Analysis of pathology in the gills of Abu mullet (Liza abu) affected by Musa creek water contamination

Subject Areas : Journal of Comparative Pathobiology

زهرا سلیمانی ¹ , نگین سلامات ² , علیرضا صفاهیه ³ , احمد سواری ⁴ , محمدتقی رونق ⁵

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Received: 2011-12-22 Accepted : 2012-05-19 Published : 2012-08-22

Keywords: Gill, Musa creek, Histopathology, Liza Abu,

Abstract :

Marine pollution is one of the main concerns of countries surrounding the Persian Gulf whichreceives a great deal of contaminations such as petroleum chemicals and heavy metals daily. Inthis regard, histological changes in gill were used as a biomarker to evaluate the health of themarine fish species Liza abu, collected from different sampling sites in Mussa creeks. In thepresent study, 50 L. abuwere collected from different sampling sites in Mussa creeks including:1. Petrochemical, 2. Gaafari, 3. Magidieh, 4. Ghazaleh and 5. Zangi. The gills of fish were fixedin Bouin‘s solution for 12 h. Five-micrometer thick sections were obtained and were stained inhematoxylin/eosin for examination in light microscopy. Pathological changes in the gill of Lizaabu species including hypertrophy and hyperplasia of the lamellar cells, oedema, lamellarfusion, increase of mucus and chloride cells. Histopathological alteration index was determinedon the basis of frequency of pathological changes in gill species Liza abu. The most amount ofHAI for gill were observed at the Petrochemical station (p<0.05). It is probably due to extensivevarious petrochemical industries which surrounding this part of creek and a great deal ofcontaminations such as petroleum chemical and heavy metals daily discharge into it. The leastamount of HAI was related to Zangi station. The result obtained in the present study showedthat the environmental contaminants in Mussa creek coused to neumerous histopatholigicalalternations in gills of Liza abu species.