scholarly journals AKTIVITAS EKSTRAK BIJI TANAMAN MINDI MELIA AZEDARACH (L.) TERHADAP SPODOPTERA LITURA (F.) (LEPIDOPTERA: NOCTUIDAE)

2005 ◽  
Vol 5 (1) ◽  
pp. 11-16
Author(s):  
Hamdani Hamdani
Keyword(s):  
Biological Activity ◽  
Insecticidal Activity ◽  
Spodoptera Litura ◽  
Developmental Time ◽  
Seed Extract ◽  
Melia Azedarach ◽  
The Third ◽  
First Instar ◽  
Lepidoptera Noctuidae

Activity of Melia azedarach (L.) seed extract against armyworm Spodoptera litura (F.) (Lepidoptera: Noctuidae). This study was conducted to evaluate the effectivenes and biological activity of Melia azedarach L. (Meliaceae) seed extract against armyworm, Spodoptera litura F. The first instar larvae were fed extract-treated cotton leaves for 2 days, then were maintained on untreated leaves until the third instar stage. Records were kept in regard to the larvae mortality and developmental time of surviving larvae from first instar to third instar. The result showed that Melia azedarach L. seed extract at consentration of 50 g of seeds/l of water (5%) exhibited moderate insecticidal activity against S. litura larvae (43.33 - 68.33% mortality). Addition of detergen at 0.2% to extract did not increase insecticidal activity of the extract. However, boiling seed extract at consentration of 50 g of seeds/l of water (5%) during 10 until 20 minutes increased insecticidal activity of extract (66.67 - 68.33% mortality). Generally, M. azedarach seed extract treatment did not affect  developmental time of  S. litura larvae.

scholarly journals Biological Activity of Phytochemicals from Agricultural Wastes and Weeds on Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

2021 ◽  
Vol 13 (24) ◽  
pp. 13896
Author(s):  
Analleli Jiménez-Durán ◽  
Josefina Barrera-Cortés ◽  
Laura Patricia Lina-García ◽  
Rosa Santillan ◽  
Ramón Marcos Soto-Hernández ◽  
...  
Keyword(s):  
Biological Activity ◽  
Emerging Adults ◽  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Insect Pest ◽  
Ethanolic Extract ◽  
Low Fertility ◽  
Melia Azedarach ◽  
Cedrela Odorata ◽  
Lepidoptera Noctuidae

Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) is a polyphagous insect pest native to America. Due to its capacity for adaptation and migration, it is currently located in Africa, Asia, and Oceania, where it threatens agricultural crops. The ability of S. frugiperda to develop resistance to insecticides is one of the reasons for the continuous search for more effective, low-cost, and environmentally friendly control products. In the present work, the insecticidal activity of ethanolic and hexane extracts obtained from fresh and dehydrated leaves of Piper auritum Kunth (Piperales: Piperaceae), Piper umbellatum L. (Piperales: Piperaceae), and Cedrela odorata L. (Sapindales: Meliaceae) was studied against first instar larvae of S. frugiperda. The ethanolic extracts of the dehydrated leaves of C. odorata and P. auritum presented insecticidal activity as high (100% mortality at a concentration of 92 mg/cm2) as that obtained with the positive control, Melia azedarach L. (Sapindales: Meliaceae). The GC-MS analysis of the extracts revealed the presence of phytochemicals classified mainly into the groups of monoterpenes, sesquiterpenes, diterpenes, phenylpropanoids, alcohols, and fatty acids. P. auritum grows and propagates rapidly. In addition, due to its low toxicity in mammals and non-target insects, it is a plant with the potential to be used as a botanical insecticide. The exposure of S. frugiperda larvae to low concentrations of ethanolic extract of P. auritum allowed us to observe their biological activity in the development of this insect. The LC50 was 22.1 mg/cm2. At sublethal concentrations (LC21 and LC35) the low fertility of the emerging adults was noticeable.

