1,721,028 research outputs found
Re-examination of specimens of three species of Kampimodromus Nesbitt (Acari: Phytoseiidae) from north-eastern Italy, with first report on K. corylosus Kolodochka in Italy
No full textSpecimens of phytoseiid previously identified as Kampimodromus aberrans (Oudemans), Kampimodromus ericinus Ragusa di Chiara and Tsolakis and Kampimodromus langeiWainstein and Arutunjan from north-eastern Italy were re-examined, with the use of morphometry. For each taxon, adult females from different collections were compared with literature information on female representatives of eight Kampimodromus species. We confirmed the identity of specimens previously identified as K. aberrans and K. langei. Specimens of K. langei differed from the holotype of Kampimodromus coryli Meshkov mainly by the absence of the gd5 dorsal idiosomal solenostomes. Specimens previously identified as K. ericinus were determined to be Kampimodromus corylosus Kolodochka, based on the length of certain dorsal setae. The largest morphometric setal variation was observed in K. aberrans; females bearing shorter setae were most similar to the topotype.Within the series of females of K. langei that were studied, those bearing longer setae were most similar to the holotype of the species. This is the first report on specimens of K. corylosus, collected from hazelnut, in Italy
Effects of plant protection products on Kampimodromus aberrans (Oudemans). the dietary effect of airborne pollen
No full text
Investigation on voltinism of Neodryinus typhlocybae (Ashmead) (Hymenoptera Dryinidae) in natural context.
No full textEvoluzione dei danni delle tignole dell’uva, Lobesia botrana (Den. e Schiff.) ed Eupoecilia ambiguella (Hb.), nell’Italia nord orientale e lotta insetticida
No full textConsiderazioni filogenetiche e biogeografiche su “Candidatus Erwinia dacicola” e prospettive per l’allevamento di Bactrocera oleae (Rossi).
Full text linkThe presence of a hereditary symbiosis in Bactrocera oleae was described by Petri (1909), which highlighted the presence of an
oesophageal bulb that harbours bacteria. Within this organ, bacteria continuously multiply, forming masses that are discharged into
the midgut.
In 2005 this symbiotic bacterium was genetically characterized and its phylogenetic status was investigated. Attempts at
cultivation ex situ of the symbiont were not productive, leading to the choice of unculturable status definition. The coevolved
bacterium was described as a novel taxon within the family Enterobacteriaceae as ‘Candidatus Erwinia dacicola”. Recently, an
extended study showed the presence of three different haplotypes of Ca. Erwinia dacicola with a geographical distribution that
appeared not to be random. Moreover, the extension of the studies to the Tephritidae family, showed the presence of specific
bacteria in other species.
In the mass-rearing of the olive fly Ca. Erwinia dacicola is particularly important. The first mass-rearing of B. oleae on artificial
diet was developed in the 60s but it is reported that the symbiont (considered P. savastanoi) was replaced by acidophilus bacteria. In
the B. oleae rearing, the microorganism can be lost in particular for the presence of antimicrobial agents. The several attempts to
restore the symbiosis have not been successful up to now.
The new knowledge on the symbiosis of the tephritid flies and advances in biotechnology give the possibility to improve B. oleae
mass-rearing once the symbiont can be successfully reared in vitro
Investigation on voltinism of Neodryinus typhlocybae (ASHMEAD) (Hymenoptera Drynidae) in natural contest
No full text- …
