Influence of sex steroid hormones on spatial memory in a songbird

Zoë G Hodgson, Simone L Meddle, Julian K Christians, Todd S Sperry, Susan D Healy

Research output: Contribution to journalArticlepeer-review

Abstract

In mammals, sex steroid hormones influence spatial learning and memory abilities but there are few data regarding such effects in birds. We investigated whether non-invasive sex steroid hormone treatment would affect spatial memory task performance of great tits (Parus major). For five consecutive days, birds were fed wax moth larvae injected with either 80 microg testosterone or 80 microg estradiol carried in peanut oil immediately prior to behavioral testing. During the 5 days prior to and the 5 days following hormone treatment, birds were fed vehicle-injected larvae. Both hormone manipulations resulted in an elevation of circulating hormone levels within 5 min of larva ingestion. This elevation was sustained for at least 30 min but had no short-term (
Original languageEnglish
Pages (from-to)963-9
Number of pages7
JournalJournal of Comparative Physiology A
Volume194
Issue number11
DOIs
Publication statusPublished - 2008

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