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Diamahesa, Wastu Ayu
Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Mataram
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Comparative Analysis of Chlorella vulgaris Cell Densities in Different Culture Systems Shalehah, Atiatun; Diamahesa, Wastu Ayu
Jurnal Media Akuakultur Indonesia Vol 5 No 1 (2025): Indonesian Journal of Aquaculture Medium
Publisher : Program Studi Budidaya Perairan Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/mediaakuakultur.v5i1.6920

Abstract

Chlorella vulgaris is a cosmopolitan microalga with high nutritional value, widely utilized in aquaculture, pharmaceuticals, and biofuel production. This study evaluated its growth performance across three culture scales (laboratory bottle, carboy, and intermediate concrete tank) at BPBAP Situbondo from February to June 2024. The research aimed to analyze the influence of scale on biomass productivity and identify critical environmental factors. Results demonstrated significant growth variations among scales. The laboratory bottle (5 L) achieved the highest cell density (54 × 10⁶ cells/mL) on day 11, attributed to optimal light distribution and stable temperature (30–33°C). Carboy cultures (10 L) showed moderate productivity (31 × 10⁶ cells/mL), while the intermediate scale (700–800 L) yielded the lowest density (6.8 × 10⁶ cells/mL) due to light limitation and suboptimal aeration. Water quality parameters remained stable across all systems, with pH 8.0, salinity 30–34 ppt, and uniform light intensity (500 lux). Statistical analysis confirmed significant differences in growth rates (p < 0.05), highlighting the inverse relationship between scale size and productivity. The study concludes that small-scale systems offer superior environmental control for C. vulgaris cultivation. For mass production, design improvements—such as enhanced aeration, closed photobioreactors, and artificial lighting—are recommended to replicate laboratory-scale efficiency. These findings provide actionable insights for optimizing microalgae culture systems in aquaculture feed production.
Effectiveness of Different Binders in Improving Feed Stability and Survival Rate of Mud Crab (Scylla sp.) Fed Trash Fish-Based Diet Diamahesa, Wastu Ayu; Abidin, Zaenal; Lestari, Dewi Putri; Alim, Sahrul; Rahmadani, Thoy Batun Citra; Mutiara, Ni Luh
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9896

Abstract

Feed stability is crucial in aquaculture to minimize nutrient loss and ensure optimal growth of cultured species. This study evaluated the effects of different binders (carboxymethyl cellulose/CMC, wheat gluten, tapioca flour, and Gracilaria sp. flour) at 3% and 5% concentrations, processed via hot and cold mixing methods, on feed stability and survival of mud crab (Scylla spp.). Conducted over 45 days, the research involved feed formulation, stability testing in seawater (30 ppt salinity), and a 30-day feeding trial in a recirculating aquaculture system. Results showed that binder type and processing method significantly influenced feed integrity, with CMC 5% + hot mixing exhibiting the highest stability (96.99% retention after 240 minutes), while tapioca 5% + hot mixing degraded fastest. All formulations met the ≥70% stability threshold after 120 minutes, confirming suitability for aquaculture. The feeding trial revealed 100% survival across all treatments, indicating that binder selection can prioritize physical stability without compromising crab health. Hot processing consistently enhanced binder performance, particularly for polysaccharide-based CMC and Gracilaria sp. flour. These findings suggest CMC 5% (hot) as the optimal binder for durable mud crab feed, whereas tapioca requires careful concentration control. The study provides practical insights for feed development, though further replicated trials under varied farming conditions are recommended to validate commercial applicability. This research contributes to sustainable aquaculture by improving feed efficiency and reducing waste in mud crab production.
Enhancing ornamental marine fish farming through advanced water management with protein skimmers in Lembar, West Lombok Affandi, Rangga Idris; Azhar, Fariq; Rahmadani, Thoy Batun Citra; Fitria, Syawalina; Agustin, Pradita Ayu; Setyono, Bagus Dwi Hari; Diamahesa, Wastu Ayu; Diniariwisan, Damai; Sumsanto, Muhammad; Abidin, Zaenal
Penamas: Journal of Community Service Vol. 5 No. 3 (2025): Penamas: Journal of Community Service
Publisher : Nur Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/penamas.v5i3.2021

Abstract

The coastal area of Lembar District, West Lombok, has great potential in cultivating marine ornamental fish such as clownfish and blue tang, but water pollution due to Lembar Port activities has caused a decline in water quality and low fish survival. This community service aims to increase the capacity of farmers in managing water quality through the application of protein skimmer technology, a tool that can remove dissolved organic particles from seawater. The activity was carried out in six stages, namely location survey, socialization, training, technology application, mentoring and evaluation, and program sustainability. The results of the activity showed that partners experienced an increase in understanding of the importance of water quality and skills in using protein skimmers. In addition, the condition of the cultivation environment became more stable and supported the growth of ornamental fish. With a participatory approach and the application of appropriate technology, this activity was able to provide a positive impact. This program is expected to be a pilot model for other coastal areas in the development of sustainable marine ornamental fish cultivation.
Pengaruh Pemberian Rumput Laut yang Berbeda terhadap Pertumbuhan dan Kelangsungan Hidup Kerang Abalon (Haliotis squamata) Devi Wahyuni Cahyani; Muhammad Junaidi; Wastu Ayu Diamahesa
Jurnal Ilmiah Mahasiswa Agrokomplek Vol. 4 No. 2 (2025): Jurnal Ilmiah Mahasiswa Agrokomplek
Publisher : Fakultas Pertanian Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jima.v4i2.7645

