The Analysis On The Current Situation Of The Main Fishery Resources In The Coastal Waters Of Shandong During 2015-2016

According to the 2015 and 2016 monthly(except for Shandong coastal fishing moratorium)around the 10-16 representatives in the fishing season of the main pier ashore catches biological investigation of Thrissa kammalens,Scomberomorus niphonius,Scomber japonicas,Pseudosciaena polyactis,Pampus argenteus,Konosirus punctatus,Lateolabrax japonicus,Conger myriaster,Oratosquilla oratoria,Trachypenaeus curvirostris and Portunus trituberculatus body length(fork length/total length/carapace width),body weight and body length(fork length/total length/carapace width)-weight,age,VB growth equations were discussed primarily.The main results are as follows:1.Thrissa kammalens in 2015 spring and autumn the average fork length of 79.60 mm,the average weight of 6.73 g,with 0 and 1 years old,the relationship between fork length and weight was W=2.63×10-5L2.8836,average feeding level 1.41;in the autumn of 2016 the average fork length of 57.03 mm,the average weight of 1.98 g,composed of 2 year old fish,the relationship between fork length and weight was W=5×10-5L2.6210.The growth equation was Lt=15.7 ×(1-e-0.8(t+0.2)),wt = 33.2 ×(1-e-0.8(t+0.2))2.9675.2.Scomberomorus niphonius in 2015 the average fork length of 444.24 mm,the average weight of 874.13 g,with 1 and 2 individuals of age,the relationship between fork length and weight was W=0.0061L1 9382;in 2016 the average fork length of 373.51 mm,the average weight of 924.32 g,with 0 and 1 years old individuals,the relationship between fork length and weight was W=0.0061L1.9382.The growth equation was Lt=76.2×(1-e-0.52(t+0.1)),wt = 4217 ×(1-e-0.52(t+0.1))2.2672.3.Scomber japonicas in 2015 the average fork length of 291.08 mm,the average weight was 233.97 g,with 1 individuals of age,the relationship between fork length and weight was W=1×10-6L3.4539;in 2016 the average weight of 179.81 g,the average fork length of 245.87 mm,with 0 and 1 years old,the relationship between length and weight was W=2×10-4L2.5050.The growth equation was Lt = 41.02 ×(1-e-0.22(t-0.12)),wt = 1192 ×(1-e-0.22(t-0.12))3.0218.4.Pseudosciaena polyactis in 2015 the average body length of 174.02 mm,the average weight of 56.32 g,1 individuals of age in spring,autumn in 1 and 2 years old individuals,the relationship between body length and weight was W=2×10-5L2.8596;in 2016 the average body length of 169.30 mm,the average weight of 55.21 g,with 1 individuals of age,the relationship between body length and weight was W=0.0219L1.5157.The growth equation was Lt=26.2×(1-e-0.72(t+0.17)),wt = 212.4 ×(1-e-0.72(t+0.17))2.7391.5.Pampus argenteus in 2015 the average fork length of 158.64 mm,the average weight of 135.53 g,with 0 and 1 years old individuals,the relationship between fork length and weight was W=6×10-5L2.8572;in 2016 the average fork length of 179.92 mm,the average weight of 145.65 g;the average age of 0.5 years old,the relationship between fork length and weight was W=0.0345L1.5920;The growth equation was Lt= 34.12 ×(1-e-0.564(t+022)),wt = 558.45 ×(1-e-0.564(t+0.22))2.9011.6.Konosirus punctatus in 2015 the average fork length of 170.83 mm,the average weight of 72.75 g,with 1 individuals of age,the relationship between fork length and weight was W=1.01×10-5L3.0204;in 2016 the average fork length of 177.17 mm,the average weight of 76.78 g,the relationship between fork length and weight was W=3.00×10-5L2.8436.The growth equation was Lt=370.4 ×(1-e-0.65(t+0.2)),wt = 198.45 ×(1-e-0.65(t+0.2))3.012.7.Lateolabrax japonicus in 2015 the average fork length of 384.60 mm,the average weight of 725.75 g,with 1 individuals of age,the relationship between fork length and weight was W=9.0×10-5L2.6218;in 2016 the average fork length of 264.14 mm,the average weight of 185.29 g,the relationship between fork length and weight was W=4.5×10-2L1.4748.The growth equation was Lt= 69.7×(1-e-0.42(t+0.22)),wt = 4911.7×(1-e-0.42(t+0.22))2.7692.8.Conger myriaster had an average length of 420.98 mm in 2015,with an average body weight of 158.23 g.It was mainly composed of 0 age and 1 age individuals,the relationship between fork length and weight was W=2.00×10-6L3.02006.In 2016,the average body length 373.9 mm,the average body weight 160.98 g,the total length and weight was W=5×10-5L2.4825.The growth equation was Lt = 92.8 ×(1-e-0.60(t+0.49)),wt =1600 ×(1-e-0.60(t+0.49))2.8078.9.Crabs mainly selected offshore Shandong representative of Oratosquilla oratoria?Trachypenaeus curvirostris and Portunus trituberculatus,the determination of basic biology.10.The results of the survey catches in the 0 and 1 years old,the elderly rarely catch,resources in autumn than other seasons is better,in the long-term fishing pressure,Shandong fishery resources has been over exploited,catches are low value and miniaturization and sexual precocity evolution.