High temperatures alter the patterns of growth and development and cause physiological and biochemical stresses in Chinese cyclina Cyclina sinensis

Yihua Chen; Guolong Zhou; Xinshu Zheng; Ang Hu; Zeyong Kong; Zhengbing Zhao; Zhiguo Dong

Aquaculture Reports (Jun 2024)

High temperatures alter the patterns of growth and development and cause physiological and biochemical stresses in Chinese cyclina Cyclina sinensis

Yihua Chen,
Guolong Zhou,
Xinshu Zheng,
Ang Hu,
Zeyong Kong,
Zhengbing Zhao,
Zhiguo Dong

Affiliations

Yihua Chen: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Guolong Zhou: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Xinshu Zheng: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Ang Hu: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Zeyong Kong: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Zhengbing Zhao: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
Zhiguo Dong: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China; Corresponding author at: Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China.

Journal volume & issue: Vol. 36
p. 102093

Abstract

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Prolonged high temperature is a critical environmental factor contributing to the mass mortality of clams in summer. We investigated the growth and development of Cyclina sinensis cultured at different temperatures (25, 28, 31, and 34 °C) and their physiological and biochemical responses following a long period of exposure. The mortality rates at 31 °C and 34 °C were significantly higher than at 25 °C and 28 °C after 48 d (P < 0.05). The overall survival rates at 25 °C and 28 °C did not differ significantly from the control group (at natural seawater temperature), but were significantly lower at 31 °C and 34 °C (P < 0.05). The growth parameters of C. sinensis in all of the experimental groups were significantly higher than in the control group (P < 0.05), with the highest specific growth rate at 28 °C. The shell to soft tissue ratio was greatly increased in the 31 °C and 34 °C groups and was significantly higher than in the other groups after 32 d (P < 0.05). The condition factor at 28 °C was significantly higher than in the other groups (P < 0.05), and started to decline after 32 days at 31 °C and 34 °C. The hepatopancreatic and gonadotropic indexes were significantly lower at 31 °C and 34 °C than in the control group (P < 0.05). Appropriate temperature rises increased the filtration rate and ingestion rate but these were clearly inhibited at 31 °C and 34 °C. The activities of superoxide dismutase, catalase, acid phosphatase (ACP), and lysozyme (LZM) were significantly reduced at 31 °C and 34 °C (P < 0.05). The activities of ACP, LZM, amylase, and the proteases were significantly increased at 28 °C (P < 0.05). Our study showed that high temperatures accelerate the growth of shells but inhibit the growth of soft tissues, negatively affecting the development, physiology, and biochemistry of C. sinensis. Cyclina sinensis demonstrates better overall performance at 28 °C, but aquaculture production would be severely affected if the temperature reaches, or exceeds 31 °C.

Published in Aquaculture Reports

ISSN: 2352-5134 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: http://www.journals.elsevier.com/aquaculture-reports/

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