Research and IPM

Phenology Model Database

Liriomyza trifolii

Scientific name: Liriomyza trifolii (An agromyzid leafminer)

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.

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

Leibee, G. L. 1984. Influence of temperature on development and fecundity of Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) on celery. Environ. Entomol. 13: 497-501.

Location of study: Sanford, Florida (laboratory studies)

Developmental threshold

Lower:	49.5°F	( 9.7°C)
Upper:	95.0°F	(35.0°C)

Method of calculation:	not specified (UC IPM recommends Single Sine)
Cutoff method:	not specified (UC IPM recommends Vertical)

Degree-day accumulations required for each stage of development

Host: Celery	DD (°F)	DD (°C)
Eggs:	81.9	45.5
Larvae:	233.6	129.8
Pupae:	249.1	138.4
Generation time (egg to adult):	564.7	313.7

Model 2 of 2

Miller, G. W., and M. B. Isger. 1985. Effects of temperature on the development of Liriomyza trifolii (Burgess) (Diptera: Agromyzidae). Bull. Ent. Res. 75: 321-328.

Location of study: Harpenden, United Kingdom (laboratory studies)

Developmental threshold

Lower:

51.0°F

(10.6°C)

Method of calculation: not specified (UC IPM recommends Single Sine)

Degree-day accumulations required for each stage of development

Host: Chrysanthemums	DD (°F)	DD (°C)
Eggs + larvae:	252.0	140.0
Pupae:	255.1	141.7
Generation time (egg to adult):	507.1	281.7