Definitions

Insect growth: As temperature decreases, days required to complete development increases.

A biofix is a significant biological event, such as the date of the first capture of an adult in a trap or a sustained moth capture in a trap. For example, the first or peak capture of insects on a pheromone trap.

Minimum or lower developmental threshold is the temperature below which insect development is negligible. The lower threshold differs among insect species. It is used as a base for calculating degree days.

Maximum or upper developmental threshold is the temperature at which insect growth stops. Upper developmental thresholds also vary among insects.

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