 1980, Maturation of Wallerian degeneration: An EM study in the olfactory tubercle. Soc. Neurosci. Abstr., 5:177.Google Scholar
- Ungerstedt, U., 1971, Stereotaxic mapping of monomine pathways in the rat brain. Acta Physol. Scand. Suppl., 367:1–44.Google Scholar
- Wirsig, C.R., Morasco, J., and Leonard, C.M., 1981, Intracellular accumulation of AChE induced by early olfactory bulb lesions: Intralitter similarities. Soc. Neurosci. Abstr., 7:398.Google Scholar