Marine and Life Sciences

Yazarlar: Süleyman ÖZDEMİR, Yakup ERDEM

Konular:Balıkçılık

Anahtar Kelimeler:Trammel net,By-catch species,Fish distribution,Black Sea

Özet: In  this  study,  the  distribution  on  the  nets  of  by-catch  fish  species  caught  by  the trammel nets was determined between 01 January 2002 and 31 December 2002  in  the  Sinop  province  shores  of  Black  Sea.  Nets  have  multifilament  (Fml)  and monofilament (Fmn) material with inner mesh size of 36 mm and outer mesh size of 200 mm, were used in the study. The number (7 meshes) of the outer at the height of the net for vertical position of fish was considered. Buoyancy rope of  equipped  net  was  divided  10  equal  parts  for  horizontal  position.  A  total  of  286 by-catch fish (Scorpeana porcus, Gaidropsarus mediterraneus, Solea spp., Gobius spp. and Labrus spp., species) were caught in the study. Fml and Fmn were  captured  188  and  98  specimens,  respectively.  For  both  nets,  the  fishes  showed  capture  distribution  in  the  bottom  parts  (1  and  2  no  outer  net)  76.1%  and 77.6% respectively.  Fishes with demersal characteristics lower were caught in the middle (3, 4 and 5 no outer net) and upper parts (6 and 7 no outer net) of the  nets.  It  is  thought  that  the  results  may  contribute  to  the  modification  and  improvement  studies  in  the  reduction  of  none  target  species  in  and  achieving  species selectivity in the trammel net fisheries.

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