长江口鮻矢耳石形态特征及质量与年龄的关系

doi:10.13287/j.1001-9332.201803.040

应用生态学报 ›› 2018, Vol. 29 ›› Issue (3): 953-960.doi: 10.13287/j.1001-9332.201803.040

长江口鮻矢耳石形态特征及质量与年龄的关系

纪严^1,2, 赵峰^1,2*, 杨琴^1,2, 马荣荣^1,2, 杨刚¹, 张涛¹, 庄平¹

¹中国水产科学研究院东海水产研究所, 农业部东海与长江口渔业资源环境科学观测实验站, 上海 200090;
²上海海洋大学水产与生命学院, 上海 201306

收稿日期:2017-07-19 出版日期:2018-03-18 发布日期:2018-03-18
通讯作者: * E-mail: zhaof@ecsf.ac.cn
作者简介:纪严,男,1993年生,硕士研究生. 主要从事长江口鱼类发育及生长环境的研究. E-mail: yzzjy12040715@outlook.com
基金资助:
本文由农业部财政专项(CJDC-2017-23)和香港海洋公园保育基金项目(FH04.1718)资助

Sagittal otolith morphology and the relationship between its mass and the age of Liza haematocheila in the Yangtze Estuary, China.

JI Yan^1,2, ZHAO Feng^1,2^*, YANG Qin^1,2, MA Rong-rong^1,2, YANG Gang¹, ZHANG Tao¹, ZHUANG Ping¹

¹Ministry of Agriculture Scientific Observing and Experimental Station of Fishery Resources and Environment of the East China Sea and Yangtze Estuary; East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;
²College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China

Received:2017-07-19 Online:2018-03-18 Published:2018-03-18
Contact: * E-mail: zhaof@ecsf.ac.cn
Supported by:
This work was supported by the Specific Financial Fund of Ministry of Agriculture, China (CJDC-2017-23) and Ocean Park ConservationFoundation, Hong Kong, China (FH04.1718)

摘要/Abstract

摘要： 为研究长江口鮻矢耳石形态特征及其质量与年龄的关系,2017年2—6月从长江口水域采集鮻358 尾,解剖并提取耳石324对,并对其形态学参数进行测量分析.结果表明: 鮻矢耳石具有基叶和翼叶,中央听沟明显,矢耳石的大小和形状随个体生长变化明显,矢耳石由边缘规则的圆润瓜子状渐变为褊窄的叶片状,边缘波浪状突起逐渐变多.矢耳石平均密度为1.52 mg·mm^-2,平均矩形趋近率为0.68,耳石长占其体长的0.021%～0.047%,耳石宽占其体长的0.009%～0.021%,耳石质量占其体质量的0.045‰～0.731‰.鮻矢耳石长(OL)、宽(OW)、质量(OM) 均与体长呈显著相关,耳石宽与耳石质量函数关系式的决定系数(R²)最高(0.928).耳石质量与体长(BL)最佳拟合方程为幂函数:OM=0.0009BL^1.8737(R²=0.967);耳石质量与年龄(A)以及体长与年龄的最佳拟合方程为多项式:OM=2.9262A²+4.8437A+2.1894 (R²=0.847);BL=-3.2248A²+102.54A+38.373(R²=0.858),矢耳石质量与年龄呈显著线性相关,用耳石质量与年龄关系估算的年龄与从耳石上直接读取的年龄无显著差异,矢耳石质量可以作为鉴定鮻年龄的有效辅助手段.

Abstract: To examine the relationship of morphological characters of sagittal otolith and the age of Liza haematocheila in the Yangtze Estuary, we analyzed the morphological parameters of 324 pairs of otoliths extracted from 358 L. haematocheila specimens from the Yangtze Estuary in February to June of 2017. The results showed that sagittal otolith had rostrum, antirostrum and obvious central notch. The size and shape of sagittal otolith significantly changed with their growth, from regular melon seeds shape outline to long narrow leaf shape and increasing irregular wavy outline. The average density of sagittal otolith was 1.52 mg·mm^-2. The average rectangularity was 0.68. The length of sagittal otolith was 0.021%-0.047% of entire body length (BL), the width was 0.009%-0.021% of entire BL, and the mass was 0.045‰-0.731‰ of the entire body mass (BM). Otolith length (OL), otolith width (OW) and otolith mass (OM) were all significantly related to the BL, with the determination coefficient for OW and OM model being the highest (R²=0.928). The relationship between OM and BL was described best by exponential regression: OM=0.0009BL^1.8737(R²=0.967). The relationships between OM and age (A), BL and A were well fitted by multinomial regressions, respectively: OM=2.9262A²+4.8437A+2.1894 (R²=0.847), BL=-3.2248A²+102.54A+38.373 (R²=0.858). In addition, OM was linearly correlated with A. The estimated otolith’s ages from the model did not significantly variate from the real ages counting from annulus counts. Therefore, OM could be an effective parameter for the age estimation of L. haematocheila.

纪严, 赵峰, 杨琴, 马荣荣, 杨刚, 张涛, 庄平. 长江口鮻矢耳石形态特征及质量与年龄的关系[J]. 应用生态学报, 2018, 29(3): 953-960.

JI Yan, ZHAO Feng, YANG Qin, MA Rong-rong, YANG Gang, ZHANG Tao, ZHUANG Ping. Sagittal otolith morphology and the relationship between its mass and the age of Liza haematocheila in the Yangtze Estuary, China.[J]. Chinese Journal of Applied Ecology, 2018, 29(3): 953-960.

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长江口鮻矢耳石形态特征及质量与年龄的关系

Sagittal otolith morphology and the relationship between its mass and the age of Liza haematocheila in the Yangtze Estuary, China.

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