Oviposition deterrency and deterrent stability of some oily substances against the pear psyllaCacopsylla pyri

2004 ◽  
Vol 32 (5) ◽  
pp. 479-485 ◽  
Author(s):  
F. Erler
Keyword(s):  
Oviposition Deterrency

scholarly journals AKTIVITAS INSEKTISIDA EKSTRAK BUAH CABAI JAWA (Piper retrofractum) TERHADAP Helopeltis antonii (HEMIPTERA: MIRIDAE)

2016 ◽  
Vol 21 (1) ◽  
pp. 33 ◽  
Author(s):  
GUSTI INDRIATI ◽  
DADANG DADANG ◽  
DJOKO PRIJONO
Keyword(s):  
Plant Protection ◽  
Sublethal Effect ◽  
Adult Mortality ◽  
Botanical Insecticides ◽  
Important Pest ◽  
Testing Medium ◽  
Oviposition Deterrency ◽  
Piper Retrofractum ◽  
Test Insect ◽  
Sublethal Concentrations

<p>ABSTRAK<br />Helopeltis antonii merupakan salah satu hama pada tanaman kakao,<br />teh, dan jambu mete yang menyerang pucuk dan buah dengan menusukkan<br />stiletnya untuk mengisap cairan sehingga menyebabkan kerusakan.<br />Penelitian bertujuan menguji toksisitas ekstrak buah Piper retrofractum<br />(cabai jawa) terhadap imago, pengaruh konsentrasi subletal terhadap nimfa<br />keturunan, persistensi terhadap mortalitas dan oviposisi H. antonii.<br />Penelitian dilaksanakan di Laboratorium Fisiologi dan Toksikologi<br />Serangga, Institut Pertanian Bogor dan Laboratorium Proteksi Tanaman,<br />Balai Penelitian Tanaman Industri dan Penyegar Sukabumi, mulai Mei<br />2013 sampai April 2014. Buah mentimun digunakan sebagai inang<br />pengganti untuk perbanyakan serangga uji H. antonii di laboratorium dan<br />media pengujian. Hasil penelitian menunjukkan kematian imago H.<br />antonii, akibat perlakuan ekstrak P. retrofractum 0,05-0,3%, sudah terjadi<br />pada 24 jam setelah perlakuan (JSP). Sementara itu, pada 24 dan 48 JSP<br />terjadi penurunan tingkat kematian H. antonii. Setelah 48 JSP, hanya<br />terjadi sedikit peningkatan kematian H. antonii. LC 50 dan LC 95 ekstrak P.<br />retrofractum pada 120 JSP masing-masing 0,20 dan 0,49%. Jumlah nimfa<br />keturunan yang dihasilkan pada perlakuan subletal ekstrak P. retrofractum<br />0,203% (LC 50 ) lebih sedikit dibandingkan dengan konsentrasi 0,141%<br />(LC 25 ). Ekstrak P. retrofractum yang dipajankan di bawah sinar matahari<br />hingga 5 hari masih efektif terhadap imago (mortalitas 80%), tetapi tidak<br />efektif dalam menghambat peletakan telur H. antonii. Penghambatan<br />peletakan telur terhadap imago H. antonii pada perlakuan ekstrak P.<br />retrofractum 0,98% (2 × LC 95 ) yang dipajankan di bawah sinar matahari<br />selama 0 dan 1 hari, dengan indeks penghambatan oviposisi 22,7 dan<br />23,8%. Keefektifan ekstrak P. retrofractum perlu diuji di lapangan untuk<br />menilai kelayakan dalam pengendalian H. antonii.<br />Kata kunci: insektisida botani, mortalitas, oviposisi, persistensi</p><p>ABSTRACT<br />Helopeltis antonii is cocoa, tea, and cashew nuts important pest that<br />causes damage by sucking plant sap from shoots and nuts. This study was<br />conducted to test toxicity of Piper retrofractum fruit extract on adults,<br />sublethal effect on the production nymphal progeny, and persistence<br />against mortality and oviposition of H. antonii. This study was conducted<br />at The Fisiology and Insect Toxicology Laboratory, Plant Protection<br />Departement, Bogor Agricultural University and The Plant Protection<br />Laboratory of Indonesian Industrial and Beverage Crops Research Institute<br />from Mey 2013 to April 2014. Cucumber was used as a host substitute for<br />rearing the test insect and as the testing medium. The results show that<br />adult mortality, due to the P. retrofractum leaf extract treatment 0.05-<br />0.3%, has occured at 24 hours after treatment (HAT). Meanwhile, H.<br />antonii mortality has decreased on 24 and 48 HAT. After 48 HAT, only a<br />slight increased in H. antonii mortality. LC 50 and LC 95 of P. retrofractum<br />extract at 120 HAT were 0.20 and 0.49%, respectively. The treatment at<br />sublethal concentrations (LC 25 and LC 50 ) markedly decreased nymphal<br />progeny number. P. retrofractum extract suspensions at LC 95 and 2 × LC 95<br />exposed under sunlight for 5 days were still effective against H. antonii<br />adults (80% mortality), but were not effective in females inhibiting<br />oviposition. The oviposition inhibiting activity was observed only in the<br />treatment with P. retrofractum extract at 2 × LC 95  exposed under sunlight<br />for 0 and 1 day in which the oviposition deterrency indices were 22.7 and<br />23.8% respectively. <br />Key words: botanical insecticides, mortality, oviposition, persistence</p>

scholarly journals Fumigant Toxicity and Oviposition Deterrency of the Essential Oil from Cardamom,Elettaria cardamomum, Against Three Stored—product Insects

