scholarly journals Development of Phytosanitary Cold Treatments for Oranges Infested With Bactrocera invadens and Bactrocera zonata (Diptera: Tephritidae) by Comparison With Existing Cold Treatment Schedules for Ceratitis capitata (Diptera: Tephritidae)

2013 ◽  
Vol 106 (4) ◽  
pp. 1608-1612 ◽  
Author(s):  
Guy J. Hallman ◽  
Scott W. Myers ◽  
Mokhtar F. El-Wakkad ◽  
Meshil D. Tadrous ◽  
Andrew J. Jessup
2020 ◽  
Vol 16 (4) ◽  
pp. 463-479
Author(s):  
Pasquale Lubello ◽  
Jean-Marie Codron

AbstractIn-transit cold treatment consists of exposing food commodities – generally fresh agricultural products – to temperatures approaching 0 °C for a variable number of days during shipping in purpose-equipped containers in order to manage the risks of quarantine contamination. In this paper, we show that in-transit cold treatment is frequently required in the international trade of apples potentially affected by Mediterranean fruit fly (Ceratitis Capitata), despite the existence of potentially less costly and equally effective alternative means of applying the same treatment, in particular ‘cold storage’. We then try to understand why these alternative methods do not emerge spontaneously or become more widespread. We suggest that technical aspects and their respective costs are not always the most important factors. Transaction costs may also come into play. In accordance with ‘institutional path dependence’ literature, we suggest that the negotiation costs a country has to bear in order to encourage its trading partners to adopt an alternative treatment are high enough for it to be preferable to continue using the current solution, despite its higher adoption cost.


2013 ◽  
Vol 106 (6) ◽  
pp. 2336-2340 ◽  
Author(s):  
Guy J. Hallman ◽  
Scott W. Myers ◽  
Gustavo Taret ◽  
Emily A. Fontenot ◽  
Marc J. B. Vreysen

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 48 ◽  
Author(s):  
Farhan Al-Behadili ◽  
Vineeta Bilgi ◽  
Junxi Li ◽  
Penghao Wang ◽  
Miyuki Taniguchi ◽  
...  

Cold treatment at 0.0 °C with different exposure durations (0–12 days) was applied to the Mediterranean fruit fly Ceratitis capitata (Wiedemann) fed on a lab diet. The examined developmental stages were early eggs (<6 h), late eggs (>42 h), first instar, second instar and third instar larvae. Pupation, adult emergence and sex ratios of survived flies were investigated to study the C. capitata responses to this low temperature treatment. Our results showed that exposure time at low temperature has a clear effect on pupation and adult emergence. Based on pupation ratios, the first and third instar are the most cold tolerant stages, with LT99 = 7.3 for both of them. Cold tolerance at both stages are very close and no significant differences were detected. There were no significant differences on C. capitata sex ratios among different stages after treatment. This study improves our understanding of C. capitata responses to cold treatment, which may assist in the improvement of the current treatment strategies to control this destructive horticulture pest species.


2011 ◽  
Vol 104 (4) ◽  
pp. 1174-1179 ◽  
Author(s):  
Tim G. Grout ◽  
Peter R. Stephen ◽  
John Henry Daneel ◽  
Vaughan Hattingh

Author(s):  
S. O. Atanu ◽  
B. C. Echezona ◽  
K. I. Ugwuoke

Background and Objective: Citrus is one of the most important and among the top ten widely cultivated fruits in Nigeria. It is produced more in the Guinea and Sudan Savanna zones of the country with Benue State having the highest annual production. In the South of Savanna region of Africa, particularly in Nigeria; despite the economic, nutritional and health benefits of citrus, limited research work has been carried out on the identification and control of fruit flies of economic importance to the crop. The objectives of this study are to identify and determine the abundance of the fruit fly species responsible for fruit drop of citrus in Benue State, Nigeria. Materials and Methods: Fruit fly identification was done through fruit culture experiment carried out in the College of Agronomy Teaching and Research Farm, Federal University of Agriculture, Makurdi in October 2014 and October 2015.The experiment was a 2 x 3 factorial in a completely randomized design with four replications. The two factors were Zones (Zone A and B) and Varieties (Ibadan Sweet, Valencia and Washington Navel). Ten naturally infested orange fruits from four randomly selected citrus trees of each variety in each zone were weighed and placed in each plastic rearing box with dimension 39 x 27 x 26 cm containing sterilized moist soil securely covered with 1 mm mesh net for pupation and adult insect emergence. Emerged adults were killed using Mobil insecticide (Cyphenothrin), counted, sexed and stored in specimen bottles with 70% alcohol for preservation and later identification. Results: Fruit fly species identified from citrus fruit culture were: Bactrocera invadens (Drew), Ceratitis capitata (Weid) and Dacus bivittata (Biggot).  Bactrocera invadens were the most abundant species and accounted for 63.70% in Washington navel and 63.10% in Valencia in 2014 and 2015 respectively. The varieties showed no significant differences (p>0.05) on the abundance of Ceratitis capitata and Dacus bivittata in 2014. In 2015 however, Ibadan Sweet variety showed significant difference (p < 0.05) on the abundance of Ceratitis capitata (28.30%) when compared with other varieties (15.8%) each. Conclusion: Fruit fly species responsible for citrus fruit drop in Benue State were Bactrocera invadens (Drew), Ceratitis capitata (Weid) and Dacus bivittata (Biggot) with Bactrocera invadens (Drew) recorded as the most abundant species.


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