Displaying items by tag: fish kill
It’s understood that hundreds if not thousands of fish including brown trout, juvenile salmon and bream may be affected by a fish kill on a tributary of the Bandon River in Co Cork.
IFI says it attended the site on Monday evening (26 August) following a report from a local angler — and initial investigations point to “a significant algal bloom” as the cause.
“Efforts are ongoing to assess the extent of the fish kill and an aerial survey of the lake is underway,” IFI adds.
“Cork County Council has taken water samples from the lake and river and is liaising with Inland Fisheries Ireland in their investigation.”
A report was received on Monday 1 July from Waterways Ireland of the fish kill, which has claimed some 300 fish of various species including roach, rudd, bream and pike.
The investigation, which commenced immediately and remains ongoing, has identified agricultural discharge to a River Ryewater feeder that enters the canal at Kilcock.
IFI says work is now ongoing to ensure that there is no further polluting discharge to the system from this location.
It has also has issued a fresh appeal to farmers to remain vigilant in avoiding water pollution during the summer months when harvesting silage and spreading slurry.
Silage effluent is a significant pollutant and if allowed to enter a waterway can potentially lead to fish death and habitat degradation.
IFI has a confidential hotline number at 1890 34 74 24 or 1890 FISH 24 for the public to report incidents of water pollution, fish kills and illegal fishing. For more visit fisheriesireland.ie.
#FishKill - Inland Fisheries Ireland (IFI) prosecuted Irish Water yesterday (Tuesday 5 February) at Ballina District Court for the discharge of a harmful substance into the Ballycorrigan River on 17 May last year, causing a fish kill.
Among the fish mortalities were 100 brown trout of different age groups, three juvenile salmon and one stone loach which were killed when a cleaning substance was discharged into the river.
Judge Patrick Durcan heard evidence from Michael Fitzsimons, a senior fisheries environmental officer with IFI, that a detailed investigation was carried out following a pollution report received from the general public.
It found that the fish kill was caused by a combination of effluents arising from an uncontrolled maintenance event from Irish Water’s Ballina/Killaloe wastewater treatment plant.
Irish Water entered a guilty plea. Judge Durcan directed Irish Water to pay IFI’s legal costs of €2,290 and fined the body €2,500.
Judge Durcan stated that Irish Water did not take into consideration the environment and conditions when discharging into the river and that Ireland’s rivers are its most important natural resource.
He said that while these resources are maintained under the vigilance of Inland IFI, Irish Water needs to be vigilant, too.
Amanda Mooney, director of the Shannon River Basin District with IFI, said: “Irish Water co-operated fully with Inland Fisheries Ireland’s investigation and updated its cleaning protocols for the use of chemicals in treatment plants nationwide with more appropriate methods now in use as a direct result of this incident.
“Our fisheries resource is an extremely valuable asset, both from a recreational and economic perspective and it is crucial that we continue to protect and conserve it for future generations to enjoy.”
Inland Fisheries Ireland (IFI) has noted with caution the findings from the Environmental Protection Agency’s (EPA) report on water quality in 2017.
While it welcomes the fact that the number of fish kills in Irish waters were at a historic low last year, IFI is calling for continued awareness of water quality issues in light of the EPA’s conclusion that water quality is once again in decline.
According to this latest report, there was 14 fish kills in 2017, affecting 7.8km of river with 2,123 dead fish recovered. This is significantly lower than the worst years of 1987 and 1989 when there were more than 100 fish kills reported.
IFI’s Environmental Officers carried out 26,000 environmental inspections last year across agricultural sites, habitats, industrial sites, wastewater and water treatment plants, civil engineering sites and forestry sites.
Despite the positive drop in serious pollution events causing fish mortalities, IFI remains concerned about the reduction of water quality, with the EPA reporting a 3% drop in river water quality since 2016 and a 0.6% loss in high-quality river sites.
The inland fisheries and sea angling resource contributes €836 million to the Irish economy every year and supports 11,000 jobs in rural communities.
“Ireland has some of the best wild fisheries in Europe and while water quality in Ireland still compares favourably with our European neighbours. The current decline is a source of concern as any impact on the quality of our waters can have a negative impact on the freshwater fisheries resource,” said IFI chief executive Dr Ciaran Byrne.
