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Sexual behavior of mutant strains of the medfly Ceratitis capitata (Diptera: Tephritidae)
R.D Brice?o
Revista de Biología Tropical , 2003,
Abstract: Males of the mutant strains (blind, vestigal-winged) of the Mediterranean fruit fly (medfly), Ceratits capitata (Wiedmann) showed differences in behavior compared with control (mass-reared) males. Mutant males made fewer mating attempts and achieved fewer matings than control males. Vestigal-winged females copulated less frequently with both mutants. Blind males climbed rather than jumped onto females and copulated in very low numbers compared with control and vestigal males. Blind females copulated normally with control, males and in very low numbers with both types of mutant males Machos mutantes (ciegos, alas vestigiales) de la mosca del mediterráneo Ceratitis capitata (Wiedmann) mostraron diferencias en conducta comparados con los machos testigo (cría masiva). Los machos mutantes, realizaron menos intentos por aparearse y lograron menos apareamientos que los machos testigo. Las hembras con alas vestigiales, copularon menos con ambas clases de mutantes. Los machos ciegos, subieron en lugar de saltar sobre las hembras y copularon en números muy bajos comparados con los machos testigo y con los de alas vestigiales. Las hembras ciegas, copularon de forma normal con los machos testigo y en números muy bajos con ambos tipos de machos mutantes
Aphaereta ceratitivora sp. n. (Hymenoptera, Braconidae), a new parasitoid of Ceratitis capitata (Wiedemann) (Diptera, Tephritidae) from the Azores  [cached]
Cees van Achterberg,Tania Teixeira,LuIsa Oliveira
ZooKeys , 2012, DOI: 10.3897/zookeys.222.3618
Abstract: A new gregarious larval-pupal endoparasitoid of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is described and illustrated: Aphaereta ceratitivora sp. n. (Braconidae: Alysiinae: Alysiini).
Effectiveness of Beauveria bassiana Native Isolates in the Biological Control of the Med-iterranean Fruit Fly (Ceratitis capitata)  [PDF]
Fadi Othman Qazzaz, Mohammad Ibrahim Al-Masri, Radwan Mahmoud Barakat
Advances in Entomology (AE) , 2015, DOI: 10.4236/ae.2015.32006
Abstract: The effectiveness of native entomopathogenic Beauveria bassiana isolates in the biological control of the Mediterranean fruit fly (Ceratitis capitata) was evaluated under laboratory and field conditions. Local isolates (P. Bv32, P. Bv39, P. Bv41, P. Bv51, and P. Bv52) of the fungus B. bassiana induced higher adult mortalities (77%, 65%, 65%, 65%, and 58%, respectively) than a control against the Mediterranean fruit fly under laboratory conditions. Adult mortality increased by increasing the conidial concentrations. In addition, the lethal time (LT50) for killing adult C. capitata ranged from 3.91 to 5.60 days, and the logged lethal concentration (LC50) ranged from 3.80 to 10.50, depending on the isolate. Furthermore, the contact application method induced significantly higher mortality than feeding alone, compared with the control. In addition, spraying peaches with a conidial suspension of the isolates P. Bv32 and P. Bv39 significantly reduced infestation by the fruit fly, compared with the control. The isolates grew well at a temperature range of 25°C - 30°C; germination of the conidia occurred at 15°C - 30°C, and sporulation occurred at 20°C - 25°C. High Mediterranean fruit fly mortalities were induced at 15°C - 30°C, with significant differences among the isolates. However, the isolates failed to grow, germinate, or sporulate above 35°C or below 10°C. Under field conditions, a formula of the bioinsecticide containing the isolate P. Bv32 of B. bassiana significantly reduced peach infestation with Medfly maggots
Mortalidad de Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) por diversas cepas de Beauveria bassiana (Bals.) Vuillemin, en condiciones de laboratorio
MU?OZ, José A.;DE LA ROSA, William;TOLEDO, Jorge;
Acta zoológica mexicana , 2009,
Abstract: under laboratory conditions of 27 ± 2 °c, 80 ± 5% r. h. and 12:12 l:d, we performed a characterization of 16 strains of the entomopathogenic fungus beauveria bassiana (bals.) vuillemin, through bioessays by immersion. the strains were isolated from different hosts and their pathogenicity was evaluated on ceratitis capitata (wiedemann) females. results showed that mortality of flies ranged from 9.1 to 91.9%. average lethal time (lt50) of the most pathogenic strain was 3.8 days; while that the less pathogenic strain took 17.6 days. in a second series of experiments, the strains that registered the highest biological activity were evaluated as mentioned above. these strains showed high levels of mortality, spore production and spore recovery from the infected insects. according with these results, we discuss the potential that five strains of b. bassiana have be tested under field conditions to determinate if can be used in the control of this pest.
