TRAWL COD END MESH SELECTIVITY OF BRAIDED PE MATERIAL FOR PARAPENAEUS LONGIROSTRIS (LUCAS, 1846) (DECAPODA, PENAEIDAE)

摘要: [In this study, cod end mesh selectivity of braided polyethylene for the deep-water rose shrimp, Parapenaeus longirostris was investigated in Aegean Sea. Fishing trials were carried out on commercial trawler, "Hapuloglu" between 9 and 12 December 2006. Data collected by a diamond 1200 trawl net commercially used. The mean size meshes (nominal 46 mm) measured near to 50 mm using calliper rule. Selectivity data covered method analysed means logistic equation with Maximum Likelihood method. curves estimated from individual hauls that fitted taking into account variation hauls. 50% retention length selection range combined (male + female) P. as 19.6 (carapace length) 6.2 mm, respectively, there no significant difference L50 values male female sexes (p < 0.05). Consequently, showed relatively better considering at sexual maturity species, effect increased material used are great importance enhancing reducing amount undersized caught fishery., In fishery.]