Systematics and the Origin of Species, from the Viewpoint of a Zoologist
Ernst Mayr is perhaps the most distinguished biologist of the twentieth century, and Systematics and the Origin of Species may be one of his greatest and most influential books. This classic study, first published in 1942, helped to revolutionize evolutionary biology by offering a new approach to taxonomic principles and correlating the ideas and findings of modern systematics with those of other life science disciplines. This book is one of the foundational documents of the "Evolutionary Synthesis." It is the book in which Mayr pioneered his new concept of species based chiefly on such biological factors as interbreeding and reproductive isolation, taking into account ecology, geography, and life history. In his new introduction for this edition, Mayr reflects on the place of this enduring work in the subsequent history of his field.
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THE METHODS AND PRINCIPLES OF SYSTEMATICS
TAXONOMIC CHARACTERS AND THEIR VARIATION
PHENOMENA OF GEOGRAPHIC VARIATION
SOME ASPECTS OF GEOGRAPHIC VARIATION
THE SYSTEMATIC CATEGORIES AND THE NEW SPECIES
THE POLYTYPIC SPECIES IN NATURE AND
THE SPECIES IN EVOLUTION
THE BIOLOGY OF SPECIATION
THE HIGHER CATEGORIES AND EVOLUTION
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adapted allopatric analysis animals authors biological butterflies chapter classification color considered described developed discontinuities discussion distinct distribution Dobzhansky Drosophila ecological races evidence evolution evolutionary example exist fact factors fauna forms gall wasps gaps gene genera geneticists genus geographic barriers geographic isolation geographic races geographic speciation geographic variation Goldschmidt graphic groups Guinea habitat higher categories hybrid zone important individual variation insects interbreeding intergradation islands isolated populations isolating mechanisms known lakes localities macroevolution males mammals mating Mayr monotypic morphological mountain mutations naturalists nature North number of species occur Origin of Species ornithologists overlap Palearctic particularly percent phenotypical phylogenetic physiological plants polymorphism range reason recent related species Rensch reproductive isolation seems selection separated sibling species similar single snails Solomon Islands species definition species formation species of birds specimens Stresemann subspecies superspecies sympatric speciation systematist taxonomic taxonomic characters taxonomist tion variability