86 research outputs found
The peculiar herpetofauna of some Tsaratanana rainforests and its affinities with Manongarivo and other massifs and forests of northern Madagascar
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L'accoppiamento di Physcus testaceus Masi (Hym. Aphelinidae), con notizie preliminari sulla struttura dello scapo antennale maschile.
Osservazioni sul complesso parassitario di Lasioptera sp. (Diptera: Cecidomyiidae) su Arundo donax L., con particolare riferimento a Lathromeris cecidomyiiae & Laudonia (Hymenoptera: Trichogrammatidae).
Utilizzo di propoli in soluzione idroalcolica per il controllo di insetti fitofagi degli agrumi
The spread of the non-native pine tortoise scale toumeyella parvicornis (Hemiptera: Coccidae) in europe: A major threat to pinus pinea in southern Italy
Invasive pests are considered a major threat to biodiversity, conservation and agriculture. The Italian peninsula is a major site of intensive commercial exchange and transport of plants and goods, being consequently one of the European countries most invaded by alien insects. Hemiptera Coccomorpha are the largest group of non-native species recorded in Europe. For example, in the last 70 years more than 50 scale insect species have been accidentally introduced into Italy, 50% of which are now well established. This study was conducted to investigate the biology and the damage of the non-native pine tortoise scale Toumeyella parvicornis Cockerell (Hemiptera: Coccidae) accidentally introduced a few years ago into southern Italy. T. parvicornis is multivol-tine in the invaded territories, being able to complete at least three generations per year, overwintering in the adult female stage. Oviposition periods during 2015-2017 surveys occurred from late April to end of May, from July to first half of August, and from mid-September to November. Fecundity was positively correlated to body size of gravid females and varied among the generations. Investigations on natural control by autochthonous species showed a seasonal activity of Metaphycus flavus (Hymenoptera: Encyrtidae), parasitizing mainly immature male individuals. The morpho-molecular approach confirms the hypothesis of an ongoing shift of parasitoid populations from other indigenous soft scales to the invasive one. Unfortunately, the low level of natural control was ineffective in hampering the spread of T. parvicornis, and preventing the dieback of local pine species, Pinus pinea, as observed in all invaded areas
Risposte elettroantennografiche di Tomicus destruens (Wollaston) (Coleoptera Scolytidae) a sostanze volatili di origine vegetale
Risposte elettroantennografiche di Tomicus destruens (Wollaston) (Coleoptera: Scolitidae) a sostanze volatilidi origine vegetale
Sono state identificate alcune cicaline del genere Anoplotettix su vite, potenziali vettori di viru
Synthesis, spectroscopic characterization and antimicrobial evaluation of some (E)-N-(4-substitutedbenzylidene)-4-fluorobenzenesulfonamides
In the present study, six numbers of Schiff bases (1-6) have been synthesized by the condensation of 4-fluorobenzenesulfonamide and substituted aromatic aldehyde. The purities of these Schiff bases have been checked by their physical constants, IR, 1H NMR and 13CNMR spectral data. The antimicrobial activities of these Schiff bases have been evaluated using Bauer-Kirby method
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