东海北部、黄海南部黄鮟鱇的年龄和生长

Age and Growth of Lophius litulon in north of the East China Sea and south of the Yellow Sea

中文关键词: 黄鮟鱇  年龄  生长  东海北部  黄海南部

英文关键词: Lophius litulon  age  growth  north of the East China Sea  south of the Yellow Sea

中文摘要:

      利用黄鮟鱇(Lophius litulon)耳石对2007年3月至2009年5月取自东海北部、黄海南部黄鮟鱇的年龄和生长特征进行分析。结果显示：黄鮟鱇群体由1-5龄组成，以1-2 龄鱼为主，捕捞群体呈低龄化；生长特点属均匀生长型，体重与体长关系为W=1.55897×10-5L3.10865 , 体长与耳石半径关系为L=244.11R-210.6, 体长生长方程为Lt =749.9[1–e-0.349( t + 0.256)]，体重生长方程为Wt =13496.4[1–e–0.349(t + 0.256)] 3.10865，极限年龄Tmax=8.337龄，生长拐点年龄为ti=2.994龄，此时对应的体长和体重分别为508.8 mm 和4038.7 g。为保护黄鮟鱇资源，应限捕体长在500 mm以下的个体。

英文摘要:

      sing the otoliths, the age and growth characteristics of Lophius.litulon in north of the East China Sea and south of the Yellow Sea were primarily studied from march, 2007 to may, 2009. The results showed that the age group of L.litulon was from 1 to 5 a, and they were mainly composed by young fishes which ranged f rom 1 to 2 years old. The relationship between body length( L ) and weight( W) was W=1.55897×10-5L3.10865; the relationship between the radius of otolith and body length was L=244.1R-210.6; the growth pattern can be described by von Bertalanffy equation as Lt = 749.9 [ 1 – e -0.349 ( t + 0.256 ) ], Wt = 13496.4 [ 1 - e – 0.349 ( t + 0.256) ] 3.10865. The max age was 8.377 a, and the age of growth turning point was 2.99 a, and the corresponding body length and body weight were 508.8mm and 4038.7 g respectively. For the purpose of resource conservation, fishing of L.litulon should be limited to the individuals with body length of 500 mm below.