UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

SKIP navigation

 

Research and IPM

Phenology Model Database

="Gypsy

Gypsy Moth

Scientific name: Lymantria dispar

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 3

Johnson, P. C., D. P. Mason, S. L. Radke, and K. T. Tracewski. 1983. Gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), egg eclosion: degree-day accumulations. Environ. Entomol. 12: 929-932.

Location of study: New Hampshire (laboratory studies)

Developmental threshold
Lower:37.4°F(3.0°C)

Method of calculation:Double Sine
Cutoff method:Horizontal Cutoff

Degree-day accumulations required for each stage of development

Start date: January 1
Host: Mixed HardwoodDD (°F)DD (°C)
Egg mass eclosion: 507.6282.0


Model 2 of 3

Carter, M. R., F. W. Ravlin, and M. L. McManus. 1992. Effect of defoliation on gypsy moth phenology and capture of male moths in pheromone-baited traps. Environ. Entomol. 21: 1308-1318.

Location of study: Virginia (field studies)

Developmental thresholds
Lower:45.7°F(7.6°C)
Upper:105.8°F(41.0°C)

Method of calculation:Double Sine
Cutoff method:Horizontal Cutoff

Degree-day accumulations required for each stage of development
Host: Oak speciesDD (°F)DD (°C)
egg hatch to first pupa:815-1186453-659
50% pupation:925-1186514-659


Model 3 of 3

Russo, J. M., A. M. Liebhold, and J. G. W. Kelley. 1993. Mesoscale weather data as input to gypsy moth (Lepidoptera: Lymantriidae) phenology model. J. Econ. Entomol. 86: 838-844.

Location of study: Pennsylvania and West Virginia

Developmental thresholds
Lower:37.4°F(3.0°C)
Upper:104.0°F(40.0°C)

Method of calculation:Double Sine
Cutoff method:Horizontal Cutoff

Degree-day accumulations required for each stage of development

Start date: January 1
Host: HardwoodsDD (°F)DD (°C)
Egg mass ecolsion:570.6317.0


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-gypsy_moth.html revised: December 17, 2003. Contact webmaster.