This report describes the presence of Aedes albopictus Skuse (Diptera: Culicidae) in Yucatan Peninsula and represents the first record of the Asian tiger invasive mosquito in Campeche State, ...southeastern Mexico. We collected specimens using 11,326 ovitraps put into houses of urban and rural areas, as part of the entomological surveillance by the local Ministry of Health from January 2019 to February 2020. We found Ae. albopictus in five of the 12 municipalities of Campeche (San Francisco de Campeche, Tenabo, Hecelchakán, Calkíni and Escárcega). We record 68 positive ovitraps and 226 Ae. albopictus larvae. This finding increases the number of mosquito species recorded in Campeche, Mexico, and possibly the potential for 22 arbovirus transmission.
The Asian tiger mosquito, Aedes albopictus (Skuse) (Diptera: Culicidae), is an invasive species and a vector of numerous human pathogens, including chikungunya, dengue, yellow fever, and Zika ...viruses. This mosquito had been reported from 36 geographic locations in Mexico by 2005, increasing to 101 locations by 2010 and 501 locations (spanning 16 states) by 2016. Here we modeled the occupied niche for Ae. albopictus in Mexico to characterize the environmental conditions related to its presence, and to generate updated environmental suitability maps. The predictors with the greatest contribution to characterizing the occupied niche for Ae. albopictus were NDVI and annual mean temperature. We also estimated the environmental suitability for Ae. albopictus in regions of the country where it has not been documented yet, by means of: 1) transferring its occupied niche model to these regions and 2) modeling its fundamental niche using global data. Our models will help vector control and public health institutions to identify areas where Ae. albopictus has not yet been recorded but where it may be present. We emphasize that most of Mexico has environmental conditions that potentially allow the survival of Ae. albopictus, which underscores the need for systematic mosquito monitoring in all states of the country.
Zika cases have been reported in 29 out of the 32 states of Mexico. Information regarding which mosquito species might be driving Zika virus transmission/maintenance in nature must be regularly ...updated. From January 2017 to November 2018, mosquitoes were collected indoors and outdoors using the CDC backpack aspirator in urban and semi-urban areas with evidence of mosquito-borne disease transmission. 3873 mosquito pools were tested for Zika infection using the CDC Trioplex real-time RT-PCR. For each collected specie, maximum likelihood estimator of infection rate (MLE) was estimated. Results showed 492 mosquito pools positive for Zika virus RNA. The majority of the positive pools were Aedes (Stegomyia) aegypti (Linnaeus) (54.6%, MLE = 19) (males and females) and Culex (Culex) quinquefasciatus (Say) (19.5%, MLE = 16.8). For the first time, ZIKV infection was detected in Ae. (Georgecraigius) epactius (Dyar and Knab) (MLE = 17.1), Cx. (Melanoconion) erraticus (Dyar and Knab) (MLE = non-estimable), Culiseta (Culiseta) inornata (Williston) (MLE = non estimable), and Cs (Cs.) particeps (Adams) (MLE = 369.5). Other detected species were: Ae. (Stg.) albopictus (Skuse) (MLE = 90.5), Cx. (Cx.) coronator s.l. (Dyar and Knab) (MLE = 102.8) and Cx. (Cx.) tarsalis (Coquillett) (MLE = 117.2). However, our results do not allow for the incrimination of these species as vectors of ZIKV. Routine surveillance should start to consider other mosquito species across the taxonomic spectrum of the Culicidae.
A total of 194 specimens were collected (160 larvae, 34 pupae) representing 6 species from 4 genera (Aedes aegypti, Ae. scapularis, Culex coronator, Cx. nigripalpus, Haemagogus anastasionis, and ...Limatus durhamii). In the study, a total of 18 larvae of Li. durhamii (9.28%) were collected in natural and artificial breeding sites in the municipalities of Campeche (3), Escárcega (6), Hecelchakán (6), and Tenabo (3). We report here the first collection record of Li. durhamii for the state of Campeche in southern Mexico. Further studies are necessary to investigate the geographic distribution of Li. durhamii throughout the country.
Con el fin de actualizar el listado de mosquitos selváticos en Colima, ubicada en la costa oeste de México, se llevó a cabo una colecta entomológica en 33 sitios de muestreo con cebo humano, trampas ...CDC cebadas con CO2 y aspirador mecánico durante el año 2007. En total se recolectaron 3 076 mosquitos, de los cuales las especies más abundantes fueron Aedes taeniorhynchus, A. trivittatus y Deinocerites pseudes. Los sitios costeros, con clima más cálido y menor altura sobre el nivel del mar mostraron mayor densidad de mosquitos. Las especies más abundantes presentaron una distribución de tipo agregado y se encontraron 18 especies no registradas en Colima. Algunas de las especies encontradas son de importancia en salud pública, por lo que se sugiere incluir la vigilancia entomológica en zonas silvestres y localidades escasamente pobladas.
In order to update the checklist of wild mosquitoes in the state of Colima, in the western coast of Mexico, an entomological survey was conducted in 33 sampling sites using human bait, CDC traps with CO2 and mechanical aspirator during 2007. A total of 3 076 mosquitoes were collected, of which the most abundant species were: Aedes taeniorhynchus, A. trivittatus and Deinocerites pseudes. Coastal sites, with higher temperature and lower elevation above sea level showed the highest densities of mosquitoes. The most abundant species had an aggregated distribution and there were 18 species previously unrecorded for Colima. Some of the species found are of public health importance, therefore, it is suggested to include undisturbed places and sparcely populated settlements in entomological surveillance.
This report describes the presence of Aedes albopictus Skuse (Diptera: Culicidae) in Yucatan Peninsula and represents the first record of the Asian tiger invasive mosquito in Campeche State, ...southeastern Mexico. We collected specimens using 11,326 ovitraps put into houses of urban and rural areas, as part of the entomological surveillance by the local Ministry of Health from January 2019 to February 2020. We found Ae. albopictus in five of the 12 municipalities of Campeche (San Francisco de Campeche, Tenabo, Hecelchakan, Calkini and Escarcega). We record 68 positive ovitraps and 226 Ae. albopictus larvae. This finding increases the number of mosquito species recorded in Campeche, Mexico, and possibly the potential for 22 arbovirus transmission. Key words: Aedes albopictus, surveillance, ovitraps, Campeche, Mexico
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