fa پارامترهای رشد، مرگ و میر و مقدار صید در واحد تلاش (CPUE) سیاه ماهی (Capoeta capoeta) در دریاچه مخزنی حسنلو بهداشت و بيماريهاي آبزيان بهداشت بيماريها كاربردي Applicable <p style="margin-left:40.0pt;">The study was conducted to determine growth parameters, mortality, length frequency, age structure and catch per unit effort (CPUE) of <em>Capeota capeota </em>in Hassanloo reservoir in western Azerbaijan. Fish sampling was done seasonally in 2004-2005 by gill net with mesh sizes 20, 30, 40, 50, 60mm.</p> <p style="margin-left:40.2pt;">The results showed age compositions of the fish were 1-5 years old. Average length and weight were estimated at 31.81&plusmn;0.54cm and 601.30&plusmn;20.49g, respectively. The range of total length and weight were 19-48cm and 120-1550g. The growth parameters were L&quot;=53.086cm, to= -0.2898, K= 0.4120. Total mortality (Z), natural mortality (M) and fishing mortality (F) were 0.76, 0.58 and 0.18 per year, respectively. Growth in length and weight of <em>Capoeta capoeta </em>population in Hassanloo reservoir compared better than the same age fish in other ecosystems of the region. Average CPUE for 1OOm gill nets in 24 hours was estimated at 11.81kg.</p> Gill net, Length frequency, Age structure 17 26 http://isfj.ir/browse.php?a_code=A-10-1417-56&slc_lang=fa&sid=1 A.A Khanipour علی اصغر خانی پور AAKhanipour@yahoo.com 100319475328460016392 100319475328460016392 Yes M Karimpour محمد کریم پور 100319475328460016393 100319475328460016393 No