Mortality Rates, Relative Yield Per Recruit and Parasitic Infestations of Striped Piggy (Pomadasys stridens) from Lake Temsah, Egypt | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Volume 29, Issue 5, September and October 2025, Pages 361-380 PDF (811.43 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2025.416415.6454 | ||
| Authors | ||
| Mai Nashaat* 1; Noha Eid2 | ||
| 1National Institute of Oceanography and Fisheries (NIOF), Egypt. | ||
| 2National Institute of Oceanography and Fisheries, NIOF, Egypt | ||
| Abstract | ||
| Striped piggy fish (Pomadasys stridens) were randomly collected from Lake Temsah by fishermen during the 2022 fishing season. Mortality rates and relative yield per recruit were calculated using the von Bertalanffy growth function method. The estimated length at first capture (Lc) was 9.32cm. The natural, total, and fishing mortality rates were estimated at 0.32, 1.70, and 1.42 year⁻¹, respectively. These findings indicate a high level of exploitation of the striped piggy population in Lake Temsah. Relative yield per recruit analysis confirmed that the population of P. stridens is overexploited. This highlights the urgent need for management measures to ensure the long-term sustainability of the fishery. Additionally, a subsample of 200 fish was examined for parasitic infestations. The prevalence of Livoneca redmanii Leach, 1818 (Isopoda, Cymothoida) was 15%. Infestation was higher in females (66.6%) compared to males (33.3%). These results suggest that parasitic infestations may contribute to the elevated mortality rates observed in the population. Further research is recommended to assess the parasitic impacts on other commercially important fish species in the Suez Canal region, given their ecological and economic significance. | ||
| Keywords | ||
| Fisheries management; Livoneca redmanii; Mortality rates; Per recruit analysis; Pomadasys stridens | ||
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