Fruit predation submodel: Heliothis larvae feeding upon cotton fruiting structures

Wilson, L; Gutierrez, A

Fruit predation submodel: Heliothis larvae feeding upon cotton fruiting structures

Authors

L. T. Wilson
A. P. Gutierrez

Authors Affiliations

L. T. Wilson was formerly Graduate Student, Department of Entomology, Davis, is employed at Plant Industry, CSIRO, Narrabri, N.S.W., Australia, 2390; A. P. Gutierrez was Entomologist, Division of Biological Control Department of Entomological Sciences, Berkeley.

Publication Information

Hilgardia 48(2):24-36. DOI:10.3733/hilg.v48n02p013. February 1980.

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Abstract

Field and laboratory data on the numbers and age distribution of two varieties of cotton fruits, the association of various-age bollworm larvae (Heliothis zea (Boddie)) and various age fruit, as well as the attack rates of the larvae on the fruits were used to develop a submodel describing predation of bollworm larvae on cotton fruits. The submodel will be used in the coupling of bollworm- and cotton-plant population models. This model is an important step in the development of dynamic economic threshold levels for bollworm in cotton.

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