Assessment of Lethal, Sublethal, and Transgenerational Effects of Beauveria Bassiana on the Demography of Aedes Albopictus (Culicidae: Diptera).

Rana Fartab Shoukat,Muhammad Shakeel,Shoaib Freed,Fengliang Jin,Yuxin Zhang,Xiaoxia Xu,Junaid Zafar

doi:10.3390/insects11030178

Rana Fartab Shoukat, Muhammad Shakeel + Show 5 more

Open Access

https://doi.org/10.3390/insects11030178

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Abstract

Dengue fever is one of the most rapidly spreading arthropod-borne diseases. Diurnal vectorial properties of Aedes albopictus contribute to the dispersion of the dengue viruses. Frequent and injudicious use of synthetic insecticides led to the evolution of resistant phenotypes in Ae. albopictus which necessitates the search for an alternative of current control strategies. Developing a long-lasting and environmentally safe tactic based on knowledge of ecology and population dynamics of Ae. albopictus is critical. Therefore, with a view towards biological control and ecology, the effect of entomopathogenic fungi (EPF) Beauveria bassiana on filial and first filial generations of Ae. albopictus were studied. Investigations showed 87.5% adulticidal activity leading to altered fecundity and adult longevity in a filial generation. The lethal (LC50) and sublethal (LC20) concentrations of B. bassiana were applied to filial generation (F0) to study demographic parameters in the first filial generation (F1). Results showed reduced net reproductive rates (Ro) intrinsic rate of increase (r), and mean generation time (T) compared to uninfected controls. Prolonged larval and pupal duration were observed followed by reduced longevity of male and female adults. Fecundity in the first filial generation was significantly changed with the lethal and sublethal concentrations of B. bassiana. Thus, it is concluded that B. bassiana has the potential to play a vital role in integrated mosquito management strategies.

Highlights

IntroductionMosquito-borne diseases have been a primary concern for the human population for a long time
Mosquito-borne diseases have been a primary concern for the human population for a long time.Due to Aedes albopictus, more than 100 nations in tropical and subtropical regions around the world are confronting the dangers of dengue fever, yellow fever, and chikungunya [1]
Diurnal and repeated blood-feeding behavior of Ae. albopictus makes it more dangerous than other mosquito species, it facilitate the rapid transmission of diseases [2]

Summary

Introduction

Mosquito-borne diseases have been a primary concern for the human population for a long time. Due to Aedes albopictus, more than 100 nations in tropical and subtropical regions around the world are confronting the dangers of dengue fever, yellow fever, and chikungunya [1]. Diurnal and repeated blood-feeding behavior of Ae. albopictus makes it more dangerous than other mosquito species, it facilitate the rapid transmission of diseases [2]. Past injudicious use of synthetic insecticides against larvae and adults of mosquito led to the evolution of resistant phenotypes [3], environmental contamination, and human health risks. Indoor use of synthetic insecticides against medically-important pests like mosquito negatively impact human health [4,5]. Non-target and broad spectrum insecticides negatively impact biodiversity [6,7,8] and life cycles of non-target insects [9,10,11]

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