Comparison of Infectivity and Productivity of Steinernema feltiae and Heterorhabditis bacteriophora in Galleria mellonella and Tenebrio molitor

Rahoo, Ali Murad; Mukhtar, Tariq; Bughio, B. A.; Rahoo, Rehana Kanwal

doi:10.17582/journal.pjz/2019.51.2.717.724

Cited by 8 publications

(2 citation statements)

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“…Our findings support the work of many other researchers who assessed the reproductive potential of Steinernema and Heterorhabditis in insect larvae of varying size and observed differences in progeny production [11,21]. However, other factors may also be responsible such as type of nematode isolates, species, type of bacterial symbiont carried by the nematode, host susceptibility, nematode invasion rates and other abiotic conditions [22,23,24,25,26,27,28,29].…”

Section: Nematode Reproductive Potentialsupporting

confidence: 89%

Biocidal Efficacy of a New and Native Species of Entomopathogenic Nematode against Gram Pod Borer, Helicoverpa armigera (Hubner)

War,

Askary,

Ahad

et al. 2024

IJECC

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Efficacy of new and native species of entomopathogenic nematode (EPN), Heterorhabditis casmirica SKUAST-K 104 was evaluated against gram pod borer, Helicoverpa armigera in laboratory conditions. Larval mortality was directly proportional to time period as well as time period but inversely proportional to larval size. H. casmirica SKUAST-K 104 applied @ 50, 100, 150 and 200 IJs per 2nd instar larva resulted in pest mortality by 0.00, 8.33, 16.66, and 25.00 per cent, respectively at 24 hours and they were statistically significant (p ≤ 0.05) from each other. At 200 IJs inoculum level, 8.33, 16.66, 25.0, 41.66 and 50 per cent mortality of 5th instar larva was recorded at 24, 48, 72, 96 and 120 hours post inoculation, respectively. LC50 values was directly proportional to the size of larva but inversely proportional to size of nematode inoculum level. On the other hand, LT50 values was directly proportional to the size of larva but inversely proportional to size of nematode inoculum level. LC50 values calculated at 24 hours for 2nd, 3rd, 4th and 5th instar larvae was 256.88, 277.24, 326.25 and 384.25, respectively, whereas at 120 hours it was 126.11, 160.22, 184.36 and 219.14, respectively. Similarly, LT50 values calculated at inoculum level of 50 IJs per 2nd, 3rd, 4th and 5th instar larvae were 105.0, 113, 122 and 131 hours, respectively but at highest inoculum level of 200 IJs, it was 75, 89, 94 and 100 hours, respectively. Nematode multiplication rate within the host cadaver was directly proportional to the size of the host. Minimum and maximum number of IJs/ larva was 2.72 x 105 and 1.03 x 105, obtained from 2nd and 5th instar larva, respectively.

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Section: Nematode Reproductive Potentialsupporting

confidence: 89%

Biocidal Efficacy of a New and Native Species of Entomopathogenic Nematode against Gram Pod Borer, Helicoverpa armigera (Hubner)

War,

Askary,

Ahad

et al. 2024

IJECC

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“…(Fallet et al, 2022). According to Elbrense et al (2021), differences in virulence or infectivity between Steinernema and Heterorhabditis nematodes may be attributed to host insect specificity, morphological features of the nematode species, and their tolerance to the host's immune response (Rahoo et al, 2017(Rahoo et al, , 2018b(Rahoo et al, , 2019a.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Two Entomopathogenic Nematodes (Nematoda: Rhabditida) Populations in Controlling Fall Armyworm [(Spodoptera Frugiperda) Lepidoptera: Noctuidae] on Maize

Danso,

Adomako,

Obeng

et al. 2024

Plant Prot.

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The fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), is a recent invasive pest significantly impacting maize production and food security in sub-Saharan Africa. While chemical insecticides have offered the most effective control in Ghana, their detrimental effects on human health and the environment necessitate the urgent exploration of alternative, environmentally friendly options. This study compared two entomopathogenic nematodes populations, Heterorhabditis bacteriophora and Steinernema carpocapsae, against a control group (no application) for their efficacy in managing fall armyworm on maize. In the second experiment, S. carpocapsae significantly outperformed both H. bacteriophora and the control in terms of seed weight, achieving a 12.9% increase over the former and a remarkable ninefold improvement over the latter. The first experiment, however, showed no significant difference in seed yield (59 g, 32 g, 2 g) between the two nematode treatments, S. carpocapsae demonstrated the highest yield within this group. Notably, the control group exhibited the highest degree of foliage damage (4.7; 5.0) on a 1-5 scale throughout the study period. Overall, this study demonstrates the superior efficacy of S. carpocapsae compared to H. bacteriophora in controlling fall armyworm on maize. These findings provide valuable understandings for advancing the practical application of entomopathogenic nematodes as a sustainable and eco-friendly biocontrol measure against this devastating pest, contributing to enhanced food security in sub-Saharan Africa.

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Damage to the host cadaver, simulating the effects of scavenging, differentially affects fitness of entomopathogenic nematode species

Cassells,

Treanor,

Jordán Muñoz-Adalia

et al. 2024

Journal of Invertebrate Pathology

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Comparison of Infectivity and Productivity of Steinernema feltiae and Heterorhabditis bacteriophora in Galleria mellonella and Tenebrio molitor

Cited by 8 publications

References 0 publications

Biocidal Efficacy of a New and Native Species of Entomopathogenic Nematode against Gram Pod Borer, Helicoverpa armigera (Hubner)

Biocidal Efficacy of a New and Native Species of Entomopathogenic Nematode against Gram Pod Borer, Helicoverpa armigera (Hubner)

Effectiveness of Two Entomopathogenic Nematodes (Nematoda: Rhabditida) Populations in Controlling Fall Armyworm [(Spodoptera Frugiperda) Lepidoptera: Noctuidae] on Maize

Damage to the host cadaver, simulating the effects of scavenging, differentially affects fitness of entomopathogenic nematode species

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