تالاب بوجاق كياشهر- زيباكنار ESOX LUCIUS بررسي رژيم غذايي اردك ماهي

The diet survey Zibakenar-Kiashar Bojagh lagoon pike (Esox Lucius)

The diet survay of zibakenar-Kiashar boujagh lagoon Esox Lucius was carried out in four seasons of 1381. Aftar catch of pikes, they were transferred to laboratory and after biometery and age determination, gastro intestinal tract was bring out and ate foods were recognized. In Catched Esox Lucius, average total length was 33cm (minimum 17.7cm and maximum 74cm), average weight was 307.3 gr (minimum 38 gr and maximum 1100 gr), average relative length gut was 0.8 (0.05<0.58), average Index of fullness of 171.6 (0.2-1189.1), average fulltons condition factor of 780.5 (74-7835.2). Obtained results from 122 Esox Lucius express that this fish fed from13 kinds of live foods. In these foods, the highest frequency percentage was related to Odonata (14%), Syngnatus abster (I3.8%) and Neogobius kessleri gorlap (13.4%) and lowest frequency percentage was related to Esox Lucius and Gambusia holbrooki (each with 4.3%). Esox Lucius were in the age groups of 0-9 (Esox lucius wasnot catch from 7+ and 8+ age groups). According to statitical studies, there were differences between age, season and sex groups in order to diversity and fed frequency. According to obtained results we can say that bojaqh Esox Lucius is a carnivores, piscivores and even canniblastic.