Abstract

Indonesia memiliki garis pantai terpanjang di dunia, yakni sekitar 81.000 km. Salah satu jenis ikan yang banyak diminati dalam budidaya adalah abalon (Haliotis squamata) yang memiliki nilai ekonomis tinggi dan permintaan pasar yang tinggi. Namun, budidaya abalon masih menghadapi beberapa kendala, seperti keterbatasan sumber daya manusia dan teknologi, sulitnya mendapatkan benih berkualitas, masa budidaya yang panjang, serta manajemen pakan yang kurang memadai. Di antara kendala tersebut, manajemen pakan merupakan salah satu faktor penentu keberhasilan budidaya abalon. Pakan memegang peranan penting, terutama sebagai sumber energi untuk mendukung kelangsungan hidup dan pertumbuhan abalon. Penelitian ini menggunakan metode eksperimen yang terdiri dari lima perlakuan pemberian pakan dan tiga kali ulangan, yaitu P1 (Ulva sp.), P2 (Kappaphycus alvarezii), P3 (Gracilaria sp.), P4 (Gracilaria sp. + Ulva sp.), dan P5 (Gracilaria sp. + Kappaphycus alvarezii). Hasil terbaik diperoleh pada perlakuan P4, yaitu kombinasi Gracilaria sp. dan Ulva sp. secara signifikan meningkatkan kinerja pertumbuhan. Perlakuan ini menghasilkan pertambahan berat tertinggi yakni 2,62 gram, pertambahan panjang 0,64 cm, laju pertumbuhan spesifik (SGR) 2,05% per hari, efisiensi pemanfaatan pakan 88%, total konsumsi pakan 161,26 gram, rasio konversi pakan (FCR) 1,14, dan tingkat kelangsungan hidup 85%.
Optimizing Tilapia Hatchery Systems with Good Fish Breeding Practices (CPIB) in Lingsar District, West Lombok Affandi, Rangga Idris; Abidin, Zaenal; Scabra, Andre Rachmat; Chen, Peter; Setyono, Bagus Dwi Hari; Dwiyanti, Septiana; Alim, Sahrul; Sumsanto, Muhammad; Diamahesa, Wastu Ayu; Asri, Yuliana
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 3 (2025): Juli-September 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i3.12409

Abstract

Embung Pas Hamlet in Sigerongan Village, Lingsar District, West Lombok Regency, has quite large aquaculture potential, especially for tilapia commodities. However, in practice, tilapia fish breeder still faces various obstacles such as the less-than-optimal productivity of tilapia fry produced. Lack of understanding of the standards for Good Fish Breeding Practices (CPIB) is one of the main factors that hinders increased productivity and sustainability of hatchery businesses. This community service activity aims to improve the understanding and skills of tilapia fish breeder in Embung Pas Hamlet in applying the principles of CPIB. The implementation method includes counseling, discussion, and direct assistance with a participatory and demonstrative approach. Evaluation is carried out to measure changes in participants' knowledge and attitudes before and after the activity. The results of the activity showed a significant increase in understanding and technical skills of breeding related to aspects of biosecurity, water quality management, proper use of feed, and management of aquaculture waste. The participants also showed enthusiasm and commitment to implementing CPIB in their daily activities. This activity also encourages collective awareness of the importance of quality standards in sustainable hatchery. In conclusion, CPIB training and mentoring have a positive impact on increasing the capacity of fish breeder in Embung Pas Hamlet and have the potential to become a model for sustainable and competitive fisheries community empowerment.
Peningkatan Kapasitas Manajemen Keuangan Pokdarwis Bagek Kembar Desa Cendi Manik melalui Pelatihan Literasi dan Digitalisasi Akuntansi Usaha Mikro Diamahesa, Wastu Ayu; Dwi Hari Setyono, Bagus; Hak, Muhammad Bai`ul; Badrun; Aula Husnul Fajri
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 3 (2025): Juli-September 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i3.12828

Abstract

Pengabdian kepada masyarakat ini bertujuan meningkatkan literasi dan keterampilan manajemen keuangan kelompok sadar wisata (Pokdarwis) Bagek Kembar di Desa Cendi Manik, Kecamatan Sekotong. Pelatihan diberikan secara partisipatif kepada 15 peserta dari berbagai profesi dengan pendekatan ceramah interaktif, diskusi kelompok, simulasi kasus, dan praktik penggunaan aplikasi keuangan digital. Indikator keberhasilan diukur dengan pre-test dan post-test pada tiga aspek utama: pencatatan keuangan, pemisahan keuangan pribadi dan usaha, serta penyusunan laporan sederhana. Hasil pelatihan menunjukkan peningkatan signifikan pada seluruh aspek, di mana rata-rata skor pemahaman dasar pencatatan keuangan naik dari 2,27 ke 3,80; pemisahan keuangan dari 3,20 ke 4,40; dan laporan keuangan dari 2,33 ke 4,13. