The ecology of Aedes aegypti and Aedes albopictus larvae habitat in coastal areas of South Sulawesi, Indonesia

Abstract

Abstract. Ratnasari A, Jabal AR, Rahma N, Rahmi SN, Karmila M, Wahid I, 2020. The ecology of Aedes aegypti and Aedes albopictus larvae habitat in coastal areas of South Sulawesi, Indonesia. Biodiversitas 21: 4648-4654. Aedes aegypti and Aedes albopictus are arbovirus vectors that can adapt to various environmental conditions. This study aimed to analyze the spatial distribution, habitat characteristics, and the correlation between the number of Ae. aegypti and Ae. albopictus larvae with physical factors. The larvae were collected from seven sampling locations along the coast of South Sulawesi at a distance of 100 m, 500 m, 1 km, and 2 km from the coastline. The collected samples and their water habitat were examined in the Entomology Laboratory of the Faculty of Medicine, Hasanuddin University, South Sulawesi, Indonesia. The number of larvae was counted (3182 larvae of both kinds), and the pH and salinity of the water were measured. Data analysis was performed with IBM SPSS version 24 and spatial distribution of larvae was mapped with ArcGIS version 10.5. We found that the highest number of Ae. aegypti was at a distance of 100 m from the coastline (73.34%), while Ae. albopictus was at 500 m (34.14%). Most of the mosquitos laid their eggs on discarded boats as observed in the Kurri Caddi coast (31.2%). The observed ranges of pH, salinity, and temperature of larvae habitat were 5.5-6.4, 5-2 ppt, and 28-31°C, respectively. The total number of larvae had a significant correlation p<0.05 with the physical factors, i.e., distance from the coastline, water pH, temperature, and kind of water storages (containers). This study showed that physical factors in the coastal area significantly influenced the habitat characteristics and the abundance of Ae. aegypti and Ae. albopictus larvae.

How Do Climate Variables Affect the Transmission of Dengue Infection in South and Southeast Asia: A Scoping Review

“…A study in Nepal during 2011 -2012 period revealed that each degree rise in mean temperature has shown an increase in Ae aegypti and Ae albopictus abundance (Dhimal et al, 2015). This was supported by a study in Indonesia in 2019 which revealed that there is a positive correlation between temperature and Ae aegypti and Ae albopictus larvae (Ratnasari et al, 2020). However, another study has proven that each degree rise in mean temperature by one degree Celsius was associated with a decrease in the mean Ae aegypti and Ae albopictus mosquito number by 6.49 (95%CI: -12.4 -0.58; p= 0.032) (Paul et al, 2018).…”

Relationships between water quality and mosquito presence and abundance: a systematic review and meta-analysis

“…arabiensis and An . subpictus , are prevalent in ponds, swamps, and irrigation ditches with similar oxygen sources (Muturi et al 2008, Ratnasari et al 2020). This corroborates with the results of an experiment by Yamada et al (2020) where they quantified the role of oxygen depletion on an Ae .…”

Control methods for invasive mosquitoes of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Indonesia

“…For instance, as one of the most productive breeding sites, Ae. aegypti thrives in used boats in Kurri Caddi (South Sulawesi) [ 21 ]. In addition, clusters of containers, which serve as “hot spots,” influence mosquito production and act as a source of infestation in the surrounding vicinity.…”