Initial field trial using a low dose of male lure 12. We compared the egghatching of euscepes postfasciatus fairmaire with and without moisture treatment to test whether moisture is necessary during egg incubation when a large number of eggs are gathered into a mass. Pdf irradiation as a methyl bromide alternative for. Doseresponse tests indicated that the most radiotolerant stage occurring in roots was the pupa of sweetpotato vine borer, omphisa anastomosalis guenee, and the adult of west indian sweetpotato weevil, euscepes postfasciatus. If the address matches an existing account you will receive an email with instructions to reset your password. Effects of xray irradiation on male sperm transfer. C t q e irradiation as a methyl bromide alternative for. Adults parent were released in a plastic box containing tubers of sweet potato cultivars and maintained for 5 d, after which the adults on each. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. An eradication project has been initiated in the southwestern island of japan to contain the west indian sweetpotato weevil, euscepes postfasciatus. Euscepes postfasciatus fairmaire the \vest indian sweetpotato weevil. The number of west indian sweet potato weevils, euscepes postfasciatus, being massreared in a facility for use in sterile insect technique sit eradication programs has undergone a drastic reduction. Aug 27, 2016 sweetpotato ipomea batatans is a food crop of global significance.
Key word, west indian sweet potato weevil, euscepes postfasciatus. In order to improve massrearing for an eradication program employing the sterile insect technique sit, optimal population density of e. Wireworms, cucumber beetles, white grubs, flea beetles, and various foliar pests also may occur. Euscepes postfasciatus fairmaire, 1849 i c b west indian sweetpotato weevil euscepes tonsa chevrolat, l. Cn1845671a menthol propylenglycolcarbonate and analogs. Biology and management of the west indian sweet potato weevil, euscepes postfasciatus. Stemcatslarval developmental studies in cardiac function.
Ultraviolet lightemitting diode uv led trap the west. Tissuecultured, virustested tc plantlets of sweetpotato ipomoea batatas var. Effects of xray irradiation on male sperm transfer ability and fertility in the sweetpotato weevils euscepes postfasciatus coleoptera. Approximating optimal release in a deterministic model for. Euscepes postfasciatus is the most important pest of sweetpotato in the caribbean and central america. Intensive resistance by females before copulation induces. Adaptation to artificial rearing during successive generations in the. Population dynamics of the west indian sweetpotato weevil. The west indian sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea batatas.
Moisture during egg incubation adversely affects hatching. The male lure that is typically used for sweetpotato weevil monitoring in sweetpotato fields is a rubber septum. Effects of high co2 on mating success, mating duration. Other readers will always be interested in your opinion of the books youve read. Euscepes postfasciatus and cylas formicarius elegantulus. Green light synergistally enhances male sweetpotato weevil. Insect pests of sweetpotato are best controlled by integrated pest management ipm approaches. The selective pressures under massrearing conditions are likely to be very different from those of wild ones.
Additional alternate hosts of the sweetpotato weevils. A pest control method comprising applying at least one pesticide component to a plant. Effect of longterm massrearing on mating performance in. The preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l. Jul 27, 2018 gamma radiation from isotopic sources has been used in sterile insect technique sit programs worldwide, but it might be difficult to continue using these sources in future sit programs because of social issues. In the state of hawaii, most sweetpotato production is on the east coast of hawaii island, where the purplefleshed landrace okinawan is grown and. Handbook of vegetable pests john capinera download. Pdf effects of xray irradiation on male sperm transfer.
Although sterile insect techniques have been used against this pest in a demonstration experiment on kume island ohno et al. Irradiation studies were conducted with three sweet potato, ipomoea batatas l. Demographic comparison of sweetpotato weevil reared on a. Parasite on tuburous root of convolvulaceae plants such as sweet potato. Understanding the population ecology is essential in the planning of an eradication program. Download pdf 343 kb abstract laboratory and field studies of food preferences and alternate hosts were conducted with the sweetpotato weevils cylas formicarius elegantulus summers and euscepes posfasciatus fairmairc. The storage roots and foliage of crop are attacked by a wide range of pests and diseases. All structured data from the file and property namespaces is available under the creative commons cc0 license. This has had a deep impact on the technique development and its use on insects with long larval periods, as often seen. Sweet potato pest management, a global perspective. Curculionidae west indian sweet potato weevil, scarabee. Information is given on the geographical distribution in africa, madeira, asia, amami islands, japan, okinawa, australasia and pacific islands, caroline islands, cook islands, fiji, hawaii, mariana islands, new caledonia, new.
Information about euscepes postfasciatus diagnosis, including distribution and treatment advice. Cloning, sequencing and molecular phylogenetic analyses of the bacterial genes demonstrated that e. The physical properties of radiation are different between gamma rays and x. The west indian sweet potato weevil, euscepes postfasciatus fairmaire is a serious pest of sweet potatoes in the caribbean and central america, california and hawaii. Damage is similar to sweet potato weevi, cylas formicarius.
Jun 01, 2009 the west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. Nardonella endosymbiont in the west indian sweet potato. The west indian sweet potato weevil, euscepes postfasciatus fairmaire, as well as. Because the agestage, twosex life table can describe stage differentiation and include both sexes, it can precisely reveal.
