scholarly journals Preying capacity of different established predators of the aphid Lipaphis erysimi (Kalt.) infesting rapeseed-mustard crop in laboratory conditions

2013 ◽  
Vol 49 (No. 2) ◽  
pp. 84-88 ◽  
Author(s):  
K. Singh ◽  
N.N. Singh
Keyword(s):  
Coccinella Septempunctata ◽  
Juvenile Stage ◽  
Lipaphis Erysimi ◽  
Mustard Aphid ◽  
Larval Stages ◽  
Laboratory Conditions ◽  
Mustard Crop ◽  
Cropping Seasons ◽  
Syrphid Flies

Experiments on the preying capability of different stages of larvae of coccinellid and syrphid flies on the mustard aphid, Lipaphis erysimi (Kalt.), were conducted in a laboratory during the winter cropping seasons of 2009–2010 and 2010–2011. Results revealed that grubs of the Coccinella septempunctata Linn. preyed the highest number of mustard aphids (average 61.42 aphids/day) followed by Syrphus confrater Wied (34.81 aphids/day), Syrphus balteatus Deg. (32.26 aphids/day) and Ischiodon scutellaris Fab. (27.76 aphids/day) during their larval span. Among the larval stages of the coccinellid and syrphid predators, it was also analysed that the last juvenile stage of the predators was proved the mightiest devourer against the aphid L. erysimi. These predators could be used effectively for the management of L. erysimi on rapeseed-mustard crop.

Biology, Predatory Potential, Life Table, and Field Evaluation of Propylea dissecta (Coleoptera: Coccinellidae), Against Lipaphis erysimi (Hemiptera: Aphididae) on Broccoli

2019 ◽  
Vol 113 (1) ◽  
pp. 88-97 ◽  
Author(s):  
Thangavel Boopathi ◽  
Soibam Basanta Singh ◽  
Sudip Kumar Dutta ◽  
Vishambhar Dayal ◽  
Akoijam Ratankumar Singh ◽  
...  
Keyword(s):  
Life Table ◽  
Coccinella Septempunctata ◽  
Field Evaluation ◽  
Reproductive Rate ◽  
Lipaphis Erysimi ◽  
Adult Males ◽  
Mustard Aphid ◽  
Net Reproductive Rate ◽  
Larval Stages ◽  
Propylea Dissecta

Abstract Propylea dissecta (Mulsant) (Coleoptera: Coccinellidae) is one of the most promising ladybird beetle against many sucking pests. Predation rates, developmental biology, life table, and field assessment of this ladybird were examined against mustard aphid, Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae), on broccoli. Data on the life history were collected at 23 ± 1°C and 70 ± 1% RH and were evaluated using the two-sex, age-stage life table. Results showed that the two-sex, age-stage life table-based net reproductive rate (R0) was 11.264 ± 6.197 offspring. The adult females lived longer (33.8 ± 2.356 d) than the adult males (32.2 ± 0.841 d). The fourth instar consumed most of L. erysimi (113.97 ± 5.76) compared to the other larval stages of the predator. Male (1,821) and female (2,673) consumed more aphids than larvae. The net consumption rate was 741.78 ± 89.91 aphids. Other aphidophagous predators such as Coccinella septempunctata L., Micraspis discolor (F.), Coccinella transversalis (F.), and syrphid (Diptera: Syrphidae) were also noted in broccoli. Our research showed that inoculative release of 150 or 200 adults per 1,000 m2 for two times on broccoli achieved a significant decrease in aphids L. erysimi and Brevicoryne brassicae L. (Hemiptera: Aphididae) (>95%). The release rate of 150 adults per 1,000 m2 for two times may, therefore, be recommended to manage the aphid population on broccoli.

scholarly journals Efficacy of Biorational Compounds against Mustard Aphid (Lipaphis erysimi Kalt.) and English Grain Aphid (Sitobion avenae Fab.) under Laboratory Conditions in Nepal

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Dipak Khanal ◽  
Salu Maharjan ◽  
Jamuna Lamichhane ◽  
Pritika Neupane ◽  
Srijana Sharma ◽  
...  
Keyword(s):  
Block Design ◽  
Aqueous Suspension ◽  
Pure Water ◽  
Sitobion Avenae ◽  
Lipaphis Erysimi ◽  
Control Treatment ◽  
Verticillium Lecanii ◽  
Mustard Aphid ◽  
Laboratory Conditions ◽  
Grain Aphid

