Geography of photoperiodic response in diapausing mosquito.

Abstract

IN temperate latitudes, many arthropods rely on photoperiod to cue their seasonal development. Although the relationship between critical photoperiod and latitude is well illustrated, that between critical photoperiod and altitude remains obscure1,2. I wish to consider photoperiodic control of dormancy in the pitcher-plant mosquito, Wyeomyia smithii, and quantify the relative effects of altitude and latitude on the photoperiodic response of an organism.