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All Journal Jurnal Sumberdaya Akuatik Indopasifik Jurnal Perikanan Universitas Gadjah Mada
Bayu Pranata
Fakultas Perikanan Dan Ilmu Kelautan, Universitas Papua
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology

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Pembesaran Ikan Nila (Oreochromis niloticus) pada Budidaya Sistem Resirkulasi Menggunakan Filtrasi Tanaman Hydrilla verticillata dan Ceratophyllum demersum Bayu Pranata; Aradea Bujana Kusuma
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 3 (2021): Agustus
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.3.153

Abstract

This study combined Hydrilla verticillata with Ceratophyllum demersum as a filter in the recirculation system of Tilapia aquaculture. The research objective was to determine the growth rate of tilapia in the recirculation system culture. The filtration used in the recirculation system was H. verticillata and C. demersum. The research method used a completely randomized design (CRD). The parameters observed were fish survival, absolute growth, specific growth rate (SGR), Feed Conversion Ratio (FCR) and water quality. The survival of the fish survived the maintenance of 100%. Individual absolute weight growth ranged from 8.76 to 16.6 g / week. The specific growth rates of tilapia ranged from 2.74 to 4.49%. The FCR value is very good, namely 1.2 and the average temperature, pH and DO values ​​are still in the proper range for the growth of tilapia. During maintenance, only one water change is carried out. Cultivation of the recirculation system is very effective and efficient to apply, especially in areas with limited water availability.
Reef Fish Species Diversity Using Environmental DNA Metabarcoding in Mansinam and Lemon Island Waters, Manokwari Regency Bayu Pranata; Aradea Bujana Kusuma; Muhamad Ilham Azhar
Jurnal Perikanan Universitas Gadjah Mada Vol 24, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.73037

Abstract

Biodiversity has an essential role in the stability of an ecosystem. A high level of biodiversity indicates a more stable and stable ecosystem. The decline in the quality of ecosystems such as coral reefs, seagrass beds, and mangrove forests due to anthropogenic factors and global warming threaten biodiversity. This study aims to determine the diversity of reef fish species using an environmental DNA (eDNA) approach in the waters of the Mansinam and Lemon, Manokwari Regency islands. The analysis results detected 158 individual fish comprising 26 species from 10 families (sequence identity 97-100%). The highest species abundance was found in the Pomacentridae Family. The Pomacentridae family is an ornamental fish species in coral reef ecosystems. In addition, several species from the families Serranidae, Caesionidae, Mullidae, Holocentridae, Balistidae, Scaridae, and Labridae were also detected; fish species from these families are catch targets for fishers with economic value. Assessment of fish species diversity using the Shannon-Wiener method. The diversity of fish species in the waters of the islands of Mansinam and Lemon is in the high category, namely 3.17. High diversity indicates a stable and stable ecosystem condition.
Co-Authors Aradea Bujana Kusuma Aradea Bujana Kusuma Marhan Manaf Muhamad Ilham Azhar Vicky Arnold Mofu