scholarly journals PENGARUH FRAKSI AKTIF AGLAIA HARMSIANA PERKINS (MELIACEAE) TERHADAP FISIOLOGI LARVA SPODOPTERA LITURA (F.) (LEPIDOPTERA: NOCTUIDAE)

2006 ◽  
Vol 6 (1) ◽  
pp. 1-8
Author(s):  
Eka Candra Lina ◽  
Djoko Prijono ◽  
Dadang Dadang
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Topical Application ◽  
Insecticidal Activity ◽  
Spodoptera Litura ◽  
Preparation Method ◽  
Seed Extract ◽  
Active Fraction ◽  
Relative Growth ◽  
Lepidoptera Noctuidae

The effect of active fraction Aglalia harmsiana Perkins (Meliaceae) to physiology of Spodoptera litura (F.) (Lepidoptera : Noctuidae) larvae. This study was conducted to evaluate the physiological interferences in the soybean armyworm Spodoptera litura caused by active fractions of Aglaia harmsiana seed extract.  The activity of the test materials was assessed by dietary preparation and topical application method. Repeated fractionations of A. harmsiana extract by chromatographic methods yielded two active fractions, designated as fraction 2-7 (0.0184%) and 2-8 (0.3773%). The results showed that fraction 2-8 had strong insecticidal activity against S. litura larvae, with LC50 by topical application and dietary preparation were 0.49% and 0.0044%, respectively.  A sublethal treatment with the active fraction (LC25) reduced the relative growth rate, efficiency of conversion of ingested food, and efficiency of conversion of digested food by 52.9%, 42.9%, 49.6% with topical application and 66.7%, 50%, 63.8% with dietary preparation method.  The treatments with that fraction at LC10 and LC25 to the fourth instars reduced the activity of invertase enzyme by 34% and 47%, but increased the activity of trehalase by 6.2% and 12.5% as compared with controls.

scholarly journals Bioaktivitas Campuran Ekstrak Biji Barringtonia asiatica L. (Kurz.) (Lecythidaceae) dan Getah Azadirachta indica A. Juss. (Meliaceae) terhadap Larva Spodoptera litura F. (Lepidoptera: Noctuidae)

Agrikultura ◽  
2015 ◽  
Vol 26 (1) ◽  
Author(s):  
Indah Meutia Arisanti ◽  
Danar Dono
Keyword(s):  
Azadirachta Indica ◽  
Spodoptera Litura ◽  
Toxicity Testing ◽  
Seed Extract ◽  
Feeding Method ◽  
Pests And Diseases ◽  
Lc50 Value ◽  
Low Toxicity ◽  
Insecticidal Toxicity ◽  
Lepidoptera Noctuidae

