Sensitivity of cotesia plutellae and diadegma semiclausum, parasitoids of diamondback moth, plutella xylostella (L.) to several insecticides

Creator

• J. B. Obra, University of the Philippines Los Banos
• B. J. Morallo-Rejesus, University of the Philippines Los Banos

Issue Date

4-1997

Abstract

The sensitivity of laboratory reared Cotesia plutellae (Taiwan and indigenous strains) and Diadegma semiclausum adults to eight insecticides was evaluated by residual fil method.

Based on the LC₅₀ the order of decreasing toxicity for Cotesia Taiwan strain was: metamidophos > cartap = malathion > deltamethrin > fenvalerate > teflubenzuron > carbaryl > Btk while for indigenous Cotesia was: metamidophos > malathion > cartap > deltamethrin > fenvalerate > carbaryl teflubenzuron > Btk. The indigenous strain was six times more tolerant or less sensitive to fenvalerate (6x), deltamethrin (5x) and carbaryl (4.5 x) than the indigenous strain.

Based on the LC₅₀ the order of decreasing toxicity of different insecticides to D. semiclausum was: metamidophos > cartap = malathion > fenvalerate > carbaryl > deltamethrin > teflubenzuron > Btk.. Diadegma was more sensitive to carbaryl, teflubenzuron, fenvalerate and Btk than Cotesia.

Source or Periodical Title

Philippine Entomologist

ISSN

0048-3753

Volume

11

Issue

1

Page

49-56

Document Type

Article

Frequency

semi-annually

Physical Description

tables; graphs

Language

English

Recommended Citation

Obra, J. B. and Morallo-Rejesus, B. J., "Sensitivity of cotesia plutellae and diadegma semiclausum, parasitoids of diamondback moth, plutella xylostella (L.) to several insecticides" (1997). Journal Article. 6461.
https://www.ukdr.uplb.edu.ph/journal-articles/6461

En – AGROVOC descriptors

COTESIA PLUTELLAE; COTESIA; DIADEGMA SEMICLAUSUM; DIADEGMA; PLUTELLA XYLOSTELLA; PARASITOIDS; INSECTICIDES