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All Journal Jurnal Gamma E-Dimas: Jurnal Pengabdian kepada Masyarakat Acta Aquatica: Aquatic Sciences Journal Jurnal Riset Akuakultur Jurnal Pengabdian Kepada Masyarakat MEMBANGUN NEGERI Jurnal Gema Ngabdi Amalee: Indonesian Journal of Community Research & Engagement Indonesian Journal of Tropical Aquatic Jurnal Abdi Insani Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Community Service and Empowerment PENGABDI: Jurnal Hasil Pengabdian Masyarakat Jurnal Pengabdian Masyarakat (ABDIRA) JAGO TOLIS : Jurnal Agrokompleks Tolis Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Perikanan
Riza Rahman Hakim
Universitas Muhammadiyah Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Public Health Social Sciences Other

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Effect of addition of growth regulator substance concentration on the growth tetraselmis chuii culture in laboratory scale Diki Restu Setiawan; Ganjar Adhywirawan Sutarjo; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6543

Abstract

Tetraselmis chuii is one type of phytoplankton that can be used as a natural food source. According to FAO-UN (2016) Tetraselmis chuii has 83,400% protein content, 32,500% carbohydrate and 45,700% lipid. Higher than Chaetoceros gracili, Nannochloropsis oculata, Dunaliellatertiolecta and Isochrysis galbana. In cultured phytoplankton nutrient composition of the culture medium was very instrumental in the growth. Microalgae growth with culture can reach optimum by mixing sea water with nutrients that are not contained in the sea water. Related to this, various efforts have been made in an effort to increase the growth of natural feed, both cultivation methods and the addition of various growth substances. One substance that has the potential to increase the growth of natural feed is the use of growth hormones to increase the growth of natural feed, namely through population density, he application form is by adding growth regulators. This research was carried out at the Natural Feed Laboratory at the Center for Aquaculture of Sea Water Fisheries, Situbondo. This study used Completely Randomized Design (CRD) yanang cultured laboratory scale with 7 treatments and 4 repetitions. The treatment in this study was the administration of 2.4-D-Acid Growth Regulating Substances with different doses. The main parameters used include growth measurements by calculating the density and growth rates Tetraselmis chuii. Furthermore, the data were analyzed using ANOVA followed by LSD test. The addition concentration of plant growth regulator effect on cell density and growth rate Tetraselmis chuii culture laboratory scale. Provision of plant growth regulator with konssentrasi 5 ml + 1 ml Walne produce the highest density of 2.323125 cells/ml and a maximum growth rate that is 173 269 cells/ml/day.
Effect of Salinity Differences for Growth Chlorella sp. on the Laboratory Scale Ais Anantama Wibowo; Hariyadi Hariyadi; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6608

Abstract

Chlorella sp. growth is dependent on environmental conditions. One of environmental condition affect the growth of Chlorella sp. is salinity. Salinity can affect the growth of Chlorella sp. because salinity affects the osmosis pressure on the cell wall of Chlorella sp. in the absorption of nutrients in the culture media. This study aims to determine the effect of different salinity on the growth of Chlorella sp. This study was conducted on laboratory scale using experimental methods. This research used Walne fertilizer on culture media were given Chlorella sp. as many as 100,000 cells / ml in every treatment. This study uses 4 treatments and 3 repetitions. The treatment in this study with salinity differences, namely salinity 15 ppt, 20 ppt, 25 ppt and 30 ppt. Chlorella sp. growth data every day obtained from the calculation of the sample Chlorella sp. use haemocytometer. The calculation data obtained is then analyzed using anava one factor data. The results showed that differences in salinity had no effect on the growth of Chlorella sp. The best salinity for the growth of Chlorella sp. is at 15 ppt salinity with the number of Chlorella sp cells. at peak growth as much as 340 × 104 cells / ml, followed by treatment B salinity 20 ppt as much as 339.33 × 104 cells / ml, then treatment D salinity 30 ppt as much as 270.58 × 104 cells / ml, and treatment C 25 salinity as much as 266.83 × 104 cells / ml. Salinity of 15 ppt, 20 ppt, 25 ppt, and 30 ppt can be used for cultivation Chlorella sp.
The effect of different concentrations of spirulina platensis in feed on color enhancement in Goldfish (Carassius Auratus) Sary Astuty Aceh; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.7313

