Trammel Net Selectivity for Croaker Fish in Musi River Estuary of South Sumatra: A Quantitative Analysis

Fauziyah, Fauziyah and Luinski, Stephanie and Isnaini, Isnaini and Fatimah, Fatimah and Aprianti, Nabila and Indriani, Dwi Puspa and Agustriani, Fitri and Diansyah, Gusti and Purwiyanto, Anna I. S. and Nur, Muhammad and Ningsih, Ellis Nurjuliasti (2025) Trammel Net Selectivity for Croaker Fish in Musi River Estuary of South Sumatra: A Quantitative Analysis. Egyptian Journal of Aquatic Biology & Fisheries.

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Abstract

Trammel nets are one of the effective fishing gears widely used in small scale fisheries. Understanding their selectivity is crucial for fisheries management in determining appropriate mesh sizes that optimize the capture of target species while reducing bycatch and discards. This study aimed to evaluate the selectivity of trammel nets with different mesh sizes (1.75 and 2 inches) for capturing the croaker species (Otolithoides pama and Panna microdon) in the Musi River Estuary, South Sumatra, Indonesia. Experimental fishing was conducted to collect total fish length data, resulting in 248 specimens across 16 species. Holt's Model (normal location model) was applied to estimate the trammel net selectivity, while the size distributions were compared using the two-sample Kolmogorov-Smirnov (K-S) test. The results indicated that smaller mesh sizes caught a greater number of fishes, but larger mesh sizes obtained catches with a greater total length. The K-S test revealed significant differences in length-frequency distributions for P. microdon (P=0.0230.05). The optimal catch sizes for both croaker species were above the length at first maturity recorded for O. pama. Accordingly, the trammel nets with 1.75 and 2-inch mesh sizes are still suitable for capturing mature croaker fish in the Musi River Estuary and may help reduce the capture of immature fish. These findings would provide valuable empirical evidence for fisheries management to determine appropriate inner-panel mesh sizes for the sustainable exploitation of both croaker species under study.

Item Type:	Article
Subjects:	#3 Repository of Lecturer Academic Credit Systems (TPAK) > Articles Access for TPAK (Not Open Sources)
Divisions:	08-Faculty of Mathematics and Natural Science > 54241-Marine Science (S1)
Depositing User:	Fitri Agustriani
Date Deposited:	15 Aug 2025 08:37
Last Modified:	15 Aug 2025 08:37
URI:	http://repository.unsri.ac.id/id/eprint/182423

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