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.

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 Population genetics and migration pathways of the Mediterranean fruit fly Ceratitis capitata inferred with coalescent methods

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5340 ◽  
Author(s):  
Maria Belen Arias ◽  
Samia Elfekih ◽  
Alfried P. Vogler
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Ceratitis Capitata ◽  
Local Population ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Sub Saharan Africa ◽  
Economic Losses ◽  
The Mediterranean ◽  
Migration Pathways

Background Invasive species are a growing threat to food biosecurity and cause significant economic losses in agricultural systems. Despite their damaging effect, they are attractive models for the study of evolution and adaptation in newly colonised environments. The Mediterranean fruit fly, Ceratitis capitata, as a member of the family Tephritidae, is one of the most studied invasive species feeding on many fruit crops in the tropics and subtropics worldwide. This study aims to determine the global macrogeographic population structure of Ceratitis capitata and reconstruct its potential migration routes. Method A partial mitochondrial cytochrome oxidase I gene from >400 individual medflies and 14 populations from four continents was sequenced and subjected to Bayesian demographic modelling. Results The Afrotropical populations (Kenya, South Africa and Ghana) harbour the majority of haplotypes detected, which also are highly divergent, in accordance with the presumed ancestral range of medflies in Sub-Saharan Africa. All other populations in the presumed non-native areas were dominated by a single haplotype also present in South Africa, in addition to a few, closely related haplotypes unique to a single local population or regional set, but missing from Africa. Bayesian coalescence methods revealed recent migration pathways from Africa to all continents, in addition to limited bidirectional migration among many local and intercontinental routes. Conclusion The detailed investigation of the recent migration history highlights the interconnectedness of affected crop production regions worldwide and pinpoints the routes and potential source areas requiring more specific quarantine measures.

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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