“Not only is the quality of our natural environment and aquatic habitat inextricably linked to the appeal of Ireland as an angling and holiday destination, it is also a very important source of wellbeing for our people.
“It is essential that we protect and conserve our freshwater assets, meaning our rivers and lakes. The long-term conservation of the resource requires maintenance of healthy and ecologically viable ecosystems.
“That means that we need to prioritise monitoring and protecting water quality as well as dealing with other issues such as removing fish migration barriers, improving practices which cause physical changes to fisheries habitat, dealing with changes in water quantity and controlling the spread of invasive species,” Dr Byrne added.
Fisheries investigators found dead fish over a 5km stretch of the river in the Tolka Valley Park area, following the report on Tuesday 18 September.
According to IFI, a “significant source of polluting material has been identified” and samples were taken for analysis.
In the meantime “relevant parties are undertaking appropriate remedial action” as the investigation continues.
IFI will begin operations in 2019 to remove the aquatic plant Lagarosiphon major from the lough, after successful cutting and picking operations over the summer months this year.
In addition to these management operations, IFI commenced a research project last month which aims to establish the current distribution of L major in Lough Corrib.
New innovative methods are being trialled to survey the aquatic plant as part of this research. These include unmanned aerial drones, sub-aquatic remotely operated vehicles (ROVs) and modern remote sensing techniques.
Speaking as he visited IFI’s stand at the National Ploughing Championships, Minister Kyne also asked the fisheries body and his department to continue liaison with the National Parks and Wildlife Service (NPWS), who have responsibility for the legislation covering Alien Invasive Species (AIS).
Inland Fisheries Ireland has confirmed that a large fill kill occurred on the Ollatrim River, a tributary of the Nenagh River, Co. Tipperary last week. Fisheries Officers attended the site at Ballinahemery Bridge near Ballymackey, Nenagh, Co. Tipperary on Monday, 9th July 2018 after receiving a report.
In total, 14,749 fish were estimated dead with dead fish observed over a five kilometre stretch of the river. The species affected included brown trout (1,400), lamprey (10,500), Stoneloach (805), Minnow (1,820), Salmon (70), Crayfish (70) and Stickleback (84).
Inland Fisheries Ireland immediately commenced an investigation following the discovery of the fish mortality. Indications are that the fish kill occurred on Sunday (8th July) and locals have reported observing one or two dead fish on Saturday evening. This is the largest fish kill of Lamprey, a protected species, in recent years and it is anticipated that recovery will take several years.
The investigation to identify the source of the fish kill is continuing this week. The cause appears to have been a chemical agent, possibly a herbicide or pesticide, which has now passed through the system.
Inland Fisheries Ireland is reminding the public and the farming community that if they are using spraying equipment to be aware that these herbicide and pesticide chemicals, even when diluted with water, are liable to be extremely toxic to all aquatic species and fish in particular. Any mixing must be done far from natural watercourses, especially in the current conditions when diluting waters are in short supply, therefore, increasing the toxicity of the chemical.
If mixing chemicals, washing or using spraying equipment for any purpose, particular care must be taken to ensure that the rinsing of equipment does not take place near any water body or watercourse including small drains. Any washing must be carried out in a manner that will not pollute the waters.
Inland Fisheries Ireland has a confidential hotline number to enable members of the public to report incidents by telephone 1890 34 74 24 or 1890 FISH 24. The phone line is designed to encourage the reporting of incidents of illegal fishing, water pollution and invasive species.
On the evening of Wednesday, 6th June officers of Inland Fisheries Ireland received a report from a member of the public in Claremorris, Co Mayo regarding a fish kill on the Ballygowan River (one of the prime spawning tributaries of the Robe River), which flows into Lough Mask.
Investigations are still ongoing. However, it is believed that the fish kill was the result of 'effluent of agricultural origin' although the precise source has not as yet been identified. Local reports noted fish, primarily wild brown trout, in an agitated state in the river on Tuesday evening 5th June.
The stream where the mortalities occurred currently shows no sign of enrichment, and it is therefore probable that some polluting matter of a transient nature passed through the river and has since dissipated downstream.
Regretfully, over a thousand wild brown trout from 0-4 years old have been removed dead from the river. Other fish mortalities included stone loach and crayfish.
