Species Alert for: Crayfish plague (Aphanomyces astaci).
Issued by: Nationwide Parks and Wildlife Service
View newest info on Crayfish Plague outbreaks – Up to date March 2018 and Press launch issued 20th Might 2019
NPWS are recommending that the voluntary ban of Emergency Containment Measures for the affected catchments is lifted from March 1st, 2018 however with the robust recommendation that each one water userscontinue to train vigilance and undertake procedures to minimise the danger of additional unfold of the illness.
The only handiest motion is to make use of the Examine, Clear, Dry protocol this must be accomplished routinely earlier than and after visiting a river or lake.
- Verify, Clear and permit all gear to completely DRY-out then dry for additional 48 hours.
- If drying out gear just isn’t possible gear must be both:
o Energy Steam washed at a suitably excessive temperature (no less than above 65 levels)– use of cellular steam energy washers or use of close by energy washers at Service stations in its place.
o Disinfect every thing utilizing an accredited disinfectant resembling Milton (comply with product label), Virkon Aquatic (3mg/L), Proxitane (30mg/L) or an iodine-based product for 15 minutes. Gadgets troublesome to soak might be sprayed or wiped down with disinfectant. Engine coolant water or residual water in boats/kayaks must be drained and the place potential flushed out with disinfectant.
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Nationwide map displaying contaminated catchments -Obtain full decision map (5MB)
Crayfish plague contaminated river catchments shaded in purple.
Record of rivers affected by Crayfish Plague are:
the River Bruskey/Erne (Co Cavan; detected 2015); River Suir (Co Tipperary/Waterford, detected 2017); River Deel (Co Limerick, 2017); River Barrow (Co Carlow 2017); River Lorrha (Co Tipperary, 2017); River Al (Westmeath 2018); River Maigue (Co Limerick 2019); River Clare (Co. Galway/Mayo detected 2019). There was additionally an outbreak in Co. Tyrone in Northern Eire in 2018.
River Suir – Counties Waterford and Tipperary. View map
River Deel – Co. Limerick. View map (Greatest seen if saved first then open and zoom in to see element)
Lorrha River – North Co. Tipperary. View map
River Barrow – Counties Kilkenny and Carlow. View map
River Bruskey – Counties Cavan and Longford. View map
Al River – Athlone, Co. Westmeath; River Maigue – Co. Limerick; River Clare – Counties Mayo and Galway. (Particular person website maps not obtainable for these contaminated rivers)
Because the plague can unfold all through the water our bodies related to those contaminated rivers, all connecting streams, rivers and lakes ought to be handled as contaminated and emergency containment measures additionally utilized to them.
Protected White-clawed crayfish (D. Gerke)
Lifeless White-clawed crayfish within the River Suir (B. Nelson)
Abstract of potential impacts: Institution of the crayfish plague might end in 100% mortality of the protected native White-clawed Crayfish (Austropotamobius pallipes). All through its European vary, this species has been decimated by the impression of Crayfish plague illness which unfold to Europe with the introduction of the plague service North American species of crayfish.
The implications of this illness prevalence are extraordinarily regarding. If crayfish plague continues to unfold and turn out to be established there’s a excessive chance that the native White-clawed Crayfish shall be eradicated from a lot of the island. Worryingly can be the institution of non-native crayfish because the expertise in Britain and Europe has been that these species have very extreme impacts on habitats and different species. May be potential influence on salmon and trout fisheries with the lack of tourism income from these fisheries.
What are you able to do?
- The voluntary ban on Emergency Containment Measures for the affected catchments has been lifted from March 1st, 2018 however with the robust recommendation that each one water customers proceed to train vigilance and undertake procedures to minimise the danger of additional unfold of the illness.
- Examine, Clear and permit all gear to completely DRY-out then dry for additional 48 hours.
- If drying out gear is just not possible gear ought to be:
o Energy Steam washed at a suitably excessive temperature (at the least above 65 levels)– use of cellular steam energy washers or use of close by energy washers at Service stations in its place.
o Disinfect the whole lot utilizing an accredited disinfectant comparable to Milton (comply with product label), Virkon Aquatic (3mg/L), Proxitane (30mg/L) or an iodine-based product for 15 minutes. Gadgets troublesome to soak could be sprayed or wiped down with disinfectant. Engine coolant water or residual water in boats/kayaks must be drained and the place potential flushed out with disinfectant.
- Develop into conversant in the identification of the native and non-native crayfish: view crayfish identification ideas.
- Instantly report all suspected sightings of non-native crayfish or lifeless native White-clawed Crayfish via the on-line type or to [email protected] with location coordinates and your contact particulars. If potential, please provide a photograph of the crayfish displaying the underside of the claws to assist in verifying the sighting.
