Efficacy of the insect parasitic nematode, Romanomermis iyengari, for malaria vector control in Benin West Africa

Abagli, Ayaba Z.; Alavo, Thierv Bc; Platzer, Edward G.

doi:10.1186/1475-2875-11-s1-p5

Cited by 6 publications

(5 citation statements)

References 4 publications

(3 reference statements)

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“…The susceptibility of Cx. pipiens 1 st , 2 nd , 3 rd and 4 th instar larvae to R. iyengari were recorded using the method described by Abagli et al (2012). Six concentrations (1, 2, 3, 4, 5, and 6 pre-parasites per mosquito larva) were used in the study.…”

Section: Susceptibility Of Mosquito Larval Stages To the Nematode Inf...mentioning

confidence: 99%

The parasitic impact of Romanomermis iyengari Welch (Nematoda: Mermithidae) on the survival and biology of the common mosquito, Culex pipiens L. (Diptera: Culicidae)

et al. 2022

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The extensive use of chemical insecticides to control mosquitoes led to the development of insecticide resistance and environmental health hazards. This caused a surge in interest in eco-friendly biocontrol agents. The present study aimed to explore the susceptibility of different instar larvae of the common mosquito, Culex pipiens Linnaeus, 1758, to the mermithid nematode, Romanomermis iyengari Welch, 1964. Moreover, the effects of R. iyengari on the mosquito pupal developmental time, adult emergence, longevity, female fecundity, as well as egg-hatching rate were determined after larval treatment with an LC50 quantity of the nematode pre-parasites. Different instars of Cx. pipiens (1st–4th) were exposed separately to R. iyengari at concentrations of 1–6 pre-parasites/mosquito larva. Mortality rates of mosquito larvae were observed and the LC50 values were calculated. The estimated LC50 values for the 1st–4th larval instars were 3.18, 2.73, 3.79 and 4 pre-parasites/larva, respectively. Mean percent mortality of the 1st–4th larval instars ranged from 10–94%, 16–100%, 4–100% and 0–52%, respectively. The results indicated that exposure of 4th larval instar to the LC50 of R. iyengari pre-parasites significantly prolonged the duration of pupal development, reduced the percentage of emerged adults and reduced mosquito female fecundity compared with the control. In contrast, adult longevity and the egg-hatching rate did not differ between the control and the exposed group. In conclusion, this isolate of R. iyengari could be a promising biocontrol agent for Egyptian Cx. pipiens. Other trials are required to assess the biocontrol potential of this parasite in field conditions.

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Section: Susceptibility Of Mosquito Larval Stages To the Nematode Inf...mentioning

confidence: 99%

The parasitic impact of Romanomermis iyengari Welch (Nematoda: Mermithidae) on the survival and biology of the common mosquito, Culex pipiens L. (Diptera: Culicidae)

et al. 2022

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“…Lot of nematodes belonging to numerous orders and families are known to be parasites of insects [224]. Some insect parasitic nematodes that are specific to mosquitoes [225] may be considered alternatives to chemical insecticides [226]. When tested, they were effective against malaria vectors and several other important mosquito species, such as Ae.…”

Section: Parasitic Nematodesmentioning

confidence: 99%

“…quinquefasciatus, and An. gambiae [226][227][228][229]. As they are naturally adapted to their host, such nematodes are highly specific to theirs hosts, which they can kill by producing high levels of parasitism.…”

Section: Parasitic Nematodesmentioning

confidence: 99%

Mosquito-Borne Diseases Emergence/Resurgence and How to Effectively Control It Biologically

2020

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Deadly pathogens and parasites are transmitted by vectors and the mosquito is considered the most threatening vector in public health, transmitting these pathogens to humans and animals. We are currently witnessing the emergence/resurgence in new regions/populations of the most important mosquito-borne diseases, such as arboviruses and malaria. This resurgence may be the consequence of numerous complex parameters, but the major cause remains the mismanagement of insecticide use and the emergence of resistance. Biological control programmes have rendered promising results but several highly effective techniques, such as genetic manipulation, remain insufficiently considered as a control mechanism. Currently, new strategies based on attractive toxic sugar baits and new agents, such as Wolbachia and Asaia, are being intensively studied for potential use as alternatives to chemicals. Research into new insecticides, Insect Growth Regulators, and repellent compounds is pressing, and the improvement of biological strategies may provide key solutions to prevent outbreaks, decrease the danger to at-risk populations, and mitigate resistance.Pathogens 2020, 9, 310 2 of 26 are not used at all, and those that are still in the test or design phase but are very promising, which we suggest to be considered in the biological control of mosquito-borne diseases.

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Section: Parasitic Nematodesmentioning

confidence: 99%

Translational Research for Zoonotic Parasites: New Findings toward Improved Diagnostics, Therapy and Prevention

2021

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Efficacy of the insect parasitic nematode, Romanomermis iyengari, for malaria vector control in Benin West Africa

Cited by 6 publications

References 4 publications

The parasitic impact of Romanomermis iyengari Welch (Nematoda: Mermithidae) on the survival and biology of the common mosquito, Culex pipiens L. (Diptera: Culicidae)

The parasitic impact of Romanomermis iyengari Welch (Nematoda: Mermithidae) on the survival and biology of the common mosquito, Culex pipiens L. (Diptera: Culicidae)

Mosquito-Borne Diseases Emergence/Resurgence and How to Effectively Control It Biologically

Translational Research for Zoonotic Parasites: New Findings toward Improved Diagnostics, Therapy and Prevention

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