Excerpt from A Morphometric Analysis of Geographic Variation Within Sorex Monticolus (Insectivora, Soricidae)
Straight - line polygons were drawn around the published marginal records (hall, 1981; Hennings and Hoffmann, 1977) for each subspecies to form the 14 a priori' groups (fig. Specimens from localities within a polygon were considered to belong to the taxon for which marginal records were used to produce that polygon. Specimens from localities outside of polygons (n z 107) were not included in the initial analyses, but were as signed to their appropriate groups by use of diagno sis files created with two or three-group discrimi nant analyses between geographically adjacent a priori groups. Because Carraway 1990) consid ered S. Bairdi a distinct species, and my results corroborated this, S. Bairdi (n 110) was used as an outgroup.
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Paperback. Condizione: New. Print on Demand. This book is a definitive study of the evolutionary history of a widespread and morphologically variable mammal, the dusky shrew. Using a quantitative approach with modern analytical techniques, the author assesses the validity of numerous subspecies and finds that many of them are dubious. The author's results have significant implications for understanding the evolution of the dusky shrew and the evolutionary processes that drive variation in mammals. Comprehensive and meticulously researched, this book will be of great interest to mammalogists, evolutionary biologists, and conservationists. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9780243895687_0
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