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Phenology Model Database

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Sweetpotato Whitefly

Scientific name: Bemisia tabaci

Phenology models predict timing of events in an organism's development. For many organisms which cannot internally regulate their own temperature, development is dependent on temperatures to which they are exposed in the environment.

Information in this database comes from published articles. It may be used in conjunction with field monitoring and a degree-day calculator.

Note: Before using a model that was not field tested in your location, you should test the model for one or more seasons under your conditions to verify that it will work for you.

Model 1 of 1

Zalom, F.G., E.T. Natwick, and N.C. Toscano. 1985. Temperature regulation of Bemisia tabaci (Homoptera: Aleyrodidae) populations in Imperial Valley Cotton. J. Econ. Entomol. 78: 61-64.

Location of study: Imperial Valley, California

Developmental thresholds

Lower: 50F (10°C)

Upper: 90F (32.2°C)

Method of calculation: Double Sine

Cutoff method: Vertical

Degree-day accumulations required for each stage of development

Biofix: June 21

Host: Cotton DD (°F) DD (°C)

Generation time (EGG T0 ADULT) 569 316

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