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Demography of black-tailed prairie dog populations reoccupying sites treated with rodenticideAuthor(s): R. P. Cincotta; Daniel W. Uresk; R. M. Hansen
Source: Great Basin Naturalist. 47(2): 339-343
Publication Series: Miscellaneous Publication
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DescriptionA rodenticide, zinc phosphide, was applied to remove black-tailed prairie dogs (Cynomys ludovicianus) from 6 haofa prairie dog colony in southwestern South Dakota. Another adjacent 6 ha was left untreated. The removal experiment was repeated two consecutive years. Contingency table analysis showed that the resultant population was not homogeneous; age classes by sex of the immigrant and resident subpopulations were different (P < 0.01). The ratio of adult females to yearling females was greater among immigrants than among residents (P < 0.03). Female immigrants did not produce young in the treated zone during the year of their arrival. Fewer of these females displayed distended nipples than expected (P < 0.01), ,indicating that these immigrants did not reproduce during the reproductive season immediately preceding dispersal and suggesting that failure to reproduce may have stimulated dispersal.
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CitationCincotta, R. P.; Uresk, Daniel W.; Hansen, R. M. 1987. Demography of black-tailed prairie dog populations reoccupying sites treated with rodenticide. Great Basin Naturalist. 47(2): 339-343
KeywordsCynomys ludovicianus, prairies, rodenticides, zinc phosphide, South Dakota
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