Efficiency of entomopathogenic nematodes (Rhabditida) against Saccharococcus sacchari (Cockerell) (Homoptera: Pseudococcidae) under laboratory conditions

Roby, A. S. M. H. El

doi:10.18681/pjn.v36.i01.p59-63

Cited by 5 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S. sacchari is commonly known as pink sugarcane mealybug and has been frequently found in sugarcane fields in Brazil (MONTEIRO;PERONTI;MARTINELLI, 2017;QIN et al, 2017;ELROBY, 2018). This species can live under different environmental conditions and is found on sugarcane plants at the different development stages, from infesting roots in the soil after planting the stalks until the plant is ready to be harvested, which makes mealybug control difficult (SARTIAMI et al, 2017;MIRABAL-RODRÍGUEZ, 2018).…”

Section: Resultsmentioning

confidence: 99%

Interactions between ants and mealybugs in sugarcane: species and effects on insect pests

Marchiori,

Almeida,

Mayhé-Nunes

et al. 2023

Rev. Caatinga

View full text Add to dashboard Cite

The objective of this work was to evaluate ant species interacting with mealybugs in sugarcane plantations, the frequency of occurrence, and the effects of the interaction with ants on mealybug population size. The data was collected in a sugarcane plantation area in Seropedica, Rio de Janeiro, Brazil. The insect species were collected from 70 thoroughly inspected sugarcane plants and the nature and frequency of the interactions were evaluated. The effect of the interaction with ants on mealybug abundance was evaluated by counting the number of adult females of each mealybug species on ten plants isolated and ten plants not isolated from ants. Two mealybug species were collected: Aclerda takahashii (Kuwana, 1932) and Saccharicoccus sacchari (Cockerell, 1895). Ten and seven ant species were found interacting with A. takahashii and S. sacchari, respectively, which were distributed among six genera; the most frequent genera were Crematogaster and Camponotus. Three ant species interacted exclusively with A. takahashii, whereas the others interacted with both mealybug species. The abundance of A. takahashii females was significantly higher on non-isolated than on isolated plants (Paired t-test; t = 2.34; p = 0.04). However, no significant difference in S. sacchari abundance was found between isolated and non-isolated plants (t = 0.27; p = 0.8), nor for the two species combined (t = 1.9; p = 0.09). Thus, ant species that interact with mealybugs in sugarcane plantations cause increases in A. takahashii populations which, at a larger scale, can reduce crop yield.

show abstract

Section: Resultsmentioning

confidence: 99%

Interactions between ants and mealybugs in sugarcane: species and effects on insect pests

Marchiori,

Almeida,

Mayhé-Nunes

et al. 2023

Rev. Caatinga

View full text Add to dashboard Cite

show abstract

“…In numerous laboratory bioassays throughout the years, different EPN varieties of Heterorhabditis and Steinernema showed different responses to various pests [27][28][29][30][31]. It may be due to the environmental parameters that parasitic bacterium (Xenorhabdus spp.…”

Section: Discussionmentioning

confidence: 99%

Compatibility of Egyptian strains of entomopathogenic nematodes (Nematoda: Rhabditida) with insecticides and their activity against Spodoptera frugiperda (Lepidoptera: Noctuidae) under laboratory conditions.

