scholarly journals Laboratory Evaluation of Natural and Synthetic Aromatic Compounds as Potential Attractants for Male Mediterranean fruit Fly, Ceratitis capitata

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2409 ◽  
Author(s):  
Nurhayat Tabanca ◽  
Marco Masi ◽  
Nancy D. Epsky ◽  
Paola Nocera ◽  
Alessio Cimmino ◽  
...  
Keyword(s):  
Aromatic Compounds ◽  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Current Control ◽  
Mediterranean Fruit Fly ◽  
Laboratory Evaluation ◽  
Binary Choice ◽  
Agricultural Pests ◽  
Phenyllactic Acid ◽  
Olfactory Responses

Ceratitis capitata, the Mediterranean fruit fly, is one of the most serious agricultural pests worldwide responsible for significant reduction in fruit and vegetable yields. Eradication is expensive and often not feasible. Current control methods include the application of conventional insecticides, leading to pesticide resistance and unwanted environmental effects. The aim of this study was to identify potential new attractants for incorporation into more environmentally sound management programs for C. capitata. In initial binary choice bioassays against control, a series of naturally occurring plant and fungal aromatic compounds and their related analogs were screened, identifying phenyllactic acid (7), estragole (24), o-eugenol (21), and 2-allylphenol (23) as promising attractants for male C. capitata. Subsequent binary choice tests evaluated five semisynthetic derivatives prepared from 2-allylphenol, but none of these were as attractive as 2-allylphenol. In binary choice bioassays with the four most attractive compounds, males were more attracted to o-eugenol (21) than to estragole (24), 2-allylphenol (23), or phenyllactic acid (7). In addition, electroantennography (EAG) was used to quantify antennal olfactory responses to the individual compounds (1–29), and the strongest EAG responses were elicited by 1-allyl-4-(trifluoromethyl)benzene (11), estragole (24), 4-allyltoluene (14), trans-anethole (9), o-eugenol (21), and 2-allylphenol (23). The compounds evaluated in the current investigation provide insight into chemical structure–function relationships and help direct future efforts in the development of improved attractants for the detection and control of invasive C. capitata.

scholarly journals Evaluation of Rearing Parameters of a Self-Limiting Strain of the Mediterranean Fruit Fly, Ceratitis capitata (Diptera: Tephritidae)

Insects ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 663
Author(s):  
Rachid Elaini ◽  
Romisa Asadi ◽  
Neil Naish ◽  
Martha Koukidou ◽  
Mazih Ahmed
Keyword(s):  
Egg Production ◽  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Economic Benefits ◽  
Current Control ◽  
Mediterranean Fruit Fly ◽  
Economic Losses ◽  
Pome Fruit ◽  
The Mediterranean ◽  
Female Specific

The Mediterranean fruit fly (medfly), Ceratitis capitata, is a significant pest of stone and pome fruit that causes considerable economic losses worldwide. Current control is primarily based on insecticides, which are often mixed with protein baits. Oxitec has developed a self-limiting medfly strain (OX3864A) that demonstrates conditional female-specific mortality in the early life stages. Sustained release of OX3864A males offers medfly control, which should lead to substantial economic benefits in area-wide programmes. In the current study, the optimum quantities of mature and immature stages of the strain are assessed under semi-mass production. Moreover, the rearing and quality control limitations related to the production of this strain are provided. The data here demonstrate that the egg hatch rate can reach >85% under optimum rearing conditions. However, this depends on the number of pupae loaded in a cage and their ages. The suggested pupal density ranges between 14,000 and 18,000 pupae per cage to provide optimum egg production. In parallel, the embryo densities of 1.25–1.5 mL/kg larval Tet+ diet are recommended for strain propagation, while embryo densities of 1.25–2.0 mL/kg larval Tet− diet are suggested for male-only pupal production.

scholarly journals Effect of geographical directions, height and the color of yellow traps in capture of Mediterranean fruit fly, Ceratitis capitata (Wiedemann, 1824) in citrus orchards

2017 ◽  
Vol 109 (3) ◽  
pp. 561
Author(s):  
Amir Hossein TOORANI ◽  
Habib ABBASIPOUR
Keyword(s):  
Ceratitis Capitata ◽  
Ground Level ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Lemon Yellow ◽  
Agricultural Pests ◽  
Mazandaran Province ◽  
Yellow Color ◽  
Yellow Traps ◽  
Citrus Orchards

