Article
Microbiology
Mayra A. Gomez-Govea, Maria de Lourdes Ramirez-Ahuja, Yamili Contreras-Perera, Armando J. Jimenez-Camacho, Gabriel Ruiz-Ayma, Olga Karina Villanueva-Segura, Gerardo de Jesus Trujillo-Rodriguez, Ivan Delgado-Enciso, Margarita L. Martinez-Fierro, Pablo Manrique-Saide, Henry Puerta-Guardo, Adriana E. Flores-Suarez, Gustavo Ponce-Garcia, Iram P. Rodriguez-Sanchez
Summary: This study characterizes the resident microbiota in a field population of Aedes aegypti mosquitoes and evaluates its role in susceptibility to the insecticides permethrin and deltamethrin. The results show that the change in microbiota modifies the response of mosquitoes to permethrin.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Entomology
Sierra M. Schluep, Eva A. Buckner
Summary: Research has shown that 55% of the 20 Florida Ae. aegypti populations tested exhibit metabolic resistance, with 73% showing significantly increased mortality when exposed to a combination of DEF and permethrin, 64% with PBO and permethrin, and 55% with DM and permethrin. These findings suggest that metabolic enzyme inhibitors like DEF and DM could be effective additives in permethrin products to combat resistant Ae. aegypti mosquitoes.
Article
Parasitology
Sebastien Boyer, Pierre-Olivier Maquart, Kalyan Chhuoy, Kimhuor Suor, Moeun Chhum, Kimly Heng, Sokkeang Leng, Didier Fontenille, Sebastien Marcombe
Summary: This study suggests that Bacillus thuringiensis ser. israelensis (Bti) can be considered as a serious alternative to the larvicide temephos for controlling Aedes aegypti larvae, and the carbamate adulticides propoxur and bendiocarb should be used instead of widely used pyrethroid insecticides for controlling adult Aedes aegypti on land under mosaic farming and crop rotation in Cambodia, as the insects have shown resistance to the latter type of insecticide. Research on insecticide resistance and innovative and effective vector control strategies should be prioritized in public health in Cambodia.
PARASITES & VECTORS
(2022)
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
Entomology
Haley A. Abernathy, Brandon D. Hollingsworth, Dana A. Giandomenico, Kara A. Moser, Jonathan J. Juliano, Natalie M. Bowman, Phillip J. George, Michael H. Reiskind, Ross M. Boyce
Summary: This study compared the presence of knock-down resistance (kdr) mutations in Aedes albopictus mosquitoes from Fort Bragg and Wake County, North Carolina. The study found highly focal resistance in one collection site in Wake County, possibly due to peri-domestic mosquito control activities using pyrethroid insecticides. More comprehensive surveillance is needed to monitor the emergence and spread of resistance.
JOURNAL OF MEDICAL ENTOMOLOGY
(2022)
Article
Entomology
Tse-Yu Chen, Chelsea T. Smartt, Dongyoung Shin
Summary: Pyrethroids, commonly used insecticides against mosquitoes, face worldwide resistance that threatens mosquito control. Resistance is linked to mutations in the voltage gated sodium channel gene. A study on a permethrin-resistant Aedes aegypti population revealed higher permethrin resistance levels and increased threat of disease transmission. The population showed longer survival and higher dissemination rates for dengue virus, impacting vectorial capacity and warranting global concern.
Article
Agronomy
Lisa M. Rigby, Brian J. Johnson, Christopher L. Peatey, Nigel W. Beebe, Gregor J. Devine
Summary: Sublethal exposure to permethrin has varied effects on susceptible and resistant Ae. aegypti, impacting factors such as egg viability, blood avidity, mating success, lifespan, fecundity, and host-location success. While susceptible insects show expected detrimental effects, resistant insects demonstrate a less predictable range of responses, including negative effects on longevity and host-location but increases in fecundity and mating competitiveness. Overall, sublethal insecticide exposure is expected to increase the competitiveness of resistant phenotypes, acting as a selection pressure for the evolution of permethrin resistance.