- Don’t launch any non-native crayfish into Eire’s waters, it’s unlawful to take action.
- Please flow into this species alert as extensively as attainable.
Invasive standing: Crayfish plague is listed as one in every of Eire’s most invasive species by Invasive Species Eire. This species is listed by DAISIE as amongst 100 of the worst invasive species in Europe. All non-native crayfish, which can be carriers of the crayfish plague, are listed on the Third Schedule Half 2 of the European Communities (Birds and Pure Habitats) Laws 2011 in Eire. 5 non-native crayfish which have gone by way of an in depth danger evaluation course of are every assessed at MAJOR danger of impression to Eire see: http://nonnativespecies.ie/risk-assessments.
Introduction standing: Established and spreading. The plague is confirmed from 5 totally different river catchments.
Is there a reference specimen?: Sure. Specimens taken and examined for the DNA plague from all confirmed websites.
Pathway of introduction: Both the illness was launched by accident on contaminated gear (e.g. moist fishing gear, canoes/kayaks, boats and so forth used lately in affected waters within the UK or elsewhere) or else non-native species have been illegally launched to the world and have now handed the illness to the native White-clawed crayfish.
If the illness outbreak was by accident launched on contaminated gear then containment could also be potential, but when non-native crayfish have been launched then the illness is more likely to turn out to be established with extreme and doubtless irreversible ecological impression on Eire’s freshwater fauna and flora if not acted on instantly.
How the illness obtained to the Rivers and extent of unfold from preliminary websites of an infection an infection is underneath investigation. There isn’t a indication at this stage of how the illness reached the Lorrha River. It’s nevertheless recognized that the outbreak on the Suir concerned a unique pressure of the illness to that within the Cavan (2015) outbreak. Samples from the Lorrha River and the RIver Barrow are being examined to find out which pressure has brought about the outbreak of the illness.
Administration actions taken up to now: The next actions have been taken thus far:
- Website inspections to evaluate extent of native White-clawed Crayfish mortalities and to gather specimens for evaluation.
- DNA evaluation of the collected lifeless White-clawed crayfish specimens exhibits analysis of the Crayfish plague.
- Further website inspection surveys ongoing.
- Preliminary press launch and Species Alert issued to key stakeholders and the broader public on 17/05/2017 with up-dates issued as extra websites are confirmed for presence of the crayfish plague.
- Inter-agency Emergency Containment Measures have been issued first 25th Might, 2017 and up-dated as extra websites are confirmed. ALL water customers have been requested to function a momentary ban on shifting water sports activities and angling gear and so forth out of the contaminated catchments commencing instantly to keep away from the unintentional unfold of the illness to different areas. This momentary ban was lifted on March 1st 2018 however with robust recommendation that each one water customers proceed to train vigilance and undertake procedures to minimise the danger of additional unfold of the illness.
- Nationwide Biodiversity Knowledge Centre maintains an internet reporting perform: http://records.biodiversityireland.ie/record/invasives
View beforehand issued Emergency Containment Measures and additional steerage in Waterways Eire discover.
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Extra info on the White-clawed crayfish (supply NPWS)
Crayfish are freshwater family members of the marine lobsters which they resemble intently. Species of crayfish may be discovered in lots of elements of the world with most species happen in North America (330 species) and Australia (100 species). There are seven European species together with the White-clawed Crayfish which is the one species naturally occurring in Eire. The populations of European crayfish have been affected by the impression of launched primarily American species and illness (crayfish plague). The White-clawed Crayfish was listed on Annex II and Annex V of the Habitats Directive and the species is protected in Eire underneath the Wildlife Acts. Eire has worldwide duty for the White-clawed Crayfish because it stays the one a part of the EU with no launched species of crayfish and no confirmed incidence of crayfish plague. The animal stays widespread in lots of lakes, rivers and streams in limestone districts. It is a vital species ecologically each as a grazer of crops and as a favoured meals merchandise of the Otter.
NPWS has funded analysis on this species to take a look at monitoring strategies for the species in lakes. Distribution knowledge can also be gathered to tell the Article 17 evaluation.
Anybody meaning to work on this species is required to acquire a licence from NPWS underneath Sections 22, 23 and 34 of the Wildlife Acts.
Under is the recognized distribution for White-clawed crayfish in Eire together with historic data (purple dots) . Map additionally exhibits confirmed data of crayfish plague (white x) and the contaminated catchments (shaded in orange). Click on map picture obtain a full decision with map legend (Pdf 5MB).