ABSTRACTBioactivity of mixed seed extract of Barringtonia asiatica l. (kurz.) (lecythidaceae) and sap of Azadirachtaindica A. Juss. (meliaceae) against larvae of Spodoptera litura f. (lepidoptera: noctuidae)Barringtonia asiatica and Azadirachta indica are known to have variety of chemical compounds that haspotency to be developed as botanical pesticides. The study aimed to determine insecticidal toxicity of B.asiatica seed extract and A. indica sap and their mixture. The experiment was carried out in the Laboratoryof Pesticides and Application Technology, Department of Plant Pests and Diseases, Faculty of Agriculture,Universitas Padjadjaran. The experiments were conducted either on toxicity test of the seed extract of B.asiatica and the sap of A. indica singly or their mixture based on the comparison of LC95. Toxicity testing wasperformed using a leaf-residue feeding method on the instar I of Spodoptera litura larvae. The resultsshowed that seed extractof B.asiatica has a moderate toxicity to S.liturawith the LC50 value of 0.491% andaffected body weight of the larvae. The sap of A.indicahas had slightly low toxicity with the LC50 value of1.310%. The mixture of B. asiatica seed extract and A. Indica sap (based on ratio of 4.1%of B. asiaticacompare to 4.9% of A. Indica) has LC50 value of 0.970% (slightly low toxicity) and the LC95 value of 15.99%that was antagonistic on the LC95 level with Cotoxicity Ratio value of 0.23% on 12 days after treatment.Keywords: Cotoxicity ratio, independent joint action, Barringtonia asiatica, Azadirachta indica, SpodopteralituraABSTRAKBarringtonia asiatica dan Azadirachta indica diketahui memiliki berbagai senyawa kimia yang berpotensidikembangkan sebagai pestisida nabati. Penelitian yang bertujuan untuk mengetahui toksisitas ekstrak biji B.asiatica dan getah A. indica serta campurannya telah dilakukan di Laboraturium Pestisida dan TeknikAplikasi, Departemen Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Padjadjaran.Penelitian meliputi uji toksisitas ekstrak biji B. asiatica dan getah A.indica secara tunggal, dan pengujiancampuran ekstrak biji B. asiatica dan getah A.indica berdasarkan pada perbandingan LC95. Pengujiantoksisitas dilakukan dengan metode celup pakan pada larva instar I Spodoptera litura. Hasil penelitianmenunjukkan bahwa ekstrak biji B. asiatica bersifat toksik sedang terhadap S. litura dengan nilai LC50sebesar 0,491% dan berpengaruh terhadap bobot basah larva. Getah A. indica bersifat toksik ringan dengannilai LC50 1,310%. Campuran ekstrak biji B. asiatica dan getah A. indica berdasarkan rasio 4,1% B. asiaticaberbanding 4,9% A. indica memiliki LC50 sebesar 0,970% (toksisitas ringan) dengan LC95 sebesar 15,99% dandinyatakan bersifat antagonis pada LC95 dengan nilai Nisbah Kotoksisitas 0,23% pada 12 hari setelahaplikasi.Kata kunci: Nisbah Kotoksisitas, Kerja bersama bebas, Barringtonia asiatica, Azadirachta indica, Spodopteralitura

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

2019 ◽  
Vol 76 (3) ◽  
pp. 928-935 ◽  
Author(s):  
Sorachat Tharamak ◽  
Thitaree Yooboon ◽  
Anchulee Pengsook ◽  
Atcharee Ratwatthananon ◽  
Nutchaya Kumrungsee ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Spodoptera Litura ◽  
Lepidoptera Noctuidae

Insecticidal activity of pogostone against Spodoptera litura and Spodoptera exigua (Lepidoptera: Noctuidae)

2013 ◽  
Vol 70 (3) ◽  
pp. 510-516 ◽  
Author(s):  
Si-Han Huang ◽  
Ji-Dong Xian ◽  
Song-Zhi Kong ◽  
Yu-Cui Li ◽  
Jian-Hui Xie ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Spodoptera Litura ◽  
Spodoptera Exigua ◽  
Lepidoptera Noctuidae

scholarly journals Synthesis and Insecticidal Activities of Novel Nitrogenous Derivatives of Celangulin-V

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Jiwen Zhang ◽  
Lihui Cui ◽  
Longbo Li ◽  
Zhan Hu ◽  
Qianliang Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Biological Activity ◽  
Insecticidal Activity ◽  
Structural Factors ◽  
Mythimna Separata ◽  
Lead Structure ◽  
The Third ◽  
First Time ◽  
Derivatives Of ◽  
Insecticidal Activities

In order to develop new biorational pesticides and clarify the potential structural factors needed for the biological activity of celangulin-V analogues, thirty novel nitrogenous derivatives were designed and synthesized. The single crystal structure of celangulin-V is reported for the first time and provides a more accurate structure than that previously reported. The structures of all the new derivatives were confirmed by either NMR or ESI-MSn analysis. Insecticidal activities of these compounds were tested against the third-instar larvae of Mythimna separata. One derivative (1–6) showed higher insecticidal activity than celangulin-V, with a KD50 of 231.2 μg.g–1, while two compounds (2–13 and 2–14) exhibited lower insecticidal activities; the others revealed no activity at a concentration of 20 mg mL−1. The results support the view that celangulin-V has the potential to be a lead structure of semi-synthetic green insecticides.

scholarly journals BAKTERI ENTOMOPATOGEN SEBAGAI AGEN BIOKONTROL TERHADAP LARVA Spodoptera litura (F.)

