Abstract The phenology and population dynamics of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), were studied from 1991 to 1995 using Jackson traps baited with trimedlure periodic sampling in two orchards Thessaloniki northern Greece (40.3° north latitude, 22.5° longitude). This area is located within northernmost zone establishment fly Europe. No adults captured December end June. first captures recorded June August, depending on year orchard, rates peaked autumn each year....

Population monitoring of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), was studied in 1998 a mixed-fruit orchard northern Greece, using International Pheromone McPhail traps (IPMT) baited with female targeted attractants ammonium acetate, putrescine, and trimethylamine, Jackson male specific parapheromone trimedlure. Special emphasis placed on detecting low initial adult population resulting from surviving overwintering larvae as early possible spring summer. Traps were...

The overwintering potential of wild Mediterranean fruit fly, Ceratitis capitata (Wiedemann), within the northernmost zone establishment fly was studied during 3 winters (1992-1995) in an orchard northern Greece (40.3° north latitude). During late autumn and early winter these years, larvae various naturally infested host fruits, pupae, adults were exposed outdoors to natural temperature conditions. Mortality rates 100% for pupae greater than 60% subjected treatments. that survived treatments...

Abstract The sexual calling incidence of wild and mass‐reared Mediterranean fruit fly males, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), was studied at 25 °C a photophase 14 h starting 0600 h. Wild males fed on yeast hydrolysate sugar attained maturity earlier exhibited higher activity than alone. In both hydrolysate‐fed levels were high during the first hours photophase, declined 0900–1000 h, then increased again reaching between 1200 1500 finally ceased after 1600 Food...

Two orchards that contained mainly citrus and a few other hosts were monitored during 1991-1993 for Ceratitis capitata (Wiedemann) on the Mediterranean island of Chios, eastern central Greece. The are located ≈0.5 km apart in producing plain differ their numbers relative abundance apricots, sweet oranges, bitter oranges. Overall, captures Jackson traps baited with trimedlure low June most July also December January, high from August through November, absent February May. Early season, adult...

Summary The main purpose of this study was to test the hypotheses that major changes in age structure occur wild populations Mediterranean fruit fly (medfly) and a substantial fraction individuals survive middle beyond (> 3–4 weeks). We thus brought reference life tables deconvolution models bear on medfly mortality data gathered from 3‐year field‐captured were monitored laboratory. average time‐to‐death captured females differed between sampling dates by 23.9, 22.7, 37.0 days 2003, 2004,...

Female Mediterranean fruit flies (medfly) Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) perceive both qualitative and quantitative aspects of citrus chemistry. However, the behavioural biological adjustments this response remain largely unknown. In present study, ovipositional responses gravid female medflies to essential oils (i.e. most critical resistance factor medfly infestation) various fruits are investigated. dual‐choice (treatment versus distilled water control) experiments,...

In recent years the number of available chemical pesticides has been significantly reduced and there have an urgent need for discovery alternative to products, as among others natural zeolites (zeolitic rocks). We determined mineralogical composition a specific continuous layers zeolitic rock sample (ZeotP) from Petrota, Ev-ros, Greece evaluated its oviposition deterrent effect olive fruit fly Bactrocera oleae (Diptera: Terphritidae). The tested zeolite contained 70 wt. % Clinoptilolite, 18...

High quality natural zeolites may have insecticidal effects and could be used for pest control. We determined the mineralogical chemical composition of four representative samples zeolite-rich rocks (zeot1–zeot4) collected from north-eastern Greece their oviposition deterrent effect olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae). Samples zeot1–zeot4 contain 54–70 wt.% clinoptilolite (HEU-type zeolite) are free fibrous minerals. Regarding composition, SiO2 between 64.29...

Abstract The response of wild Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) males to orange peel chemicals and their effect in mating competitiveness exposed these was studied the laboratory (25±2 °C, 65±5%, r.h.). Males were attracted, landed, arrested on ripe oranges that superficially wounded flavedo region peel, fed wounds. Exposure conferred a advantage over unexposed males. In flies 1 10 days age, this independent age during exposure lasted at least following exposure....

