Oviposition Experience by the Larval Parasitoid, Cotesia kariyai, on Nonhost, Spodoptera litura, Can Deter Subsequent Attacks

2020 ◽  
Vol 33 (2-4) ◽  
pp. 91-96
Author(s):  
Fumika K. Aikawa ◽  
Kazumu Kuramitsu ◽  
Yooichi Kainoh
Keyword(s):  
Spodoptera Litura ◽  
Larval Parasitoid ◽  
Cotesia Kariyai

Learning of host-infested plant volatiles in the larval parasitoid Cotesia kariyai

2001 ◽  
Vol 99 (3) ◽  
pp. 341-346 ◽  
Author(s):  
Junji Fukushima ◽  
Yooichi Kainoh ◽  
Hiroshi Honda ◽  
Junji Takabayashi
Keyword(s):  
Plant Volatiles ◽  
Infested Plant ◽  
Larval Parasitoid ◽  
Cotesia Kariyai

Parasitism potential of Diadegma argenteopilosa (Cameron) (Hymenoptera : Ichneumonidae), an internal larval parasitoid of Spodoptera litura (Fab.) (Noctuidae: Lepidoptera)

ENTOMON ◽  
2020 ◽  
Vol 45 (2) ◽  
pp. 123-128
Author(s):  
Akshay Mahesh Bhosale
Keyword(s):  
Spodoptera Litura ◽  
Host Density ◽  
Nutritional Requirement ◽  
Pest Species ◽  
Progeny Production ◽  
Mass Multiplication ◽  
Larval Parasitoid ◽  
Behavioral Studies ◽  
Percent Parasitism ◽  
Honey Solution

Diadegma argenteopilosa (Cameron) (Ichneumonidae: Hymenoptera) is an internal larval parasitoid of Spodoptera litura (Fab.) (Noctuidae: Lepidoptera), a notorious and polyphagus pest of pulses and vegetables in India. Attempt has been made to initiate their mass multiplication for successful biocontrol programme. Behavioral studies, food stuffs, host selection aspects plays a crucial role in mass multiplication of biocontrol agents. Therefore, present work was conducted to study the optimum host age, specificity and host density for maximum progeny production of the parasitoid under laboratory conditions and later their release in the field for the management of pest species. The parasitoid caused highest mortality in the pest larvae of second instars, 4 day old larvae were attacked most with high percent parasitism, 39.00%. Optimum density for maximum progeny production of D. argenteopilosa was 20, which generate maximum parasitism (43.00%). Host specificity by exposing the parasitoids towards different host species and analyse parasitoid preference by S. litura > Helicoverpa armigera (Hubner) > Mythimna separata Walker > Achaea janata (Linnaeus). Nutritional requirement of parasitoid was tested with different foodstuffs and found 50% honey best suited for maximum longevity 8.2 and 11.4 days for males and females respectively. The longevity ratio also female biased, 1: 1.39 (Male: Female). From the results it concludes that D. argenteopilosa fed with 50% honey solution, exposed to 3-5 day old caterpillars of S. litura at density of 20 gave maximum progeny production and effectively utilized in the biocontrol programme.

Negative cross resistance of Spodoptera litura Fabricius population of tomato to newer molecule spinetoram

ENTOMON ◽  
2019 ◽  
Vol 44 (2) ◽  
pp. 127-132
Author(s):  
M. Visnupriya ◽  
N. Muthukrishnan
Keyword(s):  
Spodoptera Litura ◽  
Laboratory Strain ◽  
Field Population ◽  
Resistance Ratio ◽  
Cross Resistance ◽  
In Vivo Toxicity

Field population of Spodoptera litura from tomato ( resistant to the majority of the conventional insecticide molecules) were subjected to the in vivo toxicity of spinetoram 12 SC to assess whether cross resistance exists or not. Untreated larvae of both field and laboratory strains showed no mortality during 48 hours of feeding. After 48 hours of feeding on spinetoram 12 SC treated leaves, LC50s of field larvae were 0.28, 0.93, 3.71 and 7.11 ppm for the 2nd, 3rd, 4th and 5th instars of S. litura respectively. However, in the laboratory strain these values were 1.12, 5.86, 36.72 and 91.55 ppm for 2nd, 3rd, 4th and 5th instars of S. litura respectively. Resistance ratio was 0.25, 0.16, 0.10 and 0.08 for the 2nd instar up to the 5th instar of S. litura.

Peramalan Serangan Hama Tanaman Tembakau (Nicotiana tabaccum) pada Fase Vegetatif di PT. Tarutama Nusantara Jember

2020 ◽  
Author(s):  
Irma Harlianingtyas ◽  
◽  
Ramadhan Taufika ◽  
Keyword(s):  
Spodoptera Litura ◽  
Nicotiana Tabaccum

