Genetic plasticity of the arthropod pests of agricultural crops in the Philippines

Professorial Chair Lecture

San Miguel Corporation Professorial Chair Award

Place

Genetics and Molecular Biology division Institute of biological Sciences College of Arts and Sciences U.P. Los Banos, Laguna

Date

3-8-2002

Abstract

Arthropoda is the largest most diverse and successful animal phylum uniquely characterized with jointed appendages, exoskeleton, segmented body, dorsal heart and ventral nervous system Two of the arthropods, which serve as pests of major agricultural crops in the Philippines. are mites and insects These arthropod pests are usually regulated or managed through employment of various pest management tactics like use of pesticides and varietal resistance. However, these strategies became ineffective due to inherent genetic plasticity of arthropod pests. Two specific cases of genetic plasticity of mites and insect pests of agricultural crops in the Philippines are pesticide resistance and biotype development. The resistance of the red spider mite species, Tetrarynchus kanzawai Kishida. to carbaryl, methyl-parathion and dicofol are discussed. The development of the different biotypes of the brown planthopper, Nilaparvata lugens (Stal), in resistant varieties of rice is explained They are both controlled by heredity and constitute excelled examples of accelerated microevolution based on selection

Location

UPLB Main Library Special Collections Section

Call Number

PL

Pages/Collation

39 leaves

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