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All Journal Jurnal Kelautan Tropis Jurnal Ilmiah Ecosystem Jurnal Dedikasi Journal of Aquaculture and Enviroment Seminar Nasional Pengabdian Kepada Masyarakat INOVASI: Jurnal Hasil Pengabdian Masyarakat JURNAL RISET DIWA BAHARI Jurnal Perikanan
Sri Mulyani
Jurusan Budidaya Perairan, Fakultas Pertanian, Universitas Bosowa.
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Assessing the Global Cultivation Practices of Kappaphycus alvarezii: A Comprehensive Review of Growth Dynamics, Nutrient Management, and Biochemical Composition Sri Mulyani
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.95

Abstract

Kappaphycus alvarezii is a crucial species for carrageenan production, widely used in various industries. This review aims to synthesize global research on the cultivation of K. alvarezii, focusing on growth dynamics, nutrient management, and biochemical composition. Studies show that growth rates are significantly influenced by cultivation methods, such as longline, raft farming, and Integrated Multi-Trophic Aquaculture (IMTA), each offering distinct advantages in terms of yield and ecological sustainability. Nutrient management, particularly nitrogen and phosphorus level, plays a critical role in optimizing both biomass and carrageenan quality. The use of biostimulants and fertilizers has been found to enhance growth and biochemical properties, yet careful nutrient control is essential to prevent negative environmental impacts such as eutrophication. Genetic diversity, particularly through the selection of wild versus cultivated strains, is another important factor in farm resilience. Wild strains provide greater environmental adaptability and disease resistance, while selected strains typically offer faster growth and higher yields. However, the reduced genetic diversity in clonal farming raises concerns about long-term sustainability. Research gaps identified include the need for long-term studies on the sustainability of farming techniques, particularly in the context of climate change, and more extensive investigations into the ecological and economic benefits of IMTA systems. Future research should focus on integrating biological, ecological, and economic aspects to optimize K. alvarezii farming and enhance its contribution to the blue economy
Pengaruh Berat Bibit Awal Terhadap Dinamika Metabolik Pada Gracilaria Verrucosa Sri Muliani Wahdaningsih; Sri Mulyani; Suryawati Salam
Journal of Aquaculture and Environment Vol. 8 No. 2 (2026): Journal of Aquaculture and Enviroment Juni 2026
Publisher : Postgraduate Bosowa University Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/jae.v8i2.6454

