Assessing New Tools for Management of the Pepper Weevil (Coleoptera: Curculionidae) in Greenhouse and Field Pepper Crops

2020 ◽  
Vol 113 (4) ◽  
pp. 1903-1912 ◽  
Author(s):  
Roselyne M Labbé ◽  
Dana Gagnier ◽  
Rebecca Rizzato ◽  
Amanda Tracey ◽  
Cara McCreary
Keyword(s):  
Integrated Management ◽  
Mineral Oil ◽  
Positive Control ◽  
Kaolin Clay ◽  
Anthonomus Eugenii ◽  
Spray Tower ◽  
Important Pest ◽  
Pepper Weevil ◽  
Fruit Abortion ◽  
Adult Weevil

Abstract The pepper weevil, Anthonomus eugenii Cano, is an economically important pest of field and greenhouse pepper crops in North America. In this study, a series of insecticides covering a broad-spectrum of insecticidal modes of action were assessed for their potential in managing the pepper weevil under laboratory and greenhouse conditions. To accomplish this, laboratory mini-spray tower and greenhouse cage trials were conducted that evaluated the efficacy of 16 conventional, reduced-risk, and microbial insecticides. In laboratory trials, adult weevils were sprayed with insecticides, placed on treated leaves within a cup cage, and were monitored for their survival over 10 d. Of the 16 insecticides tested, 8 provided greater than 60% weevil control, a threshold considered necessary for including products in further greenhouse testing. In greenhouse trials, adult weevil mortality, bud and foliar damage, bud and fruit abortion, and subsequent weevil offspring emergence were measured following each of three weekly insecticide applications. The most efficacious insecticides included kaolin clay and mineral oil, which performed as well as the thiamethoxam-positive control, and incurred 70 and 55% of adult weevil mortality, respectively. Additionally, kaolin clay and mineral oil reduced offspring weevil emergence by 59 and 54%, respectively, compared with untreated controls. Despite the clear challenge that controlling this pest represents, this study has identified useful new tools for the integrated management of the pepper weevil, which may accelerate the rate at which these become available for use in greenhouse and field pepper production.

scholarly journals Isolation of native entomopathogenic fungi with potential for control of the pepper weevil, Anthonomus eugenii Cano, in Puerto Rico

2021 ◽  
Vol 101 (1) ◽  
pp. 91-106
Author(s):  
Miguel A. García-Carrucini ◽  
Víctor Cartín Leyva ◽  
Consuelo Estévez de Jensen
Keyword(s):  
Puerto Rico ◽  
Entomopathogenic Fungi ◽  
Dna Sequences ◽  
Integrated Management ◽  
Management Program ◽  
Mortality Data ◽  
Anthonomus Eugenii ◽  
Fungal Isolates ◽  
Pepper Weevil

Entomopathogenic fungi were isolated parasitizing coffee borer beetle (Hypothenemus hampei Ferrari) and banana weevils (Cosmopolites sordidus Germar) in different parts of the island of Puerto Rico to be identified and examined for their pathogenicity on pepper weevil (Anthonomus eugenii Cano). Fungi were isolated and purified in acidulated potato dextroseagar (PDA) in the laboratory of the Plant Disease Clinic at the Agricultural Experiment Station, Juana Díaz. Seven fungal isolates were obtained from the municipality of Comerío, and one from the municipality of Adjuntas. Morphology, DNA sequences of different genetic regions of interest, and microsatellites were used for identification of fungal isolates. Two of the eight isolates were identified as Beauveria bassiana, three as Beauveria caledonica, two as Paecilomyces fumosorosea and one as Paecilomyces lilacinum. Pathogenicity tests were conducted in vitro using conidia suspension (1 x 106 conidia/mL). Insects were inoculated by immersion (10 sec) in the conidia suspension. Daily mortality data was taken (TL50, TL90) and the mean of the treatments were determined. All the fungal species were pathogenic to A. eugenii. The most effective treatments were: P. fumosorosea (Pae1) and B. bassiana (Bb1 & Bb3) with TL50 of 2.39, 2.53 and 2.56 days, respectively, while TL50 for the control was 6.56. A 100% mortality for treatments occurred between the fourth and sixth day compared to control, which reached it in 12 days. These isolates have the potential to be used on an integrated management program for the control of the pepper weevil.

Natural enemies ofAnthonomus eugenii(Coleoptera: Curculionidae) in Canada

2018 ◽  
Vol 150 (3) ◽  
pp. 404-411
Author(s):  
R.M. Labbé ◽  
R. Hilker ◽  
D. Gagnier ◽  
C. McCreary ◽  
G.A.P. Gibson ◽  
...  
Keyword(s):  
Biological Control ◽  
United States Of America ◽  
Natural Enemy ◽  
Life Stages ◽  
Southern Ontario ◽  
Anthonomus Eugenii ◽  
Pepper Fruit ◽  
Important Pest ◽  
Infested Field ◽  
Pepper Weevil

