| Autor: |
Triharyuni, Setiya, Aisyah, Puriskan, Kasim, Kamaluddin, Samhudi, Husnah, Nugroho, Duto, Fudholi, Ahmad |
| Předmět: |
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| Zdroj: |
International Journal of Sustainable Development & Planning; Sep2023, Vol. 18 Issue 9, p2695-2701, 7p |
| Abstrakt: |
The Nile tilapia (Oreochromis niloticus) is a predominant species that commercially fished in Jatibarang Reservoir. About 72% of the total catch from the Reservoir consists of the Nile tilapia. Fishing activity is intense since a substantial number of fishers, both local and outsiders, have engaged in the fishery for decades. Although restocking of the species has regularly been conducted annualy, the indication of decreasing Nile tilapia stock still exists and has become a concern of the local management authorities. This research aims to evaluate and determine the sustainable potential yield of Nile tilapia in the Jatibarang Reservoir using the Length-Based Thomson & Bell prediction model as part of the improvement of previous studies on carrying capacity and economic beneficiary. A series of observations on biological data of individual species, such as the length-weight, gonadal maturity stage, and sex differentiation, were collected daily for nine months, from March to December 2018 were performed as a database for the analysis. The predicted population parameters indicated that the asymptotic length (L) and growth rate (K) are 58.2 cm and 0.51/year, respectively. The relative fishing mortality (F/M) is 0.39, indicating a relatively low harvest rate. The estimated Maximum Sustainable Yield for the Nile tilapia in Jatibarang Reservoir is about 9.76 tons/yr. This result would contribute to developing the baselines for the local fisheries management plan of Jatibarang Reservoir by the local authority to support the alternative source of income for surrounding communities. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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