Indian sweetpotato weevil, euscepes postfasciatus, is the predominant species. Using a life table, one can compare the growth potential of an insect on different host plants, under different environmental conditions 1,2,3. 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. Jun 01, 2009 the west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. High population density and egg cannibalism reduces the efficiency of massrearing in euscepes postfasciatus coleoptera. Aug 01, 2014 the preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l.
This page was last edited on 16 december 2019, at 12. This insect is an experimentally tractable pest insect that can easily be reared on a natural diet of sweet potato. At optimal temberature range of 2730 celssius weevil completes it life cycle in 33 days. Insect pests of sweetpotato are best controlled by integrated pest management ipm approaches. Irradiation as a methyl bromide alternative for postharvest control of. However, rs 1methyl2nitro3 tetrahydro3furylmethyl guanidine granular aqueous solvent and 1,2bis 3methoxycarbonyl2thioureido benzene paste as agricultural chemical components the combination of is excluded. Euscepes postfasciatus and cylas formicarius elegantulus. Stemcatslarval developmental studies in cardiac function. Pdf the west indian sweet potato weevil euscepes postfasciatus fairmaire is a troublesome pest insect of sweet.
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. The west indian sweetpotato weevil euscepes postfasciatus fairmaire is a major pest of the sweet potato ipomoea batatas l. Understanding the population ecology is essential in the planning of an eradication program. Euscepes postfasciatus fairmaire the \vest indian sweetpotato weevil. In the state of hawaii, most sweetpotato production is on the east coast of hawaii island, where the purplefleshed landrace okinawan is grown and. Cloning, sequencing and molecular phylogenetic analyses of the bacterial genes demonstrated that e. Euscepes postfasciatus is the most important pest of sweetpotato in the caribbean and central america. Intensive resistance by females before copulation induces. Florida entomologist an international journal for the americas has published reports of research on insects and other arthropods since 1917.
A life table is a convenient and comprehensive method for summarizing the survival and reproductive potential of a population. Sexual differences in distress sound in the west indian. Aug 27, 2016 sweetpotato ipomea batatans is a food crop of global significance. 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 sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea batatas. A pest control method comprising applying at least one pesticide component to a plant. Cn1845671a menthol propylenglycolcarbonate and analogs. C t q e irradiation as a methyl bromide alternative for. 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.
Costbenefit analyses are essential to support management planning and decisions before launching any pest control program. Therefore, an alternative sterilization source to gamma rays, such as xrays, needs to be developed. If the address matches an existing account you will receive an email with instructions to reset your password. Adaptation to artificial rearing during successive generations in the. Effect of longterm massrearing on mating performance in. Tissuecultured, virustested tc plantlets of sweetpotato ipomoea batatas var. Damage is similar to sweet potato weevi, cylas formicarius. Biology and management of the west indian sweet potato weevil, euscepes postfasciatus.
We examined the potential presence of a bacterial endosymbiont in the pest weevil. We investigated the effects of this disease on the longevity. 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. Effects of high co2 on mating success, mating duration. Handbook of vegetable pests john capinera download. 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. Irradiation as a methyl bromide alternative for postharvest control of omphisa anastomosalis lepidoptera. Because the agestage, twosex life table can describe stage differentiation and include both sexes, it can precisely reveal. Curculionidae west indian sweet potato weevil, scarabee. The west indian sweet potato weevil, euscepes postfasciatus fairmaire, as well as. Pdf irradiation as a methyl bromide alternative for. Pdf ultraviolet lightemitting diode uv led trap the west indian.
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. Integrated pest management of sweetpotato in the caribbean. The west indian sweetpotato weevil euscepes postfasciatus fairmaire coleoptera. 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. Although sterile insect techniques have been used against this pest in a demonstration experiment on kume island ohno et al. In order to improve massrearing for an eradication program employing the sterile insect technique sit, optimal population density of e. 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. Moisture during egg incubation adversely affects hatching. Jp2007246495a method for controlling disease and insect. Menthol propylene carbonate and the like as well as compositions comprising such compounds as insect repellents. Ultraviolet lightemitting diode uv led trap the west. Sweet potato pest management, a global perspective. An emerging pest in jamaica is the sweetpotato leaf beetle. General information about euscepes postfasciatus eusppo.