Tembakau adalah produk pertanian semusim yang bukan termasuk dalam komoditas perkebunan. Produk ini dikonsumsi bukan untuk makanan tetapi sebagai pengisi waktu luang yaitu sebagai bahan baku rokok dan cerutu. Tembakau juga dapat dikunyah. Kandungan metabolit sekunder yang kaya juga membuatnya bermanfaat sebagai pestisida dan bahan baku obat. Salah satu tantangan dalam budidaya tembakau adalah adanya organisme pengganggu tanaman. Serangan hama dan penyakit dapat mempengaruhi kualitas maupun kuantitas hasil panen tembakau. Serangan hama dan penyakit yang paling banyak terjadi adalah pada saat fase vegetatif, karena pada vase ini semua bagian tanaman menjadi sasaran makanan bagi organisme pengganggu tanaman. Organisme pengganggu tanaman yang dianggap sebagai hama pada vase vegetattif tanaman tembakau adalah ualt tanah, ulat daun, belalang, kupu, gayas/jangkrik. Kegiatan penelitian ini dilakukan di PT Tarutama Nusantara Jember, data yang digunakan adalah data serangan hama yang terjadi pada seluruh kebun milik TTN dari tahun 2013 hingga 2019. Tujuan dilakukan penelitian ini adalah mengtahui prediksi serangan hama yang akan terjadi guna mempermudah perusahaan dalam menentukan strategi dan kebijakan guna meningkatkan produksi tembakau khususnya sebagai pelapis cerutu dekblad/wrapper. Metode penelitian yang digunakan untuk memprediksi serangan hama yang terjadi adalah metode regresi linier. Hasil penelitian menunjukkan prediksi serangan hama ulat tanah (Agrotis iplison) tahun 2021 sebesar 15,6%, ulat grayak (Spodoptera litura) sebesar 19,08%, serangan hama belalang sebesar 15,77%, dan serangan hama ketep (Setomorpha rutella) sebesar 15,23%, serta serangan hama jangkrik (Gryllidae) pada tahun 2021 adalah sebesar 8,20%.

Diverse sources of resistance to Spodoptera litura (F.) in groundnut

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
M. A. Saleem ◽  
G. K. Naidu ◽  
H. L. Nadaf ◽  
P. S. Tippannavar
Keyword(s):  
Recombinant Inbred ◽  
Spodoptera Litura ◽  
Hot Spot ◽  
Recombinant Inbred Lines ◽  
Insect Pest ◽  
Inbred Lines ◽  
Leaf Damage ◽  
Botanical Variety ◽  
Resistant Genotypes ◽  
Botanical Varieties

Spodoptera litura an important insect pest of groundnut causes yield loss up to 71% in India. Though many effective chemicals are available to control Spodoptera, host plant resistance is the most desirable, economic and eco-friendly strategy. In the present study, groundnut mini core (184), recombinant inbred lines (318) and elite genotypes (44) were studied for their reaction to Spodoptera litura under hot spot location at Dharwad. Heritable component of variation existed for resistance to Spodoptera in groundnut mini core, recombinant inbred lines and elite genotypes indicating scope for selection of Spodoptera resistant genotypes. Only 29 (15%) genotypes belonging to hypogaea, fastigiata and hirsuta botanical varieties under mini core set, 15 transgressive segregants belonging to fastigiata botanical variety among 318 recombinant inbred lines and three genotypes belonging to hypogaea and fastigiata botanical varieties under elite genotypes showed resistance to Spodoptera litura with less than 10% leaf damage. Negative correlation existed between resistance to Spodoptera and days to 50 per cent flowering indicating late maturing nature of resistant genotypes. Eight resistant genotypes (ICG 862, ICG 928, ICG 76, ICG 2777, ICG 5016, ICG 12276, ICG 4412 and ICG 9905) under hypogaea botanical variety also had significantly higher pod yield. These diverse genotypes could serve as potential donors for incorporation of Spodoptera resistance in groundnut.

PENGARUH PEMBERIAN KONSENTRASI BIOINSEKTISIDA DAUN DAN BIJI MIMBA (Azadirachta indica) TERHADAP KEMATIAN ULAT GRAYAK (Spodoptera litura)

2018 ◽  
Vol 10 (02) ◽  
Author(s):  
P. S. Ajiningrum ◽  
I. A. K. Pramushinta
Keyword(s):  
Spodoptera Litura ◽  
Leaf Extract ◽  
Final Analysis ◽  
Seed Extract ◽  
Mortality Data ◽  
Botanical Insecticide ◽  
Nutritional Content ◽  
Variant Analysis ◽  
The Tropics ◽  
Army Worm

Red spinach (Alternanthera amoena) is one of the vegetable commodities that many people in demand for consumption because of its high nutritional content. Efforts to increase the production of red spinach often experience various obstacles. The main obstacle that limits the productivity of red spinach in the tropics is the number of Plant Disturbing Organisms  in the form of pests and potential diseases that can attack and decrease the production of spinach. One of the pests that often attack spinach is the existence of army worm (Spodoptera litura F.). Therefore, farmers need a way to eradicate the pest. This research is experimental using Random Complete Group. The data obtained were analyzed with variant analysis (ANOVA) in one direction and continued with LSD (Least Significant Different) test. Provision of botanical insecticide done by spraying the extract of leaves and seeds mimba with concentration dose 0%, 5%, 10% and 15%. In the final analysis of mortality data of army worm (Spodoptera litura F.) treated with mimba leaf extract obtained significant value of 76.263 at a significant level of 0.05 so it can be concluded that there is influence of mimba leaf extract on mortality of army worm. In the final analysis of mortality data of army worm (Spodoptera litura F.) treated with mimba seed extract obtained significant value of 78.625 at a significant level of 0.05 so it can be concluded that there is an effect of mimba seeds extract on mortality army worm.   Keywords: mimba leaf extract,  mimba seed extract, red spinach (Alternanthera amoena), army worm (Spodoptera litura F.), botanical insecticide

Sign in / Sign up

Export Citation Format

Share Document