摘要
为了解荆江航道整治工程中透水框架的集鱼效果,分别于2014年5-6月和2015年5-6月,采用科学探鱼仪SIMRAD EY60和双频识别声纳(DIDSON)ARIS EXPORER 1800两种水声学设备,分别对荆江瓦口子水道的金城洲和太平口水道的腊林洲透水框架水域的鱼类分布情况进行了水声学监测,并对工程江段的鱼类进行了刺网调查。结果显示:采用刺网捕获鱼类17种共204尾,其中数量和重量最多的都是鳊鱼,分别占64.71%和39.62%。渔获物体长范围是10~80 cm,平均体长是(26.90±8.82)cm;EY60监测到腊林洲工程区鱼的数目是金城洲工程区的1.92倍,DIDSON监测腊林洲工程区鱼的数目是金城洲工程区的2.36倍;EY60监测到金城洲鱼类体长集中在5~10 cm,占55.24%,腊林洲鱼类体长集中在30~50 cm,占45.38%。结果表明,透水框架群对于鱼类具有一定的诱集效果。
In order to realize the fish - aggregation effects of penetrating frame groups in Jingjiang channel regulation pro-ject, investigations were conducted from May to June, 2014 in Jinchengzhou and from May to June, 2015 in Lalinzhou. During investigations, net catching and hydro - acoustic monitoring methods were adopted. The results show that the quantity and weight of the fish caught were 204 individuals with a total weight of 94. 58 kg, among which the quantity and weight of Parabramis pekinensis accounted for 64. 71% and 39. 62% , respectively. The average length of the caught fish was 26. 90 ± 8. 82 cm,the longest was 80 cm and the shortest was 10 cm. The result of Hydro - acoustic investigations showed that the quantity of fish in Lalinzhou is 1. 92 and 2. 36 times to that in Jinchengzhou investigated by EY60 and DID- SON, respectively. The body length of fish monitored by EY60 in Jinchengzhou concentrated in the range from 5 to 10 cm, accounted for 55. 24% , and that in Lalinzhou concentrated in the range from 30 -50 cm, accounting for 45. 38%. In gen-eral ,the tetrahedron - like penetrating frame groups have a certain fish - aggregation effect.
出处
《淡水渔业》
CSCD
北大核心
2017年第4期97-104,共8页
Freshwater Fisheries
基金
中国水产科学研究院基本科研业务费专项课题(2017HY-ZD0101)
长江航道规划设计研究院项目"长江中下游水下航道整治工程区生境恢复过程研究"
国家自然科学基金"长江中游四大家鱼产卵场定位及特征研究"(51249004)
农业部物种资源保护项目"长江中上游重要渔业水域主要经济物种产卵场及洄游通道调查"
关键词
荆江航道整治工程
透水框架
渔获物
水声学
诱集效果
Jingjiang channel regulation project
penetrating frame
fish catch
hydroacoustic
fish - aggregation effect
