Aging an Abalone species. How old are pāua? An epigenetic clock to sustainably manage a taonga

Pāua (Haliotis australis are / an Abalone species) are a vital part of Aotearoa-New Zealand’s cultural identity, valued as a food for both domestic and export markets, and for its decorative shell. However, pāua stocks are dwindling and the sustainability of pāua fisheries is paramount. Until now, the challenge of accurately measuring pāua age has hindered effective management. This research project will enable pāua age determination by understanding the changes to DNA associated with aging in pāua. Recent breakthroughs in DNA analysis, specifically methylation, will be used to develop a DNA-based clock that can age pāua. This DNA methylation analysis has been identified in vertebrates, but will be a novel approach for aging shellfish. This innovative approach holds promise for transforming pāua fisheries management and conservation efforts. By accurately assessing age, we can enhance our understanding of stock resilience, set sustainable limits, and ensure the long-term viability of pāua populations. Our collaborative initiative brings together scientists, industry experts, Māori, and fisheries modellers, harnessing collective expertise to construct this innovative tool. Through this programme, Aotearoa-NZ will reaffirm its commitment to sustainable fisheries management, solidifying its position as a global leader in evidence-based management and marine conservation. By making informed decisions grounded in sound science, we safeguard our oceans for future generations while advancing our economic, cultural, and environmental objectives.