Population Dynamics of Macrobrachium nipponense (De Haan, 1849) in Anzali Lagoon, Iran | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 31, Volume 26, Issue 2, March and April 2022, Pages 477-487 PDF (739.92 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2022.231609 | ||
| Author | ||
| Mehrnoush Aminisarteshnizi | ||
| Abstract | ||
| This study estimates growth parameters, length-frequency growth performance index, longevity, and total mortality of the oriental river prawn, Macrobrachium nipponense, from Anzali lagoon, Iran. The von Bertalanffy growth parameters were, L∞ = 8.65 cm, K = 0.82 yr-1, and t0 = -0.146 yr-1. The growth performance index, Ф', was 1.78. Total mortality, Z, from the linearised length-converted catch curve was 4.89 yr-1. Natural mortality M calculated from Pauly's empirical formula was 2.1 yr-1, and fishing mortality F calculated from Z - M was 2.74 yr-1. The exploitation ratio E calculated from F/Z was 0.57. The longevity was about 3 yrs. Length-frequency showed no significant difference between the two sexes (p>0.05). According to the results of this study, it seems that the Anzali lagoon has a suitable environment for the life and growth of M. nipponense. | ||
| Keywords | ||
| Growth; mortality; length frequency; Anzali lagoon; Macrobrachium nipponense | ||
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