The impact of radiofrequency exposure on Aedes aegypti (Diptera: Culicidae) development

Abstract

The impact of radiofrequency exposure on Aedes aegypti (Diptera: Culicidae) development [mosquitos] Nik Abdull Halim NMH, Mohd Jamili AF, Che Dom N, Abd Rahman NH, Jamal Kareem Z, Dapari R. The impact of radiofrequency exposure on Aedes aegypti (Diptera: Culicidae) development. PLoS One. 2024 Feb 27;19(2):e0298738. doi: 10.1371/journal.pone.0298738. Abstract Introduction Wireless communication connects billions of people worldwide, relying on radiofrequency electromagnetic fields (RF-EMF). Generally, fifth-generation (5G) networks shift RF carriers to higher frequencies. Although radio, cell phones, and television have benefited humans for decades, higher carrier frequencies can present potential health risks. Insects closely associated with humans (such as mosquitoes) can undergo increased RF absorption and dielectric heating. This process inadvertently impacts the insects’ behaviour, morphology, and physiology, which can influence their spread. Therefore, this study examined the impact of RF exposure on Ae. aegypti mosquitoes, which are prevalent in indoor environments with higher RF exposure risk. The morphologies of Ae. aegypti eggs and their developments into Ae. aegypti mosquitoes were investigated. Methods A total of 30 eggs were exposed to RF radiation at three frequencies: baseline, 900 MHz, and 18 GHz. Each frequency was tested in triplicate. Several parameters were assessed through daily observations in an insectarium, including hatching responses, development times, larval numbers, and pupation periods until the emergence of adult insects. Results This study revealed that the hatching rate for the 900 MHz group was the highest (79 ± 10.54%) compared to other exposures (p = 0.87). The adult emergence rate for the 900 MHz group was also the lowest at 33 ± 2.77%. A significant difference between the groups was demonstrated in the statistical analysis (p = 0.03). Conclusion This work highlighted the morphology sensitivity of Ae. aegypti eggs and their developments in the aquatic phase to RF radiation, potentially altering their life cycle. This study successfully comprehended the influence of RF exposure on the development of Aedes mosquitoes. The 900 MHz RF exposure accelerated the hatching process of Ae. aegypti mosquitoes and increased the percentage of adult emergence. These findings represented an essential initial stage in understanding the impact of RF radiation on Aedes mosquito populations, providing vital insights into the population dynamics. Nevertheless, the potential variability results under distinct study conditions involving RF exposure variation types and the mosquito species studied were necessary. Thus, additional investigation was desirable and crucial to understand the consequences of RF exposure comprehensively on Ae. albopictus and determine the most efficient approaches for identifying the most effective strategies for dengue vector control. Studies are actively investigating the influence of RF exposure on insects (particularly mosquitoes) due to data suggesting that it can impact hatching and developmental processes. Hence, further studies should be conducted to fully comprehend the scope of these effects and clarify their practical relevance in preventing dengue spread. These ongoing studies are pivotal in learning the potential utility of RF exposure to mitigate the spread of dengue disease and in establishing the most efficacious approaches for translating this knowledge into practical control measures. Open access paper: journals.plos.org

AI evidence extraction

Main findings

In this experiment (30 eggs; baseline vs 900 MHz vs 18 GHz; each tested in triplicate), the 900 MHz group had the highest reported hatching rate (79 ± 10.54%; p = 0.87) and the lowest reported adult emergence rate (33 ± 2.77%). The authors report a statistically significant difference between groups in their analysis (p = 0.03) and conclude that RF exposure may alter aquatic-phase development and life cycle characteristics.

