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[Pg 129]



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University of Kansas Publications

Museum of Natural History

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Volume 10, No. 4, pp. 129-161, 8 figs. in text,6 tables

bar  December 19, 1957  bar





Aspects of Reproduction and Development
in the Prairie Vole (Microtus ochrogaster)




BY


HENRY S. FITCH












University of Kansas
Lawrence
1957



[Pg 130]

University of Kansas Publications, Museum of Natural History

Editors: E. Raymond Hall, Chairman, Henry S. Fitch,
Harrison B. Tordoff




Volume 10, No. 4, pp. 129-161, 8 figs. in text,6 tables

Published December 19, 1957







University of Kansas
Lawrence, Kansas





PRINTED IN
THE STATE PRINTING PLANT
TOPEKA, KANSAS
1957
Look for the Union Label
29-5936




[Pg 131]

Aspects of Reproduction and Developmentin the Prairie Vole (Microtus ochrogaster)

BY

HENRY S. FITCH


INTRODUCTION

The prairie vole is by far the most abundant mammal on theUniversity of Kansas Natural History Reservation and on grasslandareas throughout northeastern Kansas. This vole therefore affectsthe vegetation, perhaps more than any other native vertebrate, andit is an important food source for most of the vertebrate predators.Since the Reservation was established, in 1948, more data have beenaccumulated concerning this vole than for any other species ofanimal there. From February, 1950, to February, 1954, a grid oflive-traps at 50-foot intervals was set for several days each monthin a three-acre field inhabited by voles, and the population ofmarked individuals was studied throughout the four-year period. FromNov

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