Article
Entomology
Eunice Nayeli Martinez-Garcia, Esteban E. Diaz-Gonzalez, Carlos F. Marina, J. Guillermo Bond, Jorge J. Rodriguez-Rojas, Gustavo Ponce-Garcia, Rosa M. Sanchez-Casas, Ildefonso Fernandez-Salas
Summary: Diseases transmitted by Aedes mosquitoes are a growing global concern. The Sterile Insect Technique (SIT) is a strategy for controlling mosquito populations, and egg storage is essential in SIT programs. This study found that two moisturizing substances, hydrolyzed collagen and Hyalurosmooth(R), can prolong the viability of Aedes mosquito eggs, showing promise in mass rearing insect production for vector control.
Article
Biotechnology & Applied Microbiology
H. Yamada, H. Maiga, C. Kraupa, W. Mamai, N. S. Bimbile Somda, A. Abrahim, T. Wallner, J. Bouyer
Summary: The success of the sterile insect technique (SIT) depends on the sterility and mating success of the factory-reared sterile males. The quality of these males can be improved by reducing stress factors encountered during rearing, handling, and irradiation. Reliable and standard irradiation protocols are necessary to achieve consistent sterility levels. Immobilization methods like chilling and nitrogen exposure are commonly used, but they have varying effects on the irradiation dose-response and male quality parameters. Chilling does not harm longevity and flight ability when carefully controlled, while irradiation in nitrogen reduces sterility induction. However, exposure to nitrogen negatively impacts flight ability. These findings will help in standardizing and optimizing irradiation protocols for SIT to control medically significant mosquito populations.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Entomology
Hanano Yamada, Benewende Aristide Kabore, Nanwintoum Severin Bimbile Somda, Nonhlanhla L. L. Ntoyi, Chantel Janet de Beer, Jeremy Bouyer, Carlos Caceres, Robert L. L. Mach, Yeudiel Gomez-Simuta
Summary: The sterile insect technique (SIT) is an environmentally friendly and species-specific method of pest control that involves mass production of target insects in a factory and sterilizing them using irradiation, typically gamma rays. As gamma sources become more difficult and expensive to obtain, and regulations surrounding their use become stricter, there is growing interest in alternative irradiation methods such as X-rays. A recent study found that X-rays can be used effectively to sterilize major SIT target insect species, making X-ray units suitable for small-to-medium-sized SIT programs.
Article
Immunology
Yusnita Mirna Anggraeni, Triwibowo Ambar Garjito, Mega Tyas Prihatin, Sri Wahyuni Handayani, Kusumaningtyas Sekar Negari, Ary Oktsari Yanti, Muhammad Choirul Hidajat, Dhian Prastowo, Tri Baskoro Tunggul Satoto, Sylvie Manguin, Laurent Gavotte, Roger Frutos
Summary: Chikungunya virus has undergone a genotype replacement in Indonesia, with the Asian-Pacific genotype replacing the Asian genotype. The study raises questions about the mechanisms behind this rapid and massive replacement.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Jordan Ahn, Marianne Sinka, Seth Irish, Sarah Zohdy
Summary: Anopheles stephensi, an invasive malaria vector native to South Asia and the Arabian Peninsula, was detected in Djibouti's seaport, followed by Ethiopia, Sudan, Somalia, and Nigeria. Bilateral maritime trade data was used to identify at-risk countries and develop prioritization lists based on the likelihood of introduction. Sudan and Djibouti were ranked as the top two countries with the highest likelihood of An. stephensi introduction through maritime trade. Network analysis highlighted potential introduction pathways and identified countries for surveillance and control efforts.
SCIENTIFIC REPORTS
(2023)
Article
Biology
Krithika Venkataraman, Nadav Shai, Priyanka Lakhiani, Sarah Zylka, Jieqing Zhao, Margaret Herre, Joshua Zeng, Lauren A. Neal, Henrik Molina, Li Zhao, Leslie B. Vosshall
Summary: Female Aedes aegypti mosquitoes face climate challenges due to rising global temperatures, causing suboptimal conditions for egg-laying. In the laboratory, under drought-like conditions, these mosquitoes retain mature eggs until suitable conditions for laying eggs arise. The genes tweedledee and tweedledum are found to play a crucial role in this extended egg retention.
