Snaring to control feral pigs sus scrofa in a remote Hawaiian rain forest

摘要: Abstract Feral pig Sus scrofa control in Kipahulu Valley, a remote rain forest Haleakala National Park, Maui, Hawaiian Islands, has been achieved with snares over 45-month period. Initial densities fenced management units of 6·2 km 2 and 7·8 were estimated at 6 animals/km 14·3 for the two units, based on population reconstruction from animals killed aged. During 45 months study, 1978 set, 1·6 million snare nights logged. Snare density reached 96/km 200/km by end study. A mean effort 43 worker hours/pig was used to remove 53 pigs upper unit, 7 175 more densely populated lower unit. Pig activity monitoring along transects provided good measure effectiveness until about 1 pig/km achieved, after which became less useful than scouting determining activity.