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Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán

2022, Number 2

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Rev Biomed 2022; 33 (2)

Surveillance of the Black Salt Marsh Mosquito, Aedes taeniorhynchus, in Merida City, Yucatan, Mexico

Baak-Baak CM, Cigarroa-Toledo N, Cetina-Trejo R, Talavera-Aguilar L, Tzuc-Dzul JC, Torres-Chablé O, García-Rejón JE

Language: Spanish
References: 20
Page: 79-84
PDF size: 131.91 Kb.


ABSTRACT

Introduction. The mosquito Ae. taeniorhynchus is native to America. It has the ability to transmit zoonotic arboviruses. Immature stages grow in coastal floodplain habitats such as brackish waterways and marshes. They generally invade rural and urban areas during the rainy season.
Objective. To determine the temporal distribution and trophic status of Ae. taeniorhynchus in the city of Merida, Yucatan, Mexico.
Materials and methods. Adult mosquitoes were collected from homes (n = 40) between August 2016 and May 2017. External examination of the female mosquitos' abdomens revealed their trophic status, which was categorised as non-fed, fed, sub-gravid, and gravid.
Results. In houses in the city of Mérida, 1,747 adult Ae. taeniorhynchus were captured, of which 570 (32.63%) were males and 1,177 (67.37%) were females. There was a significant statistical difference in the number of females captured per season (p≤0.01). In the rainy season, 93.80% of the Ae. taeniorhynchus females were captured. The trophic status was constituted mainly by non-fed females (n = 492) and gravid females (n = 363).
Conclusion. During the wet season, Ae. taeniorhynchus was frequently captured. Although it is best known for its aggressive bites, it also offers a risk of transmitting zoonotic arboviruses.


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