Article
Biotechnology & Applied Microbiology
Nanwintoum Severin Bimbile Somda, Hanano Yamada, Carina Kraupa, Wadaka Mamai, Hamidou Maiga, Simran Singh Kotla, Thomas Wallner, Claudia Martina, Jeremy Bouyer
Summary: This study investigated the use of nitrogen in the irradiation of adult Aedes albopictus and Ae. aegypti. The results showed that nitrogen treatment improved the longevity of irradiated males but slightly reduced their flight ability. Nitrogen treatment was found to be a reliable method for adult mosquito immobilization.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Parasitology
Maria C. Carrasquilla, Mario I. Ortiz, Cielo Leon, Silvia Rondon, Manisha A. Kulkarni, Benoit Talbot, Beate Sander, Heriberto Vasquez, Juan M. Cordovez, Camila Gonzalez
Summary: A study conducted in Ibague, Colombia found that Aedes aegypti and Aedes albopictus mosquitoes are vectors for dengue, Zika, and chikungunya viruses, with dengue and chikungunya circulating in the area but Zika virus remaining undetected. The research results showed that mosquitoes were mainly found in low socioeconomic areas and indoors, with a higher number of female mosquitoes that have fed on human blood, indicating a high risk of arbovirus transmission in Ibague.
PARASITES & VECTORS
(2021)
Review
Immunology
Zhuanzhuan Liu, Qingxin Zhang, Liya Li, Junjie He, Jinyang Guo, Zichen Wang, Yige Huang, Zimeng Xi, Fei Yuan, Yiji Li, Tingting Li
Summary: This review explores the correlations between temperature and dengue epidemics, including the distribution and development of Aedes mosquitoes, the structure of DENV, and the vector competence of Aedes mosquitoes. Additionally, it discusses the immune and metabolic mechanism through which temperature affects the vector competence of Aedes mosquitoes to transmit DENV.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Article
Immunology
Minghui Zhao, Xin Ran, Dan Xing, Yun Liao, Wei Liu, Yu Bai, Qiang Zhang, Kan Chen, Lan Liu, Mingyu Wu, Zu Ma, Jian Gao, Hengduan Zhang, Tongyan Zhao
Summary: This study focused on the knockdown resistance (kdr) genes of Aedes aegypti and Aedes albopictus mosquitoes, investigating their mutations and analyzing their haplotype and evolutionary diversity. The results may help identify the evolutionary trend of insecticide resistance and improve the efficiency of biological vector control.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Article
Parasitology
Keshava Mysore, Longhua Sun, Joseph B. Roethele, Ping Li, Jessica Igiede, Joi K. Misenti, Molly Duman-Scheel
Summary: The investigation identified the essential role of the MtnB gene in survival of female mosquito larvae, which could potentially lead to improved production of healthy adult male mosquitoes through targeted gene silencing.
PARASITES & VECTORS
(2021)
Article
Parasitology
Minghui Zhao, Xin Ran, Yu Bai, Zu Ma, Jian Gao, Dan Xing, Chunxiao Li, Xiaoxia Guo, Xianyi Jian, Wei Liu, Yun Liao, Kan Chen, Hengduan Zhang, Tongyan Zhao
Summary: This study investigated the genetic diversity and differentiation of Ae. aegypti and Ae. albopictus in Hainan Island and the Leizhou Peninsula, China. The results showed that Ae. albopictus had higher genetic diversity than Ae. aegypti. These findings are important for controlling arboviral diseases transmitted by mosquitoes and may support the elimination of Ae. aegypti in China.
PARASITES & VECTORS
(2023)
Article
Parasitology
Muhammad Sajjad Sarwar, Nusrat Jahan, Azeem Ali, Hafiz Kamran Yousaf, Iqra Munzoor
Summary: The study found that Wolbachia strain wAlbB has the potential to control the spread of dengue fever in Aedes aegypti populations by producing a strong cytoplasmic incompatibility effect, with limited impact on the host.
PARASITES & VECTORS
(2022)
Article
Microbiology
Wendy S. Salinas, Teresa P. Feria-Arroyo, Christopher J. Vitek
Summary: The study found that Aedes albopictus had higher susceptibility to insecticides compared to Aedes aegypti, and mosquitoes kept at different temperatures exhibited varying levels of susceptibility to insecticides. The results suggest that public health officials should consider the temperature effects when controlling mosquitoes with insecticides.
Article
Parasitology
Rasika Dalpadado, Deepika Amarasinghe, Nayana Gunathilaka, Nalin Ariyarathna
Summary: This study investigated the bionomics aspects of Aedes aegypti and Aedes albopictus in Sri Lanka, including breeding, resting, host-seeking, and feeding preferences. The results showed that Aedes aegypti predominantly breeds in temporary removals and discarded non-degradables, while Aedes albopictus mainly oviposits in natural locations and temporary removals. Adult mosquitoes of both species tend to rest indoors, with Aedes albopictus being more prevalent in outdoor vegetation. The biting patterns of these mosquitoes exhibit a typical diurnal rhythm, with two peaks of activity in the morning and afternoon.
PARASITES & VECTORS
(2022)
Article
Entomology
Li Xu, Hong-Bo Jiang, Kai-Yue Tang, Ying Yan, Marc F. Schetelig, Jin-Jun Wang
Summary: Olfaction plays a vital role in insect behavior, and the BdorOrco gene in the oriental fruit fly is essential for odor perception and behavior. Mutant flies with edited BdorOrco gene show reduced perception and behavioral defects.
