The Effects of Different Malathion Concentrations on Algal Growth in Cultural Conditions
Abstract
Malathion is one of the insecticides commonly used to control hazelnut pests in hazelnut orchards in Giresun region. This insecticide pollutes lakes, rivers and sea waters by drifting from the soil with rain, flood and snow waters. In this study, Scenedesmus sp. cultures were prepared in BG-11 medium for use in laboratory experiments. It was aimed to determine the change in algal growth due to the increase in malathion concentration applied to these cultures. Growth of strains in cultures treated with malathion at doses of 0.05 mg/L, 0.5 mg/L, 1 mg/L, 5 mg/L and 10 mg/L were compared with those grown in non-malathion cultures. In addition, pH was measured and chlorophyll-a values were also calculated for the control group and the cultures to which malathion was added during the study. Cell number showed different changes over time according to pesticide concentrations. The highest number of cells was 3.61x106 cells/ml at 10 mg/L dose at the end of 24th hour and the lowest number of cells was 2.05x106 cells/ml at 10 mg/L dose at the end of 48th hour. pH values did not fluctuate much and generally decreased at the end of 96th hour. The lowest chlorophyll-a was calculated as 0.35 µg/L at 96th hour. As a result, it was determined that the doses studied negatively affected algal growth, although not too much.
Keywords
Stream, green algae, algal growth, pesticide, malathion
Project Number
FEN-BAP-A-230218-19
References
- Ağırman, N. and Çetin, A. K. (2012). Investigation of the effects of some pesticides on the development of Chlorella vulgaris. 21st National Biology Congress, (ss. 924). Ege University, İzmir, Turkey.
- Altıkat, A., Turan, T., Torun, F. E., Bingül, Z. (2009). Pesticide use in Turkey and its effects on the environment. Journal of Atatürk University Faculty of Agriculture, 40(2), 87-92.
- Cessna, A. J. (2009). Pesticides in the environment: Real or Imagined, Agriculture and Agri-food Canada, Research Centre, Lethbridge, AB.
- Chen, Y., Wen, X., Wang, B., Nie, P. 2017. “Agricultural pollution and regulation: How to subsidize agriculture?”. Journal of cleaner production, 164, 258-264.
- Cid, Á., Prado, R., Rioboo, C., Suarez-Bregua, P., Herrero, C. (2012). Use of Microalgae as Biological Indicators of Pollution: Looking for New Relevant Cytotoxicity Endpoints. In: Microalgae: Biotechnology, Microbiology and Energy. Ed.: Johnsen, M. N, Nova Science Publishers, New York, pp: 311-323.
- Couderchet, M., Vernet, G. (2003). Pigments as biomarkers of exposure to the vineyard herbicide flazasulfuron in freshwater algae. Ecotoxicology and Environmental Safety, 55(3): 271-277. doi.org/10.1016/S0147-6513(02)00064-7
- Dash, D. M. and Osborne, W. J. (2023). A systematic review on the implementation of advanced and evolutionary biotechnological tools for efficient bioremediation of organophosphorus pesticides, Chemosphere. 313, 137506.
- Deknock, A., Troyer, N. D., Houbraken, M., Dominguez-Granda, L., Nolivos, I., Echelpoel, W. V., Forio, M. A. E., Spanoghe, P., Goethals, P. (2019). Distribution of agricultural pesticides in the freshwater environment of the Guayas river basin (Ecuador). Science of the Total Environment, 646, 996-1008. doi.org/10.1016/j.scitotenv.2018.07.185
- Demirbaş, A. R. (2010). Fındık Tarımı. T.C. Samsun Valiliği İl Tarım Müdürlüğü. Samsun.
- Doğan, F. N. and Karpuzcu, M. E. (2019). Türkiye’de tarım kaynaklı pestisit kirliliğinin durumu ve alternatif kontrol tedbirlerinin incelenmesi. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, 25(6), 734-747.
