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VARIOUS SALINITY EFFECTS ON NILE TILAPIA SEEDS (OREOCHROMIS NILOTICUS) GROWTH RATE IN ARTIFICIAL SEAWATER Satiti, Cinca Hayyu Putri; Faqih, Abd. Rahem; Mahmudi, Mohammad
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Abstract

Nile tilapia (Oreochromis niloticus) is a euryhaline fish that can live in both freshwater and brackish waters. This research aims to determine the optimal salinity for the growth of Nile tilapia in an effort to revitalize abandoned ponds in the coastal areas of Java Island, Indonesia. The research was conducted at the Laboratorium Perikanan Air Tawar Sumberpasir Malang. The salinity treatments given were 0 ppt (control), 7 ppt, 14 ppt, and 21 ppt. The parameters observed include Absolute Growth, Specific Growth Rate, Feed Conversion Ratio (FCR), and water quality. The results show that the best Absolute Growth in Weight and Length occurred at the 7 ppt treatment with values of 8.82±0.40g and 2.45±0.16 cm. The best Specific Growth Rate for weight and length in the 7 ppt treatment were 97±0.07% and 67±0.08%, respectively. The best feed conversion in the 0 ppt treatment (1.28±0.49%). The water quality in this study was already optimal according to the Quality Standards for Nile Tilapia Farming in Indonesia.
Study of Chlorella sp. Population Growth in The Laboratorium Scale Buwono, Nanik Retno; Mahmudi, Mohammad; Afandi, Aminuddin; Amaliana, Luthfatul; Garang, Benaya Tadeus; Sofi, Firuliza Nurus
Jurnal Sains dan Teknologi Perikanan Vol 5 No 2 (2025): OKTOBER
Publisher : Fisheries Science Study Program, Faculty of Science and Technology, Muhammadiyah University of Sidenreng Rappang.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55678/jikan.v5i2.1685

Abstract

Ketersediaan pakan alami dalam budidaya ikan ataupun udang menjadi tantangan, dimana bisa menjadi peluang untuk para pembudidaya agar dapat meningkatkan produksi perikanan budidaya. Pakan alami yang berkualitas tinggi sangat diperlukan untuk mendukung pertumbuhan larva ikan dan udang pada awal mula kehidupan. Pakan alami seperti Chlorella sp. dalam budidaya perikanan tidak bisa sepenuhnya bergantung pada alam sebagai sumber utama, melainkan diperlukan usaha pengkulturan untuk meningkatkan produksi Chlorella sp. sehingga para petambak dapat mengoptimalkan produktivitas budidaya mereka. Metode dalam penelitian ini terdiri dari persiapan bibit mikroalga, persiapan alat kultur, sterilisasi alat dan bahan, proses kultur, dan pemantauan setelah kultur dilakukan. Stoples ukuran 3 liter sebagai wadah kultur skala laboratorium. Kepadatan populasi mikroalga pada setiap sampel ditentukan dengan metode hitung langsung menggunakan haemocytometer dan mikroskop dengan perbesaran 10x. Beberapa faktor lingkungan dapat mempengaruhi pertumbuhan Chlorella sp. ini selama masa kultur seperti kualitas air dalam beberapa kondisi seperti kimia dan mediannya. Parameter fisik seperti suhu, intensitas cahaya, dan aerasi, serta parameter kimia seperti suhu, DO, pH, dan salinitas digunakan untuk mengevaluasi kualitas air. Penggunaan pakan alami sebagai tambahan nutrisi dapat meningkatkan kualitas hasil budidaya udang vaname.
Benthic and Planktonic Microalgae Community in Probolinggo Beach: Biodiversity Arsad, Sulastri; Sihombing, Rut Suharni P; Mahmudi, Mohammad; Luthfi, Oktiyas Muzaky; Safitri, Ikha; Pratiwi, Fika Dewi
Journal of Aquaculture and Fish Health Vol. 13 No. 1 (2024): JAFH Vol. 13 No. 1 February 2024
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v13i1.40769

Abstract

Microalgae, micro-sized plant organisms, play a crucial role in aquatic ecosystems. While many microalgae inhabit substrates or the bottom of water bodies, several types are planktonic. This study aimed to identify the types and abundance of microalgae in both sediment and water column habitats, as well as to analyse the environmental factors influencing their abundance. The research encompasses observations of water quality factors, microalgae abundance, relative abundance, diversity index, evenness index, and dominance index. Statistical analyses were using non-metric multidimensional scaling (NMDS) and Canonical Correspondence Analysis (CCA). The study was conducted in May-June 2022, with bi-weekly sampling at three points within each location for two months. Microalgae identified in the coastal area of Probolinggo belong to the Bacillariophyceae, Cyanophyceae, and Chlorophyceae classes. The highest microalgae abundance in sediment habitat was 58,472 ind/cm2, while in the water column was 4,118 ind/l. Diversity, evenness, and dominance indices in both sediment and water column habitats ranged from 1.93 to 2.61, 0.88 to 0.98, and 0.09 to 0.10, respectively. NMDS and CCA analyses indicate a graphical representation of the Bacillariophyceae class, demonstrating its prevalence across all sites.
Dynamics of Water Quality for Vannamei Shrimp Cultivation in Intensive Ponds in Coastal Areas Pratiwi, Rizky Kusma; Mahmudi, Mohammad; Faqih, Abdul Rahem; Arfiati, Diana
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.4322