Article
Biotechnology & Applied Microbiology
Enkelejda Velo, Fabrizio Balestrino, Perparim Kadriaj, Danilo Oliveira Carvalho, Ahmadou Dicko, Romeo Bellini, Arianna Puggioli, Dusan Petric, Antonios Michaelakis, Francis Schaffner, David Almenar, Igor Pajovic, Alfred Beqirllari, Migel Ali, Gjergji Sino, Elton Rogozi, Vjola Jani, Adelina Nikolla, Tanja Porja, Thanas Goga, Elena Falcua, Mihaela Kavran, Dubravka Pudar, Ognyan Mikov, Nadya Ivanova-Aleksandrova, Aleksandar Cvetkovikj, Muhammet Mustafa Akiner, Rados Mikovic, Lindita Tafaj, Silva Bino, Jeremy Bouyer, Wadaka Mamai
Summary: This study conducted a mark-release-recapture experiment with sterilized Asian tiger mosquitoes in Albania to estimate their dispersal capacity and field performance. The experiment provided valuable data for decision-making and planning of pilot sterile insect technique trials. Additionally, the study found that both BG traps and human landing catches were effective methods for monitoring adult mosquitoes.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Fabrizio Balestrino, Arianna Puggioli, Marco Malfacini, Alessandro Albieri, Marco Carrieri, Jeremy Bouyer, Romeo Bellini
Summary: Mark-release-recapture (MRR) trials were conducted in Northern Italy to evaluate the survival, dispersal, and mating capacity of radio-sterilized Aedes albopictus males. Environmental factors such as barriers, shading, and vegetation seemed to have a greater influence on the survival and dispersal rates than weather parameters. The study confirmed a linear relationship between the daily survival rate of sterile males and relative humidity, and observed different dispersal capacities in low- and high-vegetated areas. The quality of the released males was not affected by irradiation and marking procedures. The data estimated different population densities of A. albopictus in the study areas.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Infectious Diseases
Nonhlanhla L. Ntoyi, Thabo Mashatola, Jeremy Bouyer, Carina Kraupa, Hamidou Maiga, Wadaka Mamai, Nanwintoum S. Bimbile-Somda, Thomas Wallner, Danilo O. Carvalho, Givemore Munhenga, Hanano Yamada
Summary: This study evaluated a mutant strain carrying a transgenic marker, which was crossed with a local strain in South Africa, as a reliable sexing tool.
Article
Multidisciplinary Sciences
Ronan Brouazin, Iris Claudel, Renaud Lancelot, Guillaume Dupuy, Louis-Clement Gouagna, Marlene Dupraz, Thierry Baldet, Jeremy Bouyer
Summary: This study provides insights into monitoring Aedes populations in La Reunion and suggests using black plastic ovitraps placed in vacoa trees for effective detection. The ovitraps located in the tree canopy showed higher detection and apparent density for Ae. aegypti, while Ae. albopictus showed a preference for blotting paper as the oviposition surface.
SCIENTIFIC REPORTS
(2022)
Article
Entomology
Hanano Yamada, Benewende Aristide Kabore, Nanwintoum Severin Bimbile Somda, Nonhlanhla L. L. Ntoyi, Chantel Janet de Beer, Jeremy Bouyer, Carlos Caceres, Robert L. L. Mach, Yeudiel Gomez-Simuta
Summary: The sterile insect technique (SIT) is an environmentally friendly and species-specific method of pest control that involves mass production of target insects in a factory and sterilizing them using irradiation, typically gamma rays. As gamma sources become more difficult and expensive to obtain, and regulations surrounding their use become stricter, there is growing interest in alternative irradiation methods such as X-rays. A recent study found that X-rays can be used effectively to sterilize major SIT target insect species, making X-ray units suitable for small-to-medium-sized SIT programs.
Article
Biochemistry & Molecular Biology
Lucas Henrique Figueiredo Prates, Maximilian Merlau, Johanna Ruehl-Teichner, Marc F. F. Schetelig, Irina Haecker
Summary: Double-stranded RNA (dsRNA) is a natural defense mechanism that can silence specific genes through RNA interference (RNAi). It has potential as a sustainable and ecofriendly alternative for pest control and disease vector management. However, cost-efficient production of dsRNA is needed for further research and development. In this study, we optimized an acidic phenol-based protocol for low-cost extraction of dsRNA from bacteria, with high yield and no viable bacterial cells remaining in the purified dsRNA. Comparative assessments confirmed the cost-efficiency of our optimized protocol.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Parasitology
Mahamat Hissene Mahamat, Adeline Segard, Jean-Baptiste Rayaisse, Rafael Argiles-Herrero, Andrew Gordon Parker, Philippe Solano, Adly Mohamed Mohamed Abd-Alla, Jeremy Bouyer, Sophie Ravel
Summary: Based on experimental data, the research found that sterile male tsetse flies cannot transmit Trypanosoma brucei brucei. The reliable evidence indicates that the release of large numbers of sterile male flies does not increase the potential risk of tsetse flies transmitting the parasite.