Sweet potato resistance to euscepes postfasciatus coleoptera. 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. Weevils were randomly selected from rearing containers at opppc in may 2012 to. Effects of xray irradiation on male sperm transfer ability and fertility in the sweetpotato weevils euscepes postfasciatus coleoptera. Additional alternate hosts of the sweetpotato weevils. Pdf the west indian sweet potato weevil, euscepes postfasciatus, is a notorious pest of the sweet potato, ipomoea. 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. Key word, west indian sweet potato weevil, euscepes postfasciatus. These results provide promise for improved sweetpotato weevil detection and suppression in mass trapping programs. The physical properties of radiation are different between gamma rays and x. Initial field trial using a low dose of male lure 12. An eradication project has been initiated in the southwestern island of japan to contain the west indian sweetpotato weevil, euscepes postfasciatus. The storage roots and foliage of crop are attacked by a wide range of pests and diseases. A sweetpotato ipm program, developed under ipm crsp collaborative research.
The sweetpotato weevils in hawaii their biology and control core. 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. 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. Effects of xray irradiation on male sperm transfer. Wireworms, cucumber beetles, white grubs, flea beetles, and various foliar pests also may occur.
The bacterial 16s rrna gene and groel gene were detected by pcr from the insects. 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. In particular, applications of the sterile insect technique sit are often prevented by the projected economic burden associated with rearing processes. Pdf nardonella endosymbiont in the west indian sweet potato. 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.
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. Moisture treatment exhibited significant undesirable effects on hatching reduction of hatchability, delay of hatching, and increase of the variance of hatching date compared to. High population density and egg cannibalism reduces the. The preferences of the west indian sweet potato weevil, euscepes postfasciatus fairmaire, to tubers of sweet potato, ipomoea batatas l. Parasite on tuburous root of convolvulaceae plants such as sweet potato. 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.
West indian sweet potato weevil euscepes postfasciatus fairmaire, 1849. Files are available under licenses specified on their description page. Cylas formicarius fabricius, euscepes postfasciatus fairmaire, cylas brunneus fabricius and cylas puncticollis boheman. E in may 2006 and maintained at 25 1c under a photoperiod of 14 l. Longevity in drosophila melanogaster and its ebony mutant in the absence of food 25. The male lure that is typically used for sweetpotato weevil monitoring in sweetpotato fields is a rubber septum.
A new distribution map is provided for euscepes postfasciatus fairmaire. This has had a deep impact on the technique development and its use on insects with long larval periods, as often seen. Curculionidae is a major pest of sweetpotato ipomoea batatas l. Nardonella endosymbiont in the west indian sweet potato. Other readers will always be interested in your opinion of the books youve read.
Sweetpotato ipomea batatans is a food crop of global significance. West indian sweet potato weevil, euscepes postfasciatus. The physical properties of radiation are different between gamma rays and xrays. Euscepes postfasciatus fairmaire, 1849 i c b west indian sweetpotato weevil euscepes tonsa chevrolat, l. Approximating optimal release in a deterministic model for. Population dynamics of the west indian sweetpotato weevil. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. All structured data from the file and property namespaces is available under the creative commons cc0 license. Green light synergistally enhances male sweetpotato weevil. 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.
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. Demographic comparison of sweetpotato weevil reared on a. 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. Pdf effects of xray irradiation on male sperm transfer.
330 1243 1353 473 334 103 294 1417 321 150 705 351 1102 1494 752 760 609 1168 188 845 109 1394 1469 630 1279 53 1552 531 1196 1006 772 651 298 1147 574 1137 452 626 274 1257 1356 623 1087 1451 1448 220 485