Abstract

Penelitian ini bertujuan untuk mengeksplorasi hubungan antara berat bibit awal dan rasio RNA/DNA pada Gracilaria verrucosa, rumput laut yang bernilai ekonomi tinggi. Dengan menggunakan Desain Acak Lengkap (CRD), empat berat bibit awal yang berbeda (50g, 75g, 100g, dan 125g) diuji, dan rasio RNA/DNA diukur pada akhir periode budidaya selama 49 hari. Hasil menunjukkan bahwa bibit yang lebih ringan (50 g/ikat) memiliki rasio RNA/DNA tertinggi, yang mengindikasikan aktivitas metabolik yang lebih tinggi, sementara bibit yang lebih berat (100 g/ikat dan 125 g/ikat) menunjukkan penurunan rasio RNA/DNA, mengindikasikan penurunan fleksibilitas metabolik. Temuan ini menyoroti pada bibit yang lebih besar, terjadi peralihan alokasi energi beralih menuju pemeliharaan daripada proses metabolik. Variabilitas pada bibit yang lebih berat (125 g/ikat) menekankan perlunya penelitian lebih lanjut untuk memahami faktor-faktor yang mendorong perbedaan ini. Penelitian ini berkontribusi pada praktik akuakultur dengan menunjukkan bagaimana berat bibit mempengaruhi pertumbuhan dan aktivitas metabolik. Memahami hubungan ini dapat mengarah pada manajemen bibit yang lebih efisien dan hasil budidaya yang lebih baik. Penelitian lebih lanjut perlu mengeksplorasi interaksi faktor lingkungan dan variasi genetik dengan berat bibit untuk mengoptimalkan strategi budidaya. This research aims to explore the relationship between initial seed weight and RNA/DNA ratio in Gracilaria verrucosa, a seaweed with high economic value. Using a Completely Randomized Design (CRD), four different initial seed weights (50 g, 75 g, 100 g, and 125 g) were tested, and the RNA/DNA ratio was measured at the end of the 49-day cultivation period. The results showed that lighter seedlings (50 g/bundle) had the highest RNA/DNA ratio, indicating higher metabolic activity, while heavier seedlings (100 g/bundle and 125 g/bundle) showed a decrease in the RNA/DNA ratio, indicating a decrease in metabolic flexibility. These findings highlight that in larger fry, there is a shift in energy allocation towards maintenance rather than metabolic processes. The variability in heavier fry (125 g/batch) underscores the necessity for additional research to elucidate the factors influencing these disparities. This research contributes to aquaculture practices by showing how seedling weight affects growth and metabolic activity. Understanding this relationship can lead to more efficient seedling management and better cultivation results. Further research is needed to explore the interaction of environmental factors and genetic variation with seedling weight to optimize cultivation strategies.
PENGARUH SUBSTRAT BERBEDA TERHADAP PERTUMBUHAN, KANDUNGAN AGAR, DAN SERAPAN KARBON Gracilaria verrucosa Muliati Sehe; Nur Asia Umar; Sri Mulyani
Journal of Aquaculture and Environment Vol. 8 No. 2 (2026): Journal of Aquaculture and Enviroment Juni 2026
Publisher : Postgraduate Bosowa University Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/jae.v8i2.6455

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh jenis substrat berbeda terhadap laju pertumbuhan, kandungan agar, dan serapan karbon rumput laut Gracilaria verrucosa di tambak. Metode penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan tiga perlakuan substrat yaitu pasir (100%), lumpur (100%), dan campuran pasir-lumpur (50:50), masing-masing dengan tiga ulangan. Parameter yang diukur mencakup pertumbuhan mutlak, laju pertumbuhan spesifik, kandungan agar, dan serapan karbon. Hasil menunjukkan bahwa perlakuan substrat pasir-lumpur memberikan pertumbuhan tertinggi sebesar 108 g dan laju pertumbuhan spesifik sebesar 2,83% per hari. Namun, tidak terdapat perbedaan signifikan antar perlakuan terhadap kandungan agar dan serapan karbon (P > 0,05). Temuan ini menunjukkan bahwa substrat campuran lebih efektif meningkatkan pertumbuhan biomassa, tetapi tidak secara signifikan memengaruhi kualitas biokimia. Penelitian ini memberikan dasar penting dalam pengelolaan substrat budidaya rumput laut untuk efisiensi produksi dan kontribusi lingkungan melalui penyerapan karbon. This research aims to analyze the effect of different substrate types on the growth rate, agar content, and carbon uptake of Gracilaria verrucosa seaweed in ponds. The research method used a completely randomized design (CRD) with three substrate treatments, namely sand (100%), mud (100%), and a sand-mud mixture (50:50), each with three replicates. The parameters measured included absolute growth, specific growth rate, agar content, and carbon uptake. The results indicated that the sand-mud substrate treatment provided the highest growth of 108 g and a specific growth rate of 2.83% per day. However, there were no significant differences between treatments in agar content and carbon uptake (P > 0.05). These findings indicate that mixed substrates are more effective in increasing biomass growth but do not significantly affect biochemical quality. This study provides an important basis for the management of seaweed cultivation substrates for production efficiency and environmental contribution through carbon sequestration.
ANALISIS ENRICMENT MINYAK CUMI PADA ROTIFER DAN ARTEMIA DENGAN DOSIS BERBEDA PERTUMBUHAN DAN SINTASAN MEGALOPA RAJUNGAN Portunus pelagicus Risymayanti Risymayanti; Sutia Budi; Sri Mulyani
Journal of Aquaculture and Environment Vol. 8 No. 2 (2026): Journal of Aquaculture and Enviroment Juni 2026
Publisher : Postgraduate Bosowa University Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/jae.v8i2.6779