Given the extent of the damage to the river it will take some years for this stretch affected to make a full recovery.
Greg Forde, Head of Operations at Inland Fisheries Ireland, said: “Currently, water levels are at an all-time low and water temperatures are getting very high for trout and salmon. These factors combined can mean that a small amount of polluting matter can have devastating results. Inland Fisheries Ireland is calling on all farmers and silage contractors, in particular, to be extremely careful in the current conditions to ensure that no effluent is released near drains, streams and rivers, and silage clamps are properly bunded. Extreme care should be taken when spreading slurry to avoid all water courses in order to protect our valuable natural rivers and streams.”
The attached photos show just a proportion of the fish recovered by officers of Inland Fisheries Ireland following the fish kill.
Water samples have been taken for analysis and investigations are ongoing.
IFI is also asking the public to help protect and conserve the fisheries resource by reporting incidents or suspicions of illegal fishing to its confidential hotline number telephone 1890 34 74 24 or 1890 FISH 24.
#Angling - Scientists at the Marine Institute’s Fish Health Unit are conducting further testing on sample carp from The Lough and Belvelly in Cork after the recent outbreak of suspected carp edema virus.
The tests include sequencing of the viral DNA to confirm its identity, and until confirmed the current findings shall be regarded as preliminary, according to a statement from the Marine Institute.
Molecular tests for Koi Herpesvirus Disease (KHV), a listed disease under European Fish Health legislation, were negative for all fish sampled. Additional molecular tests for cyprinid herpesvirus (other than KHV) were also in progress as of yesterday, Thursday 17 May.
The gills and skin of the sampled fish revealed an extremely high infestation of trichodinid parasites along with a fungal infection. White spots on the scales were also microscopically examined but there was no evidence of Ichthyophthirius multifilius infection.
Virological screening for Spring Viraemia of Carp is still ongoing with no virus observed to date. Bacteriological tests have revealed no growth of bacteria.
“While we’ve identified the presence of CEV — known to cause koi sleepy disease — in all the samples tested to date at the Marine Institute, we are still carrying out further tests for confirmation of the cause of the carp mortalities at The Lough and Belvelly lake,” said Dr Neil Ruane from the Fish Health Unit.
Dr Jeff Fisher, director of marine environment and food safety service at the Marine Institute, added: “Though the ultimate cause of the introduction of the disease agent into the loughs cannot be determined from current information, the loss of significant numbers of carp in these two lakes highlights the need for vigilance among anglers and other recreational users of Irish waters in the cleaning of their equipment and gear thoroughly after use, and also for the need for fishery owners and members of the public to be aware of the potential risk of transferring fish that may carry disease into the wild, and to never release ornamental fish into lakes or rivers.
“We’re continuing to work closely with Inland Fisheries Ireland and Cork City Council, and the Cork Carp Anglers Club to determine the cause of this fish kill, contain the incident, and identify appropriate biosecurity measures for the future.”
More than 750 carp were lost in the outbreak at The Lough in Cork city centre earlier this month, with the Cork Carp Anglers Club estimating the cost of replacing even a fraction of this number at €200,000 or more.
It’s since emerged that more than 750 carp were lost in the outbreak at The Lough, which hundreds more removed from the private Belvelly fishery near Cobh.
However, according to the Cork Carp Anglers Club, restocking cannot happen before issues with biosecurity and water quack are dealt with.
The Irish Examiner has more on the story HERE.
The poxvirus causes a disease known as ‘koi sleepy disease’ in both koi and common carp.
The fish kill was first reported at The Lough in Cork city centre last week, with subsequent reports at Belvelly Lake in Cobh. Some 450 carp were removed from the former, and over 20 from the latter, as well as live samples from both for analysis.
At present, while tests are ongoing and further tests are carried out on the CEV detected, this is being treated as a ‘suspect positive’ and is not confirmed as the causative agent of the mortalities until all tests have been completed.
Inland Fisheries Ireland (IFI) recommends that stringent biosecurity protocols continue to be implemented. All mortalities continue to be removed and disposed of in a bio-secure manner.
Angling remains suspended at both locations, as well as at Inniscarra and Carrigadrohid Reservoirs.