Roby

Shaban

Hakeem

2023

Journal of Modern Research

View full text Add to dashboard Cite

Under laboratory conditions, the activity of two entomopathogenic nematodes, Heterorhabditis bacteriophora (HP88) and Steinernema carpocapsae (AT4), as well as their compatibility with two common insecticide formulations (lambada cyhalothrin and flubendiamide) and one insect growth regulator (lufenuron), were evaluated against Spodoptera frugiperda. The nematode IJs were subjected to the LC 50 and LC 25 of insecticides, and the viability of infective juveniles (IJs) was measured before being tested against Galleria mellonella larvae to determine IJs pathogenicity. Also, the mixtures were evaluated against the 4 th instar larvae of S. frugiperda to select one mixture can serve in integrated pest management (IPM) in agro-ecosystems. Results showed that H. bacteriophora strain (HP88) was more efficient with higher pathogenicity and virulence against 4 th larvae of S. frugiperda (LC 50 = 48.67±0.34IJs/ml -1 ) than S. carpocapsae (AT4) (LC 50 = 65.88± 3.04). flubendiamidee was the most toxic insecticide (LC 50 = 3.26±0.52) followed by Lambada cyhalothrin (4.23±0.8PPM). Lufenuron was the least toxic one (5.67±1.53PPM). Both EPN H. bacteriophora (HP88) and S. carpocapsae viability was not affected by any of tested insecticides (LC 25 and LC 50 ), while lambada cyhalothrin reduced S. carpocapsae pathogenicity with LC 50 concentration. Lufenuron at the rate LC50 and Lc25, not affect H. bacteriophora and S. carpocapsae pathogenicity. All tested insecticides with the two doses were harmless according to IOBC test. All mixtures of insecticides with the two EPN strains were synergistic effect against 4 th larvae of S frugiperda except lufeuron with LC 25 was antagonist. It was explored how these nematode insecticide combinations could be used in maize pest management.

show abstract

“…Entomopathogenic nematodes (EPN) belong to both families of Steinernematidae and Heterohabditidae and their associated symbiotic bacteria, Xenorhabdus and Photorhabdus spp. are excellent biological control agents of many insect pests (EL Roby 2011, Hussaini 2014, De Luca et al 2015, Shapiro-Ilan et al 2015, Subramanian and Muthulakshmi 2016, ABD-ELGAWAD 2017, EL Roby 2018. The present study was performed to evaluate different local entomopathogenic nematodes isolates compared with the specific chemical insecticide, imidachlopride against R. ferrugineus through laboratory and field trials.…”

Section: Introductionmentioning

confidence: 99%

Compartive Efficiency of Egyptian Entomopathogenic Nematodes and Imidacloprid on the Red Palm Weevil, Rhynchophorus ferrugineus Oliv

Roby

Rezk

Shamseldean

2018

Journal of Plant Protection and Pathology

View full text Add to dashboard Cite

The efficiency of three isolates of entomopathogenic nematodes indigenous in Egypt, (i. e. Heterorhabditis bacteriophora (EKB20), Steinernema sp. (B32) and Heterorhabiditis sp. (Kasassien isolate)) were determined in the laboratory and field compared with imidacloprid insecticide on the larvae and adults of the red Palm weevil, Rhynchophorus ferrugineus. Results showed that isolates of entomopathogenic nematodes, B32 and EKB20 are more effective than Kasassien against R. ferrugineus larvae at inoculum levels of 1000 and 2000 Infective Juveniles (IJs)/mL. Both isolates of B32 and EKB20 were faster killers achieving more than 90% mortality to the 3 rd instar larvae of the red palm weevil after 72 hrs. Field evaluation showed that Kasassien and EKB20 achieved higher levels of control against diferent stages of R. ferrugineus reaching 100% reduction than the isolate B32 (80.33 % reduction). When the level of palm weevil infestation was moderate (1-3 weevil tunnels/ tree, the reduction percent was 80.33, 100 and 80.66% when the trees were treated with EPN isolates of EKB20, Kasassien and B32 respectively. There was no significant effect when the trees with higher infestation (more than 3 tunnels/palm tree) level were treated with EPN. While as imidacloprid insecticide gave 100% mortality in the three levels of infestation. The current work has indicated that EPN are considered promising biocontrol agents, if correctly applied and released in an integrated control schemes against the red palm weevil.

show abstract

Efficiency of entomopathogenic nematodes (Rhabditida) against Saccharococcus sacchari (Cockerell) (Homoptera: Pseudococcidae) under laboratory conditions

Cited by 5 publications

References 4 publications

Interactions between ants and mealybugs in sugarcane: species and effects on insect pests

Interactions between ants and mealybugs in sugarcane: species and effects on insect pests

Compatibility of Egyptian strains of entomopathogenic nematodes (Nematoda: Rhabditida) with insecticides and their activity against Spodoptera frugiperda (Lepidoptera: Noctuidae) under laboratory conditions.

Compartive Efficiency of Egyptian Entomopathogenic Nematodes and Imidacloprid on the Red Palm Weevil, Rhynchophorus ferrugineus Oliv

Contact Info

Product

Resources

About