Abstract

Cultivators increase production using intensive cultivation which applies stocking densities and feeding in high quantities, which triggers a decrease in water quality, both cultivation water and cultivation wastewater because it contains high levels of organic matter. Changes in water quality have an impact on plankton community structure. This research aims to determine the dynamics of the physical, chemical, and biological quality of cultivation media water and the disposal of vaname shrimp cultivation waste in Ujungpangkah District, Gresik Regency. The research was conducted in January 2023 using a survey method. Water and plankton samples were taken from reservoirs, ponds, and pond waste disposal sites. Sampling was carried out in vaname shrimp cultivation ponds in the Coastal Area of ​​Ujungpangkah District, Gresik Regency. The physical and chemical quality of water has a pattern of changes up and down but is relatively the same and stable every week. All of these water quality parameters show a pattern of change that is quite good for the growth of vaname shrimp, but in waste disposal, the parameters for nitrate, phosphate, ammonia, and TOM are above the quality standards. The highest abundance of plankton is in waste dumps, with the highest phytoplankton coming from the Bacillariophyta phylum (49%), while zooplankton comes from the Rotifera phylum (54%). Regular monitoring of water quality in ponds and waste disposal sites is required so that it remains stable and safe for the environment.
Co-Authors ., Kusriani Abdul Muqsith Abdul Muqsith Abdul Muqsith Abdul Muqsith Abdul Rahem Faqih Abdul Wafi Abdul Wafi, Abdul Afandi, Aminuddin Akhmaddin, Derry Bagus Alivia Salsabila K.T.S Aminuddin Afandi Aminudin Afandhi Andi Andi Kurniawan Andi Kurniawan Arief Darmawan Arief Darmawan Arsad, Sulastri Arsyadi, Sulastri Asihing Kustanti Asus Maizar Suryanto H Bambang Semedi Diana Arfiati Dini Sofarini Dwi Ayu Lusia Endang Yuli Herawati Evelin Evellin Dewi Lusiana Evellin Dewi Lusiana Evellin Dewi Lusiana, Evellin Dewi Evellin Lusiana Fani Fariedah Fika Dewi Pratiwi Garang, Benaya Tadeus Gatut Bintoro Guntur Guntur Gurinda, Gita Adistri Heri Ariadi Ikha Safitri Irfan Aziz Yoviandianto Jamal, Ramli Kusriani . kusriani kusriani Ludfi, Ludfi Lutfi Ni’matus Salamah Luthfatul Amaliana, Luthfatul Mohamad Fadjar MOHAMAD FADJAR Mohamad Fadjar Mohamad Fadjar Mohammad Fadjar Mr. Supriatna Muhammad Fadjar Muhammad Fadjar Muhammad Musa Muhammad Musa Muhammad Musa Muhammad Musa Muhammad Triaji Mulyanto Mulyanto Mulyanto Mulyanto Nanik Nanik Retno Buwono Nisa, Tisya Wahidatun Nisya, Tisya W. Nuddin Harahab Nur Aliya Nabila Zsalzsabil Nurdin Harahab Nurdin Harahab oktiyas muzaky Luthfi, oktiyas muzaky Pertiwi, Putri Rahayu Pramudia, Zulkisam Pratiwi, Rizky Kusma Putri, Amelia Wahyuning Putri, Cesarlia Dwi Sulestyanar putut wijanrko Rafli Wildan Ramadiansyah Rahmahnia Febriyani Rahman, Fathor Riska Ayu Lestari Rizky Kusma Pratiwi Rona Aji Lestyaningrum Ruly Isfatul Khasanah Sarah Hutahaean Satiti, Cinca Hayyu Putri Sawiya Sawiya Sihombing, Rut Suharni P Siti Nurchotipah Siwi Oktafia Sabtaningsih Soemarno Soemarno Sofi, Firuliza Nurus Sri Sudaryanti, Sri Sri Surdayanti Sugiarto, Kevin Pratama Sulastri Arsad Sulastri Arsad Supriatna Supriatna Supriatna Supriatna Supriatna Supriatna, Mr. Tisya W. Nisya Umi Zakiyah, Umi Wahyudi Arif Wirastika Adhihapsari Yenny Risjani Yoviandianto, Irfan Aziz Yulma, Yulma Yuni Kilawati