文章摘要
叶昌臣,唐启昇,秦裕江.黄海鲱鱼和黄海鲱鱼渔业[J].水产学报,1980,4(4):339~352
黄海鲱鱼和黄海鲱鱼渔业
THE HUANG HAI HERRING AND THEIR FISHERIES
  
DOI:
中文关键词: 
英文关键词: 
基金项目:
作者单位
叶昌臣 辽宁省海洋水产研究所 
唐启昇 黄海水产研究所 
秦裕江 辽宁省海洋水产研究所 
摘要点击次数: 1313
全文下载次数: 911
中文摘要:
      在本文中讨论了黄海鲱鱼的种群、移动、生长和死亡、数量变动和渔业预报渔业管理等问题。认为终年生活在黄海北纬34°以北海域的黄海鲱鱼是太平洋鲱鱼的一个族(种群)。黄海鲱鱼的生长特征可用von Bertalanffy生长方程描述。用Delury讨论过的方法和渔捞死亡率估算两种方法概算了1970世代在1972年1月初的资源量。两种方法的计算结果差5%,平均值为2082×10~6尾。在70年代,种群数量最多的是1972年,最少的是1977年,两者约差10倍。黄海鲱鱼数量的这种剧烈变动,是自然现象,不是过度捕捞。此外还研究了黄海鲱鱼渔业的最适网目尺寸和相应的渔捞死亡,提出了对黄海鲱鱼渔业的管理措施。
英文摘要:
      This article discusses the race, migration, growth pattern, mortality and dynamicsof the herring (Clupea harengus pellasi Valenciennes) inhabiting in Huang Hai, andattempts to make prediction and management on fisheries. The results are summarizedas follows: 1. IIerring inhabiting in areas north to the latitude of 34°in Huang Hai all the year round it is believed to be a race of the Pacific herring. Hence they are traditionallycalled the Huang Hai herring. 2. The growth pattern of Huang Hai herring can be described by von Bortalanffyequation, and as of year 1972 the value of parameters for the equation is IV = 314g.,L = 308mm, and K = 0. 58. The maximum growth rate appears at t = 1.3 years. FromFebruary 1972 to March 1973, the total Instantaneous mortality estimated by data forthe catch per effort was 1.05 which consists of the fishing mortality 0. 939 and thenatural mortality 0. 111. 3. The numbers of the 1970 year-class in early January were estimated with twoprocesses, Delury's method and the method of estimation of fishing mortality. The dif-ference in valuo of the calculation between the two methods is about 5%. the averagevalue is 2082×106 individuals, it coincides with actual catches as shown in the table 6. 4. In the 1970s, the fluctuation in the numbers of the population happened to be maximum in the year of 1972 and minimum in 1977. The former were ten times greaterthan the latter. These drastic dynamics were considered to be a natural phenomenon rather than the result of over-fishing. The statistical analysis shows the interdependencebetween actual catches and the abundance index obtained from fish--searching in October. The relative coefficient was 0. 9710. 811 (P0. 05), which accounts for thefact that catches can be predicted by abundance.index. 5. After making a careful study of the optimal fishing mortality and mesh--sizefor the fisheries, and considering the economical value of the herring eggs, we workedout a strategy on the management of the fisheries for Huang Hai herring. Since thevalue(including the yield, average body length and weight as well as the age of the 1970year-clase) obtained by Boverton-Holt model and S--E model are similar to the resultssampled from fishcries, it is suggested that the conclusion here submitted in the papermay be valid.
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看