Mustard aphid (Lipaphis erysimi) and English grain aphid (Sitobion avenae) are among the most important pests in mustard and wheat fields in Nepal. Biocide Manic (Metarhizium anisopliae a.i. = 1 × 109 spores/ml) at 3 ml/l water, Agri Sakti (Beauveria bassiana a.i. = 1 × 109 spores/ml) at 3.3 ml/l water, Varunastra (Verticillium lecanii spores 2% aqueous suspension, 2 × 108 CFU/ml) at 6 ml/l water, Mahastra (Bacillus thuringiensis var. kurstaki 0.5% wettable powder) at 6 g/l water, Neemraj Super (Azadirachitin 0.3% w/w) at 3.3 ml/l water, Tracer (Spinosad 90% spinosyns) at 0.33 ml/l water, and control treatment (pure water) were used to test their efficacy against L. erysimi and S. avenae, using leaf dip and spray methods under laboratory conditions in Rupandehi, Nepal, in the year 2018. Each treatment was replicated four times, and the experiment was carried out in a randomized complete block design. Mortality of aphids was recorded at 24, 48, 72, and 98 hours after treatment application. The result revealed highest mortality of mustard aphids with Agri Sakti at 24 hours after treatment (HAT); however, Neemraj Super was found to be the most effective at 48, 72, and 96 HAT with the leaf spray method. With the leaf dip method, Neemraj Super killed more mustard aphids than other treatments at all observed time points. Among tested biorational products, Agri Sakti was found to be most effective against English grain aphids in both leaf spray and leaf dip methods. In all the bioassays, the mortality caused by biorational compounds over control was highly significant. The present study suggests for further verification of the biorational products in the field and development of novel management strategies against different species of aphids.

Efficacy of sub lethal doses of Insecticides on mustard aphid, Lipaphis erysimi Kalt

2018 ◽  
Vol 3 (01) ◽  
pp. 16-19
Author(s):  
Wajid Hasan ◽  
Nida Asif ◽  
Shweta Patel ◽  
N. K. Singh ◽  
Rajendra Singh
Keyword(s):  
Lipaphis Erysimi ◽  
Mustard Aphid ◽  
Laboratory Conditions ◽  
Lambda Cyhalothrin ◽  
Lethal Doses

The present study was done to know the efficacy of sub lethal doses Insecticides on mustard aphid, L. erysimi Kalt under laboratory conditions. Results revealed that the highest mortality of L erysimi were observed 100 % (Cypermethrin 10EC and Dimethoate 30 EC) followed by 93.33% (Thiamethoxam 25 WG, Imidacloprid 70 WG ), 86.67% (Acetamiprid 20 SP), 73.33% (Chlorantraniliprole 18.5 SC, Fenpyroximate 5 SC), 60% (Pyriproxyfen 10 EC, Fipronil 5 SC) at 72 Hrs after treatment in 0.001% concentration. At 72 Hrs after treatment in 0.002% concentration the highest mortality were observed 100% (Cypermethrin 10EC, Chlorantraniliprole 18.5 SC and Dimethoate 30 EC) followed by 93.33% (Lambda cyhalothrin 5EC, Imidacloprid 70 WG), 86.67% (Thiamethoxam 25 WG), 60% (Pyriproxyfen 10 EC), 80% (Fenpyroximate 5 SC), 73.33% (Fipronil 5 SC), 66.67% (Pyriproxyfen 10 EC, Acetamiprid 20 SP). Whereas Treated with 0.003% the highest mortality were observed 100% (Dimethoate 30 EC, Chlorantraniliprole 18.5 SC, Lambda cyhalothrin 5EC, Imidacloprid 70 WG Cypermethrin 10 EC) followed by 93.33% (Thiamethoxam 25 WG, Fenpyroximate 5 SC), 80% (Acetamiprid 20 SP, Pyriproxyfen 10 EC) and lowest 66.67% mortality recode in treated with Fipronil 5 SC.

