The study of physical and chemical factors affecting breeding places of Anopheles in Iranshahr

MR Ghanbari; A Rakhsh Khorshid; Masoud Salehi; A Hassanzehi

Zahedan Journal of Research in Medical Sciences

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The study of physical and chemical factors affecting breeding places of Anopheles in Iranshahr

Author(s):

MR Ghanbari^1,*,

A Rakhsh Khorshid²,

Masoud Salehi³,

A Hassanzehi⁴

1Educational development Center, Faculty of Medicine, Gorgan University of Medical Sciences and health services, Golestan, Iran.

2Public Health Dept, Faculty of health, Zahedan University of Medical Sciences and health services, Zahedan, Iran.

3Tropical and Infectious Disease Dept, Faculty of Medicine, Zahedan University of Medical Sciences and health services, Zahedan, Iran.

4Province health Center

Zahedan Journal of Research in Medical Sciences:Vol. 7, issue 3; e94940

Published online:Jun 29, 2005

Article type:Research Article

Received:Feb 10, 2003

Accepted:Dec 27, 2004

How to Cite:MR GhanbariA Rakhsh KhorshidMasoud SalehiA HassanzehiThe study of physical and chemical factors affecting breeding places of Anopheles in Iranshahr.Zahedan J Res Med Sci.7(3):e94940.

Abstract

Backgrounds: Malaria is one of the most important health problems in many countries as well as
Iran, especially in southern Iran. Considering the role of Anopheles in transmission chain of the
disease, this study aims at determining effective physical and chemical factors in breeding places of
Anopheles' larve in Iranshahr.
Material and Method: 68 samples including 63 from breeding places of larve and five samples
from ponds with no larve were collected from different regions of Iranshahr as control group. Each
sample of the study contained one from those of water and the other from larve group which were
collected scientifically. Experiments conducted on water sample included PH, electrical
conductivity , Nitrate, Nitrite, Sulphate, Chloride, Calcium, rigidity, salinity, darkness, and
Phosphate.
Results: In this study 8 out of 13 species of Anopheles which had already been reported in the
region were collected. The results obtained indicate that there is significant difference between
mean physical and chemical factors of control group samples and samples
Collected from breeding places of larve. The range of variables such as electrical conductivity,
total rigidity, Calcium, Chloride, Sulphate,
Nitrate in breeding places without larve is more than 2 and sometimes 20 times while in regard
with darkness and Phosphates it is the reverse. Components such as Phosphate, electrical
conductivity, and Calciumin larve life of anophele were of great influence as the most important
carrier of Malaria in the region.
Conclusions: The results showed that large quantities of the above agents can play inhibiting role for
any kind of Aanophelines species. Whereas existence of nitrite in large quantities in water was one of the few
components that plays positive role in mosquitoes life.

Keywords

Larve

Anopheles

Breeding places

Physical and chemical agents

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References

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