Search results for " Entomologia"
showing 10 items of 590 documents
PRIMI DATI SULLA DANNOSITÀ E SUL CONTROLLO DI OPHELIMUS MASKELLI ASHMEAD SU EUCALYPTUS CAMALDULENSIS DEHN. IN VIVAIO
2008
The role of the Krauss’s organ in sound production in Pamphagidae (Caelifera: Orthoptera).
2012
In Pamphagidae, the Krauss’s organ is located on both sides of the 2nd tergite and its function is superficially known. It has been proposed to have a stridulatory function. This organ can be found in all Pamphagidae except the apterous genera. Rearing specimens of some species and observing mounted pamphagids allowed the author to observe that when the Krauss’s organ is absent (most apterous species) the tympanum is also absent; further, he discovered specialized stridulatory structures on hind femurs of some taxa for sound emission. By rearing two Pamphagidae belonging to different genera, fragments of stridulations involving the Krauss’s organ and specialized structures on the hind femur…
Evaluation of infestation by Lobesia botrana (Dennis et Schiffermüller) (Lepidoptera, Tortricidae) and its relation to territorial differences and cu…
2013
A three year study (2008-2010) was carried out in two organically managed vineyards in western Sicily to verify both the influence of different cultivars and microclimatic conditions on grape moth infestation and on mould infections of grapes. Observations were done on two autochthonous cultivars (Inzolia and Catarratto) and four international ones (Chardonnay, Cabernet Sauvignon, Syrah and Merlot). Results showed a different degree of infested grapes among the different cultivars in both farms but also a different level of infestation between the two farms for the same cultivar. Chardonnay was the most infested cultivar by the grape moth larvae, while Merlot was the less infested one. Botr…
Prime liste faunistiche di Lepidotteri diurni in aree protette italiane
2014
Nell’ambito del progetto Life+ 2008, Validation of risk management tools for genetically modified plants in protected and sensitive areas in Italy (MAN-GMP-ITA), sono stati condotti studi di caratterizzazione dell’entomofauna di alcune aree protette in Italia, da marzo a settembre di due anni consecutivi (2011-2012). Tali studi hanno condotto alla redazione di liste faunistiche di Lepidotteri diurni, Lepidotteri notturni e Coccinellidi per ciascun sito. I due gruppi di specie sono stati scelti in considerazione del loro possibile ruolo come specie “non-target” in studi di impatto ambientale. Le aree oggetto di studio sono state scelte in modo da essere rappresentative di diverse aree bio-ge…
Influenza dell’altitudine e di due tecniche agronomiche sull’infestazione e i danni indiretti causati da Lobesia botrana (denis et Schiffermüller) (L…
2011
Two years (2008-2009) field observations were carried out to evaluate the effects of altitude, of kaolin application and of early leaf thinning practice on the infestation level and damages caused by grape moth Lobesia botrana. The difference of 80 m. a.s.l. significantly influenced the infestation level of grape moth, which was lower, of about 20%, at the higher altitude. The early leaf thinning practice did not influence the grape moth infestation nor the presence of sour bunch rot and grey mould on grapes. On the other hand, kaolin sprayings significantly reduced the infestation level in both altitudes (from 11 to 22%) as well as the presence of sour bunch rot and fungi. However, the per…
Incidence of grapevine moth Lobesia botrana (Den. & Schif.) on occurrence of ochratoxin A in grapes
2008
Observations were carried out in an organic vineyard (cv malvasia di candia), at salemi (sicily), during 2006-2007, in order to verify the influence of grapevine moth lobesia botrana (den. & schif.) on presence of ochratoxin a (ota) in bunches at harvest time. a percentage of 12.98% of bunches were attacked by grape moth during 2006, while 8.65% of them were infected by grey mould and sour bunch rot (5.77% and 2.88% respectivelly). analyses carried out on 12.98% infested bunches, showed a level of 20 μg/kg of ota, while on intact samples 0.04 μg/kg of toxin was registered. During 2007, infestation of bunches by grape moth was very low (2.05%), due to the particular climatic conditions, and …
Valutazione dell’infestazione di Lobesia botrana (dennis et Schiffermüller) in funzione alle differenze territoriali e alla suscettibilità varietale
2011
A three years study (2008-2010) was carried out in two organic managed vineyards in western Sicily in order to verify both the influence of different cultivars and microclimatic conditions on grape moth infestation and on mould infections of grapes. Observations were done on two autochtonous (Inzolia and Catarratto) and four international (Chardonnay, Cabernet Sauvignon, Syrah and Merlot) cultivars. Results showed a different degree of infested grapes among the different cultivars in both farms but also a different level of infestation between the two farms for a same cultivar. Chardonnay was the most infested cultivar by the grape moth larvae, while Merlot was the less infested. Botrytis c…
IDENTIFICAZIONE E UTILIZZAZIONE DI MARCATORI MOLECOLARI NELLA SISTEMATICA DEI FITOSEIDI (PARASITIFORMES, PHYTOSEIIDAE)
2012
Uno studio inedito di Enrico Pirajno di Mandralisca sull’entomofauna delle isole Eolie.
2010
Tra i manoscritti inediti di Enrico Pirajno, conservati presso l’Archivio Storico della FondazioneMandralisca, esiste un elenco dei “Coleotteri delle isole Eolie”, che rappresenta il primo tentativo pionieristico di un catalogo dell’entomofauna dell’arcipelago. Nel presente contributo ne viene illustrato il contenuto e brevemente discussi gli aspetti relativi al suo valore storico, documentale e scientifico.