Abstract Alighting and capture of wild olive fruit flies, Bactrocera oleae (Rossi) (Diptera, Tephritidae), on spheres seven different colours was studied Chios island, Greece. The 70‐mm‐diam plastic spheres, coated with adhesive, were suspended trees. Yellow orange trapped the greatest number males while red black females. White blue least effective for both sexes. Peak captures occurred in late afternoon especially around sunset. Since mating takes place last hours photophase, increased...

Abstract Responses of Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) adults to chemicals from citrus fruits were quantified in choice tests conducted large field cages housing naturally planted orange trees, on the Greek island Chios. Both sexes responded strongly released artificial cuts made pulp peeled oranges and also natural or commercial juice applied surface yellow 7.0 cm diameter spheres. Males oily region peel, flavedo less sour lemon. In contrast,...

Abstract Although exposure to plants has been shown influence sexual behaviour in a number of phytophagous insect species, relatively small fruit flies have investigated that respect. Here, we evaluated the effect pulp guava and mango essential oils emanating from glands flavedo area lemons on mating success Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) males. We also different durations need for physical contact with fruit. Results showed increased both wild laboratory males...

Abstract Previous work has demonstrated that exposure of males the Mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae), to scent sweet orange increases their mating success relative non‐exposed males. Here, we demonstrate commercial essential oils bitter orange, mandarin lemon and grapefruit confer a significant advantage as well. Likewise, peel‐wounded oranges lemons, Merlin, Newhole Naveline varieties, also conferred advantage. Exposure grapefruits well local Greek variety...

We studied the insecticidal activity of different concentrations very high quality natural zeolites (zeolitic rock containing 92 wt% clinoptilolite) applied on dry beans. The test species was adult bean weevils Acanthoscelides obtectus (Say; Coleoptera: Bruchidae), and variables included temperatures humidity regimes. At certain zeolite mortality approached 100% within first day exposure. lethal concentration for 50% (LD50) 1.1 g/kg beans 1 d after temperature had no significant effects...

Abstract The olive fly, Bactrocera oleae (Rossi), is the main pest of olive, a host tree that thrives under conditions high and direct sun exposure. Although effect fruit on reproduction fly has been studied to some extent, there little knowledge light. In present work, we presence light intensity mating subsequent egg production flies at 25°C photoperiod regime L : D 16 8. results showed contact adults with fruit, or exposure odours, favoured both extent duration mating. This was higher low...

Trapping is considered a powerful tool in the monitoring and control of fruit flies high economic importance such as Mediterranean fly, Ceratitis capitata (Diptera: Tephritidae). However, cost trapping and, some cases, safety chemicals used baits are concerning for growers environment. Here we present novel, low cost, environmentally friendly, female-specific bait C. capitata, called Biodelear, that consists mixture attracting compounds us pyrazines, pyranones amorphous nitrogen-based...

Over 97% of the 203 male medflies monitored in a lifetime study their behaviour exhibited what we term supine (temporary upside-down orientation) starting an average 16.1 days prior to death (mean lifespan 61.7 days). Supine onset increased mortality risk by 39.5-fold and unit increase level 26.3%. The discovery that behavioural traits insects can be used as biomarkers health predict time has important implications regarding research on morbidity dynamics, neuroethology gerontology,...

Variation in lifespan may be linked to geographic factors. While latitudinal variation has been studied for a number of species, altitude received much less attention, particularly insects. We measured the different populations Natal fruit fly Ceratitis rosa along an altitudinal cline. For we first residual longevity wild flies by captive cohort approach and compared F(1) generation from same populations. showed increase with higher part our data. field collected (F0) average remaining...

In the inquiry on age related dietary assessment of an organism, knowledge distributional patterns food intake throughout entire life span is very important, however, nutritional studies often lack robust feeding quantification methods due to their limitations in obtaining short-term food-intake measurements. this study, we developed and standardized a capillary method allowing precise life-time measurements consumption by individual adult medflies, Ceratitis capitata (Diptera: Tephritidae),...

Abstract Females of the olive fruit fly Bactrocera oleae lay their eggs in olives mainly using volatile stimuli. Using GC‐MS analysis, we determined chemical composition blend emitted from field‐collected cv. Megaritiki, at different stages maturity. analysis demonstrated qualitative and quantitative differences headspace by fruit. Certain chemicals such as toluene, n ‐octane, α ‐pinene, limonene, ethyl hexanol, nonanal ‐dodecane, decanal ‐tetradecane were detected greater amounts,...