José A. MU?OZ,William DE LA ROSA,Jorge TOLEDO
Acta zoológica mexicana , 2009,
Abstract: Bajo condiciones de laboratorio (27 ± 2 °C de temperatura, 80 ± 5% de H. R. y 12:12 horas luz: obscuridad), se caracterizaron mediante bioensayos por inmersión, la patogenicidad de 16 cepas del hongo Beauveria bassiana (Bals.) Vuillemin aisladas de diferentes hospederos sobre hembras de Ceratitis capitata (Wiedemann). El rango de mortalidad que se observó fue de 9.1 a 91.9%; el tiempo letal medio de la cepa más virulenta fue de (TL50 = 3.83 días), mientras que en la cepa con menor virulencia, el tiempo letal medio fue de (TL50 = 17.64 días). En una segunda fase, las cepas que registraron mayor actividad biológica fueron evaluadas mediante el mismo procedimiento, en donde se registraron elevados índices de mortalidad, producción y recuperación de conidios a partir de los insectos infectados. De acuerdo con estos resultados, se discute el potencial que cinco cepas de B. bassiana tienen para ser evaluadas en condiciones de campo y determinar si pueden ser utilizadas en el control de dicha plaga.
Fluctuación estacional en la infestación de diversos hospedadores por la mosca del Mediterráneo, Ceratitis capitata (Diptera: Tephritidae), en la provincia de Buenos Aires
Segura,Diego F; Vera,M Teresa; Cladera,Jorge L;
Ecolog?-a austral , 2004,
Abstract: a survey of 11 host species of ceratitis capitata was carried out in an experimental area of san pedro (buenos aires, argentina) with an approximate extension of 115 ha. the abundance of adult flies was compared with the infestation level (inferred from the percentage of infested fruit and from the number of puparia/kg of fruit) along the reproductive season. also, the effect of some biotic and abiotic factors on the population fluctuations was analyzed. the study included 12 fortnightly samplings carried out between november 1999 and may 2000. in each sampling, mature fruits of 20 plants were taken at random. for each fruit, the number of puparia of ceratitis capitata was recorded. the fruiting periods of the host species present in the area were staggered along the reproductive season, assuring to the flies a continuous supply of hosts. nonetheless, population fluctuations were not related to the availability of hosts. the restrictive effect of low winter temperatures probably prevents population from reaching levels required to exploit the resource in proportion to its availability. there was a high association between the abundance of adult flies and infestation levels. in the study area, temperature was the only climatic factor showing significant association with the abundance of ceratitis capitata and infestation levels. correlations of the abundance of adult flies and of the infestation levels with the temperature of the previous period were higher than the correlation with the temperature of the current period, probably indicating that this climatic factor has a stronger effect on the immature stages than on the adults.
