Pathogenicity of heterorhabditis indica Poinar et al. PBCB strain on mango fruitfly, bactrocera philippinensis Drew & Hancock (Diptera: Tephritidae)
Issue Date
10-2017
Abstract
Heterorhabditis indica Poinar et al. is one of the most common entomopathogenic nematodes used to manage soil-borne insect pests. In this study, the pathogenicity of the Philippine H. indica PBCB strain was evaluated in the laboratory at different infective juvenile (IJ) concentrations (0, 4, 8, 16, 32, 64, 128) on mango fruitfly, Bactrocera philippinensis Drew & Hancock. Results showed that at 128 IJs, H. indica could cause 82.22% and 88.89% mortality after 24 and 48 hours post infection (HPI), respectively. There is a strong positive linear between H. indica concentration and B. philippinensis mortality (ƿ=0.83 (24-hrs) and ƿ=0.78 (48-hrs)). On the other hand, LC50 was 52.68 IJs and 32.01 IJs at 24 and 48-HPI, respectively. Some treated larva exhibited pink-red coloration, a typical sign of Heterhabditis infection. Also, there is a strong negative linear association between H. indica concentration and B. philippinensis emergence (ƿ= -0.77). This study proved that H. indica is indeed a promising biological control agent against B. phillipinensis.
Source or Periodical Title
The Philippine Entomologist
ISSN
0048-3753
Volume
31
Issue
2
Page
169
Document Type
Article
College
College of Agriculture and Food Science (CAFS)
Frequency
semi-annually
Language
English
Recommended Citation
De Luna, Jose Emmanuel I.; Latina, Romnick A.; and Caoili, Barbara L., "Pathogenicity of heterorhabditis indica Poinar et al. PBCB strain on mango fruitfly, bactrocera philippinensis Drew & Hancock (Diptera: Tephritidae)" (2017). Journal Article. 4124.
https://www.ukdr.uplb.edu.ph/journal-articles/4124
En – AGROVOC descriptors
MANGOES; BACTROCERA; TEPHRITIDAE; HETERORHABDITIS; FRUIT DAMAGING INSECTS; PEST OF PLANTS; PEST INSECTS; ENTOMOPHILIC NEMATODES; PATHOGENICITY; BIOLOGICAL CONTROL AGENTS