Determining the biological zero for gonadal development razor clams Sinonovacula constricta (lamarck 1818) in Zhejiang, China

Baobao Xue; Delong Meng; Hao Li; Wei Liang; Donghong Niu; Jiale Li; Heding Shen

Aquaculture and Fisheries (Jan 2021)

Determining the biological zero for gonadal development razor clams Sinonovacula constricta (lamarck 1818) in Zhejiang, China

Baobao Xue,
Delong Meng,
Hao Li,
Wei Liang,
Donghong Niu,
Jiale Li,
Heding Shen

Affiliations

Baobao Xue: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Delong Meng: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Hao Li: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Wei Liang: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Donghong Niu: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
Jiale Li: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Corresponding author. 999 Huchenghuan Road, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China.
Heding Shen: Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics Breeding, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Corresponding author. 999 Huchenghuan Road, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China.

Journal volume & issue: Vol. 6, no. 1
pp. 56 – 62

Abstract

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The biological zero of gonadal development and the effective accumulated temperature of one and two-year-old razor clams Sinonovacula constricta (Lamarck 1818) were studied in Sanmen County, Zhejiang Province, China between April 2016 to October 2017, using a new variety named “Shen-Zhe No. 1”. The biological zero was determined by using the rule of effective accumulated temperature and the linear regression method, which was confirmed using a histological analysis of the full gonadal development cycle. The results showed that the biological zero of gonadal reproduction of 1-year-old and 2-year-old S. constricta was the same: 20.8 °C. When the temperature reached 20–21 °C, analysis of the histological sections indicated that more than half of the S. constricta individuals initiated gonadal development. The average effective accumulated temperature over two years was 806 d °C. This study contributes to our understanding of the regulation and control of gonadal maturation, suggesting that changes in the spawning and breeding season during one-year of farming using the new variety of razor clam could provide an economic benefit to industrialized large-scale spat production. The results demonstrated that the razor clam S. constricta is a typical clam of the accumulative temperature mature oviposition type. In addition, although S. constricta does not display hypothermy, it requires a lower temperature for gonadal maturity and spawning.

Published in Aquaculture and Fisheries

ISSN: 2468-550X (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: https://www.keaipublishing.com/en/journals/aquaculture-and-fisheries

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