AbstractThe pepper weevil,Anthonomus eugeniiCano (Coleoptera: Curculionidae), is the most important pest of pepper (CapsicumLinnaeus; Solanaceae) crops in North America. Native to Mexico, the southern United States of America, and Central America, it is intercepted in Canada when peppers are imported to supplement domestic production. Given the proximity of greenhouse and field production to packing facilities, this pest poses a serious risk to the cultivation of peppers in Canada. Once established, it is difficult to control because immature stages of the weevil are protected within the pepper fruit. As such, chemical control targeting these life stages is not effective, and other strategies, including biological control, may prove useful. To explore the potential for biological control options to manage the pepper weevil in areas at risk in Canada, natural enemy surveys were conducted in southern Ontario following the reports of transient, localised field populations in 2016. Parasitoids belonging to three Hymenoptera families including Pteromalidae (Jaliscoa hunteriCrawford,Pteromalus anthonomiAshmead), Eupelmidae (Eupelmus pulchricepsCameron), and Braconidae (NealiolusMason species,BraconFabricius species) were reared from infested field-collected pepper fruits. Together, these new natural enemy records could facilitate the exploration and development of novel agents for the biological control of the pepper weevil.

A systemic bioassay to determine susceptibility of the pepper weevil, Anthonomus eugenii Cano (Coleoptera: Curculionidae) to cyantraniliprole and thiamethoxam

2015 ◽  
Vol 72 ◽  
pp. 16-21 ◽  
Author(s):  
Rafael Caballero ◽  
David J. Schuster ◽  
Hugh A. Smith ◽  
Jozer Mangandi ◽  
Héctor E. Portillo
Keyword(s):  
Anthonomus Eugenii ◽  
Pepper Weevil

scholarly journals Repellent Effect and Insecticidal Activities ofBridelia ferruginea,Blighia sapida, andKhaya senegalensisLeaves Powders and Extracts againstDinoderus porcellusin Infested Dried Yam Chips

2017 ◽  
Vol 2017 ◽  
pp. 1-18 ◽  
Author(s):  
Laura Yêyinou Loko ◽  
Obédatou Alagbe ◽  
Elie A. Dannon ◽  
Benjamin Datinon ◽  
Azize Orobiyi ◽  
...  
Keyword(s):  
Integrated Management ◽  
Botanical Insecticides ◽  
Fumigant Toxicity ◽  
Repellent Effect ◽  
Bridelia Ferruginea ◽  
Minimal Weight ◽  
Plant Powders ◽  
Important Pest ◽  
Synthetic Pesticide ◽  
Blighia Sapida

Dinoderus porcellusis considered as the most important pest of stored yam chips and compounds extracted from plants can be used for its control. The present study aimed to test the insecticidal and repellent activities of powders and extracts of leaves ofBridelia ferruginea,Blighia sapida, andKhaya senegalensisagainstD. porcellus. The efficacy of plant powders was compared with the synthetic pesticide Antouka (Permethrin 3 g/kg + pirimiphos 16 g/kg). The results of the experiment revealed that all plant powders were effective as repellents. Antouka was more effective as insecticidal than the plant powders and minimal weight loss was observed withB. sapidaat 2%. Among treatments, propanol extract ofK. senegalensisat 5% was found to elicit the highest repellent effect onD. porcellus. The LC50results revealed that the acetone extract ofK. senegalensisis the most toxic (0.29 μL/insect) to the pest, while the propanol extract ofB. ferrugineaat 5% exhibited strong fumigant toxicity againstD. porcellus, with 88.89% of pest mortality at 160 μL/L air. The findings from the current work proved that plant powders and extracts of the three plants are sources of botanical insecticides which may be used in the integrated management ofD. porcellus.

scholarly journals Performance of baited traps for integrated management of Hypothenemus hampei Ferrari (Coleoptera: Scolytinae) in a conilon coffee crop in Rondônia State, Brazil

2020 ◽  
Vol 13 ◽  
pp. e913
Author(s):  
Moisés Santos De Souza ◽  
José Nilton Medeiros Costa ◽  
Marcelo Curitiba Espindula ◽  
Alexandre de Almeida e Silva
Keyword(s):  
Population Control ◽  
Integrated Management ◽  
Control Area ◽  
Hypothenemus Hampei ◽  
Monitoring And Control ◽  
Coffee Plantations ◽  
Pest Monitoring ◽  
Baited Traps ◽  
Two Factors ◽  
Important Pest

Hypothenemus hampei (Ferrari) is an important pest worldwide. Methods of monitoring and control using baited traps are not yet established in coffee plantations in the Brazilian Amazon. The objective of this work was to record, for the first time, results of the use of baited traps in coffee plantation located in Rondônia, in favor of the control and pest monitoring. Two areas were delineated: i) with use of the traps baited with  ethanol/methanol (1:1), treatment; ii) without use of traps (control). For comparison of results, two factors were considered: damaged fruits (damage by H. hampei) and infested (H. hampei inside of fruits). It was observed higher levels of damaged fruits per plants in the control area compared to the area where traps were used. The density of the pest population per plants found on infested fruits was also higher in the control area compared to the trapping area. These results suggest that traps baited with ethanol/methanol (1:1) are an effective alternative for population control of pest also in the coffee plantations in Rondônia, where there is no such management with this tool. Use of the baited traps to monitor the insect accurately revealed that the flight stimulus of the colonizing females is influenced by values of the environmental variables. According to the results, colonizing females are more active in the afternoon. Therefore, in order to achieve more efficient control of H. hampei, the best time to apply control agents is between 2:00 pm and 6:00 pm.

