ORIGINAL RESEARCH article
Front. Mar. Sci.
Sec. Marine Biology
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1599456
This article is part of the Research TopicCurrent Research on Fish Otoliths and their ApplicationsView all 11 articles
Study on the Age and Growth Characteristics of Sepia esculenta in the East coast of ChinaCoastal Waters of Jiangsu Based on Beak Microstructure
Provisionally accepted
- 1College of Marine Sciences, Shanghai Ocean University, Shanghai, China
- 2The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai, Shanghai, China
- 3Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Shanghai, China
- 4Marine Fisheries Research Institute of Jiangsu Province, Nantong, Jiangsu Province, China
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This study investigates the daily age and growth characteristics of Sepia esculenta in the coastal waters of JiangsuEast coast of China based on beak microstructure analysis. A total of 360 specimens were collected from September to November 2021, among which 178 individuals (81 females and 97 males) were successfully aged using beak growth increments. The results indicated that the mantle length (ML) of S. esculenta ranged from 55 to 201 mm, and body weight (BW) ranged from 30 to 667 g, with no significant differences between sexes. The sagittal section of the upper beak rostrum (RSS) exhibited distinct periodic growth increments, confirming its reliability for age determination. The estimated age ranged from 59 to 152 days, with an average of 106.44 ± 17.35 days for females and 103.86 ± 19.70 days for males. The relationship between ML and age was best described by a linear growth model, whereas the relationship between BW and age followed an exponential model for females and a power function model for males. Growth rate analysis revealed that both ML and BW exhibited varying growth trajectories with increasing age. The highest absolute growth rate (AGR) of ML was observed at 120-150 days for females (1.23 设置了格式: 字体颜色: 红色 mm/d) and at 60-90 days for males (1.93 mm/d). These findings provide crucial insights into the population dynamics of S. esculenta in Jiangsu's coastal waters, contributing to resource assessment and sustainable fisheries management.
Keywords: Sepia esculenta, Beak microstructure, age, Growth, the Coastal Waters of
Received: 25 Mar 2025; Accepted: 16 May 2025.
Copyright: © 2025 Liu, Ou, Zhou, Zhang, Xiao, Zu, Zhu and Hu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Bilin Liu, College of Marine Sciences, Shanghai Ocean University, Shanghai, China
Hu Zhang, Marine Fisheries Research Institute of Jiangsu Province, Nantong, Jiangsu Province, China
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