Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus

In this paper we have studied the acute toxicity effect of Hg on hybrid tilapia (Oreochromis niloticus). For this, the tissues of tilapia have been digested by means of acids in microwave oven and was analyzed by flameless atomic absorption spectrophotometer (FAAS). We have identified that the level...

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Main Authors:	Mohammed A. Jasim, Mohd Sofian-Azirun, Yusoff, I., M. Motior Rahman
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2016
Online Access:	http://journalarticle.ukm.my/9577/ http://journalarticle.ukm.my/9577/ http://journalarticle.ukm.my/9577/1/15_Mohammed_A._Jasim.pdf

id	ukm-9577
recordtype	eprints
spelling	ukm-95772016-12-14T06:50:21Z http://journalarticle.ukm.my/9577/ Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus Mohammed A. Jasim, Mohd Sofian-Azirun, Yusoff, I., M. Motior Rahman, In this paper we have studied the acute toxicity effect of Hg on hybrid tilapia (Oreochromis niloticus). For this, the tissues of tilapia have been digested by means of acids in microwave oven and was analyzed by flameless atomic absorption spectrophotometer (FAAS). We have identified that the levels of Hg varied significantly in different tissues and the metal concentration was in the following order: liver > gills > muscles; of which the maximum level recorded for Hg was 0.799 mg/kg. We have also observed the alterations towards histopathological aspects in the gills and liver of treated fishes were studied using light and electron microscopy, subjected to the exposure of Hg for 24 h and furthermore we have also noticed the extent of the increased alterations during the 96 h of exposure to median lethal concentration LC50 (0.3 mg/L) a severe disorganization of epithelial cells and modifications of the structure of the secondary lamellae. Moreover the severity has also found to increase to sub-lethal concentration (0.03 mgHg/L) in 21 days of exposure; Liver was slightly affected by the contamination of Hg. Ultimately, histopathology is considered as a sensitive technique of bioaccumulation and for the observing the potential damage from Hg exposure. Universiti Kebangsaan Malaysia 2016-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9577/1/15_Mohammed_A._Jasim.pdf Mohammed A. Jasim, and Mohd Sofian-Azirun, and Yusoff, I., and M. Motior Rahman, (2016) Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus. Sains Malaysiana, 45 (1). pp. 119-127. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol45num1_2016/contentsVol45num1_2016.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	In this paper we have studied the acute toxicity effect of Hg on hybrid tilapia (Oreochromis niloticus). For this, the tissues of tilapia have been digested by means of acids in microwave oven and was analyzed by flameless atomic absorption spectrophotometer (FAAS). We have identified that the levels of Hg varied significantly in different tissues and the metal concentration was in the following order: liver > gills > muscles; of which the maximum level recorded for Hg was 0.799 mg/kg. We have also observed the alterations towards histopathological aspects in the gills and liver of treated fishes were studied using light and electron microscopy, subjected to the exposure of Hg for 24 h and furthermore we have also noticed the extent of the increased alterations during the 96 h of exposure to median lethal concentration LC50 (0.3 mg/L) a severe disorganization of epithelial cells and modifications of the structure of the secondary lamellae. Moreover the severity has also found to increase to sub-lethal concentration (0.03 mgHg/L) in 21 days of exposure; Liver was slightly affected by the contamination of Hg. Ultimately, histopathology is considered as a sensitive technique of bioaccumulation and for the observing the potential damage from Hg exposure.
format	Article
author	Mohammed A. Jasim, Mohd Sofian-Azirun, Yusoff, I., M. Motior Rahman,
spellingShingle	Mohammed A. Jasim, Mohd Sofian-Azirun, Yusoff, I., M. Motior Rahman, Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
author_facet	Mohammed A. Jasim, Mohd Sofian-Azirun, Yusoff, I., M. Motior Rahman,
author_sort	Mohammed A. Jasim,
title	Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
title_short	Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
title_full	Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
title_fullStr	Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
title_full_unstemmed	Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus
title_sort	bioaccumulation and histopathological changes induced by toxicity of mercury (hgcl2) to tilapia fish oreochromis niloticus
publisher	Universiti Kebangsaan Malaysia
publishDate	2016
url	http://journalarticle.ukm.my/9577/ http://journalarticle.ukm.my/9577/ http://journalarticle.ukm.my/9577/1/15_Mohammed_A._Jasim.pdf
first_indexed	2023-09-18T19:55:17Z
last_indexed	2023-09-18T19:55:17Z
_version_	1777406487683923968

Bioaccumulation and histopathological changes induced by toxicity of mercury (HgCl2) to tilapia fish oreochromis niloticus

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