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Document Type

Research

Abstract

Studies of 399 cottontails (Sylvilagus floridanus mearnsii) taken during the winter and spring of 1958 through 1961 have established the early portion of the breeding season for the species in Iowa. Males attained breeding condition starting in February. Pregnant females occurred late in February. Most females became pregnant for the first time in March. All females examined after April 1 were pregnant. Differences in commencement of the breeding season from one year to another were noted. A statistically significant difference in average size of first and second embryonic litters was noted. Litters from northern Iowa averaged larger than those from southern Iowa. This difference was statistically significant at the 0.20 level of confidence.

Publication Date

1962

Journal Title

Proceedings of the Iowa Academy of Science

Volume

69

Issue

1

First Page

244

Last Page

252

Copyright

© Copyright 1962 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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