Menthol propylene carbonate and the like as well as compositions comprising such compounds as insect repellents. E in may 2006 and maintained at 25 1c under a photoperiod of 14 l. West indian sweet potato weevil euscepes postfasciatus fairmaire, 1849. The objectives of field trials conducted at the kula agricultural park, maui, hi, were to compare yield and pest resistance of 1 okinawan obtained from a commercial c field with tc. Aug 01, 2014 the preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l. Jp2007246495a method for controlling disease and insect. The bacterial 16s rrna gene and groel gene were detected by pcr from the insects. Longevity in drosophila melanogaster and its ebony mutant in the absence of food 25. The sweetpotato weevils in hawaii their biology and control core. The physical properties of radiation are different between gamma rays and xrays. Sweet potato resistance to euscepes postfasciatus coleoptera. General information about euscepes postfasciatus eusppo. At optimal temberature range of 2730 celssius weevil completes it life cycle in 33 days. Integrated pest management of sweetpotato in the caribbean.
An emerging pest in jamaica is the sweetpotato leaf beetle. High population density and egg cannibalism reduces the efficiency of massrearing in euscepes postfasciatus coleoptera. The adult weevil is reddish brown to near black, with a compact body covered with short bristles, which are arranged in parallel rows on the abdomen. Gamma radiation from isotopic sources has been used in sterile insect technique sit programs worldwide, but it might be difficult to continue using these sources in future sit programs because of social issues. The west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. Florida entomologist an international journal for the americas has published reports of research on insects and other arthropods since 1917. Moisture treatment exhibited significant undesirable effects on hatching reduction of hatchability, delay of hatching, and increase of the variance of hatching date compared to. Pdf nardonella endosymbiont in the west indian sweet potato. Sweet potato belongs to convolvulaceae family with more than a hundred developing countries, known to cultivate sweet potato and are ranked the 5 th most essential foodstuff in over 50 of those countries and globally, 7 th amongst the entire food production, but has lesser experimental work than other staples such as potato solanum tuberosum and wheat triticum aestivum.
Effects of high co 2 on mating success, mating duration, and sperm transfer in the west indian sweet potato weevil, euscepes postfasciatus ayame nunohiro department of agro. Effects of sugarcane trash mulching on occurrences of west indian sweetpotato weevil, euscepes postfasciatus and weeds. In 1994, it became the first longpublished, refereed, natural science journal to make its content available on the internet and the first journal to use pdf for that purpose. Sweetpotato ipomea batatans is a food crop of global significance. Irradiation as a methyl bromide alternative for postharvest control of omphisa anastomosalis lepidoptera. We examined the potential presence of a bacterial endosymbiont in the pest weevil. The purpose of this interactive program is engage in authentic scientific discovery related to larval developmental studies in cardiac function, growth and innate behaviors in drosophila fruit flies too often life science is distilled into disparate facts addressing major biological concepts, but lacking purpose for learning and applying knowledge to real world contexts. Irradiation as a methyl bromide alternative for postharvest control of. This page was last edited on 16 december 2019, at 12. Pdf ultraviolet lightemitting diode uv led trap the west indian. We investigated the effects of this disease on the longevity. High population density and egg cannibalism reduces the. The west indian sweet potato weevil euscepes postfasciatus fairmaire is a troublesome pest insect of sweet potato that originally came from the caribbean, but is now expanding its distribution into the pacific islands.
Pdf the west indian sweet potato weevil euscepes postfasciatus fairmaire is a troublesome pest insect of sweet. However, rs 1methyl2nitro3 tetrahydro3furylmethyl guanidine granular aqueous solvent and 1,2bis 3methoxycarbonyl2thioureido benzene paste as agricultural chemical components the combination of is excluded. A life table is a convenient and comprehensive method for summarizing the survival and reproductive potential of a population. These results provide promise for improved sweetpotato weevil detection and suppression in mass trapping programs. Weevils were randomly selected from rearing containers at opppc in may 2012 to. Whilst these are generally well controlled in developed countries using approaches such as clean planting material and monitoring with pheromone traps to guide insecticide use, research into methods suitable for developing countries has. Sexual differences in distress sound in the west indian. A new distribution map is provided for euscepes postfasciatus fairmaire. This insect is an experimentally tractable pest insect that can easily be reared on a natural diet of sweet potato. The west indian sweet potato weevil, euscepes postfasciatus, has been maintained for over 44 generations 8 years for its eradication program in the okinawa prefectural plant protection center naha, okinawa, japan.
Indian sweetpotato weevil, euscepes postfasciatus, is the predominant species. Pdf the west indian sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea. Using a life table, one can compare the growth potential of an insect on different host plants, under different environmental conditions 1,2,3. Costbenefit analyses are essential to support management planning and decisions before launching any pest control program. In particular, applications of the sterile insect technique sit are often prevented by the projected economic burden associated with rearing processes. Therefore, an alternative sterilization source to gamma rays, such as xrays, needs to be developed. Files are available under licenses specified on their description page. Euscepes batatae waterhouse, 1849 hyperomorpha squamosa blackburn, 1885 euscepes postfasciatus, the west indian sweetpotato weevil, is a species of hidden snout weevil in the family curculionidae. Pyralidae and euscepes postfasciatus and cylas formicarius. Cylas formicarius fabricius, euscepes postfasciatus fairmaire, cylas brunneus fabricius and cylas puncticollis boheman. The sweetpotato weevil, cylas formicarius, is the most important worldwide pest, however in some caribbean nations, the west indian sweetpotato weevil, euscepes postfasciatus, is the predominant species. A sweetpotato ipm program, developed under ipm crsp collaborative research.
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