Abstract

An analysis of the seasonal cycle of growth and reproduction of the field vole in southern Bavaria in the years 1972, 74 and 75 showed a turnover of development in midsummer indicated by reduced weight increase, restricted reproduction and low fertility. Highest weight increase of 436 marked and recaptured specimens in the field was observed during May and June with 269 mg (335 mg males, 188 mg females) per day and individual (Abb. 1). During August and September a mean weight decrease of −82 mg per animal was measured. The daily weight increase per individual reached 67 mg (74 mg males, 54 mg females) in the average of all observed years.

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