Abstract
Length-weight relationships (LWRs) and condition factor were estimated for five economical marine fish species collected monthly using a hand line (hook sizes: 3, 5, 7, 9, and 11) and gillnet (stretched mesh sizes: 13, 14 and 15 cm) in the artisanal vessels from the fishing grounds of Bushehr province located in the Persian Gulf, Iran during October 2018 to June 2019. The LWRs for the fish species were W = 0.0144L3.071 (R2 = 0.99) for S. persicus, W = 0.0329L2.962 (R2 = 0.985) for P. maculosus, W = 0.0275L2.873 (R2 = 0.976) for U. helvola, W = 0.0296L2.867 (R2 = 0.968) for C. chrysophrys and W = 0.0387L2.859 (R2 = 0.982) for P. orbicularis. The estimated range for a was between 0.0144 and 0.0389, and for b was between 2.859 and 3.071. Length and weight ranges for S. persicus (L = 16.2–36.3 cm, W = 84.8-838.5 g), P. maculosus (L = 12.2–48.3 cm, W = 63.7–2648 g), U. helvola (L = 18.9–44.6 cm, W = 124.5-1558.8 g), C. chrysophrys (L = 11.4–67.5 cm, W = 28.5-4935.2 g), and P. orbicularis (L = 17.6–56.2 cm, W = 121.7-3352.4 g) are wider than reported in previous studies. Also, K values were 1.82 ± 0.12 for S. persicus, 2.35 ± 0.11 for P. maculosus, 1.87 ± 0.16 for U. helvola, 1.94 ± 0.23 for C. chrysophrys and 2.29 ± 0.31 for P. orbicularis. The information about LWRs of Scarus persicus and Uraspis helvola are reported for the first time in the Persian Gulf. The results obtained can be beneficial as basic information for fisheries management and improvement of the technical performance of biologists in future studies.
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The authors are grateful to Vice Presidency for Research and Technology of Gorgan University of Agricultural Sciences and Natural Resources (GAU) for their support during the study period.
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Pouladi, M., Paighambari, S.Y., Millar, R.B. et al. Length-weight relationships and condition factor of five marine fish species from Bushehr Province, Persian Gulf, Iran. Thalassas 36, 457–461 (2020). https://doi.org/10.1007/s41208-020-00208-w
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DOI: https://doi.org/10.1007/s41208-020-00208-w