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Keanekaragaman Jenis Ikan Sidat (Anguilla spp.) di Provinsi Bali Septiana, Dwi Rizki; Suryati, Ni Komang; Septimesy, Annisa; Ningsih, Ellis Nurjuliasti; Pamungkas, Yanu P; Muthmainnah, Dina; Fauziyah, Fauziyah
Jurnal Penelitian Sains Vol 27, No 2 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i2.1165

Ikan sidat (Anguilla spp.) merupakan ikan katadromus yang memiliki siklus hidup kompleks dari laut hingga perairan darat, dengan tahapan perkembangan dari telur yang menetas menjadi leptocephalus, glass eels, elvers, yellow eels, hingga silver eels. Penelitian ini bertujuan untuk mengidentifikasi keanekaragaman jenis berdasarkan morfologi, morfometrik, dan analisis genetik ikan sidat di Provinsi Bali. Identifikasi morfologi dilakukan dengan karakterisasi ano-dorsal fin, dan corak kulit, sedangkan uji morfometrik melibatkan pengukuran jarak sirip anal dan dorsal. Berdasarkan analisis morfologi, morfometrik, dan genetika penelitian ini berhasil mengidentifikasi tiga spesies utama ikan sidat yang ditemukan di perairan Provinsi Bali yaitu A. marmorata (58%), A. bicolor bicolor (40%), dan A. interioris (2%), dengan distribusi yang berbeda berdasarkan lokasi dan kondisi habitat. Analisis genetik menunjukkan bahwa A. marmorata memiliki tingkat homologi tinggi, A. interioris lebih jauh hubungannya tetapi masih terkait, sementara A. bicolor bicolor memiliki variasi genetik lebih beragam, memberikan dasar penting bagi pengelolaan dan konservasi sidat di Bali.

The abundance and types of plankton in milkfish ponds at Banyuasin South Sumatera Fitrani, Mirna; Septiyani, Reni; Jubaedah, Dade; Wijayanti, Marini; Septimesy, Annisa; Mulyani, Yenni Sri
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 2 (2023): AUGUST 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.2.30065

Tidal lowland is an area with significant potential for fisheries development, especially in aquaculture. Abundant water supply and land availability provide great opportunities for cultivating aquaculture commodities such as fish, shrimp, and crab. However, effective water quality management poses a significant challenge, necessitating a comprehensive evaluation based on biological, physical, and chemical assessment. Among the crucial parameters influencing water fertility, the presence of plankton stands out. Therefore, this study aimed to investigate water fertility by identifying plankton species, abundance, diversity, dominancy, and water quality in milkfish ponds at Banyuasin, South Sumatra. The results showed that the abundance of phytoplankton and zooplankton ranged from 1030-1791 individual L-1 and 103-461 individual L-1, respectively. Furthermore, Bacillariaceae was recorded to be the highest specie, followed by Cyanophyta, Chlorophyta, Protozoa, Rotifer, and Arthropoda. The range diversity index varied between 1 to 2.6, while the density and dominance indices ranged from 0.9 and 1, as well as 0.1 and 0.8, respectively. The classification of the pond's fertility fell within the mesotrophic category, signifying a moderate level. In conclusion, the water quality maintained an optimum range, thereby supporting the growth of plankton and milkfish. Meanwhile, only ammonia was below the optimum range stipulated by PP No. 22 of 2021 suggested.Keywords:bioindicatormilkfishplanktontidal lowlandwater quality

The abundance and types of plankton in milkfish ponds at Banyuasin South Sumatera Fitrani, Mirna; Septiyani, Reni; Jubaedah, Dade; Wijayanti, Marini; Septimesy, Annisa; Mulyani, Yenni Sri
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 2 (2023): AUGUST 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.2.30065

Tidal lowland is an area with significant potential for fisheries development, especially in aquaculture. Abundant water supply and land availability provide great opportunities for cultivating aquaculture commodities such as fish, shrimp, and crab. However, effective water quality management poses a significant challenge, necessitating a comprehensive evaluation based on biological, physical, and chemical assessment. Among the crucial parameters influencing water fertility, the presence of plankton stands out. Therefore, this study aimed to investigate water fertility by identifying plankton species, abundance, diversity, dominancy, and water quality in milkfish ponds at Banyuasin, South Sumatra. The results showed that the abundance of phytoplankton and zooplankton ranged from 1030-1791 individual L-1 and 103-461 individual L-1, respectively. Furthermore, Bacillariaceae was recorded to be the highest specie, followed by Cyanophyta, Chlorophyta, Protozoa, Rotifer, and Arthropoda. The range diversity index varied between 1 to 2.6, while the density and dominance indices ranged from 0.9 and 1, as well as 0.1 and 0.8, respectively. The classification of the pond's fertility fell within the mesotrophic category, signifying a moderate level. In conclusion, the water quality maintained an optimum range, thereby supporting the growth of plankton and milkfish. Meanwhile, only ammonia was below the optimum range stipulated by PP No. 22 of 2021 suggested.Keywords:bioindicatormilkfishplanktontidal lowlandwater quality

Peningkatan Efisiensi Pakan dan Performa Pertumbuhan Ikan Betok (Anabas testudineus) yang Dipelihara pada Periode Pemuasaan yang Berbeda Fitrani, Mirna; Amin, Mohamad; Rismoni, Indah; Wijayati, Marini; Septimesy, Annisa; Mulyani, Yenni Sri; Mukti, Retno Cahya
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 3 (2025): 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.2025.Vol.9.No.3.478

Fish feed is known to account for 60-70% of total aquaculture costs, posing a significant challenge to farmers. To address the issue, this study explored the effectiveness of periodic starvation in improving feed efficiency and growth performance of climbing perch while reducing the cost of purchasing feed. The method used was a completely randomized design (CRD) analyzed using ANOVA. Four treatments were applied with three replicates each. The treatments consisted of P0 (no fasting), P1 (one day of fasting followed by one day of feeding), P2 (one day of fasting and two days of feeding), and P3 (one day of fasting and three days of feeding). The parameters observed included feed efficiency, growth in length and absolute weight, and fish survival rates. The results showed that periodic starvation significantly impacted the absolute body weight growth and feed efficiency (P<0.05). However, no effect was observed on the survival rates and absolute length growth. Among the treatments, P1 showed the best results, with feed efficiency of 21.87%, length growth of 0.23 cm, weight growth of 0.22 g, and survival rate of 100%. In conclusion, this study found that periodic starvation combined with feeding could significantly improve fish feed use efficiency and save fish farmers' costs.

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