首页|期刊导航|中国海洋湖沼学报（英文版）|Population parameters and dynamic pool models of commercial fishes in the Beibu Gulf, northern South China Sea
中国海洋湖沼学报（英文版）2012，Vol.30Issue(1)：105-117,13.DOI:10.1007/s00343-012-1017-y
Population parameters and dynamic pool models of commercial fishes in the Beibu Gulf, northern South China Sea
Population parameters and dynamic pool models of commercial fishes in the Beibu Gulf, northern South China Sea
摘要
Abstract
Length-frequency data of eight commercial fish species in the Beibu Gulf (Golf of Tonkin),northern South China Sea,were collected during 2006-2007.Length-weight relationships and growth and mortality parameters were analyzed using FiSAT Ⅱ software.Five species had isometric growth,two species had negative allometric growth,and one species had positive allometric growth.Overall,the exploitation rates of the eight species were lower in 2006-2007 than in 1997-1999:for four species (Saurida tumbil,Saurida undosquamis,Argyrosomus macrocephalus,and Nemipterus virgatus) it was lower in 2006-2007 than in 1997-1999,for two species (Parargyrops edita and Trichiurus haumela) it remained the same,and for the other two species (Trachurus japonicus and Decapterus maruadsi) it was higher in 2006-2007 than in 1997-1999.The exploitation rates might have declined because of the decline in fishing intensity caused by high crude oil prices.The optimum exploitation rate,estimated using Beverton-Holt dynamic pool models,indicated that although fishes in the Beibu Gulf could sustain high exploitation rates,the under-size fishes at first capture resulted in low yields.To increase the yield per recruitment,it is more effective to increase the size at first capture than to control fishing effort.关键词
commercial fish/population parameters/dynamic pool model/stock status/Beibu Gulf/northern South China SeaKey words
commercial fish/population parameters/dynamic pool model/stock status/Beibu Gulf/northern South China Sea引用本文复制引用
WANG Xuehui,QIU Yongsong,DU Feiyan,LIN Zhaojin,SUN Dianrong,HUANG Shuolin..Population parameters and dynamic pool models of commercial fishes in the Beibu Gulf, northern South China Sea[J].中国海洋湖沼学报（英文版）,2012,30(1):105-117,13.基金项目
Supported by the Chinese Ministry of Agriculture under the Investigation of Fishery Stocks in China Seas Program (No.070404),and the Special Project of the Social Commonwealth Research National Institute (Nos.2009TS08,2010YD10) （No.070404）
