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M. Deval, T. Bök, C. Ateş, H. Özbilgin (2006)
Selectivity of PE and PA material codends for rose shrimp (Parapenaus longirostris) in Turkish twin rigged beam trawl fisheryFisheries Research, 81
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TRAWL COD END MESH SELECTIVITY OF BRAIDED PE MATERIAL FOR PARAPENAEUS LONGIROSTRIS (LUCAS, 1846) (DECAPODA, PENAEIDAE) BY ZAFER TOSUNO ˘ GLU 1 ) , CELALETTIN AYDIN, OKAN OZAYDIN and SEMIH LEBLEBICI Ege University, Faculty of Fisheries, TR-35100 Bornova-Izmir, Turkey ABSTRACT In this study, cod end mesh selectivity of braided polyethylene for the deep-water rose shrimp, Parapenaeus longirostris was investigated in the Aegean Sea. Fishing trials were carried out on the commercial trawler, “Hapulo ˘ glu” between 9 and 12 December 2006. Data were collected by a diamond mesh cod end of the 1200 mesh trawl net commercially used. The mean mesh size of the cod end meshes (nominal 46 mm) was measured near to 50 mm by using a calliper rule. Selectivity data were collected by the covered cod end method and analysed by means of a logistic equation with the Maximum Likelihood method. The mean selectivity curves were estimated from the individual hauls that were fitted taking into account the variation between hauls. The 50% retention length and the selection range of combined (male + female) P. longirostris were estimated as 19.6 mm (carapace length) and 6.2 mm, respectively, and there was no significant difference between the L
Crustaceana – Brill
Published: Jan 1, 2007
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