fa یافته علمی کوتاه: ماهیان غیر تجاری در ترکیب صید ضمنی ترال میگو در خوریات ماهشهر تكنولوژي صيد تكنولوژي صيد پژوهشي Research <p style="margin-left:42.85pt;">Non-commercial fish species of shrimp trawls were studied monthly from October 2005 to September 2006 in Mahshahr creeks (Darvish, Doragh, Bihad, Ghazaleh, Ghanam, Zangi and Patil). The trawl nets had a cod-end mesh size of 24mm. Total catch was 6431 individuals weighing 55.5kg, and included 14 species of non-commercial fish species belonging to 14 families. The caught shrimp species were from Penaeidae; comprising only 30% of the total catches (4506 individuals weighting 44kg). Dominant species were <em>Lieognathus hindus</em> (54.8%), <em>Metapenaeus affinis </em>(18.2%) and <em>Parapenaeopsis stylifera </em>(9.8%). Maximum fish abundance was observed in March 2005 (98/3%) and for shrimp in June (66.2%). Bihad creek had the maximum&nbsp; percentage of fish (91.8%) by-catch and shrimp (42.9%) abundance. We conclude that the by-catch percentage of non-commercial fish is higher than shrimps in the study areas. Warm months witnessed the highest abundance of shrimp while January-March was the time period when by-catch was most abundant.</p> Fishing, By-catch, Trawl, Mahshahr 149 153 http://isfj.ir/browse.php?a_code=A-10-1417-85&slc_lang=fa&sid=1 S Nikoo سارا نیکو sa.nikoo83@yahoo.com 100319475328460016379 100319475328460016379 Yes A Savari احمد سواری 100319475328460016380 100319475328460016380 No P Cochnian پریتا کوچنین 100319475328460016381 100319475328460016381 No S Dehghan Medise سمین دهقان مدیسه 100319475328460016382 100319475328460016382 No S Saki سمیه ساکی 100319475328460016383 100319475328460016383 No