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Long-term effects of temperature on gonad production, colour and flavour of the sea urchin Glyptocidaris crenularis

  • Chong Zhao (a1), Xiaofei Tian (a1), Ping Sun (a1), Lunchao Hu (a1), Wenping Feng (a1) and Yaqing Chang (a1)...

Abstract

The increasing market demand for Glyptocidaris crenularis shapes its great potential for aquaculture. Temperature is an important factor affecting gonad production and quality of sea urchins. Therefore, it is essential and valuable to carry out an evaluation of the temperature effects on gonad production and quality in G. crenularis before potential aquaculture. Here, we investigated the long-term effects of temperature on gonad production, colour and flavour in G. crenularis. There was no significant difference of test diameter, height and body weight between the sea urchins in high (16–23°C) and low (12–16°C) temperatures (P > 0.05). Glyptocidaris crenularis showed significantly higher gonad production and index in high temperature and in low temperature (P < 0.05). L*, a*, b* readings were slightly higher in the low temperature groups, although no significant difference was found (P > 0.05). Subjective colour and flavour ratings found that G. crenularis in the low temperature group showed significantly better colour (P = 0.003) and flavour (P < 0.001) than those in the high temperature group. The present study provides valuable and insightful information into the establishing G. crenularis aquaculture.

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Corresponding author

Correspondence should be addressed to: Y. Chang, Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 116023, China email: yaqingchang@hotmail.com

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Keywords

Long-term effects of temperature on gonad production, colour and flavour of the sea urchin Glyptocidaris crenularis

  • Chong Zhao (a1), Xiaofei Tian (a1), Ping Sun (a1), Lunchao Hu (a1), Wenping Feng (a1) and Yaqing Chang (a1)...

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