How does rainfall impact mosquito breeding sites?

Rain can create new stagnant water sources, which serve as ideal breeding sites for mosquitoes. When it rains, excess water can accumulate in areas such as puddles, containers, ditches, and low-lying regions that do not drain properly. These stagnant water sources provide the necessary environment for mosquitoes to lay their eggs. Female mosquitoes are particularly adept at identifying such locations when searching for breeding sites. Consequently, increased rainfall can effectively lead to a rise in mosquito populations as these new stagnant areas develop.

In contrast, rainfall does not inherently decrease breeding sites, and while heavy rainfall may influence mosquito populations, even light rain can contribute to the formation of stagnant water. Therefore, the statement that rain can create new stagnant water sources accurately reflects the relationship between rainfall and mosquito breeding conditions.