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The marine otter (Lontra felina) is a little-known South American otter of conservation concern. We report the 1st detailed information on its activity patterns, home ranges, core areas, and territoriality from 6 otters radio-tracked near a fishing village in central Chile. Marine otters were solitary; females exhibited intrasexual territoriality, but there was no territoriality between males or between sexes. Home ranges were [less than or equal to]4,134 m long and < 110 m wide, and range size did not differ between sexes. Marine otters spent 81% of their time on land, mostly resting, with no preference for day or night. Hence, core areas were associated with resting places and dens. Otters concentrated their activity in the littoral zone associated with refuges on land and with fishing waste, which was used as a food resource. Availability of land refuges, combined with their proximity to food resources, could be a decisive factor influencing the distribution of L. felina. Key words: fishery waste, home range, land refuges, Lontra felina, marine otter, territoriality

Least blossom bats, Macroglossus minimus (Pteropodidae), were monitored by radiotelemetry in lowland rainforest for up to 22 days in Kau Wildlife Area, Madang Province, Papua New Guinea. Based on 1,502 radiotelemetry positions, mean home range for 18 individuals was 5.8 ha [+ or -] 4.6 SD, and mean core-use area was 1.5 [+ or -] 1.3 ha. The mean long axis of the home ranges was 495 [+ or -] 258 m. Activity hotspots were associated with flowering bananas, the primary food resource of least blossom bats at Kau. During the day, M. minimus roosted singly in subcanopy or canopy foliage and showed fidelity to a day-roost area. Mean day-roost area was 0.5 [+ or -] 0.4 ha. Adult males appeared to exclude conspecifics from rich, compact feeding territories in primary forest. Overlap in home range occurred primarily in gardens and between subadults and other bats. Key words: core-use area, day-roost area, Musa, radiotelemetry