1_P_210 Length‐weight and length‐length relationships, Relative condition factor and Fulton’s condition factor of Five Acipenser species from the southwestern Caspian Sea
Moradinasab, Gh.*1; Paighambari, S.Y.2; Khoshkholgh, M.R.3; Yousefi Jourdehi, A.4 1
. Ph. D. student of Fisheries Exploitation and Production, Faculty of Marine Science and Technologies, Hormozgan University, Bandar Abbas, Iran. E‐mail:
[email protected]; 2. Assistant prof., Dept. of Fisheries, Gorgan University of Agricultural Sciences and Natural Resources; 3 . Assistant prof., Dept. of Fisheries, Faculty of Natural Resources, Guilan University, Someh Sara, Iran; 4. International Sturgeon Research Institute of Dr. Dadman, Rasht, Iran.
This study was conducted to determine length‐weight and length‐length relationships, relative condition factor (Krel) and Fulton’s condition factor (K) for five species including Acipenser persicus, A. stellatus, A. nudiventris, A. gueldenstaedti and Huso huso belonging to Acipenseridae family. The data reported in this study were collected by two different types of fishing gears: fixed gill net with different specify mesh size range and beach seine in the southwestern of the Caspian Sea during 5 years (2005‐2009). During sampling, 3435 specimens were measured and weighed. The sample size ranged from 40 cm for A. persicus to 361cm for H. huso. The values of the exponent b in the length‐weight relationships (LWRs) ranged from 2.4941 to 3.4964. The growth was positive allometric for A. gueldenstaedti and A. stellatus (b>3, P
