TY  - JOUR
T1  - Selectivity of Diamond and Square Mesh Beam Trawl Codends for European Hake and Striped Red Mullet in the Sea of Marmara, Turkey
AU - Uluturk, Tuncer AU - Gokturk, Didem AU - Kahraman, Abdullah Ekrem AU - Alicli, Tugrul Zahit AU - Ates, Celal AU - Bok, Tomris 
JO  - Journal of Animal and Veterinary Advances
VL  - 9
IS  - 2
SP  - 436
EP  - 440
PY  - 2010
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2010.436.440
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2010.436.440
KW  - Sea of Marmara
KW  -striped red mullet
KW  -European hake
KW  -square mesh
KW  -diamond mesh
KW  -Beam trawl
AB  - This study compares the selectivity of 40 mm diamond and square mesh polyethyelene codends for size selectivity of two by-catch species, the European hake <I>Merluccius merlucius</I> and the striped red mullet <I>Mullus surmuletus</I> commonly captured in the beam trawl fishery in the Sea of Marmara. Data were collected using a conventional rigged twin beam trawl between 26 March and 20 April 2007. Covered codend method was used to obtain the selectivity data which analyzed by means of a logistic equation with the maximum likelihood method. The pooled length at 50% retention, L<SUB>50</SUB> was found to increase with squre mesh shape for both species. L<SUB>50</SUB> values of 40 mm diamond and square mesh codends were 9.8 and 13.2 cm for striped red mullet, respectively. 40 mm diamond mesh codend is not appropriate for the Minimum Landing Size (MLS) of 11 cm for the striped red mullet. Both the diamond and square mesh codends also retain a significant amount of undersized hake compared to the MLS of 25 cm. Only 40 mm square mesh codend provides satisfactory selection for striped red mullet in the rigged beam trawl fishery of the Sea of Marmara.
ER  -