Cold Treatment of Ceratitis capitata (Diptera: Tephritidae) in Oranges Using a Larval Endpoint

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

scholarly journals In-transit cold treatment: a case of institutional path dependence

2020 ◽  
Vol 16 (4) ◽  
pp. 463-479
Author(s):  
Pasquale Lubello ◽  
Jean-Marie Codron
Keyword(s):  
Path Dependence ◽  
Ceratitis Capitata ◽  
Cold Treatment ◽  
Fruit Fly ◽  
Variable Number ◽  
Alternative Methods ◽  
Trading Partners ◽  
Alternative Means ◽  
Food Commodities ◽  
In Transit

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.

scholarly journals Cold Response of the Mediterranean Fruit Fly (Ceratitis capitata) on a Lab Diet

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 48 ◽  
Author(s):  
Farhan Al-Behadili ◽  
Vineeta Bilgi ◽  
Junxi Li ◽  
Penghao Wang ◽  
Miyuki Taniguchi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ceratitis Capitata ◽  
Sex Ratios ◽  
Cold Treatment ◽  
Adult Emergence ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Pest Species ◽  
Cold Response ◽  
The Mediterranean

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.

scholarly journals Cold Response of the Mediterranean fruit fly (Ceratitis capitata) in the Lab Diet

2018 ◽  
Author(s):  
Farhan jasim Al-behadili
Keyword(s):  
Ceratitis Capitata ◽  
Sex Ratios ◽  
Cold Treatment ◽  
Treatment Strategies ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Pest Species ◽  
Cold Response ◽  
Cold Tolerant ◽  
The Mediterranean

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 lab diet. The examined developmental stages were early eggs (<6 hr) (E.E), late eggs (>42 hr)(L.E),first instar (1st ), second instar(2nd ) and third instar larvae (3rd ). 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 based on pupation ratios, the 3rd instar is the most cold tolerant stage with LT99=7.36 days. The second most cold tolerant stage is the 1st instar with LT99=7.33 days. Cold tolerance at both two stages are very close, so they should be paid attention during the cold treatment. 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

Disinfestation of Western Australian Granny Smith apples by cold treatment against the egg and larval stages of the Mediterranean fruit fly (Ceratitis capitata (Wied.))

1976 ◽  
Vol 16 (79) ◽  
pp. 280 ◽  
Author(s):  
AN Sproul
Keyword(s):  
Ceratitis Capitata ◽  
Cold Treatment ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Commercial Practice ◽  
Larval Stages ◽  
Experimental Programme ◽  
The Mediterranean ◽  
Eggs And Larvae ◽  
Western Australian

In a series of tests during 1974 export grade Granny Smith apples artificially infested with eggs, young and old larvae of Mediterranean fruit fly (Ceratitis capitata (Wied.)) were cold stored at 0.5�C � 0.5�C for 14 days and at 1.5�C � 0.5�C for 16 days in simulated commercial conditions. No survivors were recorded from tests in which an estimated total of 340,200 eggs and larvae were treated. No injury to the fruit was caused by the treatments. Apples are held in cool stores after harvest at these temperatures as normal commercial practice. The experimental programme demonstrated that such commercial treatments can be applied to meet export requirements to obtain entry to quarantine areas.

Colchicine Uptake and Binding by Human Platelets

1975 ◽  
Vol 34 (03) ◽  
pp. 780-794 ◽  
Author(s):  
Dianne M Kenney ◽  
Francis C Chao ◽  
James L Tullis ◽  
Gail S Conneely
Keyword(s):  
Time Dependence ◽  
Incubation Period ◽  
Binding Sites ◽  
Silicone Oil ◽  
Cold Treatment ◽  
Human Platelets ◽  
Temperature Dependent

SummaryThe uptake and binding of antimitotic alkaloid colchicine has been demonstrated in washed preparations of human platelets. A silicone oil technique was adapted so that both uptake and binding of 14C-colchicine were examined in the same platelet preparations. The time dependence and amount of colchicine taken up and bound by different platelet preparations during a 90 to 120 min incubation period were highly reproducible. Both colchicine uptake and binding by intact platelets, and colchicine binding by preparations of lysed platelets were specific and temperature dependent. Colchicine uptake was slowly reversible. Magnesium and GTP enhanced colchicine binding by lysed platelet preparations but calcium decreased binding.Exposure of platelets to either cold (4° C) or to thrombin, which disrupt platelet microtubules, produced significant increases in colchicine uptake and binding. The thrombin effect was maximal at 37° C and resulted in a greater increase in uptake and binding than that produced by either cold treatment alone or, by cold treatment followed by incubation with thrombin at 37° C. The amount of increase in uptake and binding produced by thrombin was independent of both thrombin (1–5 Units/109 platelets) and colchicine concentrations (1–50 × 10−6M).It is postulated that thrombin may initiate the formation, or make available, colchicine binding sites (microtubule subunits) within platelets.

Cold treatment of tool steels

2012 ◽  
Vol 67 (2) ◽  
pp. 106-110
Author(s):  
P. Stratton
Keyword(s):  
Cold Treatment ◽  
Tool Steels
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