Search results for "Omologia"
showing 10 items of 602 documents
The use of kaolin to control Ceratitis capitata in organic citrus groves
2011
The Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera Tephritidae), is the key pest in some organically managed citrus orchards in Sicily. The effectiveness of processed kaolin (Surround WP) for control of C. capitata damage was tested in field trials carried out in 2003-2004 on two early ripening citrus species: satsuma (Citrus unshiu Markow.) and clementine (Citrus clementina Hort. ex Tan.). Although the number of males captured in trimedlure baited traps was high in both years and in both orchards, the percentage of damaged fruit varied greatly from almost 0% (satsuma 2003) to more than 60% (clementine, both years). Nevertheless, the application of processed kaolin signifi…
Le trappole a feromone per il monitoraggio del punteruolo rosso delle palme
2009
A previously unreported numph cocoon of Alphasida puncticollis on the islet of Lampione (Sicilian Channel) (Coleoptera Tenebrionidae).
2010
In this paper we present an unusual case of cocoons produced by larvae of Tenebrionid Alphasida (Glabrasida) puncticollis (Solier, 1836), which has been observed on the islet of Lampione (Sicilian Channel). Pupal cocoons have never been recorded for species belonging to this genus, and their occurrence results rarely documented within the family Tenebrionidae. Some ecological implications are discussed.
Scelionidae (Hymenoptera: Platygastroidea) recorded in Italy and their known hosts.
2020
Scelionidi (Hymenoptera: Platygastroidea) segnalati per l’Italia e loro ospiti noti. Il seguente lavoro propone una revisione della checklist italiana della famiglia Scelionidae dopo quella proposta da Bin et al. (1995). Viene inoltre fornito l’elenco delle specie di ospiti di Insecta e Arachnida individuate nel lavoro di raccolta bibliografica. In totale sono riportati 38 generi di scelionidi per l’Italia con 181 specie di cui 58 riportano anche gli ospiti appartenenti agli ordini: Insecta: Mantodea, Orthoptera, Embioptera, Hemiptera, Coleoptera, Neuroptera, Diptera, Lepidoptera; Arachnida: Araneae Dysderiidae, Lycosidae. Grazie all'intenso lavoro di ricerca del professor Giovanni Mineo, r…
Endogenous and exogenous factors affecting host chemical footprint exploitation by a hymenopterous egg parasitoid
2014
During the host location process, parasitoids encounter and explore a great variety of volatile and contact semiochemicals from the host-plant complex. In the system Nezara viridula and its egg parasitoid Trissolcus basalis, when wasps land on a plant, they can taste chemical footprints left by walking adult hosts. These cues represent a set of indirect host-related contact kairomones that induce arrestment and motivated searching behavior, as they drive wasps in an area where there is a high probability of finding hosts but are not able to “promise” the presence of the suitable host stage. Patch time allocation is strongly modified by experience gained during foraging on host traces. In fa…
Chemical analysis of residues left by walking adults of Nezara viridula which induce arrestment behavior in the egg parasitoid Trissolcus basalis.
2007
Chemical residues deposited by walking adults of the southern green stink bug (SGSB), Nezara viridula (L.) (Heteroptera: Pentatomidae), which play a role as contact kairomones inducing arrestment behavior in the egg parasitoid Trissolcus basalis (Wollaston), were investigated in laboratory experiments. Female wasps encountering an area contaminated by chemical residues from adult hosts showed an arrestment response characterized by prolonged periods of walking and turning, resulting in systematic return to the stimulus after encountering the treatment borders. When SGSB adults were dissected into separate body parts, extracts from legs and the dorsal laminar pronota of adult females elicite…
Effect of dual biotic stress on plant volatile synomones used by egg parasitoids
2014
Studies on semiochemical communication have demonstrated that broad bean plant, Vicia faba, emits volatile synomones induced by feeding and oviposition activities of the southern green stink bug, Nezara viridula, which recruit the egg parasitoid Trissolcus basalis. However plants growing in agro-ecosystems can be attacked by several herbivore species that could affect both above and belowground plant tissues with possible consequences for parasitoid recruitment. For example, broad bean plants can also be attacked by the leaf weevil, Sitona lineatus, and simultaneous attacks by the southern green stink bug and the leaf weevil can occur in agro- ecosystems. The purpose of this work was to inv…
A sex pheromone triggers courtship behaviour in the egg parasitoid Trissolcus brochymenae
2010
Climate change impact on extrinsic and intrinsic competition between egg parasitoids
2012
Climate changing is a real phenomenon and the last decade was the warmest decade ever. The impact of climate change on animal communities is complex, affecting species interactions in all trophic levels, in different ways and in different bio-geographic zones. Here we will discuss about the possible effects of climate changes in shaping the competition between egg parasitoid species to consume the same hosts. Egg parasitoids are important biological control agents due to their ability to kill the pest before the crop-feeding stages emerge. Competitive effects can be divided in “extrinsic competition”, the indirect interactions between adult females searching for hosts, and “intrinsic compet…
Primi risultati sull'efficacia dell'olio minerale e dello spinosad nella lotta a Cydia funebrana in un susineto biologico siciliano
2011
Cydia funebrana (Treitschke) è considerato il fitofago chiave del susineto, soprattutto sulle cultivar cino-giapponesi a maturazione tardiva e nell’agricoltura biologica, a causa della mancanza di prodotti citotropici e ovicidi. Nel 2010 sono state effettuate prove per il contenimento del tortricide per valutare l’efficacia dello Spinosad e dell’olio minerale come prodotto anti-ovideponente. Le prove sono state svolte in un susineto biologico di San Giuseppe Jato (Palermo), di oltre 5 ha, su piante delle cultivar Angeleno, Friar e Stanley. Per ciascuna di esse sono state individuate tre parcelle di 50 piante, marcando al loro interno 10 piante su cui effettuare i rilevamenti; due parcelle s…