UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

SKIP navigation

 

Research and IPM

Phenology Model Database

="Oriental

Oriental Fruit Moth

Scientific name: Grapholita molesta

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 2

Croft, B. A., M. F. Michels, and R. E. Rice. 1980. Validation of a PETE timing model for the oriental fruit moth in Michigan and central California (Lepidoptera: Olethreutidae). Great Lakes Entomol. 13: 211-217.

Location of study: Parlier, California (field studies)

Developmental threshold
Lower:45.0°F( 7.2°C)
Upper:90.0°F(32.2°C)

Method of calculation:Single Sine
Cutoff method:Horizontal

Degree-day accumulations required for each stage of development

Start date: January 1

Host: PeachesDD (°F)DD (°C)
First moth catch:227.0+126.1+
Biofix: First moth catchDD (°F)DD (°C)
Pre-egglaying adults:50.027.8
Eggs:143.079.4
Larvae:387.0215.0
Pupae:383.0212.8
Generation time (egg to egg):963.0535.0


Model 2 of 2

Rice, R. E., C. V. Weakley, and R. A. Jones. 1984. Using degree-days to determine optimum spray timing for the oriental fruit moth (Lepidoptera: Tortricidae). J. Econ. Entomol. 77: 698-700.

SEE ALSO: Weakley, C. V., F. G. Zalom, and R. E. Rice. 1984. Monitoring oriental fruit moth development with degree-days. U. C. Div. Agr. Sci. Publ. #7157

UC IPM Pest Management Guidelines: Peach and Nectarine, UC DANR Publication 3339

Location of study: Parlier and Yuba City, California (field studies)

Developmental threshold
Lower:45.0°F( 7.2°C)
Upper:90.0°F(32.2°C)

Method of calculation:Single Sine
Cutoff method:Horizontal

Degree-day accumulations required for each stage of development
Host: Peaches  
Biofix: First male moth trappedDD (°F)DD (°C)
Pre-egglaying adults + Eggs:200.0111.1
Larvae:387.0215.0
Pupae:378.0210.0
Generation time (adult to adult):965.0536.1
Biofix: Start of second flight (usually early May) 
Time to treat:500.0 - 600.0278.0 - 333.3


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2003 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-oriental_fruit_moth.html revised: December 17, 2003. Contact webmaster.