Abstract

Tujuan dari penelitian adalah enganalisis pengaruh pemberian dosis yang berbeda dari enrichment minyak cumi pada Rotifer dan Artemia terhadap pertumbuhan dan sintasan megalopa rajungan. Membandingkan efek dosis minyak cumi yang diperkaya pada Rotifer dan Artemia terhadap pertumbuhan dan sintasan megalopa rajungan. Penelitian ini dilakukan di unit pembenihan Rajungan di Balai Perikanan Budidaya Air Payau Takalar yaitu pada bulan Juni sampai Juli 2025. Analisis knadungan minyak cumi dilakukan di Laboratorium Unhas. Penelitian ini disusun menggunakan desain Rancangan Acak Lengkap. Berdasarkan hasil yang diperoleh, penelitian menunjukkan bahwa Enricment Artemia dan Rotifer dengan minyak cumi mampu meningkatkan pertumbuhan dan sintasan megalopa rajungan. Dosis 0,6 g/L memberikan hasil terbaik pada seluruh parameter tanpa menimbulkan efek negatif, sedangkan dosis yang terlalu tinggi justru menurunkan efisiensi. Penggunaan minyak cumi tidak menurunkan kualitas air, sehingga aman diterapkan dalam sistem pembenihan rajungan. The purpose of this study was to analyze the effect of different doses of squid oil enrichment on Rotifer and Artemia on the growth and survival of megalopa crabs. Comparing the effects of squid oil enriched doses on Rotifer and Artemia on the growth and survival of megalopa crabs. This study was conducted at the Crab hatchery unit at the Takalar Brackish Water Aquaculture Center from June to July 2025. Analysis of squid oil content was carried out at the Unhas Laboratory. This study was arranged using a Completely Randomized Design. Based on the results obtained, the study showed that Artemia and Rotifer enrichment with squid oil was able to increase the growth and survival of megalopa crabs. A dose of 0.6 g/L gave the best results on all parameters without causing negative effects, while too high a dose actually reduced efficiency. The use of squid oil did not reduce water quality, so it is safe to be applied in the crab hatchery system.
Co-Authors A. Gusti Tantu Agus Wijayanto Agustang Agustang Annisa Soenarto Aqmal, Amal Azhariah Syarif Batara Surya, Batara Bobby Hitijahubessy Dedi Hermawan Donata Peni Erni Indrawati Fahara Azza Azizah Fatmawati Fatmawati Fatmawati Fatmawati Frice Padawan Hadijah Hadijah Hainun Putri Handayani Hasan Basri Hasni Hasni Herimisniaty Herimisniaty Ikbal Ikbal Iman Djuniawal Indra Cahyono Indra Cahyono Irmawati Malkab Jaqueline Kenedi jumain - Kamariah Kamariah Khairiman Khairiman Khairiman Khairiman Mardiana Mardiana Marwan Marwan Marwan Marwan Maximus M Kayame Melianti Tasik Mitra Mandasari Muh. Hatta Muh. Kafrawi Yunus Muh. Saleh Pallu Muliati Sehe Nur Asia Umar Nurfadila Nurfadila Paulus Lebang Petrus Matius Sroyer Rasyidi, Emil Salim Reskianto Pakasi Risymayanti Risymayanti Rita A. Kramandondo Rosdiana Rosdiana Ruslan, Muhlis Selopes Menanti Sitti Warda Ningsi Sri Muliani Wahdaningsih Suryanti Suryanti Suryawati Salam Suryawati Salam Suryawati Salam Sutia Budi Sutia Budi Sutia Budi Sutia Budi Syamsul Alam Ali Syamsul Bahri Vivi Imrona Fardiyah Warda Ningsi Zulkifli Makkawaru