Development of the predator Eocanthecona furcellata on different proportions of nucleopolyhedrovirus infected Spodoptera litura larvae and potential for predator dissemination of virus in the field

Gupta, Rakesh Kumar; Gani, Mudasir; Jasrotia, Poonam; Srivastava, K. N.

doi:10.1007/s10526-013-9515-1

Cited by 21 publications

(13 citation statements)

References 28 publications

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“…Infection by EPMs may alter the chemical cues or nutritional content of S. litura larvae, which in turn may affect the reduviid predator performance and biological control efficacy. Previously, it was reported that NPV had a detrimental effect on the development of reduviids such as R. marginatus [ 47 ], S. leucomesus [ 44 ], and another generalist predator, Eocanthecona furcellata Wolffin [ 58 ], that all feed on S. litura larvae. However, later authors also reported impaired development in S. leucomesus , but not in R. kumarii , which demonstrates the resistance capacity of this reduviid to bacteria and viruses.…”

Section: Discussionmentioning

confidence: 99%

Lethal and Sublethal Effects of Three Microbial Biocontrol Agents on Spodoptera litura and Its Natural Predator Rhynocoris kumarii

Sahayaraj

Subash

Allingham³

et al. 2018

Insects

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Entomopathogenic microbes such as Spodoptera litura nucleopolyhedrovirus (SpltNPV), Metarhizium anisopliae, and Pseudomonas fluorescens are biological agents used for the control of multiple arthropod pests. The objective of this study was to assess their effects on the biological parameters of Spodoptera litura (Lepidoptera: Noctuidae) larvae, and its natural reduviid predator Rhynocoris kumarii (Hemiptera: Reduviidae) under laboratory conditions. Results suggested that P. fluorescens reduced the food consumption index, relative growth rate, approximate digestibility, the efficiency of conversion of ingested food, and the efficiency of conversion of digested food of S. litura third instar larvae compared to prey infected with M. anisopliae and SpltNPV. Both SpltNPV and M. anisopliae caused similar mortality of S. litura life stages after 96 h of observation. To observe the effect of an infected prey diet on predator behavior, infected S. litura larvae were offered to the third, fourth, and fifth instar nymphs of R. kumarii, and their prey handling time, predation rate (number/day/predator), developmental period, and the survival rate was recorded. When the life stages of R. kumarii were offered entomopathogen-infected S. litura larvae, their predation rate was comparable to or higher than the untreated control. The juvenile predator, after feeding on P. fluorescens-infected S. litura larvae, had a significantly longer developmental period (2–4 days) compared to those fed on larvae infected with other microbial control agents. However, feeding on P. fluorescens alone did not affect the predator nymphal survival rate or the adult sex ratio. Although three entomopathogens had some degree of effect on the biological parameters of R. kumarii, the outcome of this study suggests that integration of reduviids with the tested entomopathogens are a compatible and potentially effective strategy for the management of S. litura populations. However promising, this combined strategy needs to be tested under field conditions to confirm the laboratory findings.

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Section: Discussionmentioning

confidence: 99%

Lethal and Sublethal Effects of Three Microbial Biocontrol Agents on Spodoptera litura and Its Natural Predator Rhynocoris kumarii

Sahayaraj

Subash

Allingham³

et al. 2018

Insects

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“…For feces collection, predators were used only once throughout the experiment. Feces were titrated in 100 µL of sterile water and each suspension was assayed for viable virus by feeding the virus to each of fifty second instar host larvae using the diet plug system ( Gupta et al 2013 ). Circular discs measuring 1.5 cm in diameter were cut from the diet and contaminated with serial concentrations of SpltMNPV.…”

Section: Methodsmentioning

confidence: 99%

A comparison of infectivity between polyhedra of the Spodoptera litura multiple nucleopolyhedrovirus before and after passage through the gut of the stink bug, Eocanthecona furcellata

Gupta

Gani

Jasrotia

et al. 2014

Journal of Insect Science

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Infectivity of polyhedra of Spodoptera litura multiple nucleopolyhedrovirus before and after passage through the gut of the predatory stink bug, Eocanthecona furcellata Wolff (Hemiptera: Pentatomidae) was compared through field bioassay studies. Three sets of E. furcellata were used for bioassays and these were allowed to feed on a single meal of five third instar Oriental leaf worm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae), that were infected with polyhedra before passage, after passage, and healthy (control) larvae 1 day prior to the trial. The predators were subsequently released on cabbage plants that were infested with 100 healthy S. litura larvae. The median lethal dose (LD 50 ) and survival time (ST 50 ) values before and after passage through the gut were not significantly different. Additional mortality due to virus infection increased 13– 17% before and after treatments but within these treatments the mortality did not vary significantly. It was concluded that E. furcellata disseminated the virus through their feces into the ecosystem and infectivity of the SpltMNPV was not altered after passage through the gut of the predator. Abbreviations: NPV , nucleopolyhedrovirus; SpltMNPV , Spodoptera litura multiple nucleopolyhedrovirus; PIBs , polyhedral inclusion

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“…As presented by Gupta et al (2013), the developmental period, survival rate, sex ratio, and egg incubation period of the predator Eocanthecona furcellata Wolff. (Hem.…”

Section: A Interactions Between Baculoviruses and Predators Laboratomentioning

confidence: 99%

Interactions between baculoviruses and entomophagous insects

Abbas¹

2020

Egypt J Biol Pest Control

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Some laboratory studies revealed that predators can readily attack and consume virus-infected prey with no detrimental effects on their biological parameters. Most tested predacious species did not discriminate between healthy and virus-infected prey. In addition, such predators were found to excrete detectable amounts of polyhedral inclusion bodies for few days that might infect healthy prey. Field studies demonstrated that the population densities and dispersal of the predators were not affected in fields sprayed with entomopathogenic virus formulations. Some laboratory studies stated that egg and larval parasitoids did not discriminate between healthy and virus surface-contaminated or virus-infected hosts. However, some parasitoids did not lay or laid few eggs in virus-infected hosts. Parasitoid adults that laid eggs in virus-infected host larvae could transmit the virus to healthy hosts through the ovipositor. Also, adult parasitoids emerged from virus-infected hosts transmitted the virus to healthy hosts whereas other parasitoids did not transmit the virus.

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Development of the predator Eocanthecona furcellata on different proportions of nucleopolyhedrovirus infected Spodoptera litura larvae and potential for predator dissemination of virus in the field

Cited by 21 publications

References 28 publications

Lethal and Sublethal Effects of Three Microbial Biocontrol Agents on Spodoptera litura and Its Natural Predator Rhynocoris kumarii

Lethal and Sublethal Effects of Three Microbial Biocontrol Agents on Spodoptera litura and Its Natural Predator Rhynocoris kumarii

A comparison of infectivity between polyhedra of the Spodoptera litura multiple nucleopolyhedrovirus before and after passage through the gut of the stink bug, Eocanthecona furcellata

Interactions between baculoviruses and entomophagous insects

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