Age and growth of Nemipterus randalli in the southern Aegean Sea, Turkey

Umut Uyan, Halit Filiz, Ali Serhan Tarkan, Murat Çelik, Nildeniz Top

Department of Marine Biology, Pukyong National University, (48513) 45, Yongso-ro, Nam-Gu, Busan, KOREA
Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000, Menteşe, Muğla, TURKEY
Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, POLAND


In this study, the age and growth characteristics of Randall’s threadfin bream (Nemipterus randalli Russell, 1986) in Gökova Bay (southern Aegean Sea) were examined. In total, 221 (varied between 10.8-21.9 cm in total length and 18.19-150.10 g in total weight) were examined on a monthly basis between May 2015 and April 2016. The sex ratio (male: female) was 1:0.51 and showed significant variation depending on age classes. The length-weight relationship parameters were estimated as follows; a = 0.0171, b = 2.92, r 2= 0.92 (n = 221). Ages ranged from 1 to 5, and the 2-years group was dominant (42.53%) for both sexes. von Bertalanffy growth parameters and phi-prime growth performance index value calculated as L∞= 27.57 cm, k= 0.183 year-1, t0= -2.88 and Φ= 2.14 for all individuals. The results representing the first study on age and growth of N. randalli in the southern Aegean Sea.

Keywords: Randall’s threadfin bream, Nemipteridae, Lessepsian fish, Gökova Bay

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