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    Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas
    Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas
    Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas
    Ebook62 pages35 minutes

    Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas

    By Sydney Anderson

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    LanguageEnglish
    PublisherArchive Classics
    Release dateNov 15, 2013
    Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas
    Author

    Sydney Anderson

    Sydney Golden Anderson is a maker, grower, and friend of pollinators. She earned a BS in ecology from UNC Asheville and an MA in community-based education from the School of the Art Institute of Chicago. She is the senior community habitat coordinator for the National Wildlife Federation and lives in the foothills of Colorado. Follow Anderson at @tiger.swallowtail.

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      Book preview

      Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas - Sydney Anderson

      The Project Gutenberg EBook of Subspeciation in the Meadow Mouse, Microtus

      pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas, by Sydney Anderson

      This eBook is for the use of anyone anywhere at no cost and with

      almost no restrictions whatsoever. You may copy it, give it away or

      re-use it under the terms of the Project Gutenberg License included

      with this eBook or online at www.gutenberg.org

      Title: Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas

      Author: Sydney Anderson

      Release Date: July 19, 2010 [EBook #33204]

      Language: English

      *** START OF THIS PROJECT GUTENBERG EBOOK SUBSPECIATION IN THE MEADOW MOUSE ***

      Produced by Chris Curnow, Joseph Cooper and the Online

      Distributed Proofreading Team at http://www.pgdp.net

      University of Kansas Publications

      Museum of Natural History

      Volume 9, No. 4, pp. 85-104, 2 figs. in text

      May 10, 1956

      Subspeciation in the Meadow Mouse,

      Microtus pennsylvanicus, in Wyoming,

      Colorado, and Adjacent Areas

      BY

      SYDNEY ANDERSON

      University of Kansas

      Lawrence

      1956

      University of Kansas Publications, Museum of Natural History

      Editors: E. Raymond Hall, Chairman, A. Byron Leonard,

      Robert W. Wilson Theodore H. Eaton, Jr.

      Volume 9, No. 4, pp. 85-104, 2 figures in text

      Published May 10, 1956

      University of Kansas

      Lawrence, Kansas

      PRINTED BY

      FRED VOILAND, JR., STATE PRINTER

      TOPEKA, KANSAS

      1956

      Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas

      BY

      SYDNEY ANDERSON

      INTRODUCTION

      In the region including Wyoming and Colorado, Microtus pennsylvanicus has been divided into two subspecies: the pale M. p. insperatus (J. A. Allen) inhabits the Black Hills of the northeasternmost part of Wyoming; the dark M. p. modestus (Baird) inhabits extensive areas in both Wyoming and Colorado. Initial examination of Microtus pennsylvanicus revealed that specimens from the Big Horn Mountains of north-central Wyoming (within the range of modestus as mapped by Hall and Cockrum 1952:407), in color at least, resemble the subspecies insperatus more than they do modestus, and that specimens from southwestern Wyoming are notably dark. Durrant (1952:363) noted that specimens from Utah are dark, and Davis (1939:315) did the same for specimens from near Pocatello, Idaho. It seemed, therefore, that dark color might characterize populations of a wide geographic region and distinguish them from modestus named from southern Colorado. Also, there seemed to be a hiatus of at least 180 miles between the ranges of modestus in northern Colorado and modestus in eastern Wyoming, and an even greater distance separating populations of modestus in northern Colorado from those in western Wyoming. Microtus pennsylvanicus has not been taken in central or southeastern Wyoming despite extensive collecting there, which yielded numerous records of other kinds of Microtus (M. longicaudus, M. montanus, and M. ochrogaster). Subsequent study revealed a pattern of geographic variation within the range now ascribed to modestus which, in my opinion, can be described best by the recognition of three new subspecies.

      MATERIALS, METHODS, AND ACKNOWLEDGMENTS

      To study geographic variation in color a method was devised as follows: A single skin (KU 42407, from 1½

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