PARASITES & VECTORS
(2023)
Editorial Material
Parasitology
Jeremy Bouyer
Summary: Recent research by Evans et al. confirms compensation and overcompensation in Aedes mosquitoes under field conditions, where equal or increased densities of emerging adults may result from reduced larval densities. This article discusses the consequences of applying the sterile insect technique and provides recommendations to avoid counter-productive effects.
TRENDS IN PARASITOLOGY
(2023)
Article
Genetics & Heredity
Germano Sollazzo, Georgia Gouvi, Katerina Nikolouli, Roswitha A. Aumann, Haig Djambazian, Mark A. Whitehead, Pierre Berube, Shu-Huang Chen, George Tsiamis, Alistair C. Darby, Jiannis Ragoussis, Marc F. Schetelig, Kostas Bourtzis
Summary: Genetic sexing strains (GSS) are an important tool in sterile insect technique (SIT) applications. The tsl gene and the wp gene have been used as markers in the successful Ceratitis capitata VIENNA 8 GSS. This study characterized and analyzed the genomic region of these genes in wild-type and tsl mutant medfly strains.
G3-GENES GENOMES GENETICS
(2023)
Article
Entomology
Hamidou Maiga, Mame Thierno Bakhoum, Wadaka Mamai, Gorgui Diouf, Nanwintoum Severin Bimbile Somda, Thomas Wallner, Claudia Martina, Simran Singh Kotla, Odet Bueno Masso, Hanano Yamada, Bazoumana B. D. Sow, Assane Gueye Fall, Jeremy Bouyer
Summary: This study developed and assessed a novel method for long-distance shipments of sterile male mosquitoes from the laboratory to the field. The new mass transport protocol allowed the successful shipment of 50,000 sterile male mosquitoes for up to four days, maintaining good survival rates and flight ability. This novel system can be used worldwide for shipping sterile males for journeys of two to four days.
Article
Biotechnology & Applied Microbiology
Ying Yan, Bashir Hosseini, Annemarie Scheld, Srilakshmi Pasham, Tanja Rehling, Marc F. Schetelig
Summary: Genetic control strategies, such as RIDL and TESS, based on Tet-off systems regulated by antibiotics like Tet and Dox have been shown effective in the laboratory and field. In this study, Tet-off constructs with a reporter gene cassette mediated by a 2A peptide were generated and their expression in Drosophila S2 cells was evaluated using different concentrations and types of antibiotics. The impact of Tet and Dox on a Drosophila suzukii wild-type strain and female-killing strains employing TESS was also examined. The results demonstrated dose-dependent control of Tet-off construct expression by antibiotics and the potential for survival of females in the FK strains under specific antibiotic treatments.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Biology
Celia Lutrat, Myriam Burckbuchler, Roenick Proveti Olmo, Remy Beugnon, Albin Fontaine, Omar S. S. Akbari, Rafael Argiles-Herrero, Thierry Baldet, Jeremy Bouyer, Eric Marois
Summary: Four new transgenic sexing strains have been developed to identify and sort male and female Aedes mosquitoes using fluorescence markers linked to the sex-determining loci. These strains provide a more efficient and cost-effective method for controlling disease vectoring mosquitoes. They enable faster and more accurate sex separation, allowing for the production of non-transgenic males. This technology can greatly enhance control programs against these important vectors.
COMMUNICATIONS BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Irina Haecker, Tanja Rehling, Henrik Schlosser, Daniela Mayorga-Ch, Mara Heilig, Ying Yan, Peter A. Armbruster, Marc F. Schetelig
Summary: Utilizing capped mRNA as a source of transposase or recombinase can enhance the efficiency of transgenesis in insects, particularly in hard-to-transform insect models. There is no difference in efficiency between plasmid and mRNA in recombination experiments.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Parasitology
Hanano Yamada, Hamidou Maiga, Carina Kraupa, Nanwintoum Severin Bimbile Somda, Wadaka Mamai, Thomas Wallner, Jeremy Bouyer
Summary: Balancing process efficiency and adult sterile male biological quality is crucial in the success of the sterile insect technique against insect pest populations. For SIT against mosquitoes, optimizing the irradiation step and considering dose fractionation can significantly improve male mating competitiveness. Fractionating the dose showed positive effects on male longevity and mating competitiveness, but the added labor in SIT programs for mosquito vector management may not outweigh the benefits.