A review on fishing gear in China: Selectivity and application  

作　　者：Zhongqiu Wang Hao Tang Liuxiong Xu Jian Zhang 

机构地区：[1]East China Sea Fisheries Research Institute,Chinese Academy of Fishery Academy,Shanghai,200090,China [2]College of Marine Sciences,Shanghai Ocean University,Shanghai,201306,China [3]National Engineering Research Center for Oceanic Fisheries,Shanghai,201306,China [4]Key Laboratory of Oceanic Fisheries Exploration,Ministry of Agriculture and Rural Affairs,Shanghai,201306,China [5]The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Shanghai Ocean University,Ministry of Education,Shanghai,201306,China [6]Center for Polar Research,Shanghai Ocean University,Shanghai,201306,China

出　　处：《Aquaculture and Fisheries》2022年第4期345-358,共14页渔业学报（英文）

基　　金：This study was financially supported by the National Natural Science Foundation of China(Grand No.31902426);the Shanghai Sailing Program(19YF1419800);the Special project for the exploitation and utilization of Antarctic biological resources of the Ministry of Agriculture and Rural Affairs.

摘　　要：In the 1980s,China’s offshore marine fishery resources declined,thus fishing gear selectivity gradually became a focus of scientific fishery research.Studies of fishing gear selectivity mainly focus on five kinds of fishing gear:trawls,shrimp beam trawls,stow nets,gillnets,and pots.Cover net method is the main method used in the comparative study of codend selectivity of both trawls and stow nets.These results showed that(1)Bottom trawls,targeting Larimichthys polyactis(the Little yellow croaker)and Trichiurus haumela(the Hairtail),should have a minimum mesh size of the codend no less than 60 mm in the Yellow and East China Seas.While the codend should use a square mesh with a minimum mesh size of 40 mm due to the variety of targeted species in the South China Sea.(2)Pair pelagic trawls,targeting pelagic species such as Engraulis japonicus(the Japanese anchovy),Pampus argenteus(the Silvery pomfret),Scomberomorus niphonius(the Spanish mackerel),as well as bottom species such as L.polyactis and T.haumela,should have a minimum mesh size of the codend no less than 56 mm in the Yellow Sea.(3)Shrimp beam trawls should use shrimp/fish separator devices(e.g.,separator panels,vertical separator panels,and sorting grids)to improve intra-species selectivity and reduce by-catch of non-target fish.(4)Canvas stow nets,targeting L.polyactis and T.haumela,should have a minimum mesh size of the codend no less than 55 mm.(5)Gillnets,the minimum mesh size should be determined for catching traditional economic species,but also the optimal mesh size for newly developed species.Such as,gillnets with mesh size of 35-38.71 mm targeting Harpodon nehereus(the Bombay duck),55 mm targeting L.polyactis and Nemipterus virgatus(the Golden threadfin bream),72 mm targeting Dentex tumifrons(the yellow sea breams)or Scomberomorus commersoni with body length of 280 mm,100 mm targeting P.argenteus,104 mm or 146 mm targeting 2-3 year or 6-7 year S.niphonius,120 mm targeting S.commersoni with body length of 380 mm,and 144 mm targeting Pampus chinens

关 键 词：TRAWL Mesh size Shrimp/fish separator Stow net GILLNET 

分 类 号：S972[农业科学—捕捞与储运]