Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/95204
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dc.contributor.authorSapolsky, Robert M.en
dc.contributor.authorMitra, Rupshien
dc.date.accessioned2013-02-28T06:20:50Zen
dc.date.accessioned2019-12-06T19:10:17Z-
dc.date.available2013-02-28T06:20:50Zen
dc.date.available2019-12-06T19:10:17Z-
dc.date.copyright2012en
dc.date.issued2012en
dc.identifier.citationMitra, R., & Sapolsky, R. M. (2012). Short-Term Enrichment Makes Male Rats More Attractive, More Defensive and Alters Hypothalamic Neurons. PLoS ONE, 7(5), e36092.en
dc.identifier.issn1932-6203en
dc.identifier.urihttps://hdl.handle.net/10356/95204-
dc.identifier.urihttp://hdl.handle.net/10220/9305en
dc.description.abstractInnate behaviors are shaped by contingencies built during evolutionary history. On the other hand, environmental stimuli play a significant role in shaping behavior. In particular, a short period of environmental enrichment can enhance cognitive behavior, modify effects of stress on learned behaviors and induce brain plasticity. It is unclear if modulation by environment can extend to innate behaviors which are preserved by intense selection pressure. In the present report we investigate this issue by studying effects of relatively short (14-days) environmental enrichment on two prominent innate behaviors in rats, avoidance of predator odors and ability of males to attract mates. We show that enrichment has strong effects on both the innate behaviors: a) enriched males were more avoidant of a predator odor than non-enriched controls, and had a greater rise in corticosterone levels in response to the odor; and b) had higher testosterone levels and were more attractive to females. Additionally, we demonstrate decrease in dendritic length of neurons of ventrolateral nucleus of hypothalamus, important for reproductive mate-choice and increase in the same in dorsomedial nucleus, important for defensive behavior. Thus, behavioral and hormonal observations provide evidence that a short period of environmental manipulation can alter innate behaviors, providing a good example of gene-environment interaction.en
dc.language.isoenen
dc.relation.ispartofseriesPLoS ONEen
dc.rights© 2012 The Authors.en
dc.subjectDRNTU::Science::Biological sciencesen
dc.titleShort-term enrichment makes male rats more attractive, more defensive and alters hypothalamic neuronsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Biological Sciencesen
dc.contributor.departmentDivision of Psychologyen
dc.identifier.doihttp://dx.doi.org/10.1371/journal.pone.0036092en
dc.description.versionPublished versionen
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