Abstract

Body coloration is one of the most important quality attributes determining the ornamental value of goldfish (Carassius auratus). Since fish are unable to synthesize carotenoids, dietary supplementation with natural carotenoid sources is required to enhance pigmentation. Spirulina platensis is a microalga rich in carotenoids that has the potential to improve fish coloration. Therefore, this study aimed to evaluate the effect of different concentrations of Spirulina platensis meal in feed on the color enhancement of goldfish. The study employed an experimental method using a Completely Randomized Design (CRD) consisting of six treatments with three replications. The treatments included feed supplemented with 0% (control), 1%, 2%, 3%, 4%, and 5% Spirulina platensis meal. Fish were reared for four weeks, and color intensity of the head, body, fins, and tail was assessed periodically. Water quality parameters, including temperature, pH, and dissolved oxygen (DO), were also monitored throughout the experiment. Data were analyzed using analysis of variance (ANOVA) followed by Duncan’s multiple range test. The results showed that dietary supplementation with Spirulina platensis significantly affected body coloration but had no significant effect on the coloration of the head, fins, and tail. The highest body color intensity was observed in fish fed diets containing 3% Spirulina platensis, with an average color score of 56.55 ± 0.59, significantly higher than the control treatment. Water quality remained within suitable ranges for goldfish culture, with temperatures of 23–26°C, pH 7, and DO ranging from 6.7 to 9.9 mg/L. In conclusion, supplementation of 3% Spirulina platensis meal in feed effectively enhances the body coloration of goldfish and can be recommended as a natural pigment source in ornamental fish culture.
PEMBERDAYAAN PEMBUDIDAYA IKAN DESA PARANGARGO MELALUI DISEMINASI PAKAN MANDIRI DAN TEKNOLOGI RAS BERBASIS SOLAR CELL Yus Mochamad Cholily; Machmud Effendy; Rindya Fery Indrawan; Subairi Subairi; Riza Rahman Hakim; Beti Istanti Suwandayani
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 7 No. 4 (2026): Vol. 7 No. 4 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v7i4.62914

Abstract

Sektor perikanan budidaya di Desa Parangargo menghadapi kendala tingginya biaya pakan komersial yang mencapai 60–70% dari biaya produksi, penurunan kualitas air kolam akibat penumpukan limbah organik, serta tingginya beban biaya listrik konvensional. Program pengabdian masyarakat ini bertujuan untuk meningkatkan kemandirian dan efisiensi operasional pembudidaya ikan melalui integrasi diseminasi pakan mandiri dan teknologi Recirculating Aquaculture System (RAS) berbasis Solar Cell. Kegiatan ini dilaksanakan menggunakan pendekatan Participatory Action Research (PAR) yang meliputi lima tahap utama: pendidikan masyarakat, pelatihan dan praktik percontohan pembuatan pakan serta sistem RAS-Solar Cell, difusi Ipteks melalui penyerahan peralatan, serta pendampingan berkelanjutan. Hasil kegiatan menunjukkan bahwa penerapan pakan mandiri berbahan lokal berhasil menekan biaya pakan sebesar 37% dengan penurunan Feed Conversion Ratio (FCR) menjadi 1,28. Penggunaan energi surya 200 WP mampu memotong biaya listrik pompa dan aerator hingga 100%, serta mempertahankan kualitas air kolam yang berdampak pada peningkatan tingkat kelangsungan hidup ikan (Survival Rate) sebesar 91,5%. Secara ekonomi, kelayakan usaha mitra meningkat signifikan ditunjukkan oleh kenaikan nilai Revenue to Cost Ratio (R/C Ratio) dari 0,83 menjadi 2,26. Penerapan solusi terpadu ini sangat penting dalam mewujudkan kemandirian ekonomi, efisiensi energi, dan keberlanjutan usaha akuakultur perdesaan
Masculization of Rainbow Fish Boesmani (Melanotenia Boesmani) through immersion larvae use Extract Propolis Honeybees with long different times Aditya satriani; Riza Rahman hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 7 No. 1 (2024): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v7i1.6014