scholarly journals Relative susceptibility of the Bikaner and Delhi populations of mustard aphid, Lipaphis erysimi (Kalt.) (Homoptera: Aphididae), and its predator, Coccinella septempunctata L. (Coleoptera: Coccinellidae), to different insecticides

2015 ◽  
Vol 95 (1) ◽  
pp. 27-31
Author(s):  
K. Shankarganesh ◽  
Sachin Suresh Suroshe ◽  
Bishwajeet Paul
Keyword(s):  
Coccinella Septempunctata ◽  
Field Conditions ◽  
Lipaphis Erysimi ◽  
Relative Toxicity ◽  
Mustard Aphid ◽  
Relative Susceptibility

A study was undertaken to assess the effectiveness of five insecticides against the Delhi and Bikaner populations of mustard aphid, Lipaphis erysimi (Kalt.), using the leaf dip method, and against Coccinella septempunctata L. in semi-field conditions. Acetamiprid and thiamethoxam were found to be more toxic than other insecticides. After 24 h, the LC50 values for the Bikaner population against different insecticides were 7.0, 6.0, 4.0, 3.0 and 2.0 ppm for carbosulfan, bifenthrin, imidacloprid, acetamiprid and thiamethoxam, respectively. Similarly, the descending order of toxicity for the Delhi population was acetamiprid (7.0 ppm), thiamethoxam (9.0 ppm), imidacloprid (15.0 ppm), carbosulfan (32.0 ppm) and bifenthrin (36.0 ppm). The relative toxicity values suggest that in both populations, thiamethoxam and acetamiprid show the highest toxicity. Carbosulfan and bifenthrin were highly toxic to coccinellid grubs and resulted in 100% mortality in semi-field conditions, whereas the neonicotinoids acetamiprid and thiamethoxam showed less mortality. It showed the tolerance of coccinellidae against neonicotinoids under semi-field conditions.

scholarly journals Biology and feeding potential of Coccinella septempunctata (Linn.) against Lipaphis erysimi (Kalt) at different temperature regimes

2016 ◽  
Vol 8 (4) ◽  
pp. 1762-1765
Author(s):  
Richa Varshney ◽  
R. R. Rachana ◽  
R. S. Bisht
Keyword(s):  
Incubation Period ◽  
Coccinella Septempunctata ◽  
Lipaphis Erysimi ◽  
Oviposition Period ◽  
Mustard Aphid ◽  
Male And Female ◽  
Temperature Regimes ◽  
Aphid Consumption ◽  
Female Longevity ◽  
Feeding Potential

Biology and feeding potential of Coccinella septempunctata (Linn.) were studied in laboratory on 3rd instar nymphs of mustard aphid (Lipaphis erysimi Kalt.) at two different temperature regimes. At 30± 20C, fecundity, oviposition period, hatchability of eggs, male and female longevity (232±70.46, 12.8±3.91, 82.87±6.66, 22.70 ± 2.21and 26.60 ± 4.45, respectively) were higher and incubation period, pre-oviposition period, total grub duration and pupal duration (2.6±0.51, 6.5±3.53, 8.7 ± 1.63 and 5.1 ± 1.10, respectively) were lesser in comparison to 25± 20C where fecundity, oviposition period, hatchability of eggs, male and female longevity, incubation period, preoviposition period, total grub duration and pupal duration were 169.8±61.12, 7.9±1.37, 71.68±4.08, 16.2 ± 1.31 and 21.50 ± 1.95, 2.9±0.73, 7.7±2.49, 11.1 ± 1.52 and 5.8 ± 0.918, respectively . At 27± 2 0C, total mustard aphid consumption by a grub of C. septempunctata during the whole life span, was 424.4±2.78 mustard aphids in comparison to 272.64±1.79 mustard aphid at 23± 20C. Similarly an adult male and female consumed 103.2±1.52 and 116.6 ±1.46 aphids per day respectively at 27± 2 0C in comparison to 65.6 ± 1.02 and 71.8 ± 1.60 at 23± 20C. Thus, at both temperatures aphid consumption increased gradually till 4th instar and 30±20C was found to be most suitable temperature as compared to 25±20C for the life history of C. septempunctata. Hence, it could be concluded that C. septempunctata might play a suitable role in biointensive Integrated Pest Management programme because of better longevity and high predatory potential against the mustard aphid.

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