| 摘要: |
| 平端深海偏顶蛤（Gigantidas platifrons）是广泛分布于西太平洋深海热液和冷泉生态系统中的优势种和共有种，也是深海化能生态系统中重要的生境营造种。以南海F冷泉平端深海偏顶蛤为研究对象，基于贝壳日生长轮方法，分析了平端深海偏顶蛤的年龄与生长速率，建立了其年龄与贝壳壳长关系的生长方程。同时，结合获得的生长方程，分析了南海F冷泉采样点（119.285 6°E，22.115 4°N）平端深海偏顶蛤种群的年龄结构。研究结果表明，采样获得的平端深海偏顶蛤种群的最大壳长为11.4 cm，最大寿命为13.5龄。研究区域的贝壳长度分布集中在4~7 cm，占比60%；年龄分布集中在2~4龄，占比49.7%。相关研究结果为进一步开展平端深海偏顶蛤的生长研究提供了基础数据，有助于深入了解冷泉区域的种群动态变化规律。 |
| 关键词: 平端深海偏顶蛤 冷泉 南海 年龄结构 |
| DOI：10.11693/hyhz20220700193 |
| 分类号:P76 |
| 基金项目:国家自然科学基金项目，42030407号。 |
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| GROWTH AND AGE STRUCTURE OF GIGANTIDAS PLATIFRONS POPULATION BASED ON THE SHELL GROWTH RING METHOD |
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HU Xi-Yuan1,2,3, ZHOU Li1,2,3, LI Chao-Lun1,2,3
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1.Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.Key Laboratory of Marine Ecology & Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;3.University of Chinese Academy of Science, Beijing 100049, China
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| Abstract: |
| Gigantidas platifrons is a dominant and common species widely distributed in deep-sea hydrothermal and cold seep ecosystem of the Western Pacific, and it is also an important habitat builder in the deep-sea chemical energy ecosystem. Through laboratory experiments, taking the dominant species of F cold seep in the South China Sea as the research object, based on the daily growth cycle of the shell, the age and growth rate of Gigantidas platifrons were analyzed, and a growth curve model was established for describing the relationship between the age and shell length of G. platifrons. In addition, combined with the obtained growth curve model, the age composition of G. platifrons in F cold seep in the South China Sea was analyzed. The results show that the maximum length of G. platifrons shell is about 11.4cm and the maximum age is about 13.5 years. The shell length distribution in the study area is concentrated in 4~7 cm, accounting for 60%; and the age distribution is concentrated in 2~4 years, accounting for 49.7%. This study provided basic data for further research on the growth dynamics of G. platifrons in the future, which is helpful to have a more detailed understanding of the population dynamics in the cold seep area. |
| Key words: Gigantidas platifrons cold seep the South China Sea age structure |
