黄海中部近岸小黄鱼与蓝点马鲛鱼卵时空分布的初步研究  

A Preliminary Study of Spatial and Temporal Distribution of Scomberomorus niphonius and Larimichthys polyactis Eggs in the Central Yellow Sea

作　　者：刘文博[1] 刘鸿[1] 叶振江[1] 万荣[1] 任一平[1] 于洪亮 

机构地区：[1]中国海洋大学水产学院,山东青岛266003 [2]威海市文登区海洋与渔业局,山东威海264400

出　　处：《浙江海洋学院学报（自然科学版）》2015年第6期526-531,共6页Journal of Zhejiang Ocean University(Natural Science Edition)

基　　金：海洋公益性行业科研专项经费项目(201305030);高等学校博士学科点专项科研基金项目(20120132130001);中央高校基本科研业务费专项资金资助(201262004;201562030)

摘　　要：2013年4月下旬至7月上旬,采用浅水I型网水平拖网的调查方式对黄海中部20 m以浅海域(34°25′-35°35′N,119°15′-120°35′E)的鱼卵分布进行了6个航次的综合调查。本文主要分析了蓝点马鲛和小黄鱼(Larimichthys polyactis)鱼卵丰度的时空分布、动态及与物理环境因子的关系。结果表明,蓝点马鲛鱼卵自5月上旬航次出现,直至7月下旬,产卵盛期5月下旬至6月上旬,研究海域内鱼卵主要分布于偏北区域;小黄鱼鱼卵自5月上旬航次出现,直至6月上旬,5月上、下旬为其产卵盛期,主要分布于研究海域偏南。在P<0.05的显著水平上,两种鱼卵丰度均与表层温度负相关;蓝点马鲛鱼卵丰度与经度负相关,与纬度正相关;小黄鱼鱼卵丰度与经度正相关,与纬度负相关。其余各环境因子与两种鱼卵的丰度未表现出显著相关。研究结果初步揭示了黄海中部近岸海域蓝点马鲛和小黄鱼鱼卵的时空分布格局,为认识环境变动下该海区蓝点马鲛与小黄鱼种群数量动态和资源变化提供科学依据。In this study, a total of six fishery research cruises were conducted to investigate the community structure and ecology of Scomberomorus niphonius and Larimichthys polyactis eggs in the central Yellow Sea（34°25′-35°35′N,119°15′-120°35′E）, one of the traditional spawning grounds of fishery species along Chinese coastal waters, from late April to early July 2013. Zooplankton nets（mouth diameter 50 cm, 145 cm in length, mesh size 0.505 mm） were horizontally trawled about 10 minutes in waters less than the 20 m isobath line to collect the ichthyoplankton. This paper described the distribution of S. niphonius and L.polyactis eggs, and analyzed the relationship between egg abundance and the following variables： longitude,latitude, sea surface temperature（SST）, sea surface salinity（SST） and depth. S. niphonius eggs appeared from early May to early July, the main spawning period was late May and early June, and the S. niphonius eggs which were sampled in every cruise mainly distributed in the northern study area. L. polyactis eggs were sampled just in there cruises（early May, late May and early June）, the main spawning period was May, and eggs assembled in southern research area. Spearman＇s rank correlation analysis showed negatively correlated between fish eggs（S. niphonius and L. polyactis） abundance and the SST. The abundance of S. niphonius eggs was negatively correlated with the longitude, but was positively correlated with the latitude at a statistical significance level of 0.05. In contrast, the abundance of L. polyactis eggs was positively correlated with the longitude, but was negatively correlated with the latitude at same statistical significance level. But the remaining variables have shown no significant correlation with eggs abundance. The findings of this study revealed the spatial and temporal distribution patterns of S. niphonius and L. polyactis eggs in the central Yellow Sea, which could provide knowledge for better understanding the population dynamics of the s

关 键 词：黄海中部 蓝点马鲛 小黄鱼 鱼卵 时空分布 

分 类 号：S932.4[农业科学—渔业资源]