UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

SKIP navigation

 

Research and IPM

Phenology Model Database

Western Cherry Fruit Fly

Scientific name: Rhagoletis indifferens

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 5

AliNiazee, M. T. 1976. Thermal unit requirements for determining adult emergence of the Western cherry fruit fly (Diptera: Tephritidae) in the Willamette Valley of Oregon. Environ. Ent. 5: 397-402.

Location of study: Albany, Oregon (field studies)

Developmental threshold
Lower:41.0°F(5.0°C)

Method of calculation: Max-min method (UC IPM recommends Single Sine)

Degree-day accumulations required for each stage of development

Start date: March 1

 DD (°F)DD (°C)
Air Temperatures
First adult spring emergence:842.4468.0
Peak adult spring emergence:1142.1634.5
Last adult spring emergence:1755.0975.0
Soil Temperatures at 5 centimeters
First adult spring emergence:1296.0720.0
Peak adult spring emergence:1710.0950.0
Last adult spring emergence:2034.01130.0
Soil Temperatures at 10 centimeters
First adult spring emergence:1182.6657.0
Peak adult spring emergence:1571.4873.0
Last adult spring emergence:1900.81056.0


Model 2 of 5

AliNiazee, M. T. 1979. A computerized phenology model for predicting biological events of Rhagoletis indifferens (Diptera: Tephritidae). Can. Ent. 111: 1101-1109.

Location of study: Albany, Oregon (field studies)

Developmental threshold
Lower:41.0°F(5.0°C)

Method of calculation: Max-min method (UC IPM recommends Single Sine)

Degree-day accumulations required for each stage of development

Start date: March 1

 DD (°F)DD (°C)
First adult spring emergence:831.6462.0
Beginning of egg-laying: 973.8541.0
Egg hatch:1069.2594.0
50% adult spring emergence:1135.8631.0
Peak Egg-laying: 1233.0685.0
Pupation: 1431.0795.0


Model 3 of 5

Van Kirk, J. R., AliNiazee., and M. T. 1981. Determining low-temperature threshold for pupal development of the Western cherry fruit fly for use in phenology models. Environ. Ent. 10: 968-971.

Location of study: Albany, Oregon (field studies)

Developmental threshold
Lower:47.0°F(8.3°C) (soil temperatures at 2 inches (5.1cm))

Method of calculation: Max-min method (UC IPM recommends Single Sine)

Degree-day accumulations required for each stage of development

Start date: March 1

 DD (°F)DD (°C)
First adult spring emergence: 104.057.8
50% adult spring emergence:198.0110.0


Model 4 of 5

Jones, V. P., D. G. Alston, J. F. Brunner, D. W. Davis, and M. D. Shelton. 1991. Phenology of the Western cherry fruit fly (Diptera: Tephritidae) in Utah and Washington. Ann. Entomol. Soc. Am. 84: 488-492.

Location of study: Utah and Washington (field studies)

Developmental thresholds
Lower:41°F(5°C)
Upper:none 

Method of calculation: Single Sine

Degree-day accumulations required for each stage of development
Host: Sweet and sour cherriesDD (°F)DD (°C)
Flies first detected (Utah):1031573
Flies first detected (Washington):1066592


Model 5 of 5

Stark, S. B., and M. T. AliNiazee. 1982. Model of Postdiapause development in the Western Cherry Fruit Fly. Environ. Ent. 11: 471-474.

Location of study: Albany, Oregon (laboratory studies)

Developmental thresholds
Lower:48.2°F( 9.0°C)
Upper:90.0°F(32.2°C)

Method of calculation:1/(development rate) (UC IPM recommends Single Sine)
Cutoff method:Vertical

Degree-day accumulations required for each stage of development

Start date: March 1

 DD (°F)DD (°C)
Mean adult spring emergence:860.8478.2


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PHENOLOGY/ma-w_cherry_fruit_fly.html revised: July 10, 2014. Contact webmaster.