Engytatus varians as agent for dispersal of Spodoptera exigua nucleopolyhedrovirus

Martínez, Amós; Zamudio-López, Samara; Guzmán-Pedraza, Alejandro Oxalis; Morales-Alonso, Sinue Isabel; Valle, Javier; Ramos-Ortiz, Selene; Zamora-Avilés, Norma; Figueroa, José Isaac; Pineda, Samuel

doi:10.1007/s10340-022-01549-6

Cited by 1 publication

(2 citation statements)

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“…After the release of OBs from infected corpses to the environment, different abiotic and biotic factors can contribute to the dispersion of the virus, promoting the access to new hosts and favoring its persistence 18,19 . Amongst biotic factors, several studies reported that predatory arthropods can disperse the viruses by excretion of viable OBs after preying on baculovirus‐infected larvae of different lepidopteran pests 16,19–23 . Unfortunately, the relevance of predatory arthropods as biotic agents in the dissemination of baculoviruses under field conditions depends on several factors, such as the coincidence of infected prey and predators, the acceptance of infected prey as food, or the interactive behavior of predator and prey in relation to virus acquisition 24,25 .…”

Section: Introductionmentioning

confidence: 99%

“…18,19 Amongst biotic factors, several studies reported that predatory arthropods can disperse the viruses by excretion of viable OBs after preying on baculovirus-infected larvae of different lepidopteran pests. 16,[19][20][21][22][23] Unfortunately, the relevance of predatory arthropods as biotic agents in the dissemination of baculoviruses under field conditions depends on several factors, such as the coincidence of infected prey and predators, the acceptance of infected prey as food, or the interactive behavior of predator and prey in relation to virus acquisition. 24,25 In addition, the interaction necessary with the infected prey/host to acquire the virus requires a certain pest level in the crop.…”

Section: Introductionmentioning

confidence: 99%

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A novel use of Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) as inoculative agent of baculoviruses

Gutiérrez-Cárdenas

Adán

Medina

et al. 2023

Pest Management Science

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BackgroundAlphabaculoviruses are Lepidoptera‐specific virulent pathogens that infect numerous pests, including the Spodoptera complex. Due to their low environmental persistence, the traditional use of Alphabaculoviruses as bioinsecticides consist in high‐rate spray applications with repeated treatments. Several abiotic and biotic factors can foster its dispersion, promoting their persistence in the agroecosystem. Amongst biotic factors, predatory arthropods can disperse the viruses by excretion after preying on infected individuals. Therefore, this study focused on promoting predator's ingestion of nucleopolyhedrovirus (NPV)‐treated diets, and the later exposition of the insect host to leaf surfaces contaminated with predator excreta. The virus–host–predator system studied was Spodoptera littoralis nucleopolyhedrovirus (SpliNPV), Spodoptera littoralis (Boisduval) and Nesidiocoris tenuis (Reuter). The infective potential of N. tenuis feces and the retention time of SpliNPV were assessed under laboratory conditions after feeding on treated diets (sucrose solution and Ephestia kuehniella eggs).ResultsMortality of S. littoralis larvae was lower via N. tenuis excretion than in positive control (spray application) in the first infection cycle, together with a delay in host death. In the second infection cycle, both SpliNPV‐treated diets triggered 100% mortality. Both diets allowed the transmission of SpliNPV, with a faster excretion via sucrose solution compared to E. kuehniella eggs. SpliNPV remained in N. tenuis digestive tract and was viable after excretion at least for 9 days for both diets.ConclusionsThis study demonstrated the potential of the predator N. tenuis as inoculative agent of baculoviruses, representing a new alternative that, along with inundative applications, might contribute to improve pest management strategies. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%