در ميان اكثر بيوماركرهايي بيوشيميايي كه براي ارزيابي آلودگي هاي محيط هاي دريايي استفاده مي شوند، پروتئين متالوتيونين به عنوان يكي از ابزارهاي بسيار مهم و مفيد در رابطه با شاخص هاي بيوشيميايي فلزات به شمار مي رود. تغييرات بيوماركر متالوتيونين در شرايط طبيعي در پرتار Glycinde bonhourei در 9 ايستگاه در خليج چابهار با در نظر گرفتن فصول پيش از مانسون، مانسون و پس مانسون و غلظت فلزات مس، روي و كادميوم در بافت در سال 93-1392 در منطقه زير جزرومدي بررسي گرديد. ميانگين كل غلظت فلزات مس و روي و كادميوم در پيش از مانسون به ترتيب 2/04±6/39، 4/51±20/95، 0/04± 0/136 ميكروگرم بر گرم وزن خشك بوده و در فصل مانسون 1/46±3/51، 2/65±11/84، 0/01±0/059 ميكروگرم بر گرم وزن خشك بدست آمد و در پس مانسون 1/44±4/98، 3/58±16/51، 0/01±0/152 محاسبه گرديد كه آزمون تحليل واريانس يك طرفه ميان ايستگاهها و نيز بين فصول اختلافات معني داري را نشان داد (0/05
چكيده لاتين :
Among the many biochemical biomarkers used to assess contamination of the marine
environment, metallothionein protein is considered as one of the very important and
useful tool inrelated to biochemical markers metals. The aim of this study was to
evaluate Metallothionein changes in natural condition in polychaete Glycinde bonhourei
of 9 stations Chabahar Bay sub-tidal area from 2014 to 2015 with consideration before
the monsoon season, monsoon, post-monsoon and concentrations of copper, zinc,
cadmium in the polychaete tissue. Total average concentrations of copper and zinc and
cadmium respectively recorded in the monsoon 6.39±2.04, 20.95±4.51, 0.136±0.04
micrograms per gram dry weight of the monsoon season 3.51±1.46, 11.84±2.65, 0.059
± 0.01 and in the post-Monsoon 4.98 ±1.44, 16.51±3.58, 0.152±0.01 microgram per
gram of dry weight that one-way analysis of variance showed significant difference
between the station and seasons (P<0.05). The total average of protein Metallothionein
was calculated in pre- monsoon 28.33 ± 5.2, Monsoon 15.50 ± 4.9 and after Monsoon
21.39±4.37 mcg/g that one-way analysis of variance showed significant difference
between the station and seasons (P<0.05). Pearson correlation test showed no significant
differences between metals and biomarker changes that observed in any of the seasons
and stations. This study showed that changes in biomarker metallothionein more than
being under the influence of the concentration of heavy metals, can be caused due to
environmental conditions of the sampling area and changes in the Gulf by Monsoon.