2017 ◽  
Vol 16 (1) ◽  
pp. 13-21
Author(s):  
Deni Zulfiana ◽  
Ni Putu Ratna Ayu Krishanti ◽  
Bramantyo Wikantyoso ◽  
Apriwi Zulfitri
Keyword(s):  
Bacillus Thuringiensis ◽  
Spodoptera Litura ◽  
Biocontrol Agent ◽  
Insect Control ◽  
Agricultural Pests ◽  
The Third ◽  
Entomopathogenic Bacteria ◽  
Almost All ◽  
Lepidoptera Noctuidae ◽  
Third Instar Larvae

Spodoptera litura (F.) (Lepidoptera: Noctuidae) is one of the agricultural pests that attacking almost all kinds of herbaceous plants, especiallyvegetables. Insect control using entomopathogenic bacteria is an alternative strategy that is effective and has a lower environmental impact than the use of synthetic insecticides. The purpose of this research was to explore entomopathogenic bacteria that have insecticidal activity against S. litura larvae at various stages of instars. The result showed that 25% of total number of isolated bacteria have potency as entomopathogenic bacteria. Isolate Staphylococcus sciuri strain BLSP-3 and isolate Serratia sp. strain BLSP-4 showed the highest larvicidal activity against the first and second instar larvae of S. litura 83% and 86%, respectively. The activity against on the third instar larvae however was only by 40%. However, the mortality caused by both isolates was lower than that of Bacillus thuringiensis (more than 90% mortality to the first and second instars and 80 % of the third instar larvae). It is suggested that both of isolates are potential to be developed further as a biocontrol agent to control S. litura population.

Starvation Effects on Larval Development of Beet Armyworm (Lepidoptera: Noctuidae)

2008 ◽  
Vol 43 (2) ◽  
pp. 247-253 ◽  
Author(s):  
Yigen Chen ◽  
John R. Ruberson
Keyword(s):  
Insect Pests ◽  
Head Capsule ◽  
Developmental Time ◽  
Beet Armyworm ◽  
Pupal Weight ◽  
Herbivorous Insect ◽  
The Third ◽  
First Instar ◽  
Starvation Effects ◽  
The Cost

Sporadic starvation of herbivorous insect pests, such as the beet armyworm Spodoptera exigua (Hübner), often occurs due to host plant scarcity and dislodgement from host plants resulting from inclement weather, enemy attack, and other perturbations. We hypothesized that (1) starvation of beet armyworm in earlier instars would increase the possibility of undergoing supernumerary instars greater than would be the case for later instars; and (2) starvation of beet armyworm in earlier instars would prolong developmental time more than starvation in later instars. We tested these hypotheses by starving beet armyworm larvae for 48 h in the first, third, and fifth instars, and monitoring their development. Beet armyworms normally have 5 instars before pupation. Significantly more larvae underwent 6 larval instars (20.22 ± 4.35%) when starved for 2 d in the first instar compared with those starved for 2 d in the third (2.0 ± 2.00) and fifth instars (0.0), and relative to unstarved larvae (0.0). The number of instars that S. exigua larvae will experience can be predicted as early as the third instar-head capsule widths in this instar clearly differentiate for those destined to experience 5 and 6 instars. Developmental times of starved larvae also were prolonged compared with unstarved larvae. Developmental times (mean ± SE in days) of larvae starved in the first instar (20.32 ±0.16) were significantly longer than those starved in the third (17.04 ± 0.20) or fifth instars (16.92 ± 0.10), or than unstarved larvae (14.62 ± 0.25). Timing of starvation significantly affected the pupal weight of larvae undergoing 5 instars. This suggests that (1) starvation of 2 d in very early instars (the first instar) increases the pupal weight at the cost of prolonged developmental time; and (2) starvation of 2 d in later instars (the fifth instar) leads to lower pupal biomass, presumably because of inability to compensate for the loss.

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