POPULATION FLUCTUATION OF THE MAIN PESTS AND THEIR NATURAL ENEMIES IN A TANGÜIS COTTON FIELD AT LA MOLINA, LIMA, PERU

Cruz L.; Vergara C.; Sánchez G. · Ecologia Aplicada (2024) · DOI: 10.21704/rea.v23i1.2162

Resumen

Population fluctuations of Aphis gossypii, Chloridea virescens, Anthonomus vestitus, Dysdercus peruvianus and Pectinophora gossypiella, besides their natural enemies were studied during the entire phenological period of a Tangüis cotton crop at La Molina (Lima), using three sampling techniques: direct plant evaluation, plant shake falls and pitfall traps. A. gossypii was the most abundant pest, being more important in the vegetative development, followed by D. peruvianus and P. gossypiella, both with greater importance in the fructification stage. Predatory insects and spiders were recorded during the whole crop period, where the most frequent were, in predatory insects Hippodamia convergens, Hyalochloria denticornis and Rhinacloa forticornis, and in spiders Misumenops sp. morpho 1, Zelotes laetus and Theridion volubile. Parasitoidism was low or scarce in most of the pests, highlighting Lysiphlebus testaceipes as A. gossypii parasitoid due to its abundance in the vegetative development of the cotton field. © Departamento Académico de Biología, Universidad Nacional Agraria La Molina, Lima – Perú.

Instituciones: Universidad Nacional Agraria La Molina