Predatory efficiency of the earwig (Euborellia annulata) against major insect pests of different crops

Issue Date

10-2012

Abstract

Determination of the predatory efficiency of the earwig (E. annulata) under laboratory condition was carried out at the Central Bicol State University of Agriculture from December 2011 to February 2012. Data collected were analyzed using CRD and DMRT. No significant differences were observed among earwigs fed with varying numbers of taro planthoppers, green leafhopper (GLH), brown planthopper (BPH), mango planthopper (PH), locust, rice bug. The percentage of prey consumed by earwigs were: taro planthopper - 86.67-100%, green leafhopper - 86.67-96.67%, planthoppers and mango planthoppers - 80-83.33%, brown planthoppers- 73.33-86.67%, locust-43.33-83.33%, rice bug-10-13.33%. Significant differences in percentage consumption by earwigs were observed with varying numbers of armyworm, cutworm and short-horned grasshoppers. Highest consumption was for cutworm (56.67-73.33%) followed by armyworm (50-90%), short horned-grasshopper (10-33.33%). More short-horned grasshoppers and cutworms were eaten when given 5 and 7 insects while more armyworm was eaten introduced with 7insects followed by 10 and 5 insects.

Source or Periodical Title

Philippine Entomologist

ISSN

0048-3753

Volume

26

Issue

2

Page

197

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

DERMAPTERA; INSECTA; PREDATORY INSECTS; PREDATORS; PREDATION; PLANT PESTS

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