Outcomes measured

• Egg morphology sensitivity (qualitative)
• Hatching rate
• Development time
• Larval numbers
• Pupation period
• Adult emergence rate

Limitations

• Small sample size (30 eggs total)
• Exposure details such as power density/SAR and exposure duration are not provided in the abstract
• Baseline condition is not clearly defined in the abstract
• Some statements in the abstract appear internally inconsistent regarding adult emergence in the 900 MHz group
• Findings are from an insectarium setting and may not generalize to other conditions or species

{
    "publication_year": 2024,
    "study_type": "animal",
    "exposure": {
        "band": "RF",
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "Aedes aegypti (mosquito) eggs/larvae developing to adults",
    "sample_size": 30,
    "outcomes": [
        "Egg morphology sensitivity (qualitative)",
        "Hatching rate",
        "Development time",
        "Larval numbers",
        "Pupation period",
        "Adult emergence rate"
    ],
    "main_findings": "In this experiment (30 eggs; baseline vs 900 MHz vs 18 GHz; each tested in triplicate), the 900 MHz group had the highest reported hatching rate (79 ± 10.54%; p = 0.87) and the lowest reported adult emergence rate (33 ± 2.77%). The authors report a statistically significant difference between groups in their analysis (p = 0.03) and conclude that RF exposure may alter aquatic-phase development and life cycle characteristics.",
    "effect_direction": "mixed",
    "limitations": [
        "Small sample size (30 eggs total)",
        "Exposure details such as power density/SAR and exposure duration are not provided in the abstract",
        "Baseline condition is not clearly defined in the abstract",
        "Some statements in the abstract appear internally inconsistent regarding adult emergence in the 900 MHz group",
        "Findings are from an insectarium setting and may not generalize to other conditions or species"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "stance": "concern",
    "stance_confidence": 0.61999999999999999555910790149937383830547332763671875,
    "summary": "This PLoS One animal study exposed 30 Aedes aegypti eggs to RF radiation at baseline, 900 MHz, or 18 GHz (triplicate tests) and tracked hatching and development to adult emergence. The 900 MHz group showed the highest reported hatching rate, while also showing the lowest reported adult emergence rate, and the authors report a significant difference between groups in statistical testing. The authors conclude that RF exposure may affect egg morphology sensitivity and aquatic-phase development, potentially altering the mosquito life cycle.",
    "key_points": [
        "The study examined RF exposure effects on Aedes aegypti development from egg through adult emergence.",
        "Thirty eggs were exposed under three conditions: baseline, 900 MHz, and 18 GHz, with each frequency tested in triplicate.",
        "Daily observations assessed hatching responses, development times, larval numbers, and pupation periods.",
        "The 900 MHz group had the highest reported hatching rate (79 ± 10.54%), though the reported p-value for this comparison was 0.87.",
        "The 900 MHz group had the lowest reported adult emergence rate (33 ± 2.77%) in the results section.",
        "The authors report a statistically significant difference between groups in their analysis (p = 0.03).",
        "The abstract contains potentially conflicting statements about whether 900 MHz increased adult emergence, indicating possible reporting inconsistency."
    ],
    "categories": [
        "Insects & Ecology",
        "RF-EMF Bioeffects",
        "Laboratory Studies"
    ],
    "tags": [
        "Aedes aegypti",
        "Mosquito Development",
        "Radiofrequency Exposure",
        "900 MHz",
        "18 GHz",
        "Egg Hatching",
        "Adult Emergence",
        "Insectarium Study",
        "Life Cycle Effects"
    ],
    "keywords": [
        "Aedes aegypti",
        "RF-EMF",
        "radiofrequency",
        "900 MHz",
        "18 GHz",
        "hatching rate",
        "adult emergence",
        "development"
    ],
    "suggested_hubs": [],
    "social": {
        "tweet": "PLoS One (2024) exposed Aedes aegypti eggs to RF at baseline, 900 MHz, or 18 GHz and tracked development. The 900 MHz group showed the highest reported hatching rate, while adult emergence was reported as lowest; authors report a significant between-group difference (p=0.03).",
        "facebook": "A 2024 PLoS One lab study exposed Aedes aegypti eggs to RF radiation (baseline vs 900 MHz vs 18 GHz) and monitored hatching and development through adult emergence. The authors report differences across groups and conclude RF exposure may influence aquatic-phase development, though some abstract statements about adult emergence appear inconsistent.",
        "linkedin": "A 2024 PLoS One experimental study assessed RF exposure (baseline, 900 MHz, 18 GHz) on Aedes aegypti development from egg to adult. The authors report group differences (including a significant between-group result, p=0.03) and suggest RF exposure may alter developmental processes, with limited exposure-detail reporting in the abstract."
    }
}

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