@article {38889,
	title = {Buterflies and plants: a study in coevolution},
	journal = {Evolution},
	volume = {18},
	year = {1964},
	month = {1964},
	pages = {586 - 608},
	abstract = {The reciprocal evolutionary relationship of buterflies and their food plants have been examined on the basis of an extensive survey of patterns of plant utilisation and information on factors affecting food plant choice. The evolution of secondary plant substances and the stepwise evolutionary response to these by phytophagus organisms have clearly been the dominant factors in the evolution of buterflies and other phytophagus groups. Furthermore, these secondary plant substances have probably been critical in the evolution of angiosperm subgroups and perhaps of angosperms themselves. The examinaion of broad patterns of coevolution permits several levels of predicitions and shows promise as a route to the understanding of community evolution. Little infomation useful to the reconstruction of phylogenenies is supplied. It is apparent that reciprical selective responses have been greatly underrated as a factor in the origination of organic diversity. The paramount importance of plant-herbivore interactions in generating terrestrial diversity is suggested. For instance, viewed in this framework the rich diversity of tropical communities may be traced in a large part to the hospality of warm climates towards poikilothermic phytophagus insects.},
	author = {Ehrlich,Paul R. and Raven,Peter H.}
}
