2012
DOI: 10.1603/ec12077
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Interspecific Interaction Between <I>Spodoptera exigua</I> Multiple Nucleopolyhedrovirus and <I>Microplitis bicoloratus</I> (Hymenoptera: Braconidae: Microgastrina) in <I>Spodoptera exigua</I> (Lepidoptera: Noctuidae) Larvae

Abstract: Baculoviruses and parasitoids are important biological control factors of insects in integrated pest management. Microplitis bicoloratus Chen (Hymenoptera: Braconidae: Microgastrina) is a solitary endoparasitoid of beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) larvae. M. bicoloratus parasitized first to third instars of S. exigua and most effectively parasitized second instars. The survival rate of parasitoids emerging from S. exigua multiple nucleopolyhedrovirus (SeMNPV)-infected hosts de… Show more

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Cited by 12 publications
(19 citation statements)
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“…The protection mechanisms are based on the expression of defective proteins of viral origin that are able to interact with those of the pathogenic virus and thus interfere with cell entry [ 72 ], replication [ 73 ] or interfere by producing small RNAs inducing destruction of virus transcripts having highly similar sequences [ 74 , 75 ]. Since baculovirus infection of the host could be lethal for the parasitoid [ 76 ], it might be speculated that the function of some of the bracoviral genes domesticated by Lepidoptera was already to protect the parasitized larvae against baculovirus infection. This might provide an explanation for both the unusual ability to interfere with distantly related virus infections and the fact that the bracovirus genes have conserved the same structure after their integration into Lepidoptera genomes.…”
Section: Discussionmentioning
confidence: 99%
“…The protection mechanisms are based on the expression of defective proteins of viral origin that are able to interact with those of the pathogenic virus and thus interfere with cell entry [ 72 ], replication [ 73 ] or interfere by producing small RNAs inducing destruction of virus transcripts having highly similar sequences [ 74 , 75 ]. Since baculovirus infection of the host could be lethal for the parasitoid [ 76 ], it might be speculated that the function of some of the bracoviral genes domesticated by Lepidoptera was already to protect the parasitized larvae against baculovirus infection. This might provide an explanation for both the unusual ability to interfere with distantly related virus infections and the fact that the bracovirus genes have conserved the same structure after their integration into Lepidoptera genomes.…”
Section: Discussionmentioning
confidence: 99%
“…kurstaki (Btk) [ 19 , 21 , 22 , 47 , 56 ] was the most frequently assessed bacterium. Among viruses, the Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) [ 25 , 39 , 62 ] and the Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV) [ 27 , 28 ] were the most frequently tested in combination with parasitoids.…”
Section: Resultsmentioning
confidence: 99%
“…We used Citavi software (version 6.11.0.0) to import the included studies. We extracted data on (1) pest, (2) control agents, (3) crop, (4) location, (5) study design, (6) evolution of pest and biocontrol agent populations, (7) crop damage, (8) crop yield, and (9) compatibility of biocontrol agents from the 49 selected articles [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. Each combination of biocontrol agents was considered an experiment, leading to 1...…”
Section: Methodsmentioning
confidence: 99%
“…It is possible that there are other, unidentified reasons which can explain the increase in mortality of SeMNPV‐infected larvae. For example, parasitoids have a wide range of virulence factors, including polydnaviruses, venom, virus‐like particles and factors, which deactivate host immune responses (Cai et al, ). Parasitoids also affect the growth, development and metabolism of hosts (Chu et al, ).…”
Section: Discussionmentioning
confidence: 99%