Chapter

The Species Problem Arises

John S. Wilkins

in Species

Published by University of California Press

Published in print August 2009 | ISBN: 9780520260856
Published online March 2012 | e-ISBN: 9780520945074 | DOI: http://dx.doi.org/10.1525/california/9780520260856.003.0006
The Species Problem Arises

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During the so-called eclipse of the Darwinism period, in which neo-Lamarckian ideas overtook Darwin's mechanism of natural selection, species were often thought to be types again. This chapter focuses on the non-Darwinian ideas that became prominent after the period of Darwinism. It discusses orthogenetic Lamarckism, bathmism, and the Baldwin Effect. It also describes Johannes Paulus Lotsy's work, which proposes the evolution of species by hybridization. It also examines the role played by the species concepts in the thinking of several German-speaking biologists in the early part of the twentieth century. In particular, the views of Erwin Stresemann are influential. He claimed that morphology as a criterion of species had been abandoned in favor of physiological divergence, as evidenced by reproductive isolation.

Keywords: Darwinism; neo-Lamarckian ideas; non-Darwinian ideas; orthogenic Lamarckism; bathmism; Baldwin Effect; Johannes Paulus Lotsy; evolution; hybridization; Erwin Streseman

Chapter.  6308 words.  Illustrated.

Subjects: Animal Pathology and Diseases

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