Hi Otto!

In this case you should contact Dr. David Aldridge, Senior Lecturer in Aquatic Ecology at the University of Cambridge, UK.

Email: [email protected]

Office Phone: 01223 (3)34436 or (3)31769

He is a specialist in Dreissena "Management".

Let me know, please, if it worked in the end....

all the best,

clemens

Dear Otto,

I  worked at the Inst. of Hydrobiology of Ukr. Ac. Sci for 16 years in Kiev, and directly with prof. Kcharchenko, prof. protasov and prof. Gryb. So, I'm familiar with their investigations in the question raised.

Here is translation a part from backgraund of patent copy attached from the Ukrainian with proposal to uze ozonation with schema of how to exploatate.

I know, that for irrigation agriculture is the very effective using of ammonium nitrate manure, esp effective was for southern region that suffer from Dreissena. dying zebra produce supplementary bio-manure!

So, about methods

The invention relates to Hydrobiology, namely to methods of combating Buprestidae selling water treatment systems and cooling water systems.

The known method of combating Buprestidae a) physical, by mechanical cleaning of pipelines, creation of high-speed flow of water to 2-2. 5 m/s, the use of electrical current and cathodic protection of the pipes at an early stage of development of the Zebra mussel, the use of ultrasound, heat treatment with water heated to 34 to 50 °C, using filters with mcrorie, drainage pipes heat exchangers for 7-14 days, sealing the individual segments of the cooling system to create anaerobic conditions in which killed the Zebra mussel,

b) chemicals: the use of active chlorine, copper sulfate, ammonium

water and pesticides

C) biological methods: use of trophic chains in the system of 'victim - predator' or 'Zebra mussel - fish' with the introduction of the reservoir 3-4 years of age, roach, bream and carp that are used to dracenu as food, or the creation of unfavorable abiotic conditions.

Similar means are considered in the work of Protasov A. A., Panasenko G. A. and Babariga S. P. (Biological interference in the operation of power stations, their typical and basic hydrological principles limitations // Hydrobiological journal, 2008. - Vol. 44, No. 5. p. 36-54.) [1].

Kharchenko T. A. The Zebra mussel: habitat, ecology, biomecha // Hydrobiological

journal, 1995. - Vol. 31, No. 3. - S. 3-21 [2].

I hope it help,

Andrey

https://publicwiki.deltares.nl/pages/viewpage.action?pageId=25722962#Driehoeksmossel-Dreissenapolymorpha+quagga-2

Dear Otto, you might contact colleagues from Deltares in Delft do did some studies on Dreissena. Temperature seems to be of major influence  (for pipelines a good solution, like mentioned in the above cited method under a).   Temperature variation and fluctuation disturbs the reproduction of Dreissena.  

Kind regards,   Harry 

Thanks Clemens and Andrey for your valuable comments! My collection of methods and scientific background is now in a sufficient status. I also found advertisements of control methodologies that are based on hydrogen peroxide, potash, magnetism, oxygen depletion, electricity, UV-light, ultrasound (and many others which I don't pursue due to their environmental side effects). Anyhow these are commercial propaganda and everybody claims his product as the best. 

I would like to know if somebody knows neutral reports on successful and eco-sensitive Dreissa control applications (especially in clogged tubes). Thank you all, Otto.

Hi Harry, good to hear from you :-)

Thanks for your helpful hints, I am keen in checking the Deltares papers now.. Our postings seem to having been crisscrossing.

Kind regards, Ottto

Dear Otto, I attached copy of my unpublished report, unfortunatelly in Slovak language, but you find on the end of its references. If you need some translation i can help you

Ferdinand

Thank you Ferdinand for this report; As the Dreissena topic has 80+ readers now, I would like to post the email answer of David Aldridge to my query:

Dr. David Aldridge, Senior Lecturer in Aquatic Ecology at the University of Cambridge, UK. Email: [email protected]

Hi Otto,

Yes, my company (BioBullets) is now used by the UK water industry. We have

regulatory approvals, and the product has no impact on recipient waters as

it breaks down to harmless material very quickly. We are currently looking

for demonstration opportunities in mainland Europe, so would be pleased to

chat. We can also send testimonials from various water companies. I'd be glad to

set-up a telephone call if you are interested. If you would liek to visit our website, then please do: www.biobullets.com 

Best wishes

David

Good responses already present, I offer a joke to lighten up the topic a bit:

What's the difference between zebra mussels and love?

Answer: Zebra mussels really ARE forever. 

(adapted from an earlier version comparing love to Herpes, students display very nervous laughter at this) 

Just to add, we've recently been consulting with David Aldridge looking at a similar biobullet approach for control of Gulf Wedge Clam (Rangia cuneata), which has recently invaded a watercourse just outside Boston in eastern England. It does not yet appear to be a problem, but we are looking to nip it in the bud before it does. The attractiveness of the approach is that it seems to be very species-specific and can be adapted so that it does not kill off the other resident bivalves (mostly unionids).

Cheers, Richard

My former supervisor, Steve Wells, is an expert at early detection, he is at the Aquatic Bioinvasion Research and Policy Institute, Department of Environmental Sciences and Management, Portland State University, Portland, Oregon, USA.

For control methods you need to inspect and decontaminate all watercraft and equipment that may have been exposed, for adults and newly settled spat.  I have used hot water pressure washing, which is most effective, but watercraft can also be stored, completely cleaned and dry, for long enough to kill the mussels (several weeks).  All spaces that may hold water or remain moist, including ballast tanks, tubing and inside boat motors must be decontaminated.

Excellent training (at no cost), practical advice and information is offered by Pacific States Marine Fisheries Commission, Aquatic Nuisance Project, (http://www.westernais.org/).  Remember: Clean, Drain, Dry all watercraft and equipment before relaunching in a new waterway.

 Thanks June for your helpful contribution!