أعضاء هيئة التدريس - جامعة بنها
Evaluation of single and interactive toxicities of lead and iron using filtration rate of Zebra mussels (Dreissena polymorpha).
• 2012
معلومات البحث
المؤلفون
Kováts N; Abdel-Hameid N-A; Kováts K; Padisák J
الكلمات المفتاحية
Not Available
المجلة العلمية
Not Available
الناشر
Not Available
المجلد
Not Available
العدد
Not Available
الصفحات
Not Available
publication.type
International
رابط البحث
Open Link
المواد المرفقة
Not Available
الملخص
Abstract:
The filtration rate of zebra mussels (Dreissena polymorpha), as a sensitive biological end point, was used to evaluate the toxicity of lead and iron.
Zebra mussels were exposed individually to serial levels of lead and iron (800, 1000, 1200, 1400, 1800 μg L-1).
The inhibition of filtration rate was determined after 24 h.
The bioassay revealed that the effective concentration causing filtration inhibition 1% (EC1filtration), 5% (EC5filtration ), 10% (EC10filtration), 50% (EC50filtration) and 99% (EC99filtartion) of Pb and Fe to D.
polymorpha were 427.072, 601.310, 721.648, 1373.448, 4416.951 μg L-1 and 409.908, 571.420, 682.141, 1274.149 and 3960.532 μg L-1, respectively.
The ECx values recorded for Fe were higher than those recorded for Pb.
Therefore, Fe was found to be more toxic to zebra mussels than Pb.
The interactive effect of these metals was examined by testing the inhibition of filtration rate of zebra mussels exposed to 1:1 mixture of Pb and Fe.
It was established that their interaction was synergistic. The results show that D.
polymorpha filtration rate can be a sensitive end-point for assessing ecological risk of Pb and Fe as environmental contaminants.
Keywords:
metals, interactive effects, ecotoxicology, zebra mussels, filtration rate.
The filtration rate of zebra mussels (Dreissena polymorpha), as a sensitive biological end point, was used to evaluate the toxicity of lead and iron.
Zebra mussels were exposed individually to serial levels of lead and iron (800, 1000, 1200, 1400, 1800 μg L-1).
The inhibition of filtration rate was determined after 24 h.
The bioassay revealed that the effective concentration causing filtration inhibition 1% (EC1filtration), 5% (EC5filtration ), 10% (EC10filtration), 50% (EC50filtration) and 99% (EC99filtartion) of Pb and Fe to D.
polymorpha were 427.072, 601.310, 721.648, 1373.448, 4416.951 μg L-1 and 409.908, 571.420, 682.141, 1274.149 and 3960.532 μg L-1, respectively.
The ECx values recorded for Fe were higher than those recorded for Pb.
Therefore, Fe was found to be more toxic to zebra mussels than Pb.
The interactive effect of these metals was examined by testing the inhibition of filtration rate of zebra mussels exposed to 1:1 mixture of Pb and Fe.
It was established that their interaction was synergistic. The results show that D.
polymorpha filtration rate can be a sensitive end-point for assessing ecological risk of Pb and Fe as environmental contaminants.
Keywords:
metals, interactive effects, ecotoxicology, zebra mussels, filtration rate.