DOI: https://dx.doi.org/10.18203/2394-6040.ijcmph20220847
Published: 2022-03-25

A study to assess the Aedes mosquto diversity and the different mosquito genera in a rural area in Thrissur, Kerala

Anitha Wilson, V. T. Krishnadas, C. R. Saju, M. Mohammed Rafi

Abstract


Background: Mosquito is one of the leading causes of vector borne causing infections leading to morbidity and mortality worldwide. It is the reason for spreading various viral, parasitic infections to humans. India has favorable climatic and environment conditions for mosquito breeding and in addition to these, influence of human activity has been significant in the increased breeding of mosquitoes. The objective of the study was to determine the various artificial containers which led to the Aedes mosquito larvae breeding and to understand the various mosquito genera in a rural area in Kerala.

Methods: A cross sectional study was conducted over a period of 4 months September, October, December and January in a ward of Kaiparambu Panchayath, Thrissur. A house-to-house survey was done where every water holding containers outdoor and indoor of each house was inspected, looked for larvae, collected and examined. Adult mosquitoes were also collected from the premises.

Results: Total house examined were 520 over four months and positive containers were 271. The House index, Container index and Breteau index for the 4 months were moderate to high risk level. Maximum breeding was seen in plastic containers and the most common species identified during larval and adult stages from indoor and outdoor were Aedes albopictus.

Conclusions: Mosquitoes are the main risk for various vector borne diseases. Influence of manmade habitats has been significant in the increase of mosquito diversity. By educating the people, appropriate waste management and reducing use of plastics can to extent reduce the problems associated.

 


Keywords


Aedes aegypti, Aedes albopictus, Artificial container, Larvae breeding, Mosquito

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References


Radhakrishnan A. Study on mosquito (Diptera: Culicidae) diversity in Ernakulam district of the Kerala state, South India. Int J Mosquito Res. 2019;6(1):1-5

Dengue surveillance. Available from: https://www.who.int/westernpacific/emergencies/surveillance/dengue. Assessed on 4 April 2021.

Jerome KP, Mundodan JM, Rafi M, Saju CR. Impending dengue outbreak: an awareness on mosquito density, diversity and awareness. Int J Mosquito Res. 2019;6(6):22-5.

Samuel PP, Thenmozhi V, Nagaraj J, Kumar TD, Tyagi BK. Dengue vectors prevalence and the related risk factors involved in the transmission of dengue in Thiruvananthapuram district, Kerala, South India. J vector Borne Dis. 2014;51:313-9.

Vijaykumar K, Kumar STK, Nujum ZT, Umarul F, Kuriakose A. A study on container breeding mosquitoes with special reference to Aedes (Stegomyia) aegypti, Aedes albopictus in Thiruvananthapuram district, India. J vector Borne Dis. 2014;51:27-32.

Banerjee I. Dengue: The break-bone fever outbreak in Kerala, India. Nepal J Epidemiol. 2017;7(2):667-9.

Vijayakumar K, Anish TS, Sreekala KN, Ramachandran R, Philip RR. Environmental factors of households in five districts of Kerala affected by the epidemic of Chikungunya fever in 2007. Nat Med J India. 2010;23(2).

www.dhs.kerala.org. Assessed on 10 January 2020.

Paul AP, Vincent J, Saju CR, Rafi MM. A study on larval indices of Aedes and risk for dengue outbreak in a rural area of Thrissur district, Kerala. J Commun Dis. 2020;52(1):1-6

Vaz C, Harikumar A, Mundodan JM, Rafi M, Saju CR. Mosquito density in rural Kerala: a study on the trend of Aedes larval indices over monsoon in a rural area of Thrissur district, India. Int J Community Med Public Health. 2019;6(10):4528-32.

Krishnadas VKT, Rachel J, Saju CR, Rafi MM, Joshy VM. A study on mosquito density in rural Kerala before and after floods. Int J Community Med Public Health. 2019;6(2):659-63.

Health CJ, Grossi-Soyster EN, Ndenga BA, Mutuku FM, Sahoo MK, Ngugi HN, et al. Evidence of transovarial transmission of chikungunya and dengue viruses in field-caught mosquitoes in Kenya. PLoS Negl Trop Dis. 2020;14(6):e0008362.

The Economic Times: Times of India. 65 Zika virus cases reported in Kerala as on August 2, 2021: Health Minister Mansukh Mandaviya. Updated August 2, 2021. Available from: https://economictimes.indiatimes.com/news/india/65-zika-virus-cases-reported-in-kerala-as-on-august-2-2021-health-minister-mansukh-mandaviya/articleshow/85098496.cms. Accessed on 10 September 2021.

Balwar R, Vaidya R, Tilak R, Gupta R, Kunte R. Textbook of Public Health and Community Medicine. Pune. Armed Force medical College in collaboration with WHO. New Delhi; 2009.

Benelli G, Jeffries CL, Walker T. Biological control of mosquito vectors: past, present, and future. Insects. 2016;7:52.

Rainfall data for major cities of India. Available from: http://www.rainwaterharvesting.org /rainfall_htm/kochi.htm. Accessed on 20 March 2020

Shukla S. Science Nomad, politics, TOI. Dengue mosquito does NOT lay eggs IN water, but STICKS them to the side of the container. June 2, 2020. Available from: https://timesofindia.indiatimes.com/blogs/science-nomad/dengue-mosquito-does-not-lay-eggs-in-water-but-sticks-them-to-the-side-of-the-container/. Assessed on 3 June 2021.