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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.
Changes in Blood Glucose and Cortisol in Nile Tilapia (Oreochromis niloticus) with Different Salinities Satiti, Cinca Hayyu Putri; Faqih, Abdul Rahem; Mahmudi, Mohammad; Moehammad, Khibar Syiar
The Journal of Experimental Life Science Vol. 15 No. 3 (2025)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2025.015.03.03

Abstract

Nile tilapia (Oreochromis niloticus) is a freshwater fish of high economic value that can tolerate a wide range of salinities, offering potential for the utilization of idle coastal ponds in northern Java. This study aimed to evaluate the physiological stress responses of Nile tilapia exposed to different salinity levels by measuring blood glucose levels, cortisol concentrations, and survival rates. The experiment was conducted for 28 days at the Sumberpasir Freshwater Fisheries Laboratory, Malang, using a Completely Randomized Design with four salinity treatments (0, 7, 14, and 21 ppt) in triplicate. Data on blood glucose and cortisol were analyzed using ANOVA (p < 0.05), while survival rate and water quality were analyzed descriptively. The results showed that salinity significantly affected blood glucose levels, with the highest value recorded at 21 ppt (115±39.2 mg.dL-1) and the lowest at 0 ppt (63±29.9 mg.dL-1). In contrast, cortisol levels were not significantly different among treatments, with the lowest average at 14 ppt (33.23±4.17 ng.mL-1). The highest survival rate was found at 0 and 7 ppt (100%), declining to 98% and 93% at 14 and 21 ppt, respectively. It is concluded that Nile tilapia can adapt physiologically to salinity levels of up to 21 ppt, with 14 ppt being the most stable level for stress adaptation. Further study is recommended to assess long-term growth and molecular indicators supporting the development of brackish water aquaculture.
Optimalisasi Pembenihan Ikan Nila dengan Puddle System pada Kelompok KJA Mina Makmur Jaya Malang Musa, Muhammad; Mahmudi, Mohammad; Afandhi, Aminudin; Lusia, Dwi Ayu; Lusiana, Evellin Dewi; Hamidah, Mawadah Ikah; Anggraini, Dani; Mahmuda, Anugrah Fakhri Fadhlullah; Sari, Vella Ananda; Sandikah, Riski Pebri
Abdi Geomedisains Vol. 6, No. 2, December 2025
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The Mina Makmur Jaya Floating Net Cage (KJA) Group in Gampingan is a community group engaged in the breeding of Nile tilapia (Oreochromis niloticus) using the puddle system method, located in Gampingan Village, Pagak District, Malang Regency. The main problem faced in this business is the slow growth of fish fry, which results in suboptimal seed production. This condition is caused by several factors: water quality that is highly dependent on weather conditions, inappropriate breeding techniques, and inadequate nutrition or feed. The proposed solutions include conducting socialization activities and preparing a water quality management module based on Adaptive Water Management, providing water quality measuring instruments, organizing training and SOP development for seed breeding and packaging techniques, and conducting socialization on feed management for tilapia hatchery. The results of these activities showed an increase in partners’ technical skills, business management efficiency, and seed quality. In addition, outputs were produced in the form of SOPs, training modules, activity documentation, and new skills that help improve tilapia fry productivity, reduce operational costs, and expand distribution reach. Thus, this program contributes to strengthening food security, increasing economic value, and ensuring the sustainability of tilapia breeding enterprises at the local level.
Pemanfaatan Limbah Ternak Menjadi Pupuk Organik untuk Mendukung Pertanian Berkelanjutan pada Kelompok Tani Mojomakmur, Kota Batu Mahmudi, Mohammad; Musa, Muhammad; Lusiana, Evellin Dewi; Buwono, Nanik Retno; Alvionita, Rakhel Marsyanda Vanny; Tasya, Iren Ana
Abdi Geomedisains Vol. 6, No. 2, December 2025
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The Mojomakmur farmer group in Mojorejo Village, Junrejo District, Batu City faces the challenge of abundant goat livestock waste that has not been properly utilized, resulting in unpleasant odors and potential environmental pollution. In fact, this waste has high agronomic value when processed into organic fertilizer to support sustainable agriculture. Limited knowledge, skills, and facilities are the main obstacles hindering effective waste utilization. To address these issues, this community service program was carried out through awareness activities on the importance of livestock-waste management, training on the production of solid and liquid organic fertilizers, and the implementation of appropriate technology that farmers can apply easily and efficiently. In addition, intensive mentoring and continuous evaluation were conducted to ensure that the acquired skills can be independently implemented. This program is expected to promote more environmentally friendly waste management, increase the added value of livestock waste for farmers, and strengthen sustainable agricultural practices.
Identification of Coral Reefs in Mamburit Waters, Sumenep Regency Sawiya, Sawiya; Mahmudi, Mohammad; Guntur, Guntur
The Journal of Experimental Life Science Vol. 4 No. 1 (2014)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1120.048 KB) | DOI: 10.21776/ub.jels.2014.004.01.04

Abstract

This research was conducted in September to October 2013 in Mamburit Waters, Sumenep Regency. This study was aimed to assess the percentage of coral reefs and acknowkedge the type of the coral reefs. Coral reefs was observed with the Line Intercept (LIT) method laid parallel to the coastline in the depth of 3 m and 10 m in windward and leeward area. Total of 59.88% coral reefs lived in leeward area in 3 m depth includes in good category and the percentage of dead coral reefs and other fauna for 40.12%. In the 10 m depth, 69.19% live coral reefs include as medium category with percentage of dead coral reefs and other fauna for 30.81%. Winward location of 3 m depth has 68.38% live coral reefs in good category and percentage of dead coral reefs and other fauna for 31.62%. Whereas for 10 m depth, 40.86% of live coral reefs include as medium category with percentage of dead coral reefs and other fauna for 59.14 %. Keywords: coral reefs, leeward, windward, Mamburit
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 Alvionita, Rakhel Marsyanda Vanny Aminuddin Afandi Aminudin Afandhi Aminudin Afandhi Andi Andi Kurniawan Andi Kurniawan Anggraini, Dani 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 Hamidah, Mawadah Ikah Heri Ariadi Ikha Safitri Irfan Aziz Yoviandianto Jamal, Ramli Kusriani . kusriani kusriani Ludfi, Ludfi Lusia, Dwi Ayu Lutfi Ni’matus Salamah Luthfatul Amaliana, Luthfatul Mahmuda, Anugrah Fakhri Fadhlullah Moehammad, Khibar Syiar 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 Sandikah, Riski Pebri Sarah Hutahaean Sari, Vella Ananda 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. Tasya, Iren Ana Tisya W. Nisya Umi Zakiyah, Umi Wahyudi Arif Wirastika Adhihapsari Yenny Risjani Yoviandianto, Irfan Aziz Yulma, Yulma Yuni Kilawati