ESTIMATION OF ESTROGENIC HEAVY METALS IN WATER AND BODY OF A COMMON FISH (ANABAS SP.) OF BORSOLA BEEL, GUWAHATI CITY, ASSAM, INDIA
S.H. Islam
Animal Physiology & Biochemistry Research Laboratory, Dept. of Zoology, Gauhati University, Guwahati 781014, Assam, India
B. Baruwa
Animal Physiology & Biochemistry Research Laboratory, Dept. of Zoology, Gauhati University, Guwahati 781014, Assam, India
J.C. Kalita
Animal Physiology & Biochemistry Research Laboratory, Dept. of Zoology, Gauhati University, Guwahati 781014, Assam, India
Receiving Date:
2015-10-13
Acceptance Date:
2015-11-15
Publication Date:
2015-12-10
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Abstract
In Assam, a notable water body is the Borsola Beel situated near Rehabari area of Guwahati city, Assam,
which was once upon a time famous for its fish diversity and was regarded as the Reserve Wetland in
2001. But, due to various anthropogenic activities of our fellow human beings the water body is
degrading gradually. It has been assumed that there might be accumulation of Endocrine Disrupting
Chemicals (EDCs) from the discharges of surrounding area in the water body as well as in the fish body.
Some chemicals mimic a natural hormone, fooling the body by over- responding to the stimulus or
responding at inappropriate times, some block the effects of a hormone from certain receptors while some
directly stimulate or inhibit the endocrine system and cause overproduction or underproduction of
hormones. Heavy metals such as Cadmium (Cd) & Lead (Pb) are reported to cause cancerous
development also. Accumulation of these toxic heavy metals in body system is not favoured in nature. The
present work aimed at the estimation of heavy metals (Pb & Cd) having alleged estrogenic properties in
the Borsola Beel. The analysis part involves collection of water samples and of a common fish species
(Anabas sp.) followed by analyzing them using Flame Atomic Absorption Spectrometry (FAAS). After the
FAAS analysis, the estrogenic heavy metals concentration in water was found to be in the order Pb>Cd
whereas in fish body tissues, especially in the Muscle tissue, Liver tissue, Ovary tissue, Kidney tissue and
Blood serum was also found to be in the order Pb>Cd.
Keywords:
Environmental estrogens, Environmental Endocrine Disrupting Chemicals (EDCs), Environmental estrogenic heavy metals and Estrogen mimics.
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