Thames Anglers' Conservancy Members Forum
TAC Members-Only Forum
If you have arrived here and not yet signed up as a member, then please first join at http://t-a-c.actionboard.net/register using your real name.

Forum Membership is with Real Names only.
Please create a Username that is your First Name and Surname eg. "Joe Bloggs"
(This will save our Admin team the need to contact you about changing it)

http://rivertac.org/membership


Thames Anglers' Conservancy Members Forum
 
HomeHome  TAC Home PageTAC Home Page  SearchSearch  FAQFAQ  RegisterRegister  Log in  
Navigation
Search
 
 

Display results as :
 
Rechercher Advanced Search
Latest topics
» Thames TideFest 10th September 2017
Sun Aug 20, 2017 11:51 pm by David Harvey

» Eel Trap Results 2017
Sun Aug 20, 2017 11:47 pm by David Harvey

» Do you recognise any of these men?
Sat Aug 19, 2017 8:44 pm by Ed Randall

» Roads closed everywhere ~ July 29th/30th ~ bike race
Wed Jul 26, 2017 9:17 am by Ed Randall

» Better access to free Thames fishing in Reading
Fri Jun 16, 2017 10:08 am by Ed Randall

» Eel screens on Water Works intakes
Tue May 23, 2017 10:26 pm by Julian Jones

» River Thames Conditions - Quick Dial Numbers
Sun May 21, 2017 10:00 am by Ed Randall

» Ap[ril showers? If only! Drought beckons...
Thu May 04, 2017 6:56 pm by Ed Randall

» Abbey river this Saturday (12/5/2012)
Thu Apr 27, 2017 4:41 pm by Ed Randall

» Molesey Eel Monitoring Training ~ 29th April 2017
Mon Apr 24, 2017 11:12 am by David Harvey

» Thames Water fined a record £20m for River Thames pollution
Fri Mar 24, 2017 1:54 pm by Stephen Bond

» Crane Riverfly Training ~ May 6th 2017
Thu Mar 16, 2017 9:08 am by Ed Randall

» TAC visit to Tideway Tunnel Exhibition in Parliament
Wed Mar 15, 2017 7:32 am by John LeSurf

» "Citizen Crane" project - sampling dates
Thu Mar 02, 2017 4:24 pm by Ed Randall

» Egham & Stains bankside enhancement followed by brewery trip
Sun Feb 19, 2017 6:27 pm by Ed Randall

» SE Rivers Trust needs help on Hogsmill
Tue Feb 14, 2017 2:23 pm by Ed Randall

» Crane volunteering opportunities
Fri Jan 27, 2017 5:38 pm by Ed Randall

» Seal (with enormous fish) in Thames near Richmond Lock
Wed Jan 25, 2017 8:34 am by Ed Randall

» [Petition] to eradicate size and catch limits for pike to be taken and culled
Wed Jan 25, 2017 8:27 am by Ed Randall

» *Thames Tunnel (Tideway Tunnel)*
Tue Jan 24, 2017 9:42 pm by Ed Randall

» reels for sale
Thu Jan 12, 2017 9:51 am by JeffHowe

» A new address for 2017 ~ forum.rivertac.org
Sun Jan 01, 2017 11:06 am by Admin

» New users - Registration issues
Thu Dec 29, 2016 11:47 am by Ed Randall

» Shepperton river death - Van removed near Dockett Eddy Lane
Thu Dec 22, 2016 9:54 am by Ed Randall

» EA Pollution incidents: 2015 evidence summary
Mon Nov 21, 2016 5:04 am by David Harvey

» Ham & Petersham cleanup Saturday 19th Nov
Sat Nov 12, 2016 6:01 pm by Ed Randall

» LIVE THAMES TEMPS AND CLARITY - TAC exclusive!
Thu Nov 10, 2016 9:51 pm by Stephen Bond

» Citizen Crane Forum at ZSL - Mon 14th Nov 2016
Thu Nov 10, 2016 8:36 am by Ed Randall

