“…This fishery has grown drastically since the early 1990s when an increase in export markets saw a rise in both landings and prices (Fahy et al, 2005). Concerns are growing over the sustainability of whelk populations in certain areas as there were reports on collapses of some fished populations (Jersey - Shrives et al, 2015;Ireland -Fahy et al, 2005;North Sea/Netherlands -Ten Hallers-Tjabbes et al, 1996) although it has not been confirmed that these declines are necessarily fishery induced (Ten Hallers-Tjabbes et al, 1996). This has prompted an increase in research concerning B. undatum in recent years covering important topics such regional variation in size at maturity and maturity assessment (Haig et al, 2015;McIntyre et al, 2015;Borsetti et al, 2018;Emmerson et al, 2018); fishery based assessments of catches and population structures (Shrives et al, 2015;Woods & Jonasson, 2017;Emmerson et al, 2018); population genetics (Pálsson et al, 2014); mortality estimations (Laptikhovsky et al, 2016) and age determination (Hollyman et al, 2018a(Hollyman et al, & 2017.…”