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All Journal Journal of Environmental Engineering and Sustainable Technology Jurnal Pengabdian Magister Pendidikan IPA Barakuda 45
Mardika, Hanisya Putri Kania
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Agriculture, Biological Sciences & Forestry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Mechanical Engineering

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HOTATE SCALLOP (MIZUHOPECTEN YESSOENSIS) FARMING USING MIMIZURI AT SUZUKI TOSHIHIKO TOYOURA COMPANY, HOKKAIDO, JAPAN Burhanudin, Burhanudin; Mardika, Hanisya Putri Kania; Sujadi, Frentina Murti; Anjaini, Jefri
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

Japan is an archipelagic country with numerous marine commodities of high economic value. One of the most popular marine products among the Japanese population is the Hotate scallop (Mizuhopecten yessoensis). Hotate scallops are a type of shellfish that thrive in low-temperature environments, with their natural habitat commonly found in the northern seas of Japan, particularly in Hokkaido. Suzuki Toshihiko Company, located in Toyoura, Hokkaido Prefecture, is one of the companies engaged in the Hotate scallop industry. This study was conducted to examine the Mimizuri cultivation technique used by Suzuki Toshihiko Company. The study are divided into 3 methods ; the first method include observation; the second active participation, and the third method interview to collect primary data, while secondary data were obtained from relevant literature. The Mimizuri technique is a method of cultivating Hotate scallops by attaching them to a rope and raising them in the open sea. This technique involves several stages, starting with seed collection, seed sorting, the mimizuri stage, and finally the large-scale harvesting stage
Utilization of Mangosteen Extract to Enhance the Masculinization of Striped Snakehead (Channa striata) Fingerlings Mardika, Hanisya Putri Kania; Pramono, Taufik Budhi; Afiyah, Novia Nurul; Putra, Joni Johanda; Larasati, Lorichika Gustinda; Rohmah, Siti Nur
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 7 No 2 (2025): November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v7i2.690

Abstract

Aquaculture technology to increase productivity includes sex reversal or masculinization. Masculinization of snakehead fish (Channa striata) is essential to balance the male sex ratio for sustainable aquaculture. One approach is the use of natural compounds to reduce dependence on synthetic hormones that are less environmentally friendly. Natural substances such as mangosteen peel extract (Garcinia mangostana) contain aromatase inhibitors. This study aimed to determine the optimal dosage of mangosteen peel extract for inducing sex reversal in snakehead fish. Two-week-old fry were immersed in different treatments (control 0 g/L, 0.5 g/L, 0.7 g/L, and 0.9 g/L) for 4 hours and reared for 2 months. Gonads were examined microscopically using aceto-carmine staining. Results showed that the highest male proportion was obtained at 0.9 g/L, while the highest survival rate was recorded at 0.7 g/L. The Kruskal–Wallis test (H=7.64; p=0.054) indicated no significant differences among treatments in male proportion. The Mann–Whitney U test (p=0.077) between control and each treatment confirmed that formal differences were not significant, although a trend of increased male proportion was observed across all treatments. One-way ANOVA (F=16.72; p=0.0008) demonstrated that treatment doses significantly affected survival. Tukey HSD revealed that all treatments differed significantly from control (p<0.05), while no significant differences occurred among treatment doses (p>0.05). In conclusion, doses of 0.5–0.9 g/L were effective in promoting masculinization while maintaining optimal survival in snakehead fish.
Implementasi Inovasi Probiotik Berbasis Limbah Pasar untuk Meningkatkan Produktivitas Ikan Nila di Kelompok Krido Yuwono Mina Padi Technopark, Panembangan, Banyumas Sujadi, Frentina Murti; Anjaini, Jefri; Simangunsong, Tohap; Setiyaningsih, Lilik; Mardika, Hanisya Putri Kania; Setyawan, Agung Cahyo; Sukardi, Purnama; Kusuma, Baruna; Nurhabib, Asro; Marnani, Sri; Harvinda, Yohanes
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 4 (2025): Oktober-Desember 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i4.13355

Abstract

The probiotic innovation training programme based on market waste implemented at the Krido Yuwono Mina Padi Technopark Group aims to increase tilapia productivity and farming efficiency through the use of organic waste as raw material for probiotics. This training involves participants in the production of probiotics through the fermentation of market waste using lactic acid bacteria starters. The evaluation results show an increase in tilapia productivity of around 15-20% with better feed efficiency and a reduction in ammonia levels in pond water, which was previously a major problem in maintaining fish health. The community involved in this programme also increased their confidence in managing tilapia farming efficiently and received new knowledge that can reduce operational costs. This programme has achieved significant social and economic impacts and is expected to develop into a sustainable community empowerment model in the field of aquaculture and support more environmentally friendly waste management.
Co-Authors Afiyah, Novia Nurul Burhanudin Burhanudin Frentina Murti Sujadi Kusuma, Baruna Larasati, Lorichika Gustinda Lilik Setiyaningsih Nurhabib, Asro Purnama Sukardi Putra, joni Johanda Rohmah, Siti Nur Setyawan, Agung Cahyo Sri Marnani Taufik Budhi Pramono Tohap Simangunsong Yohanes Harvinda