PEST MANAGEMENT SCIENCE
(2021)
Article
Multidisciplinary Sciences
Gonzalo M. Vazquez-Prokopec, Azael Che-Mendoza, Oscar D. Kirstein, Wilberth Bibiano-Marin, Gabriela Gonzalez-Olvera, Anuar Medina-Barreiro, Hector Gomez-Dantes, Norma Pavia-Ruz, Pablo Manrique-Saide
Summary: Preventive indoor residual spraying of insecticides can significantly reduce the indoor density of Aedes aegypti mosquitoes and maintain this reduction for an extended period of time, which has important implications for preventing the spread of Aedes-borne viruses.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Medicinal
Chao Yang, Wansheng Xie, Heqian Zhang, Wenjian Xie, Tiantian Tian, Zhiwei Qin
Summary: Dengue is an acute tropical infectious disease transmitted by mosquitoes, posing a major challenge to global public health. The lack of clinically proven specific drugs for prevention and treatment is mainly due to the incomplete understanding of the pathogenesis of dengue fever.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Public, Environmental & Occupational Health
Daniel Nunez-Avellaneda, Chandra Tangudu, Jacqueline Barrios-Palacios, Ma. Isabel Salazar, Carlos Machain-Williams, Jonathan Cisneros-Pano, Lauren A. McKeen, Bradley J. Blitvich
Summary: The local public health authorities reported nine cases of chikungunya in Mexico in 2019 with none in Guerrero, a coastal state. Testing in Guerrero revealed a significant number of cases that met the WHO definition, indicating a severe underestimation of chikungunya cases in Mexico.
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
(2021)
Article
Public, Environmental & Occupational Health
Mariah L. Scott, Lawrence J. Hribar, Andrea L. Leal, Janet C. McAllister
Summary: The study addresses insecticide resistance in Aedes aegypti in the Florida Keys, revealing varying levels of resistance across different islands with distinct underlying mechanisms. Resistance to Biomist (R) 30+30 was observed, while no resistance was seen to permethrin, indicating possible involvement of PBO or other inert ingredients in resistance. Understanding localized resistance helps in making informed decisions on insecticide selection.
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
(2021)
Article
Biochemistry & Molecular Biology
Claudia A. S. Wyer, Lauren J. Cator, Brian Hollis
Summary: This study investigates the mating strategy and sexual selection in the yellow fever mosquito, Aedes aegypti, and reveals the significant impact of sexual selection on the species' genome.
Article
Chemistry, Multidisciplinary
Stefan N. Rhoades, Philip K. Stoddard
Summary: This study demonstrates that a broad-spectrum insecticide can disrupt orb-weaving spiders' ability to capture mosquitoes, even without killing the spiders, potentially leading to a rapid rebound in mosquito populations. Nonlethal exposure to the pesticide affected the spiders' web reconstruction and prey-capture ability temporarily.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
Fabien Aubry, Sofie Jacobs, Mailis Darmuzey, Sebastian Lequime, Leen Delang, Albin Fontaine, Natapong Jupatanakul, Elliott F. Miot, Stephanie Dabo, Caroline Manet, Xavier Montagutelli, Artem Baidaliuk, Fabiana Gambaro, Etienne Simon-Loriere, Maxime Gilsoul, Claudia M. Romero-Vivas, Van-Mai Cao-Lormeau, Richard G. Jarman, Cheikh T. Diagne, Oumar Faye, Ousmane Faye, Amadou A. Sall, Johan Neyts, Laurent Nguyen, Suzanne J. F. Kaptein, Louis Lambrechts
Summary: The study finds that recent African ZIKV strains have higher transmissibility in mosquitoes and higher lethality in both adult and fetal mice when compared to their Asian counterparts. The authors emphasize the high epidemic potential of African ZIKV strains, suggesting that they may more easily go unnoticed by public health surveillance systems due to their tendency to cause fetal loss rather than birth defects.
NATURE COMMUNICATIONS
(2021)
Article
Entomology
Christopher J. Holmes, Elliott S. Brown, Dhriti Sharma, Matthew Warden, Atit Pathak, Blaine Payton, Quynh Nguyen, Austin Spangler, Jaishna Sivakumar, Jacob M. Hendershot, Joshua B. Benoit
Summary: Female mosquitoes have adapted to bloodfeeding on humans, especially in drier areas. These mosquitoes can quickly rehydrate through bloodfeeding, potentially resulting in altered disease transmission rates. Further research is needed to understand how these mosquitoes process bloodmeals in low humidity conditions.
Article
Entomology
Billy Tene-Fossog, Yvan Gaetan Fotso-Toguem, Nathalie Amvongo-Adjia, Hilary Ranson, Charles S. Wondji
Summary: This study monitored the dynamics of insecticide resistance in malaria vectors in Yaounde over two years. The results showed an escalation in resistance to pyrethroids, with seasonal variations. This has implications for the effectiveness of malaria control strategies.
