基于耳石信息的北太平洋东西部群体柔鱼日龄和生长特征

doi:10.13292/j.1000-4890.202202.026

生态学杂志 ›› 2022, Vol. 41 ›› Issue (2): 393-403.doi: 10.13292/j.1000-4890.202202.026

基于耳石信息的北太平洋东西部群体柔鱼日龄和生长特征

韩霈武¹,王岩¹,方舟^1,2,3,4,5*,陈新军^1,2,3,4,5

（¹上海海洋大学海洋科学学院，上海 201306；²大洋渔业资源可持续开发教育部重点实验室，上海 201306；³国家远洋渔业工程技术研究中心，上海 201306； ⁴农业农村部大洋渔业开发重点实验室，上海 201306；⁵农业农村部大洋渔业资源环境科学观测实验站，上海 201306）

出版日期:2022-02-10 发布日期:2022-08-10

Age and growth of Ommastrephes bartramii in eastern and western cohorts in North Pacific based on statolith information.

HAN Pei-wu¹, WANG Yan¹, FANG Zhou^1,2,3,4,5*, CHEN Xin-jun^1,2,3,4,5

(¹College of Marine Sciences of Shanghai Ocean University, Shanghai 201306, China; ²Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China; ³National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China; ⁴Key Laboratory of Ocean Fisheries Exploitation, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China; ⁵Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China).

Online:2022-02-10 Published:2022-08-10

摘要/Abstract

摘要： 为了解北太平洋东部群体与西部群体柔鱼的日龄与生长特征，根据2010年、2012年、2015年和2016年在北太平洋采集的柔鱼样本，对该物种的日龄和生长特征进行了分析。结果表明：柔鱼生命周期大约为1年，东部群体柔鱼个体日龄范围为133～345 d，西部群体雌、雄个体的日龄范围分别为105～271 d和95～264 d；东部群体柔鱼的孵化高峰期为8—10月，西部群体雌性个体的孵化高峰期为1—4月，雄性的孵化高峰期为2—4月；胴长与体质量关系表明，东部群体柔鱼的生长参数b值（2.98）约等于3，表明其为等速增长，而西部群体雌性b值（3.17）和雄性b值（3.14）大于3，表明其为正异速生长；东部群体胴长与日龄关系符合Logistic关系，其中拐点日龄为177 d，拐点胴长为261.90 mm，西部群体雌、雄胴长与日龄关系均符合Gompertz关系，其中拐点日龄分别为76 d和74 d，拐点胴长分别为142.49 mm和137.48 mm；随着日龄的增加，东西部群体柔鱼的生长率呈下降趋势，且相对于西部群体，东部群体柔鱼的生长率较大，西部群体雌性的生长率略大于雄性个体。

关键词: 柔鱼, 生长拐点, 北太平洋, 耳石

Abstract: To understand the age and growth of neon flying squid (Ommastrephes bartramii) in the eastern and western cohorts, we analyzed their age and growth characteristics based on the samples collected in North PacificOcean in 2010, 2012, 2015 and 2016. The results showed that the life cycle of O. bartramii was approximately one year. The age of the eastern cohort ranged from 133 to 345 d, while the age of female and male in the western cohort ranged from 105-271 d and 95-264 d, respectively. The peak hatching date of the eastern cohort was distributed in August to October. In terms of western cohort, the peak hatching date of the female was distributed in January to April, and that of the male was distributed in February to April. The relationship between mantle length and body mass showed that the growth parameter b value (2.98) was closer to 3 for eastern cohort, indicating a constant growth rate of O. bartramii. The growth parameter b value (3.17 for female and 3.14 for male) were greater than 3 for western cohort, indicating a positive allometry. The relationship between mantle length and age of eastern cohort was in accordance with Logistic function, in which the inflection point of the age was 177 d and the inflection point of mantle length was 261.90 mm. The relationship between mantle length and age of western cohort was in accordance with Gompertz function, in which the inflection points of the age were 76 d for female and 74 d for male, and the inflection points of mantle length were 142.49 mm for female and 137.48 mm for male, respectively. With the increases of age, the growth rate of eastern and western cohorts showed a downward trend. The growth rate of eastern cohort was higher than that of the western cohort, while the growth rate of females in the western cohort was slightly higher than that of males.

Key words: Ommastrephes bartramii, growth inflection point, North Pacific Ocean, statolith.

韩霈武, 王岩, 方舟, 陈新军. 基于耳石信息的北太平洋东西部群体柔鱼日龄和生长特征[J]. 生态学杂志, 2022, 41(2): 393-403.

HAN Pei-wu, WANG Yan, FANG Zhou, CHEN Xin-jun. Age and growth of Ommastrephes bartramii in eastern and western cohorts in North Pacific based on statolith information.[J]. Chinese Journal of Ecology, 2022, 41(2): 393-403.

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基于耳石信息的北太平洋东西部群体柔鱼日龄和生长特征

Age and growth of Ommastrephes bartramii in eastern and western cohorts in North Pacific based on statolith information.

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