Simulation of Temperature Effect on the Population Dynamic of the Mediterranean Fruit Fly Ceratitis capitata (Diptera; Tephritidae)  [PDF]
S. El messoussi,H. Hafid,A. Lahrouni,M. Afif
Journal of Agronomy , 2007,
Abstract: Effects of the temperature on immature stage developmental times of the medfly Ceratitis capitata (Diptera; Tephritidae) were used to study the dynamics of population with FRUFLY model. To test the model in the field, flight activity was studied using para-pheromone traps. The FRUFLY model simulations agree with experimental data results of the insect collected by para-pheromone traps and predicts the appearance of the various generations of adults with time FRUFLY simulation modelling is an important tool for identifying insect pest population's size and can help to determine the urgency of action and evaluating options for management.
Incidencia de Anastrepha obliqua (Macquart) y Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) en carambola (Averrhoa carambola L.) en ocho localidades del estado de S?o Paulo, Brasil
Souza Filho, Miguel F. de;Raga, Adalton;Zucchi, Roberto A.;
Anais da Sociedade Entomológica do Brasil , 2000, DOI: 10.1590/S0301-80592000000200020
Abstract: during july and august 1996, surveys of natural infestation levels in star fruits were carried out in eight counties of the state of s?o paulo, brazil. infestation rates of 1.38 puparium/star fruit and 31.7 puparia/kg of star fruit were obtained. from the 2,474 emerged flies, 92.2% were anastrepha and 7.8% ceratitis capitata (wiedmann). all the anastrepha females belonged to anastrepha obliqua (macquart) (545). the braconid doryctobracon areolatus (szépligeti) was obtained in only two samples, from pindorama and presidente prudente; the parasitism rates were 2.4 and 0.6%, respectively.
Selection of Ceratitis capitata (Diptera: Tephritidae) Specific Recombinant Monoclonal Phage Display Antibodies for Prey Detection Analysis  [PDF]
César Monzó, Alberto Urbaneja, Miguel Ximénez-Embún, Julia García-Fernández, José Luis García, Pedro Casta?era
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0051440
Abstract: Several recombinant antibodies against the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), one of the most important pests in agriculture worldwide, were selected for the first time from a commercial phage display library of human scFv antibodies. The specificity and sensitivity of the selected recombinant antibodies were compared with that of a rabbit polyclonal serum raised in parallel using a wide range of arthropod species as controls. The selected recombinant monoclonal antibodies had a similar or greater specificity when compared with classical monoclonal antibodies. The selected recombinant antibodies were successfully used to detect the target antigen in the gut of predators and the scFv antibodies were sequenced and compared. These results demonstrate the potential for recombinant scFv antibodies to be used as an alternative to the classical monoclonal antibodies or even molecular probes in the post-mortem analysis studies of generalist predators.
Nitric oxide synthase-dependent NADPH-diaphorase activity in the optic lobes of male and female Ceratitis capitata mutants  [cached]
E Roda,E Municchi,E Conforti,MB Pisu
European Journal of Histochemistry , 2004, DOI: 10.4081/880
Abstract: Nitric oxide (NO) is acknowledged as a messenger molecule in the nervous system with a pivotal role in the modulation of the chemosensory information. It has been shown to be present in the optic lobes of several insect species. In the present study, we used males and females from four different strains of the medfly Ceratitis capitata (Diptera, Tephritidae): or; or,wp (both orange eyed); w,M360 and w,Heraklion (both white eyed), as models to further clarify the involvement of NO in the mutants’ visual system and differences in its activity and localization in the sexes. Comparison of the localization pattern of NO synthase (NOS), through NADPH-diaphorase (NADPHd) staining, in the optic lobes of the four strains, revealed a stronger reaction intensity in the retina and in the neuropile region lamina than in medulla and lobula. Interestingly, the intensity of NADPHd staining differs, at least in some strains, in the optic lobes of the two sexes; all the areas are generally strongly labelled in the males of the or and w,M360 strains, whereas the w,Heraklion and or,wp mutants do not show evident sexdependent NADPHd staining. Taken as a whole, our data point to NO as a likely transmitter candidate in the visual information processes in insects, with a possible correlation among NOS distribution, eye pigmentation and visual function in C. capitata males. Moreover, NO could influence behavioural differences linked to vision in the two sexes.
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