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
Consumers’ Guide to Prescription and Over the Counter Medications
$230.00
Shopping Cart more
0 items
Information
Shipping & Returns
Privacy Notice
Conditions of Use
Contact Us
Bestsellers
01.Ecotoxicology of Free-Living Soil Nematode Caenorhabditis elegans pp. 1-52
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.Essureal Journey: Concepts, Concerns and Considerations for Hysteroscopic Sterilization
02.Feminism: Past, Present and Future Perspectives
03.Accelerating Newborn through Toddler Learning Development
04.Neonatal Intensive Care Units (NICUs): Clinical and Patient Perspectives, Levels of Care and Emerging Challenges
05.Genetic Mistakes: Understanding and Living with Fatty Acid Oxidation Disorders
06.The Impact of Severe Mental Illness on Quality of Life: Challenges for Research and Practices
07.Vukhomba: An Analysis of the Puberty Rites of Passage for Girls among Vatsonga in Relation to Sexuality Education
08.The Challenges and Issues of Tourism Development in China
09.Reconstruction of the Tradition: Tourism and Authentication of Heritage in China
10.Nonlinearity: Problems, Solutions and Applications. Volume 1
11.Adaptive Management: Elements, Applications and Research
12.Natural Fibers: Properties, Mechanical Behavior, Functionalization and Applications

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