Valutazione dell’attività antagonista di Psyllaephagus bliteus Riek (Hym. Encyrtidae) e caratterizzazione molecolare delle popolazioni.

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Abstract

[automatically translated] The operated control Psyllaephagus bliteus Riek, against the host specific activities Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae), the psyllid from white waxy follicle, has been evaluated in Campania by monitoring the levels of infestation of Eucalyptus spp. and by comparing them with data collected before dell'Encirtide accidental dissemination occurred in Campania in 2012. Data on the level of infestation of the psyllid, expressed as the number of psyllids not parasitized by leaf, detected during 2014-2015 were compared to those detected in 2011, and then in the absence of species-specific control activities. The comparison allowed to detect a reduction in the infestation rate, attributable to antagonistic operated by P. bliteus, equal to 63%. The averages related to infestations of G. briblecombei, derived from the monitoring carried out in Campania, were compared with similar data collected in Sicily, where conversely, the antagonist was accidentally released in conjunction with the pest. P. bliteus populations, from Campania, Lazio and Sicily, have also been characterized at the molecular level. 24 samples were sequenced for the ITS2 region (accession number from KU877300 to KU877323) and 31 samples for the 28S-D2 region (accession number from KU877269 to KU877299). The data obtained have verified the possibility of using the ITS2 region as a marker for the molecular analysis on P. bliteus. The analyzes also produced two phylogenetic trees of populations of P. bliteus collected in different regions and have allowed the identification of the initial input via the parasitoid in Sicily and the subsequent moves that have characterized its spread. The experimental design is the first that focuses on the analysis of molecular species of the genus Psyllaephagus, are therefore not available data with which to compare those obtained so far. Interestingly the use of the method applied to the complex parasitic species-specific for the identification of pathways of alien insects of economic and / or environmental interest. are therefore not available data with which to compare those obtained so far. Interestingly the use of the method applied to the complex parasitic species-specific for the identification of pathways of alien insects of economic and / or environmental interest. are therefore not available data with which to compare those obtained so far. Interestingly the use of the method applied to the complex parasitic species-specific for the identification of pathways of alien insects of economic and / or environmental interest.
Original languageItalian
Pages251-251
Number of pages1
Publication statusPublished - 2016

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