Fish passes need to cater for all species – not just salmonids
During August 2019 I objected to a planning application by Waterways Ireland for rehabilitation works and construction of a fish pass (rock ramp) at Tinnahinch Weir Lower on the River…
Author: Dr. Will O'Connor
Lampreys still blocked at Annacotty Weir
Annacotty weir is located on the River Mulkear, Co Limerick, Ireland. It is a tributary of the Lower River Shannon and a significant proportion of the River Mulkear is designated…
Sea Lamprey migration blocked by weir
Sea lampreys Petromyzon marinus running at Annacotty weir on the Lower River Mulkear, Co Limerick, during early June 2018. Overnight rain caused river levels to rise and this stimulated upstream…
Having to mitigate for lampreys – something you might not have reckoned on
Heron with River Lamprey* in the River Dodder this week. No aquatic ecology surveys were completed for River Dodder Flood Alleviation Scheme. In the reports prepared to inform the EIS…
Introduction to lampreys and issues they face in Ireland
Three species of lamprey occur in Ireland; the brook lamprey Lampetra planeri, the river lamprey Lampetra fluviatilis and the sea lamprey Petromyzon marinus. The lampreys (family Petromyzonidae) belong to a…
Shannon Sea Lamprey Documentary
We were delighted to work recently with BBC Earth on a documentary on Sea Lampreys Petromyzon marinus. The filming took place during early-June 2017 on the old River Shannon at Castleconnell, Co Limerick.…
Lamprey Surveys 