
The SciencesJune 1, 1974
Population Cycles in Rodents
Field populations of many small rodents rise and fall in a cycle lasting three to four years. Associated with these fluctuations is a periodic change in the genetic constitution of the population

Population Cycles in Rodents
Field populations of many small rodents rise and fall in a cycle lasting three to four years. Associated with these fluctuations is a periodic change in the genetic constitution of the population