摘要
根据2013年5月(春季)、10月(秋季)在宁波-舟山港海域进行的渔业资源定点拖网调查所获得的数据,用渔获率作为鱼类资源数量分布的指标,对宁波-舟山港海域鱼类种类组成、数量时空分布、优势种等群落结构特征进行了分析。结果如下:(1)两次调查共获得鱼类36种,隶属于10目26科35属,其中,以鲈形目种类为最多,有10科17属17种,占鱼类总种数的47.3%。(2)通过分析鱼类数量的时空分布发现,时间上是秋季的平均每小时渔获量多于春季,空间上是分布在桃花岛、金塘岛及穿山半岛海域的每小时鱼类渔获量较多。(3)不同季节的优势种变化明显,春季优势种有龙头鱼、小黄鱼、六丝钝尾虾虎鱼等3种,而秋季优势种仅有龙头鱼1种,表明分布在该调查海域的鱼类以洄游性种类为主。
Based on the May（spring） and October（autumn） 2013 in Ningbo-Zhoushan harbor waters fishery resources fixed-point trawl survey data, we used the catch rate as indicators of the distribution of the num-ber of fish resources, and analyzed fish species composition, quantity, time and space distribution, dominant species, community structure characteristics in the survey area. The results are as follows：（1） 36 fish species were found, belonging to 35 genera, 26 families, 10 orders. With perciformes species, among them the most,there are 17 genera and 10 families 17 species, accounting for 47.3% of the fish species.（2） By analyzing the space-time distribution of fish populations, the average autumn catches per hour are more than spring in time,distribution of sea fish catches in Taohua island, Jintang island, and Chuanshan island is more per hour.（3）The advantages of different seasons change is obviously, dominant species in spring are Harpodon nehereus,Pseudosciaena polyactis, Amblychaeturichthys hexanema, and autumn of dominant species is only H. nehereus.Show that distribution in the survey sea area is given priority to with migratory species of fish.
出处
《浙江海洋学院学报（自然科学版）》
CAS
2016年第1期1-7,共7页
Journal of Zhejiang Ocean University(Natural Science Edition)
基金
国家自然科学基金项目(31270527)
企业委托项目(宁波-舟山港穿山港区中宅二期矿石码头工程附近海域渔业资源及渔业生产现状调查与分析)(2013-2014)
关键词
宁波-舟山港
春秋季
鱼类
种类组成
数量分布
Ningbo-Zhoushan harbor
spring and autumn
fishes
species composition
quantitative distribution
