Research has shown that there is a genetic variance in Patiriella regularis from the North and South of New Zealand. Researchers assume that geographic barriers, and coastal upwellings, might keep various types of Patiriella regularis from being able to spread or comingle.
- "Overview of the Conservation of Australian Marine Invertebrates". Department of Environment and Heritage. 2002. Retrieved 16 August 2012.
- Ayers KL, Waters JM (2005). "Marine biogeographic disjunction in central New Zealand". Marine Biology 147 (4): 1045. doi:10.1007/s00227-005-1632-7.
- Miller M & Batt G, Reef and Beach Life of New Zealand, William Collins (New Zealand) Ltd, Auckland, New Zealand 1973
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