Volume 27, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



In order to understand adequately the dynamics of vector-borne disease, one must understand how and why vector populations change over time. We describe a long-term, cooperative study of seasonal fluctuation in populations of the mosquito in Puerto Rico. During each month of the first 3 years of the project, was found breeding in all five communities studied. Mosquito density was positively correlated with rainfall, the relationship being more marked in the dry, south-coastal part of the island. Discarded tires and animal watering pans were the two most common larval breeding sites. In general, houses in Puerto Rico harbor more potential breeding sites than those in other tropical locations, probably because Puerto Rico is relatively more affluent.


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