| 基于混合效应模型的海州湾方氏云鳚的生长动态及其影响因素分析 |
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| 引用本文： | 赵天亚,杨晓改,李勋,薛莹,徐宾铎,纪毓鹏,任一平,张崇良.基于混合效应模型的海州湾方氏云鳚的生长动态及其影响因素分析[J].海洋学报,2023,45(1):53-61. |
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| 作者姓名： | 赵天亚 杨晓改 李勋 薛莹 徐宾铎 纪毓鹏 任一平 张崇良 |
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| 作者单位： | 1.中国海洋大学 水产学院，山东 青岛 266003 |
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| 基金项目： | 国家重点研发计划（2018YFD0900906）。 |
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| 摘 要： | 本研究利用2015-2019年海州湾方氏云鳚（Pholis fangi）耳石样本，基于线性混合效应模型（LMEM）研究了方氏云鳚在2013-2018年内生长速度的年际变化，评估了不同年龄阶段的方氏云鳚的生长对底层温度、叶绿素含量和种群密度等外界因素的响应。结果表明：方氏云鳚个体在不同年龄的耳石增量具有明显差异，0龄平均耳石增量为0.327 mm，显著高于高龄耳石增量。模型随机效应表明，方氏云鳚的生长速度在2013-2016年呈现逐步变快的趋势，在2016-2018年波动较为明显。方氏云鳚0龄时期生长速度的主要影响因素为底层温度和种群密度，其生长速度随温度的上升先加快后降低，随种群密度的增加而降低。方氏云鳚1龄时期的生长速度受底层温度和饵料等环境因素的影响不显著，体现了成体对环境的适应能力。本研究深入解析了鱼类的生长动态对生物和非生物因素的响应，有助于应对未来气候变化对渔业生态系统的影响。
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| 关 键 词： | 方氏云鳚 耳石 环境因子 生长速度 线性混合效应模型 海州湾 |
| 收稿时间： | 2022-07-13 |
Growth dynamics of Pholis fangi in Haizhou Bay and influencing factors explored by mixed-effect models |
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| Affiliation: | 1.Fisheries College, Ocean University of China, Qingdao 266003, China2.Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China3.Field Observation and Research Station of Haizhou Bay Fishery Ecosystem, Ministry of Education, Qingdao 266003, China4.China Agriculture Press, Beijing 100125, China5.Marine Development Bureau in Qingdao West Coast New Area, Qingdao 266400, China |
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| Abstract: | According to the Pholis fangi otoliths collected from bottom-trawl surveys in Haizhou Bay during from 2015 to 2019, linear mixed-effects model (LMEM) was used to study the interannual variation of growth rate of P. fangi from 2013 to 2018 and assess the response of the growth of P. fangi at different ages to external environmental factors such as bottom temperature, chlorophyll content and population density. The results showed that the otolith increment of P. fangi differed significantly between ages, with the mean otolith increment of 0.327 mm at 0 year old, significantly higher than that at another ages. The random-effects showed that the growth rate of P. fangi showed an increasing trend from 2013 to 2015, with a fluctuating trend from 2016 to 2018. The main factors affecting the growth of P. fangi at 0 year old were bottom temperature and population density. The growth rate increased and then decreased with the increase of bottom temperature, and decreased with the increase of population density. The effect of environmental factors on the growth rate of P. fangi at 1 year old were not significant, reflecting the ability of adults to adapt to the environment. This study provided insight into the growth dynamics of fish in response to biotic and abiotic factors, which will help to cope with the impact of climate change on fishery ecosystems. |
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