» fishing trolleys
Sun Oct 30, 2016 11:23 am by Harry Notley

» Draw off 2016
Sat Oct 29, 2016 2:24 pm by Ed Randall

Angling Data View
River Levels
UK Map

Thames Tides

Share | 
 

 Quagga mussel - briefing note 2

View previous topic View next topic Go down 
AuthorMessage
Ed Randall

avatar

Male Posts : 3181
Join date : 2010-11-19
Age : 51
Location : Twickenham

PostSubject: Quagga mussel - briefing note 2   Mon Oct 27, 2014 5:58 pm

Update: Quagga mussel in UK

Briefing note 2

24 October 2014

Introduction

On the 7 October we reported the first record of the quagga mussel in the Wraysbury Reservoir and the
Wraysbury River near Staines (Briefing note 1.1). Further investigations have confirmed that the mussel is
also present at the following locations:  The Queen Mother Reservoir, Queen Elizabeth ll / Bessborough
Reservoirs and the Queen Mary Reservoir, all to the west of London; and Warwick East Reservoir,
Warwick West Reservoir and William Girling Reservoir, all located in the Lee Valley to the North of London.
We will continue to investigate other high risk locations and will update the distribution map periodically as
we make new discoveries.
The quagga mussel (Dreissena rostriformis bugensis) is a highly invasive non-native species the arrival of
which in the UK has been expected for a number of years. Like the now widespread zebra mussel, this
species comes from the Ponto-Caspian region (an area around the Black and Caspian seas).
Due to its filtering capacity and ability to produce dense populations, it can significantly reduce native
biodiversity, and alter whole freshwater ecosystems. It is expected to occupy similar habitats to the zebra
mussel, but can survive in some places that zebra mussel can't and can even displace them. It feeds on
the varieties of algae that compete with blue-green algae, often resulting in toxic algal blooms. It is also a
nuisance and economic problem when growing in pipes of water treatment plants or commercial ships.

What is being done?

There is no effective control or eradication method for quagga mussel once it has established in a reservoir
and the downstream river system. As recommended in a recent review of options to deal with the arrival of
quagga mussel commissioned by Defra, the best method of slowing the spread of the quagga mussel
is by applying better biosecurity through the Check, Clean, Dry approach. We are urging all water
users to follow this approach.
We have contacted relevant stakeholders to make them aware of the new arrival and our response to it,
and will continue extra monitoring to investigate the extent of the population. We are identifying those
waters that should be sampled by assessing the potential pathways for the spread of Quagga mussels into
other waters.
We are working with Thames Water to promote the application of "Check, Clean, Dry" to activities at their
reservoirs. We have produced a distribution map (below) to help people identify water bodies that are
known to contain quagga mussels (while reminding people that good biosecurity should be applied
everywhere).

Biosecurity

The larvae of quagga mussel (veligers) are not visible to the naked eye which makes drying a critical step
in applying good biosecurity. There's good evidence that rinsing or soaking in hot water improves the
chances of killing larvae and adults, and is a suggested addition to the Check, Clean, Dry approach.
Check, Clean, Dry is important not only to help slow the spread of this species, but also other invasive
species that might be present in our waterways. It is especially important to prevent the spread of invasive
non-native species to isolated locations (not connected to other water bodies) and protected areas such as
Sites of Special Scientific Interest. Any structures or equipment such as jetties or boats which have been
submerged in water for a time, pose a higher risk of spreading invasive species and these must be
thoroughly defouled, cleaned (preferably with a hot water pressure washer) and dried before reuse, in
accordance with the guidance for the biosecurity of submerged structures on the non-native species
secretariat website. This site also provides guidance for anglers and watercraft users. .  

Identifying the quagga mussel

Quagga mussels can be hard to distinguish from zebra mussels, which are widespread in England and
Wales. Quagga mussels are able to colonise freshwater rivers, canals and lakes. They are small in size
(similar to zebra mussel) but lack the strong ridge that gives zebra mussel its 'D' shape. Quagga mussel is
more rounded and so when placed on its front it will roll to one side, unlike the zebra mussel. More
information on the quagga mussel and its identification is available from the  species alert pages of the
Non-native Species Secretariat.
Identification sheet: https://secure.fera.defra.gov.uk/nonnativespecies/downloadDocument.cfm?id=802

If you spot a Quagga Mussel, you must report it:
Send a photograph along with details of the record to: email: alertnonnative@ceh.ac.uk or go to: http://www.nonnativespecies.org/alerts/index.cfm?id=5
Remember: Quagga mussels are hard to distinguish from the more common zebra mussel. Ensure your
specimen has some of the key features of quagga before sending in your record.

_________________
TAC Secretary
Angling Trust member #61385
Back to top Go down
 
Quagga mussel - briefing note 2
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» Exhaust note
» The Brown Note
» Amazing new nano paint tech as featured on the new Nissan Note
» I got a note today in the mail from Minelab re a possible fault in the Mono coil that comes with the 5000
» 1995 buick riviera supercharged has no spark

Permissions in this forum:You cannot reply to topics in this forum
Thames Anglers' Conservancy Members Forum :: Open Section :: News Board :: Environment Agency-
Jump to: