Copyright@ Victor Ugochukwu OBISIKE | Biomed J Sci & Tech Res | BJSTR. MS.ID.005033. 23838 Research Article ISSN: 2574 -1241 A Study of the Susceptibility of Anopheles species to Pyrethroids on Long Lasting Insecticide Treated Nets (LLINs) and Ownership and Usage of LLINs in Some Communities in Obi Local Government Area Victor Ugochukwu OBISIKE* 1 , Emmanuel Ogilegwu OGBU 2 and Elizabeth U AMUTA 3 1 Department of Animal and Environmental Biology, Abia State University, Uturu. Abia, Nigeria 2 Department of Biological Sciences, Benue State University Makurdi. Benue, Nigeria 3 Department of Zoology, Federal University of Agriculture Makurdi .Benue, Nigeria *Corresponding author: Victor Ugochukwu OBISIKE, Department of Animal and Environmental Biology Abia State University, Uturu. Abia, Nigeria, Email: DOI: 10.26717/BJSTR.2020.31.005033 Background of Study Malaria is one of the most important vector-borne parasitic diseases worldwide [1]. Malaria is one of the most widespread infectious diseases of our time, threatening the health of about two-third of the world’s human population in 106 countries and territories; and resulting in as much as 600 million clinical attacks and taking the lives of more than 650,000 people a year, most of them in sub-Saharan Africa [1]. Malaria is the 3rd leading cause of death for children under five years worldwide, after pneumonia and diarrheal disease. One thousand three hundred young lives are estimated to be lost to malaria every day [2]. Malaria is a major public health problem in Nigeria where it accounts for more cases and deaths than any other country in the world. Malaria is a risk for ARTICLE INFO ABSTRACT The use of Long-Lasting Insecticide-treated Nets (LLINs) for Malaria vector control depends entirely on the continued susceptibility of Anopheles mosquitoes to pyrethroid Insecticides. This research is aimed at comparing the susceptibility of Anopheles species to pyrethroids on Long Lasting Insecticide-treated Nets in Okpokwu, Adiko and Obarike communities of Obi Benue State, Nigeria. LLINs of ages 0 (control nets), 1, 2, 3, 4, years were collected from each of the three communities. Anopheles larvae were also collected from the three communities, reared to adulthood from April-June 2015. Emerged adult female mosquitoes were tested for susceptibility to pyrethroids on each of the net ages collected. The mosquito in total were susceptible to pyrethroids on LLINs, with a mortality rate of 98.5%. The highest mortality, 100% was recorded in Adiko community, 98% mortality in Obarike community and the lowest, 97.6% mortality in Okpokwu community. The relationship between the mortality of mosquitoes and the different study communities was not significant. Mosquito samples were susceptible to net ages 0, 1 and 2 years with mortality rates of 100% each; 98% mortality with net age 3 years and 94% mortality with net age 4 years. The relationship between the mortality of mosquitoes and the different net ages was significant (P < 0.05). Out of 316 individuals that responded to questionnaires, a total of 279 (88.3%) owned LLINs out of which only 177 (63.4%) used LLINs previous night before this study. There was a significant relationship between the ownership and utilisation of LLINs with respect to the communities (r = 0.99), occupation (r = 0.94), age (r = 0.99) and gender (r = 1) of the respondents. This study concluded that mosquito populations from Obi LGA are susceptible to pyrethroids on LLINs indicating that LLINs are veritable tools for malaria control. Received: September 25, 2020 Published: October 06, 2020 Citation: Victor Ugochukwu OBISIKE, Emmanuel Ogilegwu OGBU, Elizabeth U AMUTA. A Study of the Susceptibility of Anopheles speciesto Pyrethroids on Long Lasting Insecticide Treated Nets (LLINs) and Ownership and Usage of LLINs in Some Communities in Obi Local Government Area. Biomed J Sci & Tech Res 31(1)-2020. BJSTR. MS.ID.005033. Keywords: Anopheles mosquitoes; Pyrethroids; Long Lasting Insecticide Treated Nets; Obi