Dispersion during the moult haulout of southern elephant seals at the Courbet Peninsula, Iles Kerguelen

Abstract

We studied the dispersion of 4-year-old southern elephant seals (Mirounga leonina) along a 75.5 km coastal area at the Courbet Peninsula, Iles Kerguelen, relative to their birth site when they were ashore to moult in early 1984. The seals were mostly faithful to their natal sites, but availability of suitable moulting habitat (e.g. wallows, vegetated areas) influenced seal dispersion. As moult progressed, the seals moved farther away from their initial moult sites and natal sites, but remained largely on the easterly beaches of the Courbet Peninsula. This behaviour would facilitate mark-recapture estimates of age and sex specific survival.