research centers


Search results: Found 2

Listing 1 - 2 of 2
Sort by

Article
Comparative toxicities of crude oil and refined oil products to several species of molluscs from Shatt Al-Arab river

Author: W.A. Farid ; H.T. Al-Saad and A.H.Y. Al-Adhub
Journal: Marsh Bulletin مجلة الاهوار ISSN: 18169848 Year: 2009 Volume: 4 Issue: 1 Pages: 1-20
Publisher: Basrah University جامعة البصرة

Loading...
Loading...
Abstract

The present study includes toxicity experiments carried out under laboratory conditions for 24 - and 48 - hours periods by using renewal toxicity test system to determine the comparative toxicities of crude oil ( Basrah regular crude oil ) and refined oil products ( diesel oil , gas oil , gasoline , grease oil , kerosene , motor oil , paraffin wax and automatic transmission oil ) to several species of molluscs collected from Shatt Al – Arab river. These species of molluscs are snails , Lymnaea auricularia , Theodoxus jordani , Physa acuta , Melanopsis nodosa , and Melanoides tuberculata , and bivalves , Corbicula fluminea and Corbicula fluminalis . The toxicity experiments showed that the different types of oils vary widely in their toxicities to the species tested . The gasoline is clearly the most toxic fraction , while Kerosene is the next most toxic fraction , and is slightly less toxic than Basrah regular crude oil .The remaining fractions diesel oil and gas oil are relatively less toxic to the species tested , while the grease oil is almost non – toxic . Paraffin wax is non – toxic to all species , while the motor oil and automatic transmission oil are toxic to different species in varying degrees . There are some variation in the pattern of recovery rates of each species of snails from exposure to the oils .The order of sensitivity of molluscs species tested were : L . auricularia > P . acuta > M . nodosa > T . jordani > M . tuberculata > C . fluminalis > C . fluminea . The overall acute effects of hydrocarbons on the species of molluscs tested are abnormal activities , narcosis and anesthesia , the loss of ability to react to the external cue , rapture the tissues and die .


Article
The effect of acute exposure of Zn and Pb on some Biochemical markers in Fresh Water Snail (Viviparus bengalensis)

Authors: Ayad M.J.Almamoori --- Jasim M.Salman --- Randall Hughes, A
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2014 Volume: 1 Issue: 1 Pages: 47-55
Publisher: Babylon University جامعة بابل

Loading...
Loading...
Abstract

Biochemical markers (Total protein, Vitamin C, Vitamin E, Acetylcholinesterase, and Metallothioneins) induced by acute exposure of Zn&pb in Snail (Viviparus bengalensis) to show their response against these metals. These makers in snail sp. showed different significance response according to Zn acute exposure. So increased and decreased as reaction against acute exposure, The same trend adapted from biomarkers after pb acute exposure in snail sp. while the different response was appeared from these biomarkers after interaction acute exposure.

Listing 1 - 2 of 2
Sort by
Narrow your search

Resource type

article (2)


Language

English (2)


Year
From To Submit

2014 (1)

2009 (1)