Prenatal Survival and Loss in Some Cricetid Rodents

Abstract
In spite of the fact that during recent years much stress has been placed upon the dynamic aspects of mammalian populations, very little is known about prenatal survival and loss. Detailed studies of prenatal mortality in North American wild mammals appear to have been limited to the brush rabbit (Mossman, 1955), mule deer (Robinette et al., 1955) and meadow vole (Hamilton, 1941). The extensive work on the wild rabbit in England has been well reviewed by Brambell (1948). Other Old World studies include work on the brown rat (Perry, 1945), common shrew (Brambell, 1935), bank vole (Brambell and Rowlands, 1936), multi-mammate mouse (Brambell and Davis, 1941), and gray squirrel (Deanesly and Parkes, 1933). The estimates of intrauterine loss in these studies, depending on what information is available,...

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