Nardonella endosymbiont in the west indian sweet potato. Pdf ultraviolet lightemitting diode uv led trap the west indian. Tissuecultured, virustested tc plantlets of sweetpotato ipomoea batatas var. Euscepes postfasciatus fairmaire, 1849 i c b west indian sweetpotato weevil euscepes tonsa chevrolat, l. Therefore, an alternative sterilization source to gamma rays, such as xrays, needs to be developed. 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. A new distribution map is provided for euscepes postfasciatus fairmaire.
E in may 2006 and maintained at 25 1c under a photoperiod of 14 l. Sweet potato pest management, a global perspective. 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. Approximating optimal release in a deterministic model for. Files are available under licenses specified on their description page. A life table is a convenient and comprehensive method for summarizing the survival and reproductive potential of a population. The west indian sweet potato weevil, euscepes postfasciatus fairmaire, as well as.
Longevity in drosophila melanogaster and its ebony mutant in the absence of food 25. An eradication project has been initiated in the southwestern island of japan to contain the west indian sweetpotato weevil, euscepes postfasciatus. In order to improve massrearing for an eradication program employing the sterile insect technique sit, optimal population density of e. Other readers will always be interested in your opinion of the books youve read. West indian sweet potato weevil, euscepes postfasciatus. 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. Menthol propylene carbonate and the like as well as compositions comprising such compounds as insect repellents.
Initial field trial using a low dose of male lure 12. The physical properties of radiation are different between gamma rays and xrays. A pest control method comprising applying at least one pesticide component to a plant. The preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l. Pyralidae and euscepes postfasciatus and cylas formicarius. This page was last edited on 16 december 2019, at 12. An emerging pest in jamaica is the sweetpotato leaf beetle. 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. Indian sweetpotato weevil, euscepes postfasciatus, is the predominant species. This insect is an experimentally tractable pest insect that can easily be reared on a natural diet of sweet potato. Irradiation studies were conducted with three sweet potato, ipomoea batatas l. Irradiation as a methyl bromide alternative for postharvest control of. Demographic comparison of sweetpotato weevil reared on a. West indian sweet potato weevil euscepes postfasciatus fairmaire, 1849.
High population density and egg cannibalism reduces the. 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. The west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. We investigated the effects of this disease on the longevity. These results provide promise for improved sweetpotato weevil detection and suppression in mass trapping programs. Integrated pest management of sweetpotato in the caribbean. Effects of high co2 on mating success, mating duration. However, rs 1methyl2nitro3 tetrahydro3furylmethyl guanidine granular aqueous solvent and 1,2bis 3methoxycarbonyl2thioureido benzene paste as agricultural chemical components the combination of is excluded. The west indian sweetpotato weevil euscepes postfasciatus fairmaire is a major pest of the sweet potato ipomoea batatas l. In particular, applications of the sterile insect technique sit are often prevented by the projected economic burden associated with rearing processes. Intensive resistance by females before copulation induces.
Cylas formicarius fabricius, euscepes postfasciatus fairmaire, cylas brunneus fabricius and cylas puncticollis boheman. Stemcatslarval developmental studies in cardiac function. 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 storage roots and foliage of crop are attacked by a wide range of pests and diseases. 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. Green light synergistally enhances male sweetpotato weevil. High population density and egg cannibalism reduces the efficiency of massrearing in euscepes postfasciatus coleoptera. Sexual differences in distress sound in the west indian. Weevils were randomly selected from rearing containers at opppc in may 2012 to. C t q e irradiation as a methyl bromide alternative for. Understanding the population ecology is essential in the planning of an eradication program. In the state of hawaii, most sweetpotato production is on the east coast of hawaii island, where the purplefleshed landrace okinawan is grown and.
A sweetpotato ipm program, developed under ipm crsp collaborative research. Effects of xray irradiation on male sperm transfer ability and fertility in the sweetpotato weevils euscepes postfasciatus coleoptera. Damage is similar to sweet potato weevi, cylas formicarius. Sweet potato resistance to euscepes postfasciatus coleoptera. The physical properties of radiation are different between gamma rays and x. 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. Additional alternate hosts of the sweetpotato weevils.
Curculionidae is a major pest of sweetpotato ipomoea batatas l. Biology and management of the west indian sweet potato weevil, euscepes postfasciatus. 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. The sweetpotato weevils in hawaii their biology and control core. 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. Moisture treatment exhibited significant undesirable effects on hatching reduction of hatchability, delay of hatching, and increase of the variance of hatching date compared to. Effects of sugarcane trash mulching on occurrences of west indian sweetpotato weevil, euscepes postfasciatus and weeds. Pdf the west indian sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea. Costbenefit analyses are essential to support management planning and decisions before launching any pest control program. 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. Because the agestage, twosex life table can describe stage differentiation and include both sexes, it can precisely reveal. Aug 01, 2014 the preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l.
Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Effects of xray irradiation on male sperm transfer. Cn1845671a menthol propylenglycolcarbonate and analogs. Florida entomologist an international journal for the americas has published reports of research on insects and other arthropods since 1917. Jun 01, 2009 the west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. The bacterial 16s rrna gene and groel gene were detected by pcr from the insects. Wireworms, cucumber beetles, white grubs, flea beetles, and various foliar pests also may occur. Cloning, sequencing and molecular phylogenetic analyses of the bacterial genes demonstrated that e. Pdf the west indian sweet potato weevil euscepes postfasciatus fairmaire is a troublesome pest insect of sweet.
General information about euscepes postfasciatus eusppo. Pdf irradiation as a methyl bromide alternative for. Euscepes postfasciatus is the most important pest of sweetpotato in the caribbean and central america. 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. The west indian sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea batatas. 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. 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.
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. 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. If the address matches an existing account you will receive an email with instructions to reset your password. Curculionidae west indian sweet potato weevil, scarabee.
Using a life table, one can compare the growth potential of an insect on different host plants, under different environmental conditions 1,2,3. Ultraviolet lightemitting diode uv led trap the west. Euscepes postfasciatus and cylas formicarius elegantulus. This has had a deep impact on the technique development and its use on insects with long larval periods, as often seen. Effect of longterm massrearing on mating performance in. Sweetpotato ipomea batatans is a food crop of global significance. Pdf nardonella endosymbiont in the west indian sweet potato. Population dynamics of the west indian sweetpotato weevil. Jp2007246495a method for controlling disease and insect. 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.
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. Key word, west indian sweet potato weevil, euscepes postfasciatus. 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. Information about euscepes postfasciatus diagnosis, including distribution and treatment advice. Although sterile insect techniques have been used against this pest in a demonstration experiment on kume island ohno et al. Insect pests of sweetpotato are best controlled by integrated pest management ipm approaches. Parasite on tuburous root of convolvulaceae plants such as sweet potato.
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. All structured data from the file and property namespaces is available under the creative commons cc0 license. At optimal temberature range of 2730 celssius weevil completes it life cycle in 33 days. Euscepes postfasciatus fairmaire the \vest indian sweetpotato weevil. Adaptation to artificial rearing during successive generations in the. 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.
1343 865 1323 294 1566 717 241 127 341 183 1253 757 240 136 436 1341 1301 290 1261 796 430 1036 1495 475 30 1422 300 846 267 338 77 412 748 430 1076 903 334 1302 1248 1196 467 693 25