Journal article

Stocking density and rearing environment affect external condition, gonad quantity and gonad grade in onshore sea urchin roe enhancement aquaculture

Fletcher Warren-Myers, Stephen E Swearer, Kathy Overton, Tim Dempster

Aquaculture | Elsevier | Published : 2020

Abstract

Finding the ideal density to optimise growth, health and welfare of aquaculture species reared in cage or tank environments allows farmers to produce the best quality product per unit area. Appropriate stocking densities are well known for most major aquaculture species, but limited information exists for the developing sea urchin aquaculture industry. The temperate purple sea urchin Heliocidaris erythrogramma is a prime candidate for aquaculture, yet how stocking density and/or the rearing environment influence urchin health and roe production remain unknown. Here, we tested whether stocking density (low vs. high) and rearing environment (individual vs. group) influences urchin external con..

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Grants

Awarded by AgriFutures project


Funding Acknowledgements

This work was supported by AgriFutures project #PRJ-010410 "Solving key industry bottlenecks for sea urchin roe enhancement" and industry-partner AquaTrophic Pty Ltd. We thank Luke Barrett, Dean Chamberlin, Ben Cleveland and Rebecca Morris for assistance with urchin collection.