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Papers by Giuseppe Rotundo

The Journal of Organic Chemistry, 2001

Entomologia Experimentalis et Applicata, 1985

Field responses of Gortyna xanthenes (Germar) males to traps baited with different mixtures of th... more Field responses of Gortyna xanthenes (Germar) males to traps baited with different mixtures of the female sex pheromone components were evaluated in an artichoke field. Catches were compared to those obtained by virgin females and light traps. The best results were achieved by utilizing a mixture of 5 mg Z11–16: Ald + 0.15 mg Z9–16:Ald + 0.15 mg 16:Ald + 0.12 mg Z11–16:OH, which captured only G. xanthenes males 3–5 times more than light traps and ca two times more than one virgin female. Starting from the basic mixture Z11–16:Ald (89–92%) + Z9–16:Ald (2–4%), the addition of 16:Ald (2–4%) and of Z11–16:OH (2–3%) produced an increase of G. xanthenes and a decrease of H, armigera (Hb.) catches. The inhibitory action of Z11–16:OH towards H. armigera males was confirmed.

IOBC WPRS BULLETIN, 2000

... 189-194 189 Electrophysiological and olfactory responses of Ephestia kuehniella Zeller adults... more ... 189-194 189 Electrophysiological and olfactory responses of Ephestia kuehniella Zeller adults to cereals' semiochemicals Antonio De Cristofaro ... Hodges, RJ, Benton, FP, Hall, DR, Dos SantosSerôdio, R., 1984: Control of Ephestia cautella (Walker)(Lepidoptera: Phycitidae) by ...

Informatore Agrario, 1993

Biomolecules

Besides its use in the brewing industry, hop cones appear as a powerful source of biologically ac... more Besides its use in the brewing industry, hop cones appear as a powerful source of biologically active compounds, already checked for their putative anticancer, antimicrobial, and other bioactivities. Conversely, hop use in pest control remains to date under-investigated. Therefore, the biological activity of hop essential oil (EO) and its main constituents was investigated here against Sitophilus granarius. Adult contact toxicity was found 24 h after treatment with hop EO (LD50/LD90 13.30/40.23 µg/adult), and its three most abundant components, α-humulene, β-myrcene, and β-caryophyllene (LD50/LD90 41.87/73.51, 75.91/126.05, and 138.51/241.27 µg/adult, respectively); negligible variations at 48 h, except for α-humulene (LD50/LD90 26.83/49.49 µg/adult), were found. The fumigant toxicity of the EO and terpenes was also checked: in the absence of wheat grains, β-myrcene showed the highest inhalation toxicity (LC50/LC90 72.78/116.92 mg/L air), whereas α-humulene, β-caryophyllene, and the...

BioMed Research International, 2016

Volatiles emitted by the host’s food would be the first signals used by parasitoids in the host l... more Volatiles emitted by the host’s food would be the first signals used by parasitoids in the host location process and are thought to play an important role in host habitat location. In this study, the olfactory responses ofTheocolax elegans(Westwood), a Pteromalid wasp that parasitizes immature stages of stored-product insect pests developing inside cereal or leguminous grains, to volatiles emitted by healthy wheat grains, their hexane extracts, and different doses of three individual compounds previously identified in cereal grain odors were investigated in Y-tube olfactometer and Petri dish arena behavioral bioassays and electroantennogram recordings. In Y-tube olfactometer bioassays, odors from healthy wheat grains and their hexane extracts were attractive to both sexes ofT. elegans. Moreover, hexane extracts elicited arresting effects in Petri dish arena. The three synthetic compounds valeraldehyde, maltol, and vanillin elicited dose-dependent responses in both male and female ad...

The Collemeluccio Natural Reserve is characterised by its extremely interesting vegetation. Its S... more The Collemeluccio Natural Reserve is characterised by its extremely interesting vegetation. Its Silver Fir (Abies alba) woodlands, represents the last natural strip of this type of forest in central and southern Italy. In order to update our knowledge on the Heterocera (Macrolepidoptera) of the Collemeluccio Natural Reserve (Pescolanciano, Isernia, Molise), a survey was carried out by light trapping between May 1996 and December 1998. On the whole 218 species were recorded, 133 of which were previously unreported for the Molise Region. Many others are of a particular interest. Eupithecia conterminata (Lienig & Zeller, 1846), is linked to Picea abies and Picea excelsa and is reported here from Italy for the first time. Hyloicus pinastri (Linnaeus, 1758), Peribatodes secundarius (Esper, 1794), Hylaea fasciaria (Linnaeus, 1758), Puengeleria capreolaria (Denis & Schiffermüller, 1775), Thera britannica (Turner, 1925), Eupithecia tantillaria Boisduval, 1840, Lithophane lapidea (Hübner, 18...

IV International Chestnut Symposium, 2009

Italian Journal of Food Science

A simple and rapid flotation method for separating insect fragments in bran and fine bran was dev... more A simple and rapid flotation method for separating insect fragments in bran and fine bran was developed. A 25 g sample is properly hydrated by immersion and stirring (10 min) in hot (90 degrees C) distilled water (600 mL) and then sieved (mesh sieve n. 140) under jets of cold tap water. The trapping is quantitatively transferred to a Wildman trap flask, dissolved in ethanol (60%) and floated with light mineral oil. The material floated is paper-filtered with a Buchner funnel under vacuum. Material obtained from three consecutive flotations and filtrations are microscopically examined and the insect fragments are counted. The new method which requires low input of facilities and non-toxic reagents could be useful to detect insect fragments in bran and fine bran used for the production of whole food or animal feed.

Journal of Pest Science, 2015

ABSTRACT

Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 2011

The insecticidal activity of different extracts (aqueous, methyl alcohol, hexane and petroleum et... more The insecticidal activity of different extracts (aqueous, methyl alcohol, hexane and petroleum ether) of the aerial part of Scrophularia canina against the second and fourth-instar larvae and adult females of Culex pipiens molestus was investigated. The larvicidal activity of all the extracts was tested in the dose range from 7.8 to 1000 ppm. The highest toxicity was exhibited by the petroleum ether extract against second-instar larvae (48 h LC₅₀ = 23.5 ppm) and by the hexane extract against fourth-instar larvae (48 h LC₅₀ = 23.6 ppm). Methyl alcohol and aqueous extracts did not show any larvicidal activity. Sub-lethal doses of petroleum ether and hexane extracts induced increasing mortalities during 13 days after treatment but did not affect the duration of larval and pupal stages. In persistence tests, the hexane extract retained a satisfactory larvicidal activity after a 10-day period of test solutions incubation. Topical treatment of adult females with doses from 0.25 to 8 μg pe...