Fauna Aquatic Insects in the Sewage Stabilization Ponds of Kashan University of Medical Sciences

Document Type : Technical Note


1 Assistant Prof. of Environmental Health, Kashan University of Medical Sciences

2 Associate Prof. of Environmental Health, Kashan University of Medical Sciences


Stabilization pond is a sewage treatment method. Being rich in organic matter, sewage is a favorable habitat for a variety of aquatic insects. Given the importance of these insects in the organic transformation cycle, this stabilization was carried out in 2005 in order to identify the aquatic insects living in the stabilization ponds ofKashanUniversityof Medical Sciences. For the purposes of this descriptive study, 9 series of sampling were performed and 1032 of larva, nymphs, and adults were collected from the four corners of each pond and sent to the laboratory for identification. The samples were identified using stereo-microscope and morphological identification keys. The species identified included Diptera (52%), Hempitera (24%), Ciclopodidade (12%), Hydroacarina (9.5%), Coleptera (0.77%), Aranida (0.67%), Hymenoptera (0.58%), and Odonata (0.48%). The families identified in the samples from the stabilization ponds under study involved Chironomidae and  Culicidae from the Diptera order; Corixidae, Notonectidae, Cupepodae, and Copepodidae from the order Hemiptera; Hydrophilidae from the order Coleptera; Aranidae from the order Aranida; Vospidae from the order Hymenoptera; and Ashnidae the order Odonata.


1-Merrit, R. W., and Commius, K. W. (1996). An introduction of the aquatic insects of North America, 3rd Ed.,Kendall, Hunt .Dubugue,LA, 320.
2- Foil, L. D.(1998). “Tabanids as vectors of diseasr agents.” Parasitology Today, 5,88-96.
3- Chae, S. J., Pusterla, N., Johnson, E., Derock, E., Lawler, S. P., and Madigan, J. E. (2000). “Infection of aquatic insects whit trematode metacercariae carry Ehrlichia risticii, the case of potomac house fever.” Journal of Medical Entomology, 37(4), 619-625.
4-De Villiers, P. C. (1987). “Simulium  dermatitis in man clinical and biological feartures in south African.” African Medical Journal, 71, 523-525.
5- ندافی، ک.، و نبی زاده، ر. (1375). برکه تثبیت فاضلاب، انتشارات فیض، تهران، 174.
6-میران زاده ، م. ب. (1383). برکه های تثبیت فاضلاب، انتشارات مرسل، کاشان، 160.
7-Miranzadeh, M. B.(2005). “Removal of pathogenic organisms from the effluent of an activated sludge system using maturation pond.” J. of Sciences, 5 (2), 230-240.
8- زعیم، م. (1365). فون پشه های کاشان و اهمیت آن در رابطه با بهداشت انسان، مرکز تحقیقات مناطق کویری و بیابانی ایران، 39.
9-دهقانی، ر.، الماسی، ح.، و اسدی، م.  ع. (1383). فون حشرات آبزی کاشان. فصلنامه علمی- پژوهشی دانشگاه علوم پزشکی و خدمات بهداشتی، درمانی کاشان، 8 (32)، 24-29.
10- تیرگری، س. (1375). پراکندگی، وفور و کلید شناسایی خانواده سنجاقکهای ایران.م. انجمن حشره شناسان ایران، 5(1)، 49-54.