海州湾海洋牧场区两种石首鱼科鱼类耳石形态特征与生长特性  

Morphology and growth characteristics of otoliths of two species ofSciaenidae in the marine ranching area of Haizhou Bay

作　　者：张硕[1,2] 张潇 高世科 孙文 ZHANG Shuo;ZHANG Xiao;GAO Shike;SUN Wen(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306

出　　处：《生物学杂志》2023年第4期62-69,共8页Journal of Biology

基　　金：海州湾国家级海洋牧场示范项目(LYGD20170921025);上海市科委地方院校能力建设项目(21010502200)。

摘　　要：研究棘头梅童鱼(Collichthy lucidus)和小黄鱼(Larimichthys polyactis)耳石的形态特征及主要参数,选用左矢耳石为研究对象,分别采用直线、对数、幂函数和指数函数拟合矢耳石各参数与鱼体生长关系式。结果表明,两种鱼类矢耳石的长、短直径均随体长、体重的增大而增大,而长直径与短直径的比值变化不大。棘头梅童鱼矢耳石的长、短直径与体长之间,以及长、短直径与体重之间均呈显著的幂函数相关关系(P<0.05);小黄鱼矢耳石的长、短直径与体长、体重之间均呈显著的线性函数相关关系(P<0.05)。两种鱼类的矢耳石的生长特性区别明显。棘头梅童鱼矢耳石短直径与长直径比值稳定于0.75,而小黄鱼则稳定于0.6。棘头梅童鱼矢耳石的长短直径与耳石重之间呈显著的幂函数相关关系(P<0.05),而小黄鱼的则呈线性函数相关。随机森林结果显示,两种鱼类的耳石形态参数对体长、体重的贡献率差异不大(P>0.05)。The morphological parameters,growth characteristics of otoliths of Collichthys lucidus and Larimichthys polyactis and their relationship with fish growth were studied.The left sagittal otolith was selected as the research object,and the growth relation of each parameter of sagittal otolith was fitted by linear,logarithmic,power and exponential functions.The results showed the long and short diameters of the sagittal otoliths of two species increased with the increase of body length and weight,but the ratio of the long diameter to the short diameter was basically stable.There were significant power function correlations not only between the long and short diameters of sagittal otoliths and body length of C.lucidus,but also between the long and short diameters and body weight.There was a significant linear correlation between the long diameter and short diameter of sagittal otolith of small yellow croaker and body length and weight.For the growth characteristics of sagittal otolith,there were obvious differences between the two kinds of fish.The ratio of short diameter to long diameter of sagittal otolith of C.lucidus was stable at 0.75,while that of L.polyactis was 0.6.There was a significant power function correlation between the length and diameter of the sagittal otolith and the otolith weight of C.lucidus,while that of L.polyactis was a linear function correlation.The random forest results showed that the contribution rates of otolith morphological parameters to body length and weight of the two species were different,but the difference was not significant.

关 键 词：棘头梅童 小黄鱼 耳石形态 随机森林 海州湾 

分 类 号：Q959.4[生物学—动物学] S917.4[农业科学—水产科学]