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Phenology Model Database

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English Grain Aphid

Scientific name: Macrosiphum avenae (Sitobion avenae)

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

Kieckhefer, R. W., N. C. Elliott, and D. D. Walagenbach. 1989. Effects of constant and fluctuating temperatures on developmental rates and demographic statistics of the English grain aphid (Homoptera: Aphididae). Ann. Entomol. Soc. Am. 82: 701-706.

Location of study: South Dakota (laboratory studies)

Developmental thresholds
Lower:39.2°F (4.0°C)
Upper:76.3°F (24.6°C)

Method of calculation:Double Sine
Cutoff method:Horizontal Cutoff

Degree-day accumulations required for each stage of development
Host: BarleyDD (°F)DD (°C)
Apterae generation time: 246.2136.8
Alatae generation time: 271.4150.8


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