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Evaluation of two native entomopathogenic nematodes against Odontotermes obesus (Rambur) (Isoptera: Termitidae) and Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae)
- Source :
- Egyptian Journal of Biological Pest Control, Vol 31, Iss 1, Pp 1-8 (2021)
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Background Entomopathogenic nematodes (EPNs) are one of the widely studied biological control agents. The present study was conducted to evaluate the efficacy of two EPNs species, Heterorhabditis bacteriophora (Poinar) (Rhabditida: Heterorhabditidae) and Steinernema aciari (Qui, Yan, Zhou, Nguyen and Pang) (Rhabditida: Steinernematidae), isolated locally from soils of Majuli river island, Assam, India against two important subterrenean pests; Odontotermes obesus (Rambur) (Isoptera: Termitidae) and Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) under laboratory conditions. Results In case of O. obesus, mortality percent was recorded by H. bacteriophora after 72 h. at 300 IJs/termite and by S. aciari at 250 and 300 IJs/termite after 96 h. The lowest LD50 and LT50 values obtained for H. bacteriophora were 13.054 IJs/termite and 26.639 h., respectively, while those of S. aciari were 42.040 IJs/termite and 31.761 h., respectively. With respect to A. ipsilon, H. bacteriophora registered a highest mortality rate at 300 IJs/larvae after 144 h. S. aciari showed 100 percent mortality at 300 IJs/larva after 168 h. The lowest values of LD50 and LT50 for H. bacteriophora were 35.711 IJs/larva and 83.050 h., respectively. The lowest values of LD50 and LT50 for S. aciari were 71.192 IJs/larvae and 97.921 h., respectively. Overall, H. bacteriophora displayed more virulence toward O. obesus and A. ipsilon than S. aciari. Conclusion Both native EPNs were found effective against O. obesus and A. ipsilon. However, H. bacteriophora was more virulent toward O. obesus and A. ipsilon than S. aciari under the laboratory conditions.
- Subjects :
- Veterinary medicine
Larva
Ecology
biology
Heterorhabditis bacteriophora
Entomopathogenic nematodes
Biological pest control
Agriculture
Agrotis ipsilon
Plant Science
biology.organism_classification
Lepidoptera genitalia
Termitidae
Steinernema aciari
Biological control
Insect Science
Odontotermes obesus
Noctuidae
Agronomy and Crop Science
Rhabditida
Subjects
Details
- ISSN :
- 25369342
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- Egyptian Journal of Biological Pest Control
- Accession number :
- edsair.doi.dedup.....fddbfacd29a5dda9051a45c77a5b06a8