MEDICAL AND VETERINARY ENTOMOLOGY
(2022)
Article
Entomology
Rosemary S. Lees, Jennifer S. Armistead, Salum Azizi, Edi Constant, Christen Fornadel, John E. Gimnig, Janet Hemingway, Daniel Impoinvil, Seth R. Irish, William Kisinza, Natalie Lissenden, Henry D. Mawejje, Louisa A. Messenger, Sarah Moore, Corine Ngufor, Richard Oxborough, Natacha Protopopoff, Hilary Ranson, Graham Small, Joseph Wagman, David Weetman, Sarah Zohdy, Angus Spiers
Summary: To test the effectiveness and durability of new bed nets, it is necessary to study and test insecticide-resistant mosquitoes. A group of experts collaborated to develop a protocol for standardized monitoring and accurate characterization of resistant mosquitoes, providing valuable guidance for malaria control programs and stakeholders.
Review
Entomology
Alan E. Juache-Villagrana, Victoria Pando-Robles, Selene M. Garcia-Luna, Gustavo Ponce-Garcia, Ildefonso Fernandez-Salas, Beatriz Lopez-Monroy, Iram P. Rodriguez-Sanchez, Adriana E. Flores
Summary: Insects transmit pathogens to crops and humans, posing a threat to public health and economic activities. Insecticides are commonly used to control insects, but their continued use has led to insecticide resistance (IR). It is unclear how IR affects the ability of insects to transmit pathogens, known as vector competence (VC). Studies have shown that IR could enhance, impair, or have no direct effect on VC. Further research is needed to confirm these patterns and their implications for vector control programs.
Article
Entomology
Jessica Williams, Victoria A. Ingham, Marion Morris, Kobie Hyacinthe Toe, Aristide S. Hien, John C. Morgan, Roch K. Dabire, Wamdagogo Moussa Guelbeogo, N'Fale Sagnon, Hilary Ranson
Summary: Targeting mosquitoes with insecticides is an effective method to prevent malaria transmission. Burkina Faso, a country with high malaria burden, is also a hotspot for insecticide resistance evolution. This study establishes laboratory colonies from multiple species of malaria vectors and provides a profile of insecticide resistance in each colony. The findings highlight the importance of screening potential new insecticides against a wide range of mosquito populations and provide valuable insights into the genetic changes driving resistance.
Article
Entomology
Simon P. Sawadogo, Didier A. Kabore, Ezechiel B. Tibiri, Angela Hughes, Olivier Gnankine, Shannon Quek, Abdoulaye Diabate, Hilary Ranson, Grant L. Hughes, Roch K. Dabire
Summary: This study re-evaluated the occurrence of Wolbachia in Anopheles gambiae mosquitoes from Burkina Faso and found a very low prevalence of infection. Only 29 out of 5341 samples analyzed were positive for Wolbachia, representing a prevalence of 0.54%. Phylogenetic analysis suggested these positive samples clustered with supergroup B, with similarity to sequences found in Anopheles from Burkina Faso.
MEDICAL AND VETERINARY ENTOMOLOGY
(2022)
Editorial Material
Anesthesiology
B. Morton, H. Ranson, K. El-Boghdadly
Article
Biology
Iris Wagner, Linda Grigoraki, Peter Enevoldson, Michael Clarkson, Sam Jones, Jane L. L. Hurst, Robert J. J. Beynon, Hilary Ranson
Summary: The rapid evaporative ionisation mass spectrometry (REIMS) method can accurately identify the species and age of mosquitoes, with high accuracy in both laboratory-reared and wild populations.
Article
Infectious Diseases
Saul Lozano, Kevin Pritts, Dagne Duguma, Chris Fredregill, Roxanne Connelly
Summary: Aedes aegypti is one of the most dangerous disease vectors in the world, and the burden of diseases spread by this species has significantly increased in the past 50 years. The use of pesticides for control has led to insecticide resistance, making strategies like using Wolbachia-infected male mosquitoes for intervention desirable.
PLOS NEGLECTED TROPICAL DISEASES
(2022)
Article
Genetics & Heredity
Yvan Fotso-Toguem, Billy Tene-Fossog, Leon M. J. Mugenzi, Murielle J. Wondji, Flobert Njiokou, Hilary Ranson, Charles S. Wondji
Summary: The polymorphisms of CYP6M2 and CYP6P4 were analyzed to detect potential resistance markers in Anopheles coluzzii and Anopheles gambiae. The study found significant overexpression of CYP6M2 and CYP6P4 in resistant mosquitos, and a lower diversity in the upstream region of CYP6P4 potentially associated with resistance.
