Menu

Ireland's sailing, boating & maritime magazine

In association with ISA Logo Irish Sailing

Appeal For Anglers To Become Citizen Scientists As Part Of National Salmon Scale Project

3rd April 2019
732 Views
Appeal For Anglers To Become Citizen Scientists As Part Of National Salmon Scale Project Photo: Christine Breuker/IFI

Anglers are needed as citizen scientists for a new National Salmon Scale Project, says Sean Canney TD, Minister of State with responsibility for the inland fisheries sector.

Minister Canney said: “As we celebrate International Year of the Salmon, this project will help researchers understand the challenges which salmon are facing today.

“The project, which has been initiated by Inland Fisheries Ireland, aims to collect vital information through scales taken from salmon and sea trout which are caught in Irish rivers and lakes and will contribute to international efforts to conserve wild salmon.”

Fish scales record the life history of a salmon, and one scale can reveal a lot about the lifestyle and behaviour of the fish.

Scales can tell scientists what age the fish is, how many winters it spent at sea, how many times it spawned, how slow or fast it grew, what it ate and how long it spent in the river before it went out to sea.

Scales can also reveal the general feeding area where the salmon travelled to in the ocean, whether it went to the Faroe Islands, the Norwegian Sea or all the way to West Greenland. Scales help scientists to understand the biology and ecology of Irish salmon and sea trout.

As part of the project, anglers are asked to take a scale sample from a salmon or sea trout by gently scraping and removing approximately 20 fish scales using a clean knife, then post their samples to Inland Fisheries Ireland (IFI) using the sample envelopes which will be made available to them.

Scales can be removed from both harvested and catch-and-release fish. Sampling of fish for release should be handled carefully and fish should be only briefly removed from the water with every effort made to avoid injury or stress while weight should be estimated.

Information from salmon scales is used in setting conservation limits for Irish rivers. Conservation limits for each river are set based on the proportion of salmon who have spent one winter at sea and those that have spent multiple winters at sea.

The conservation limit for a river represents the number of spawning salmon required to produce the next generation of salmon and this information helps inform angling regulations and management. Information from scales on multi-sea winter salmon entering rivers in spring is also important for managing individual river stocks.

Dr Paddy Gargan, senior research officer at IFI, said: “It is important to have anglers collecting scales as they can provide broad coverage across Ireland and collect scales throughout the fishing season.

“A scale resource which includes many different river systems in Ireland over several years is a great asset from a research perspective as it allows us to examine the factors affecting salmon survival at sea. We can compare how factors, such as climate change, are impacting survival by analysing today’s salmon scales alongside those from many decades ago.”

All scales collected through the National Salmon Scale Project will be added to the National Salmon Scale Archive which is managed by IFI.

The archive, which consists of a dedicated storage facility and associated database, currently holds 19,300 scale samples from a total of 38 rivers representing 152 sampling years. The National Salmon Scale Project aims to increase the scale resource available to scientists for ongoing and future research.

IFI’s head of research and development Dr Cathal Gallagher said: “Ultimately the National Salmon Scale Project will help inform future salmon management policies and activities.

“It is fitting therefore that we are launching this campaign during International Year of the Salmon which aims to raise awareness of what humans can do to ensure salmon and their habitats are conserved and restored against a backdrop of several environmental pressures. This project offers anglers a very tangible and practical way of playing an active role in salmon conservation.”

For more information on the National Salmon Scale Project, including how to take a sample safely and to request sample envelopes, visit the project webpage. To find out more about International Year of the Salmon visit YearOfTheSalmon.org.

Afloat.ie Team

About The Author

Afloat.ie Team

Email The Author

Afloat.ie is Ireland's dedicated marine journalism team.

Have you got a story for our reporters? Email us here.

We've got a favour to ask

More people are reading Afloat.ie than ever thanks to the power of the internet but we're in stormy seas because advertising revenues across the media are falling fast. Unlike many news sites, we haven’t put up a paywall because we want to keep our marine journalism open.

Afloat.ie is Ireland's only full–time marine journalism team and it takes time, money and hard work to produce our content.

So you can see why we need to ask for your help.

If everyone chipped in, we can enhance our coverage and our future would be more secure. You can help us through a small donation. Thank you.

Direct Donation to Afloat button

Featured Sailing School

INSS sidebutton

Featured Clubs

dbsc mainbutton
Howth Yacht Club
Kinsale Yacht Club
National Yacht Club
Royal Cork Yacht Club
Royal Irish Yacht club
Royal Saint George Yacht Club

Featured Brokers

mgm sidebutton
bjmarine sidebutton
xyachts sidebutton

Featured Webcams

webcam sidebutton

Featured Associations

ISA sidebutton
ICRA
isora sidebutton

Featured Events

tokyo sidebutton
sovscup sidebutton
vdlr sidebutton

Featured Chandleries

CHMarine Afloat logo
osm sidebutton
viking sidebutton

Featured Sailmakers

northsails sidebutton
uksails sidebutton

Featured Marinas

dlmarina sidebutton

Featured Blogs

W M Nixon - Sailing on Saturday
podcast sidebutton
mansfield sidebutton
BSB sidebutton
sellingboat sidebutton

Please show your support for Afloat by donating