2011 ◽  
Vol 11 (165) ◽  
pp. 1-10 ◽  
Author(s):  
Habib Abbasipour ◽  
Mohammad Mahmoudvand ◽  
Fahimeh Rastegar ◽  
Mohammad Hossein Hosseinpour
Keyword(s):  
Essential Oil ◽  
Fumigant Toxicity ◽  
Stored Product Insects ◽  
Elettaria Cardamomum ◽  
Oviposition Deterrency

scholarly journals Efficacy of Some Bioinsecticides Against Bruchidius Incarnatus (Boh.) (Coleoptera: Bruchidae) Infestation During Storage

2010 ◽  
Vol 50 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Magda Sabbour ◽  
Shadia E-Abd-El-Aziz
Keyword(s):  
Broad Bean ◽  
Adult Emergence ◽  
Choice Test ◽  
Mustard Oil ◽  
Verticillium Lecanii ◽  
Nomuraea Rileyi ◽  
Paecilomyces Fumosoroseus ◽  
Oviposition Deterrency ◽  
Microbial Agents ◽  
Mortality Percentage

Efficacy of Some Bioinsecticides AgainstBruchidius Incarnatus(Boh.) (Coleoptera: Bruchidae) Infestation During StoragePotential activities of three essential oils (cumin, clove and mustard) and of microbial agents (Paecilomyces fumosoroseus, Nomuraea rileyi, Lecanicillium (Verticillium) lecaniiand their combinations againstBruchidius incarnatus(Boh.) were evaluated. In choice test, mustard and clove oils revealed a strong repellent activity after 7 days (89% and 71%, respectively) againstB. incarnatusbeetles. Cumin oil showed the lowest repellency (47%). Accumulative mortality of beetles increased gradually with the increase of exposure intervals. Mustard oil treatment gave the highest mortality percentage of 76% after 168 h from treatment followed by clove treatment which amounted to 63% and the lowest percentage of 42.8% was recorded in case of cumin oil. Mustard oil was the most effective in enhancing the potency ofP. fumosoroseusandN. rileyiand decreased LC50of the target insect (100 and 102×107, respectively). The persistent effect of formulated mustard oil with eitherP. fumosoroseusorN. rileyifungi on foam covering gunny bags displayed several different modes of action, by reducing oviposition and adult emergence (F1) ofB. incarnatus.The oviposition was completely inhibited when stored broad bean seeds were treated with mustard oil +P. fumosoroseusduring 20, 40 and 60 days of storage. Application of mustard oil combined withP. fumosoroseuson foam covering gunny bags provided promising oviposition deterrency, toxicity and suppressingB. incarnatusinfestation, persistence and protecting broad bean seeds from beetles' infestation for 120 days during storage.

FEEDING RESPONSES OF THE WHITE PINE WEEVIL, PISSODES STROBI (PECK) (COLEOPTERA: CURCULIONIDAE), IN RELATION TO HOST RESISTANCE IN BRITISH COLUMBIA

1996 ◽  
Vol 128 (4) ◽  
pp. 539-549 ◽  
Author(s):  
Elizabeth S. Tomlin ◽  
John H. Borden
Keyword(s):  
British Columbia ◽  
Resistance Mechanism ◽  
Resistance Mechanisms ◽  
Picea Sitchensis ◽  
White Pine ◽  
Pissodes Strobi ◽  
Pine Weevil ◽  
Agar Disc ◽  
Oviposition Deterrency ◽  
White Pine Weevil

AbstractFeeding preferences of the white pine weevil, Pissodes strobi (Peck), for resistant or susceptible Sitka spruce, Picea sitchensis (Bong) Carr., were investigated using three types of laboratory bioassay. In paired-twig bioassays, fall weevils were significantly deterred from feeding up to 80% by resistant clones from four British Columbia provenances: Green Timbers, Cedarvale, Haney, and Big Qualicum. Females showed greater discrimination than males. Spring weevils were deterred from feeding by clones from the Green Timbers and Big Qualicum provenances by up to 60%. Fall males were more consistently deterred than spring males, suggesting that some host selection occurs in the fall. Females were significantly deterred from ovipositing on twigs from one clone from Big Qualicum, and stimulated by clones from Cedarvale when given a choice. Given no choice, however, they were significantly deterred from ovipositing, but not feeding by several resistant clones. In agar-disc bioassays, spring weevils were significantly deterred from feeding by bark from the provenances of Cedarvale and Big Qualicum by up to 86%. Trees from the provenances of Big Qualicum and Green Timbers caused the most consistent feeding or oviposition deterrency and may rely on this in part as a resistance mechanism. Because not all resistant clones and provenances were deterrent, we hypothesize that these trees may employ other resistance mechanisms which could be incorporated along with feeding and oviposition deterrency into breeding for resistance.

Oviposition deterrency in pineapple borer females, Thecia basilides (Lepidoptera: Lycaenidae)

1996 ◽  
Vol 21 (1) ◽  
pp. 105-106 ◽  
Author(s):  
MARC RHAINDS ◽  
GERHARD GRIES ◽  
JUAN LUIS MORALES
Keyword(s):  
Oviposition Deterrency
Sign in / Sign up

Export Citation Format

Share Document