https://www.journalajbgmb.com/index.php/AJBGMB/issue/feed 2026-10-16T07:03:44+00:00 Asian Journal of Biochemistry, Genetics and Molecular Biolog [email protected] Open Journal Systems <p><strong>Asian Journal of Biochemistry, Genetics and Molecular Biology (ISSN: <a href="https://nsl.niscpr.res.in/ISSNPROCESS/issnassignedinfo.jsp">2582-3698</a>)</strong> aims to publish high-quality papers (<a href="https://journalajbgmb.com/index.php/AJBGMB/general-guideline-for-authors">Click here for Types of paper</a>). The area of interest of AJBGMB includes but not restricted to all aspects of Biochemistry, Genetics and Molecular Biology. By not excluding papers based on novelty, this journal facilitates the research and wishes to publish papers as long as they are technically correct and scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer-reviewed, open-access INTERNATIONAL journal.</p> https://www.journalajbgmb.com/index.php/AJBGMB/article/view/575 2026-10-16T07:00:29+00:00 P. C. Nwachukwu [email protected] C. I. Abali

<p>Malaria remains a major public-health burden in Nigeria, yet local evidence linking breeding-site chemistry with malaria-vector abundance is limited. This study examined how physicochemical characteristics and heavy metal concentrations of mosquito breeding sites influence <em>Anopheles</em> vector abundance in Isiala Ngwa North, Abia State, Nigeria. An environmental-entomological survey was conducted using 48 breeding-site observations drawn from eight communities: Amapu Ntigha, Ihie, Mbawsi, Nsulu, Okpuala Ngwa, Umunna Nsulu, Umuode and Umuomainta. Three habitat types—drainage ditches, farm runoff channels and stagnant pools—were assessed across early and late rainy-season conditions. <em>Anopheles</em> larval abundance per 10 dips was quantified by combining <em>Anopheles gambiae</em> and <em>Anopheles funestus</em> counts. Water samples were analysed for temperature, pH, electrical conductivity, total dissolved solids, turbidity, biochemical oxygen demand, chemical oxygen demand, nitrate, phosphate and selected heavy metals. Descriptive statistics, habitat comparisons, Spearman’s rank correlation and negative binomial regression were used.A total <em>of 1,764 Anopheles</em> larvae was recorded across the ten-dip observations, with a mean abundance of 36.75. Farm runoff channels had the highest mean abundance (43.38), followed by drainage ditches (39.69) and stagnant pools (27.19). Sites sampled during the late rainy season recorded a higher mean abundance (41.75) than sites sampled during the early rainy season (31.75). Nsulu had the highest community mean (53.17), while Umuomainta had the lowest (26.33). Nitrate showed the strongest positive association with <em>Anopheles</em> abundance (Spearman’s rho = 0.565, p &lt; 0.001) and remained significant in the adjusted negative binomial model (IRR = 1.65; 95% CI: 1.05–2.58; p = 0.029). Heavy metals were not significant predictors after adjustment. Nutrient enrichment, particularly nitrate contamination, appears to be a key environmental driver of malaria-vector productivity in the study area. The evidence supports integrated larval-source management and routine hydrochemical surveillance for malaria control.</p>

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