Navigation Links
New ballast treatment could protect Great Lakes fish
Date:6/4/2008

A Michigan Technological University professor has developed a new water treatment that could help keep a deadly fish disease out of Lake Superior.

David Hand, a professor of civil and environmental engineering at Michigan Tech, has devised a simple way to treat ballast water in vessels ranging from pleasure craft to ore boats. His method is designed to kill the virus that causes viral hemorrhagic septicemia (VHS), an often-fatal disease that has been attacking fish populations in the lower Great Lakes.

Hand's treatment is simple.

The ballast water is disinfected with sodium hypochloriteordinary household bleach. Then it is treated with ascorbic acid, or vitamin C, which neutralizes the bleach before the water is released into the lake.

With good initial results, Hand has tested his method on the Ranger III, a National Park Service vessel that shuttles visitors and staff between the mainland and Isle Royale National Park.

In the next few weeks, the Great Ships Initiative will conduct independent lab tests on his system at the University of WisconsinSuperior to help determine if it is safe, effective and inexpensive. Other partners in the effort are the National Park Service and the US Fish and Wildlife Service.

"VHS has had a devastating effect on the musky population in Lake St. Clair and affects 23 species of game fish," said Phyllis Green, superintendent of Isle Royale National Park and the midwest coordinator of the park service's VHS Prevention Team. "It's important that we keep it out of the Lake Superior basin or at least slow its spread. Our aim is to find a low-tech, low-cost, interim solution that can stop the spread of VHS."

Since 2003, VHS it has caused massive dieoffs of fish species ranging from walleyes to salmon in all of the Great Lakes except Superior. Infected fish die from bleeding of their internal organs and often have open sores and bruised-looking, reddish tints on their skin.

As bad as it is, VHS is only part of the problem Hand wants to address. Exotic species have been hitchhiking throughout the Great Lakes via ballast tanks since 1959, when the St. Lawrence Seaway opened. And, as global trade increases, the problem will only get worse.

"Ships unload their ballast water from all over the world, and with it all kinds of exotic, invasive species, from viruses and bacteria to the zebra mussel," said Hand.

It's unfair to point the finger only at ocean-going ships, says Hand, a devoted angler and boat owner himself. All boaters should sterilize their bilge, ballast and livewell water.

"Not only do we need to prevent the salties from bringing in new viruses, we also need the lake carriers from the lower Great Lakes to treat their ballast, because the VHS virus is already in Lakes Huron, Michigan and Erie, and we don't want it in Superior," he said. "We really need something for all ships, as well as pleasure boats."

"We all need to protect the resource," he said.

If tests show that his system is as safe and effective as he believes, Hand hopes to map a strategy to implement its use throughout the Great Lakes.


'/>"/>

Contact: Jennifer Donovan
jdonovan@mtu.edu
906-487-4521
Michigan Technological University
Source:Eurekalert

Related biology news :

1. U-M ballast-free ship could cut costs while blocking aquatic invaders
2. Quest for better treatment for effects of menopause
3. Sugar linkage could lead to better treatment for autoimmune diseases
4. Glypican-3 gene function in regulating body size helps inform novel cancer treatments
5. Early treatment of stomach infection may prevent cancer
6. New surgery improves head and neck cancer treatment
7. Hyperviscous fluids: Better treatment for severe blood loss
8. Pregnancy is possible after cancer treatment
9. Three Dimensional Visualization of Right Ventricle Provides Important Information for Treatment of Patients with Tetralogy of Fallot, According to a Study in The American Journal of Cardiology
10. Research identifies first method for testing, assessing drug treatments for Chagas disease
11. Pregnant patients lose out in breast cancer treatment; a new approach is needed
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... -- NXT-ID, Inc. (NASDAQ:   NXTD ) ("NXT-ID" ... of independent Directors Mr. Robin D. Richards and ... furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive Officer ... guidance and benefiting from their considerable expertise as we move ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC , ... that the United States Patent and Trademark Office (USPTO) ... covers the linking of an iris image with a ... and represents the company,s 45 th issued patent. ... is very timely given the multi-modal biometric capabilities that ...
(Date:3/29/2017)... the health IT company that operates the largest health ... today announced a Series B investment from BlueCross BlueShield ... investment and acquisition accelerates higi,s strategy to create the ... activities through the collection and workflow integration of ambient ... secures data today on behalf of over 36 million ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... At its national board meeting ... a professor in Harvard University’s Departments of Physics and Astronomy, has been selected for ... of the winning team for the 2015 Breakthrough Prize in Fundamental physics for the ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses the surface electromyography (sEMG) ... tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The prospective multicenter phase III ...
(Date:10/7/2017)... WA (PRWEB) , ... October ... ... industry leader in Hi-C-based genomic technologies, launched its ProxiMeta™ Hi-C metagenome deconvolution ... ProxiMeta Hi-C kit and accompanying cloud-based bioinformatics software to perform Hi-C metagenome ...
(Date:10/6/2017)... ... October 06, 2017 , ... The HealthTech Venture ... sector at their fourth annual Conference where founders, investors, innovative practitioners and collaborators ... ELEVATE pitch competition showcasing early stage digital health and med tech companies. , ...
Breaking Biology Technology: