The Chatham Islands to the East of the South Island of New Zealand are in an area that has been identified as experiencing frequent marine heatwaves. We investigated the effect of changing sea surface temperatures on adult and sub-adult pāua (Haliotis iris) collected from Ascots Beach and Owenga Harbour in the Chatham Islands, between 2020 and 2022. Pāua at the two sites reacted differently to temperature changes based on microbial diversity and metabolic profile findings. Site specific differences were detected in histological assessments with pāua from Ascots Beach showing reproductive abnormalities and pāua from Owenga Harbour showing an increased presence of kidney stones.
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