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1 Acta Theriologica

1 2001

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Behavioural development of conspecific odour preferences in Brandt's vole Microtus brandti

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Zhang L. , Fang J. , Sun R.

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The behavioural development of conspecific odour preferences in Brandt's vole Microtus brandti (Radde, 1861) was evaluated in laboratory tests. During the weaning period (15th-30th day after the birth), the preference of pups to individual odours of their parents, novel adult males and females were examined. Pups investigated odours of unfamiliar adults significantly more than those of their parents and they displayed significantly more jumping and upward visual investigating behaviours on the bedding soiled by unfamiliar adults than they did on the bedding of their parents. However, the frequency of crossing the parent's bedding was significantly higher than the frequency of crossing the bedding of alien adults. It is suggested that odour discrimination ability was associated with the age of pups. The Brandt's vole pups might keep themselves away from unfamiliar environments by keeping away from the novel conspecific odours.