id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-020941-1qwbkg9o	HODDLE, MARK S.	Biological Control of Vertebrate Pests	2007-09-02		.txt	text/plain	14119	661	35	Historical records indicate that the majority of attempts at vertebrate biological control have been ad hoc efforts and not the product of careful studies designed to elucidate factors and conditions likely to affect the impact of natural enemy introductions on pest populations. Biological control should be fostered internationally because many countries experience similar problems (e.g., rabbits are agricultural pests in Argentina, Australia, Chile, Europe, and New Zealand; rats, cats, and dogs attack endangered faunas on many oceanic islands; feral pigs and goats in New Zealand, Australia, and the United States degrade habitat and threaten endangered flora). Rabbit populations in Australia and New Zealand are maintained at low levels by introduced predators, but regulation only occurs after pest numbers have been reduced by other means.	./cache/cord-020941-1qwbkg9o.txt	./txt/cord-020941-1qwbkg9o.txt