Prolongation of the effective copulation period by fractionated‐dose irradiation in the sweet potato weevil, <i>Cylas formicarius</i>

Kumano, Norikuni; Kuriwada, Takashi; Shiromoto, Keiko; Haraguchi, Dai; Kohama, Tsuguo

doi:10.1111/j.1570-7458.2011.01181.x

Cited by 10 publications

(4 citation statements)

References 37 publications

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“…Fractionation, however, allows the somatic cell to recover between doses [ 67 , 68 ] and is time consuming and increases the cost of the process. Kumano et al [ 69 ] developed a fractionated-dose irradiation method in C . formicarius in which a 200-Gy dose was divided into three 67-Gy doses to achieve complete sterility while maintain normal mating performance for 12 days, which is twice that resulting from a single dose.…”

Section: Discussionmentioning

confidence: 99%

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

et al. 2022

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This paper presents the first case of the successful eradication of a Coleoptera pest species over a wide area using a combination of male annihilation technique (MAT) and sterile insect technique (SIT) application. The sweet potato weevil, Cylas formicarius, is one of the most destructive and widely distributed pests of sweet potato, Ipomoea batatas. A project to eradicate it was launched in 1994 on Kume Island, Okinawa Prefecture, Japan. The MAT application was first used from November 1994 to January 1999 to reduce the density of wild populations. The distribution and densities of weevils were assessed by trapping them and surveying infestation rates in wild hosts and sweet potatoes in the field. The C. formicarius populations were suppressed by approximately 90% and plant infestations were reduced from 9.5% to less than 0.1% by using the MAT. Then, hundreds of thousands to millions of sterile weevils were released each week (ca. 460 million in total from 1999 to 2012). As a result, based on an analysis of 12748 stems and 48749 tubers, no weevil infections were detected in the stems or tubers of sweet potato since 1997. Since 2009, almost no wild weevils were captured in traps, and in wild host and sweet potato surveys no weevils have been found in any of the 580 locations and 8833 samples since October 2011. As of 28 December, 2012, C. formicarius is considered to have been eradicated from Kume Island. This paper describes the process of eradicating C. formicarius using SIT application integrated with MAT application for the first time and discusses some of the main challenges associated with the weevil eradication campaignl.

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Section: Discussionmentioning

confidence: 99%

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

et al. 2022

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“…C. formicarius eggs found in both treatments had a 99% chance of hatching, which triggered the development of larvae and growing inside the tuber. Because of the conventional insecticide used (lambdacyhalothrin) has no ovicidal ability (Stevenson et al, 2009;Kumano et al, 2011;Wang et al, 2014). Previous research reported that only conventional insecticides with active ingredients of phenylpyrazoles, ethiprole, organophosphates, and carbamate were toxic to Hymenoptera eggs.…”

Section: Number Of C Formicarius Eggs Found In Each Tubermentioning

confidence: 99%

Efficacy of Biopesticide Be-Bas against Sweet Potato Weevils (Cylas formicarius Fabricius) in Tidal Land

Prayogo

Bayu

2019

JPTI

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In Indonesia tidal land is very wide and quite potential for sweet potatoes, but an obstacle for this cultivation is sweet potato weevil (Cylas formicarius) causes loss of 100%. This research aimed to evaluate the efficacy of biopesticide Be-Bas contains Beauveria bassiana entomopathogenic conidia to C. formicarius mortality at tidal lands. This study was conducted on June-November 2016 in South Kalimantan. The research consisted of five treatments and five replications. Results showed that the application of biopesticide Be-Bas in the planting hole and stem base was effective to cause mortality of 17 and 15 larvae per tuber, respectively. However, the application by soaking cutting was able to kill 3 larvae per tuber. The application of biopesticide Be-Bas in the planting hole and stem base were also effective to suppress the number of eggs laid by C. formicarius in the tuber, hence there was no damage found on the tuber. Meanwhile, the application of conventional insecticide was less effective because a total of 17 eggs and 3 larvae of C. formicarius were still found in each tuber. It caused tuber damage up to 17%, thus the tuber cannot be consumed. Therefore, the application of biopesticide Be-Bas in the planting hole or stem base was considered capable to suppress tubers damage caused by C. formicarius better than that of conventional insecticide.

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“…The central importance of the releasing sterile male helps populations decrease, together with other methods, helps to make the location a pest free. Sterile males during mating with females will not result in progeny, which then produce in total decreased in population in the next generation [72]. For example, radiations cause adverse effects on somatic cells and lower insect viability, which affects fertility when there is an increase in absorption.…”

Section: Open Access Freely Available Onlinementioning

confidence: 99%

The Major Sweet Potato Weevils; Management and Control: A Review

Wt¹,

Zhao²,

Amoanimaa-Dede³

et al. 2019

Entomol Ornithol Herpetol

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Sweet potato is an important food crop, grown commonly in tropical and subtropical regions, but production has been subjected to less research worldwide, compared to the major staple crops. Sweet potato weevils are the major destructive pest causing drastic yield decline and resulting in a decrease in millions of dollar annually. A wide range of management strategies in controlling sweet potato weevils includes; cultural method, chemical method, biological method, Sterile Insect Technique, soil management, Sterile Insect Release, pheromone traps, Host Plant Resistance and Integrated Pest Management. However, the chemical method is limited by larvae internal feeding, whilst the biological approach has been constraints to some point. The pheromone method has enhanced for monitoring of sweet potato weevils, but adapting to integrated pest management is most highly effective and environmentally safe to growers. This paper reviews the factors that contribute to the infestation of weevils, mode of infestation, and various control management strategies towards decreasing the infestation of weevils in the plantation of sweet potato.

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Prolongation of the effective copulation period by fractionated‐dose irradiation in the sweet potato weevil, Cylas formicarius

Cited by 10 publications

References 37 publications

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

Efficacy of Biopesticide Be-Bas against Sweet Potato Weevils (Cylas formicarius Fabricius) in Tidal Land

The Major Sweet Potato Weevils; Management and Control: A Review

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