Humans cause mosquitoes


Amanda sarinana

 Mosquitoes are found all throughout the world and may adapt to a wide variety of environmental factors. Mosquito distribution and abundance, which are required hosts for many infectious diseases, are principally influenced by the availability and quality of larval environments. Researchers carried out a four-month mosquito survey across ten inhabited islands in the Lakshadweep archipelago in order to better understand the dynamics and productivity of larval homes in changing island settings. With the help of fine-resolution larval habitat mapping, researchers identified 7890 mosquitoes from 13 species and 7 genera. Researchers conducted thorough surveys on eleven inhabited islands (Agatti, Kavaratti, Chetlat, Kalpeni, Amini, Kiltan, Kadmath, Androth, Bitra, and Minicoy) from October 2019 to  January 2020 for larval habitat, species diversity, and distribution . Their main objective was to calculate how much each mosquito species used its respective niche and how frequently. On each island, a random selection of homes was made. To document the current variety and species richness of mosquitoes on these islands, we used adult collection techniques. Around human settlement, both natural habitats—such as tree holes, coconut shells, plant axils—and manmade habitats—such as tires, boats, grinding stones, abandoned plastic containers, discarded cutlery, etc.—were investigated. Using 350 mL larval dippers, mosquito larvae representing various stages of development were gathered and housed in cages in a mobile lab until emergence. Geographic coordinates, a digital meter (pH-80 HM Digital) for measuring pH and temperature, and a portable salinity refractometer for measuring salinity were all recorded at each sample collecting location. According to our research, mosquito larval richness was higher in artificial than in natural settings, and larval species richness was positively correlated with the island area. In addition, the diversity of mosquito species did not change as islands were separated from one another. Ph and temperature are two microclimatic factors that are related to mosquito abundance by species.

This study of mosquitoes revealed that species abundance and coexistence patterns are driven by fine-scale microclimatic factors in a range of natural and man-made habitats. The Lakshadweep islands' high larval indices and above epidemic threshold were caused by abandoned plastic containers and drums, which we studied and found as the most productive larval homes. By eliminating human-caused plastic pollution (household waste) in these distant maritime areas, which is a major factor in disease risk, this study provides the baseline data required to develop mosquito control tactics.


 


 

 

 

P., M. N. P., D., R. P., G., S., K., A. A. P., K., S. M., A., S. P., P., R., V., S., Dasgupta, S., Krishnan, J., & Ishtiaq, F. (2022, May 16). Island biogeography and human practices drive ecological connectivity in mosquito species richness in the Lakshadweep Archipelago. Nature News. Retrieved November 1, 2022, from https://www.nature.com/articles/s41598-022-11898-y#citeas 

 

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