Article
Entomology
Ronald Maestre-Serrano, Zulibeth Florez-Rivadeneira, Juan M. Castro-Camacho, Eva Soto-Arenilla, Doris Gomez-Camargo, Paula Pareja-Loaiza, Gustavo Ponce-Garcia, Alan E. Juache-Villagrana, Adriana E. Flores
Summary: Current strategies to suppress arbovirus outbreaks include the use of insecticides against larvae and adult mosquitoes. However, the control of Aedes aegypti by insecticides is challenging due to the rapid increase in resistance. In Colombia, pyrethroids have been widely used to control adult forms of Ae. aegypti, but resistance to these insecticides has been detected. Modeling the spatial distribution of resistance and identifying the mechanisms provoking it could enhance vector control programs by classifying areas according to the resistance status and implementing appropriate strategies.
Article
Multidisciplinary Sciences
Jennifer Baltzegar, Michael S. Jones, Martha Willcox, Janine M. Ramsey, Fred Gould
Summary: This study utilized genome-wide single nucleotide polymorphism data to identify fine-scale genetic population structure in the maize weevil. The structure is likely shaped by local adaptation of the insects, human movement and trade of maize in the region, geographic barriers to gene flow, or a combination of these factors.
Article
Multidisciplinary Sciences
Alejandro D. Ricci, Leonel Bracco, Emir Salas-Sarduy, Janine M. Ramsey, Melissa S. Nolan, M. Katie Lynn, Jaime Altcheh, Griselda E. Ballering, Faustino Torrico, Norival Kesper, Juan C. Villar, Ivan S. Marcipar, Jorge D. Marco, Fernan Aguero
Summary: Using high-density peptide arrays, we examined the antibody repertoires of Chagas disease patients and identified numerous diagnostic markers for the disease. This work provides valuable insights for diagnosing and developing serological applications for Chagas disease.
NATURE COMMUNICATIONS
(2023)
Article
Public, Environmental & Occupational Health
Ivan E. Bravo-Ramirez, Angelica Pech-May, Irving Jesus May-Concha, Janine M. Ramsey
Summary: This study aims to systematize, evaluate, and synthesize specific research on the zoonosis caused by Trypanosoma cruzi, its vectors, and Chagas disease (CD) in Mexico. A total of 1,410 original research articles were identified, and 659 were selected for technical evaluation, with 221 rated as the highest quality. Despite the significant increase in knowledge generated in the last two decades in Mexico, evidence gaps remain for public healthcare policy to effectively address, prevent, and control CD in the country.
SALUD PUBLICA DE MEXICO
(2023)
Article
Public, Environmental & Occupational Health
Amaia Izeta-Alberdi, Angelica Pech-May, Ezequiel Tun-Ku, Carlos Jesus Mazariegos-Hidalgo, Sury Antonio Lopez-Cancino, Sleidher Gutierrez, Sergio Albino-Miranda, Keynes de la Cruz-Felix, Jose Manuel Diaz-de la Cruz, Carlos N. Ibarra-Cerdena, Elizabeth Arellano, Marco A. Ocampo, Rachel M. Vallejo, Janine M. Ramsey
Summary: This study aimed to provide primary evidence of Trypanosoma cruzi landscape genetics in the Mexican Neotropics. Trypanosoma cruzi and discrete typing units (DTU) prevalence were analyzed in landscape communities of vectors, wildlife, livestock, pets, and sympatric human populations. Different gene markers showed varying sensitivity in identifying or genotyping T. cruzi, highlighting the heterogeneity among mammal reservoir taxa and triatomine species.
SALUD PUBLICA DE MEXICO
(2023)
Article
Infectious Diseases
Guadalupe Romer, Leonel C. Bracco, Alejandro M. Ricci, Virginia S. Balouz, Luisa Berna, Juan Villar, Janine Ramsey, Melissa Nolan, Faustino A. Torrico, Norival Kesper, Jaime L. Altcheh, Carlos L. Robello, Carlos L. Buscaglia, Fernan L. Aguero
Summary: In this study, the authors conducted in-depth linear B-cell epitope profiling of a polymorphic antigen in Trypanosoma cruzi using multiple immunological methods. They discovered variations in antibody responses to different infecting strains and identified 9 novel antigen variants. These findings have practical implications for the design and evaluation of serotyping strategies for Chagas disease.
PLOS NEGLECTED TROPICAL DISEASES
(2023)