<p>Mediterranean fruit fly, <em>Ceratitis capitata </em>(Wiedemann, 1824) (Dip.: Tephritidae) is one of the most destructive agricultural pests in the world. To replace chemical control methods, as well as the timing of the peak population of Mediterranean fruit fly, the yellow sticky vertical traps were used in this study. The research was carried out in some citrus orchards of various cities of Mazandaran province of Iran, during the four months from August to November 2016. To determine the best type of yellow color to trap this fly, four types of yellow colors with measured wavelength of reflection, including the fluorescent yellow (538 nm), lemon yellow (574 nm), yellow (602 nm) and amber yellow (641 nm), were used. Also, to determine the best geographical direction and appropriate height for installation of yellow cards, four cardinal directions and five different heights of 1, 1.5, 2, 2.5 and 3 m above ground level were determined and the cards were installed. The results of mean comparison of captured flies in different treatments showed that there are significant differences between all of them. The results indicated that the fluorescent yellow, heights of 1.5 and 2 m, the south direction, and month October had the highest number of capture in yellow cards.</p>

scholarly journals Evaluation of rearing parameters of a self-limiting strain of the Mediterranean fruit fly,Ceratitis capitata(Diptera: Tephritidae)

2018 ◽  
Author(s):  
Elaini Rachid ◽  
Romisa Asadi ◽  
Neil Naish ◽  
Martha Koukidou ◽  
Mazih Ahmed
Keyword(s):  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Economic Benefits ◽  
Current Control ◽  
Mediterranean Fruit Fly ◽  
Economic Losses ◽  
Pome Fruit ◽  
Accurate Identification ◽  
Effective Manner ◽  
The Mediterranean

AbstractThe Mediterranean fruit fly,Ceratitis capitata, (medfly) is an important pest of stone and pome fruit, causing significant economic losses worldwide. Current control is primarily based on insecticides, often mixed with protein baits. Chemical approaches are effective but there are label limits to avoid residues in fruits and harm to the environment and sustained use will lead to pesticide resistance in the medfly pest. In recent years, emphasis has been placed on environmentally friendly methods to control medfly.Oxitec has developed a self-limiting medfly strain (OX3864A) that demonstrates conditional female-specific mortality in the early life stages. Sustained release of OX3864A males offers a mating-based approach to medfly control, which should lead to significant economic benefits in area-wide programmes. Furthermore, a heritable fluorescent marker provides quick and accurate identification of released OX3864A males for efficient monitoring in the field.An important prerequisite of mating-based control programmes is the availability of adequate numbers of high-quality male flies in a sustainable and cost-effective manner. This paper summarises rearing optimisations for the OX3864A strain and the production of OX3864A males.

Effects of juvenoids on the Mediterranean fruit fly, Ceratitis capitata (Wied.) (Diptera, Tephritidae)

1974 ◽  
Vol 64 (4) ◽  
pp. 643-651 ◽  
Author(s):  
D. S. Daoud ◽  
F. Sehnal
Keyword(s):  
Active Compound ◽  
Aromatic Compounds ◽  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Larval Food ◽  
Aliphatic Compounds ◽  
Before And After ◽  
Puparium Formation ◽  
Imaginal Differentiation

AbstractScreening of 38 selected juvenoids on Ceratitis capitata (Wied.) revealed that several aromatic compounds, mostly ethers of 6,7-epoxygeraniol and of 6,7-epoxycitronellol, inhibited hatching when administered to freshly laid eggs as 0·1% acetone solution. Application of juvenoids within 24 h before and after puparium formation caused disturbances in imaginal differentiation. Treated insects developed either into pupa-adult intermediates failing to emerge or into defective adults whose fecundity was severely decreased. Both earlier and later applications of juvenoids were less effective. The most active compound in topical assay on fully grown larvae was ethyl 10,11-epoxy-5-oxa-3,7,11-trimethyl-2-dodecenoate, which inhibited emergence of 50% of treated insects at 0·01 μg/specimen and caused external deformities in 50% of emerged adults at 0·00001 μ/g/specimen. Four other aliphatic compounds (methyl 11-methoxy-3,7,11-trimethyl-2,6-dodecadienoate; ethyl 11-methoxy-3,7,11-trimethyl-2-dodecenoate; isopropyl 3,7,11-trimethyl-2,4-dodecadienoate; and isopropyl 11-methoxy-3,7,11-trimethyl-2, 4-dodecadienoate) and l-ethyl-4[(6,7-epoxy-3,7-dimethyloctyl)oxy] benzene were about five times less active. A concentration of 33 parts /106 of ethyl 10,ll-epoxy-5-oxa-3,7,11-trimethyl-2-dodecenoate in larval food caused deformities in 60% of emerged adults.

