Research and IPM
Phenology Model Database
Blue Alfalfa Aphid
Scientific name: Acyrthosiphon kondoi
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
Summers, C.G., R.L. Coviello, and A.P. Gutierrez. 1984.
Influence of constant temperatures on the development and reproduction of
Acyrthosiphon kondoi (Homoptera: Aphididae). Environ. Entomol. 13: 236-242.
Location of study: California (laboratory studies)
Developmental thresholds
| Lower | 38.2°F |
(3.45°C) |
|---|
| Upper: | 80.8°F |
(27.1°C) |
|---|
| Method of calculation: | UC IPM recommends single sine |
|---|
| Cutoff method: | Intermediate |
|---|
Degree-day accumulations required for each stage of development
| Host: Alfalfa | DD (°F) | DD (°C) |
|---|
| | | |
| Mean total: |
| Generation time (birth to prepartum adult) | 260.87 | 144.93 |
| | | |
| Apterous only: |
| Generation time (birth to prepartum adult) : | 253.53 | 140.85 |
| (Prepartum aptera): |
30.31 | 16.84 |
| Generation time (birth to birth): |
283.84 | 157.69 |
| | | |
| Alate only: |
| Generation time (birth to prepartum adult) : | 276.93 | 153.85 |
| (Prepartum alate): |
51.73 | 28.74 |
| Generation time (birth to birth): |
328.66 | 182.59 |
|
