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It is a bit humbling to realize that man and rat have had greater impacts on the islands of the Pacific than any other mammals, that rats are firmly established on practically all those islands, and that they are responsible for destruction or contamination of man's crops and food supply, for damage to his houses and other property, and that they often carry disease to human beings.
Control of rodents presents different problems in the tropical Pacific than in temperate zones. For this reason, some admirable experiments were carried on in Ponape and on an atoll (Ponape being a high island), involving study of habits and habitat, distribution and numbers, growth and development, reproduction, modification of environment, study of damage to coconut trees, cacao plantings (sugar had been studied elsewhere), and control by bait and poison.
This material is especially interesting to a medical man just returned from a trip
Gorrell RL. Pacific Island Rat Ecology: Report of a Study Made on Ponape and Adjacent Islands, 1955-1958. Arch Intern Med. 1963;112(6):1008. doi:10.1001/archinte.1963.03860060220054
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