The Scent Marking Behaviour of the Brown Hyaena Hyaena Brunnea

Abstract

The deposition onto grass stalks of two distinct, strong-smelling substances produced in the anal scent pouch, is the most common form of scent marking in the brown hyaena. It is called pasting. The behaviour associated with pasting is decribed, as is the related functional anatomy of the scent pouch. The dispersion pattern of pastings within a group territory and the rate of marking in different parts of the territory and the rate of marking in different parts of the territory were ascertained by direct observations on on radio collared hyeanas. The data were analysed by the computer programs SYMAP and SYMVU which graphically display the data as a trhee dimensional map. Brown hyaenas leave most pastings in those areas in which they spend most time. This is in the central part of the territory. When they visit the boundaries. however, the frequency of pasting increases. GLC analyses of the pastings from two known individuals show distinct differences in the relative concentrations of the many compounds in the pastings of each. Behavioural observations show that the hyaenas are able to recognize different individuals' pastings. Pasting could function to infrom groups members of each other's movements as well as to inform outsiders that the territory is occupied.