Nova Publishers
My Account Nova Publishers Shopping Cart
HomeBooksSeriesJournalsReference CollectionseBooksInformationSalesImprintsFor Authors
            
  Top » Catalog » Books » Environment » Ecotoxicology around the Globe Chapters » My Account  |  Cart Contents  |  Checkout   
Quick Find
  
Use keywords to find the product you are looking for.
Advanced Search
What's New? more
Advances in Nanotechnology. Volume 19
$225.00
Shopping Cart more
0 items
Information
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Notifications more
NotificationsNotify me of updates to Iron Pollution in Dora Baltea River (Valle D’aosta, North-Western Italy): A Case of Acute Toxicity in Wild Brown Trout (Salmo trutta trutta) pp. 339-348
Tell A Friend
 
Tell someone you know about this product.
Iron Pollution in Dora Baltea River (Valle D’aosta, North-Western Italy): A Case of Acute Toxicity in Wild Brown Trout (Salmo trutta trutta) pp. 339-348 $100.00
Authors:  (Marino Prearo, Stefania Squadrone, Concetta Antonia Elia, Ilaria Giorgi, Renata Tarasco, Ambrosius Josef Martin Dörr, Maria Cesarina Abete, State Veterinary Institute of Piedmont, Liguria and Valle d’Aosta, Turin, Italy, and others)
Abstract:
Mortality events occur in wild fish population, often due to unknown cause and related to industrial and urban pollution or agricultural dumping. Not appropriate controls on the territory and not always well-timed mortality registrations and samples collection bring to not reliable results or to specimens not suitable to be analysed. The aim is to describe an acute mortality event in wild brown trout (Salmo trutta trutta) that took place in Dora Baltea River of Aosta city (Valle d‘Aosta, north-western Italy). In this area a steel mill is situated, and its refuses, previous clearance, input directly in the river. Dora Baltea River, in the stream that crosses the city, is characterized by a fish population of only one species, even if this zone should have a potential biodiversity (brown trout and marble trout/grayling). In the late winter of 2007, the local authority signalled an important mortality of several hundred of brown trout specimen along the river, starting from Aosta as far as Pollein (AO).
Fish samples were collected from the riverbed to be analysed with anatomopathological, cultural and virological tests. Iron, chromium and lead, which could have derived from the local steel mill industrial process, were determined in gills and gastric content. Healthy specimens of brown trout collected from a local fish farm were employed as negative controls. Anatomopathological tests showed a high presence of mucus in gills with ―Gill Disease‖ and compact material between gills lamellae, while no other skin or viscera alteration were present. Cultural and virological tests resulted negatives. Chemical analyses revealed an extremely high iron level in gills and gastric content, and low levels of chromium and lead. Mortality was then imputed to the toxic effect of iron, released in the river at high dosage due to an abnormal control of effluent functioning system. In fact, iron is usually not present in river bed sediments at those levels. At the same time anatomopathological investigations showed that fish died for asphyxia as a consequence of the high mucus production in gills contaminated by iron. The analyses performed in the months following the acute toxicity episode did not point out chronic pollution effects on fish fauna and environment. 


Available Options:
Version:
Special Focus Titles
01.Medical Cannabis: Clinical Practice
02.Hemorrhagic Shock: Recognition, Pathophysiology and Management
03.Patellofemoral Pain: An Evidence-Based Clinical Guide
04.Neanderthals in Plato’s Cave: A Relativistic Approach to Cultural Evolution
05.My Patients Were Mummies
06.‘L’Atelier Moderne’: An Exploration of the Collaborative Process Between Performer and Composer in Vocal Music Theatre of the 21st Century (CD Included)
07.The Voice at the End of the Telephone Line: The Psychology of Tele Carers
08.Caught up in the Spirit! Teaching for Womanist Liberation
09.The Transgender Handbook: A Guide for Transgender People, Their Families and Professionals
10.Mastering Science with Metacognitive and Self-Regulatory Strategies: A Teacher-Researcher Dialogue of Practical Applications for Adolescent Students
11.Political Migrations in Poland in the Period of World War II
12.Sociolinguistic Parallels Across Europe: Focus on Lowland Scotland and the Eastern Slavic Countries

Nova Science Publishers
© Copyright 2004 - 2017

Iron Pollution in Dora Baltea River (Valle D’aosta, North-Western Italy): A Case of Acute Toxicity in Wild Brown Trout (Salmo trutta trutta) pp. 339-348