Pepper Weevil, Anthonomus eugenii Cano (Coleoptera: Curculionidae)

2008 ◽  
pp. 2782-2784
Author(s):  
J. Howard Frank ◽  
J. Howard Frank ◽  
Michael C. Thomas ◽  
Allan A. Yousten ◽  
F. William Howard ◽  
...  
Keyword(s):  
Anthonomus Eugenii ◽  
Pepper Weevil

scholarly journals NEW RECORDS OF NATURAL ENEMIES OF THE PEPPER WEEVIL, ANTHONOMUS EUGENII CANO (COLEOPTERA: CURCULIONIDAE), IN PUERTO RICO

1969 ◽  
Vol 87 (1-2) ◽  
pp. 69-72 ◽  
Author(s):  
Eduardo Correa-Galíndez ◽  
Arístides Armstrong ◽  
Carlos Cruz ◽  
Edwin Abreu
Keyword(s):  
Puerto Rico ◽  
Natural Enemies ◽  
New Records ◽  
Parasitoid Species ◽  
Anthonomus Eugenii ◽  
Pepper Weevil

Two parasitoid species (Catolaccus hunteri and Urosigalphus mexicanus) were recovered from the larvae of A. eugenii from samples collected at Lajas, Puerto Rico.

scholarly journals Insecticidal Activity against Bemisia Tabaci Biotype B of Peel Essential Oil of Citrus sinensis var. pear and Citrus aurantium Cultivated in Northeast Brazil

2010 ◽  
Vol 5 (11) ◽  
pp. 1934578X1000501
Author(s):  
Nicolle de Carvalho Ribeiro ◽  
Claudio Augusto Gomes da Camara ◽  
Flávia de Souza Born ◽  
Herbert Álvaro Abreu de Siqueira
Keyword(s):  
Bemisia Tabaci ◽  
Citrus Sinensis ◽  
Integrated Management ◽  
Positive Control ◽  
Northeast Brazil ◽  
Citrus Aurantium ◽  
Bitter Orange ◽  
Oil Concentration ◽  
Biotype B ◽  
Bemisia Tabaci Biotype B

The fumigant action of peel essential oils of Citrus sinensis var. pear (pear orange = PO) and C. aurantium (bitter orange = BO) from the northeast of Brazil were evaluated against Bemisia tabaci biotype B and compared with eugenol as a positive control. The oil concentration in the PO at 8.5 μL/L of air caused 97% mortality, while the oil concentration of BO at 9.5 μL/L of air caused 99% mortality. However, the LC50 estimates for both oils (LC50 = 3.80 μL/L of air for PO and LC50 = 5.80 μL/L of air for BO) did not differ from each other, but they did when compared with eugenol (LC50 = 0.20 μL/L of air). Regarding their effects on oviposition, the Citrus oils showed concentration-response dependence, reducing the number of eggs as the concentration increased, which was not observed for eugenol. The minimum concentrations of the oils that caused a significant reduction in the egg lay were 3.5 and 7.0 μL/L of air for BO and PO, respectively. These results suggest that oils from PO and BO peels may be promising as models to develop new insecticides that might be applied into the integrated management of whiteflies.

Paving Asphalt Products Exhibit a Lack of Carcinogenic and Mutagenic Activity

2011 ◽  
Vol 30 (5) ◽  
pp. 492-497 ◽  
Author(s):  
Katy O. Goyak ◽  
Richard H. McKee ◽  
Gary D. Minsavage ◽  
Claude McGowan ◽  
Wayne C. Daughtrey ◽  
...  
Keyword(s):  
Vacuum Distillation ◽  
Mutagenic Activity ◽  
Mineral Oil ◽  
Positive Control ◽  
Skin Carcinogenesis ◽  
Test Method ◽  
Mutagenic Potential ◽  
Induced Tumors ◽  
Paving Asphalt ◽  
C3h Mice

A paving asphalt and a vacuum residuum (derived from crude oil by atmospheric and subsequent vacuum distillation and used as a blend stock for asphalt) were tested in skin carcinogenesis assays in mice and in optimized Ames assays for mutagenic activity. In the skin cancer tests, each substance was applied twice weekly for 104 weeks to the clipped backs of groups of 50 male C3H mice. Neither the paving asphalt nor the vacuum residuum (30% weight/volume and 75% weight/weight in US Pharmacopeia mineral oil, respectively) produced any tumors. The positive control benzo[a]pyrene (0.05% w/v in toluene) induced tumors in 46 of 50 mice, demonstrating the effectiveness of the test method. Salmonella typhimurium tester strain TA98 was used in the optimized Ames assay to evaluate mutagenic potential. Dimethylsulfoxide (DMSO) extractions of the substances were not mutagenic when tested up to toxic limits. Thus, under the conditions of these studies, neither the paving asphalt nor the vacuum residuum was carcinogenic or mutagenic.

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