Accepted for/Published in: JMIR Public Health and Surveillance
Date Submitted: Apr 11, 2022
Date Accepted: Jul 30, 2022
Entomological surveillance of Aedes invasive species at higher potential points of entry of Guilan Province, northern Iran: an exploratory report of field study
ABSTRACT
Background:
Background:
Arboviral diseases such as dengue, Zika and chikungunya are emerging global public health concerns transmitted by Aedes aegypti and Aedes albopictus
Objective:
Objective:
Up-to-date data on the occurrence of Aedes invasive species in a given area are essential to plan and implement timely control strategies.
Methods:
Methods:
Entomological surveillance was planned and carried out monthly from May to December 2018, at higher potential entry points of Guilan Province, northern Iran, by ovitrap, larval collection and human baited trap. Species richness (R), Simpson’s (D), evenness (E) and Shannon–Wiener indexes (H̕) were measured to better understand of Aedes species diversity. Spearman correlation coefficient and regression model were used for data analysis.
Results:
Results:
A total of 3964 mosquitoes, including 17.20% Aedes species, belonging to three genera and 13 species were collected and morphologically identified. Aedes vexans and Ae. geniculatus, that peaked in October, were the eudominant species with a constant and frequent distribution respectively. Aedes vexans had a significant positive correlation with precipitation and relative humidity, while it had inversely associated with temperature. The Shannon-Wiener index was up to 0.84 and 1.04 in Rasht and July, respectively. Rarefaction curve showed a sufficiency in sampling efforts by reaching to asymptotic line at all spatial and temporal scales except in Rasht and October.
Conclusions:
Conclusions:
Although no Aedes aegypti or Ae. albopictus species were collected, this surveillance provides a better understanding of native Aedes species in the northern regions of Iran. This data will assist the health system in future arbovirus research and in the implementation of effective vector control and prevention strategies should Ae. aegypti and Ae. albopictus be found in the province.
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