Effectiveness of Entomopathogenic Nematodes Against Ceratitis capitata (Diptera: Tephritidae) Pupae and Nematode Compatibility with Chemical Insecticides

2021 ◽  
Author(s):  
Maguintontz Cedney Jean-Baptiste ◽  
Andressa Lima de Brida ◽  
Daniel Bernardi ◽  
Sérgio da Costa Dias ◽  
Juliano de Bastos Pazini ◽  
...  
Keyword(s):  
Biological Control ◽  
Entomopathogenic Nematodes ◽  
Ceratitis Capitata ◽  
Integrated Management ◽  
Fruit Fly ◽  
Steinernema Carpocapsae ◽  
Mediterranean Fruit Fly ◽  
Fruit Crops ◽  
Class 1 ◽  
Pupal Mortality

Abstract The Mediterranean fruit fly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) is among the main pests of fruit crops worldwide. Biological control using entomopathogenic nematodes (EPNs) may be an alternative to suppress populations of this pest. Thus, the aim of this study was to evaluate the pathogenicity and virulence of six EPN isolates (Heterorhabditis bacteriophora HB, H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47, and S. brazilense IBCB-n06) against C. capitata pupae. The compatibility of EPNs with different chemical insecticides that are registered for management of C. capitata was also assessed. Isolates of H. bacteriophora HB and S. brazilense IBCB-n06 at a concentration of 1,000 infective juveniles (IJ)/ml proved to be most pathogenic to C. capitata (70 and 80% mortality, respectively). In contrast, the isolates H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47 provided pupal mortality of less than 60%. Bioassays to determine lethal concentrations indicated that concentrations of 600 IJ/ml (H. bacteriophora HB) and 1,000 IJ/ml (S. brazilense IBCB-n06) showed the highest virulence against C. capitata pupae. In contrast, the highest numbers of IJs emerged at concentrations of 1,200 and 200 IJ/ml. In compatibility bioassays, malathion, spinetoram, phosmet, acetamiprid, and novaluron were considered compatible with and harmless (Class 1) to H. bacteriophora HB and S. brazilense IBCB-n06, according to IOBC/WPRS. This information is important for implementing integrated management programs for C. capitata, using biological control with EPNs, whether alone or in combination with chemical insecticides.

Effects of cold post-harvest treatments of sweet bell peppers on the development of the Mediterranean fruit fly ( Ceratitis capitata )

2016 ◽  
Vol 120 ◽  
pp. 16-22 ◽  
Author(s):  
Rossana Castro ◽  
Elazar Fallik ◽  
Esther Nemny-Lavy ◽  
Sharon Alkalai-Tuvia ◽  
Polychronis Rempoulakis ◽  
...  
Keyword(s):  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Post Harvest ◽  
Bell Peppers ◽  
The Mediterranean

scholarly journals Seasonal occurrence of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) in southern Syria

2016 ◽  
Vol 85 (3) ◽  
pp. 311-323 ◽  
Author(s):  
Mohammed Mansour ◽  
Fater Mohamad
Keyword(s):  
Ceratitis Capitata ◽  
Fruit Fly ◽  
Fruit Trees ◽  
Fruit Production ◽  
Small Population ◽  
Mediterranean Fruit Fly ◽  
Diospyros Kaki ◽  
Population Fluctuations ◽  
Sampling Studies ◽  
The Mediterranean

Abstract Population fluctuations of the Mediterranean fruit fly (medfly), Ceratitis capitata, were investigated between 1999 and 2001 at several locations representing fruit production areas in the southern part of Syria (Damascus Ghota, Zabadani, Sargaiah, Rankus, Orneh and Ain Al-Arab). Medfly adults were monitored weekly all year around using Jackson traps baited with trimedlure dispensers. Larvae were also sampled in Damascus Ghota by collecting fruits from ripe or ripening fruit trees and recording the number of larvae emerged from these fruits. In addition, suspected overwintering refuges were sampled at weekly intervals during the three coldest months of the year (December – February) and the number of collected larvae was recorded. The results of trap catches and fruit sampling studies showed a similar pattern of occurrence of medfly populations in the study areas, particularly in Damascus Ghota, during the three years of the study. In Damascus Ghota, flies were caught continuously from early June to late December with some variability between years. Two distinct periods of high fly activity were observed: the first one occurred in August and the second in November with a much higher amplitude. In general, seasonal fluctuations in the pattern of occurrence were influenced by differences in temperature and abundance of preferred host fruits. Traps on fig Ficus carica and oriental persimmon Diospyros kaki trees caught the highest numbers of flies, and fruits collected from these trees showed the highest level of infestation, reaching 100% for fig fruit late in the season. Sampling fruits (in Damascus Ghota) from trees during the three coldest months of the year showed that a small population of medfly larvae was able to survive winter conditions in prickly pear Opuntia vulgaris fruit left on the trees. In the other areas of the study (Zabadani, Sargaiah, Rankus, Orneh and Ain Al-Arab), only a few flies were caught.

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