Abstract

Boesemani rainbowfish (Melanotaenia boesemani) is a freshwater ornamental fish with high economic value and is endemic to Papua Island. This species is widely favored due to its distinctive morphology and unique coloration, characterized by an elongated and laterally flattened body, with bright blue coloration toward the head and bright orange coloration toward the caudal region. Male Boesemani rainbowfish are particularly preferred because of their more attractive and varied coloration. Masculinization is a method used to increase the production of male fish. One natural material that can be applied for masculinization is honeybee propolis extract. This study was conducted at the Fish Reproduction Laboratory, Faculty of Fisheries and Marine Science, Brawijaya University, Malang, from December 2017 to January 2018. An experimental method using a Completely Randomized Design (CRD) was applied with four treatments and a control. The treatments consisted of immersion durations of 10, 12, 14, and 16 hours using a dose of 1 ppm. Data were analyzed using analysis of variance (ANOVA), followed by the Least Significant Difference (LSD) test. The main parameters were the percentage of male fish and survival rate, while supporting parameters included growth rate and water quality. The highest percentage of males was obtained in treatment B (12 hours), reaching 62.35%, compared with 45.45%, 47.78%, 39.49%, and 11.82% in treatments A, C, D, and control, respectively. Survival rates ranged from 42.22% to 90%, while growth rates ranged from 0.0198 to 0.0211 g. Water quality remained within the observed ranges. The results indicate that immersion using propolis extract significantly influenced masculinization when applied at an optimal duration.
ESTIMATION OF LEAF-LITTER DECOMPOSITION RATE Avicennia sp. ON THE NUTRIENTS CONTENT IN WONOREJO MANGROVE AREA, SURABAYA Hariyadi Hariyadi; Riza Rahman Hakim; Ruhul Jihadil Fitri
Vol 15 No 2 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i2.1457

Abstract

The ecosystems of mangrove are one of the unique coastal ecosystems which have ecological and socio-economic functions. Mangroves have a significant role in supporting fisheries resources. Leaf-litter is a nutrient contributor released to the sea water and is functioned by aquatic biota both in the marine and estuary. The method used in this study is purposive random sampling method which refer to the category based on mangrove density. The average production of mangrove litter Avicennia sp, for 30 days at station I was 1.04 g/m²/ day, station II was 1.20 g/m²/day, station III was 0.75 g/m²/day. The leaf-litter decomposition rate at station I, experienced a decomposition process of 65%, at station II at 62.33%, and station III at 69.42%. The content of nitrogen (N) and fosfor (P) nutrients at station I is an average of N 0.74% and P 0.07%, station II is N 0.76% and P 0.05%, station III is N 0.74% and P 0 , 07%. The total amount of nutrients released in the Mangrove Information Center forest area, Wonorejo - Surabaya is nitrogen (N) 443.81 kg/m²/year and phosphor (P) 34.103 kg/m²/year.
Co-Authors Aditya satriani Agista Tsani Untsa Ahmad Jumarding Ahmad Rusyda Hafidhi Albasa Ais Anantama Wibowo Albasa, Ahmad Rusyda Hafidhi Alisatul Amalia Andriyanto Andriyanto Anis Zubaidah Anis Zubaidah Anis Zubaidah Arfida Boedirochminarni Ari Wahyu Darmawan Arinta Agnie Dewantari Artadana, Ida Bagus Made Astuti, Triana Indri Azhari Azhari Bahiyya, Choridatul Budi Setyono Choridatul Bahiyya Dahlia, Lisma Darmawan, Ari Wahyu David Hermawan David Hermawan David Hermawan Dewantari, Arinta Agnie Dianita Wijayanti Diki Restu Setiawan Ditya, Yoga Candra Dony Prasetyo Erni Indrawati Felix Miranda Fitri, Ruhul Jihadil Ganjar Adhywirawan Sutarjo Ganjar Adhywirawan Sutarjo Gema Wahyudewantoro, Gema Gitra - Yoga Hany Handajani Hariyadi Hariyadi Hariyadi Hariyadi Hariyadi Hariyadi Hariyadi, Hariyadi Hermawan, David Hidayat, Reyhan Rafisyah Indrawan, Rindya Fery Irzal Effendi Ismi, Yuliani Jamhari Jamhari Kholista, Marry Ann Lailiyah, Ummi Badriyatul Lili Zalizar Lisma Dahlia M. Tang Machmud Effendy Machmud Effendy Machmud Effendy Marry Ann Kholista Maulidiya, Nurfitri Mega Fatimah Rosana Meishela Dwi Lawidya Miranda, Felix Moh. Nurhuda Mustaqim Mustaqim, Mustaqim Novin Farid Styo Wibowo Nur Subeki Nurfitri Maulidiya Nurhuda, Moh. Olivia Agustin Olivia Agustin Puji Sumarsono Rasyidi, Emil Salim Ridwan Ridwan Rindya Fery Indrawan Rini Mastuti Rogerio Lainus Tilman Sarmento Ruhul Jihadil Fitri Sary Astuty Aceh Soni Andriawan Subairi Subairi Suryadewi, Nindya Suwandayani, Beti Istanti Triana Indri Astuti Untsa, Agista Tsani Utomo, Waskito Dwi Wahyu Parmana Saputra Warkoyo Warkoyo Waskito Dwi Utomo Wenny Novita Sari Worowirastri E., Dyah Yohana Agustina Yudhistyan Hanif Rahmawan Yuliani Ismi Yus Mochamad Cholily