Some biological parameters of the Pontic shad (Alosa immaculata Bennet, 1835) from the Southeastern Black Sea


  • Tuncay Yeşilçiçek Recep Tayyip Erdogan University



Alosa Immaculata, Black Sea, Condition, Growth Type, Pontic Shad


The present study investigates some basic biological parameters (size and sex composition, LWRs and condition factor) of Pontic shad, Alosa immaculata from the Southeastern Black Sea. Fish samples were monthly caught from Rize coasts in the Northeastern Black Sea of Türkiye from October 2021 to May 2022 and totally 270 Pontic shad (147 females and 123 males) ranging from 12.5 cm to 32.6 cm TL were sampled during the sampling period. The sex ratio of female to male was calculated as 1.20:1.00 (X2 test; p˃0.05). The total length-weight relationships were determined as W=0.0047TL3.157 for females, as W=0.0058TL3.088 for males and as W=0.005TL3.135 for over all individuals with the b-values were significantly different from isometric growth (Pauly’s t-test; p<0.05) indicating (+) allometric growth for females and over all individuals, while males showed isometric growth pattern(Pauly’s t-test; p˃0.05). The regression analysis revealed that r2>0.9 showing a highly significant correlation between total length and weight. Fulton's condition factor (K) values ranged from 0.611 to 0.943 (mean 0.763±0.075) in females and from 0.588 to 0.948 (mean 0.740± 0.080) in males indicating a poor growth condition in this habitat throughout the sampling period. This study will provide a baseline on some biological parameters of Pontic shad to provide a guideline for the fisheries management authority and fisheries scientists for further research. Furthermore, the reported results may contribute to the conservation and sustainability of this species in the area.

Author Biography

Tuncay Yeşilçiçek, Recep Tayyip Erdogan University

Dept. of Fishing Technology, Faculty of Fisheries, Türkiye




How to Cite

Yeşilçiçek, T. (2023). Some biological parameters of the Pontic shad (Alosa immaculata Bennet, 1835) from the Southeastern Black Sea. International Journal of Advanced Natural Sciences and Engineering Researches (IJANSER), 7(11), 601–606.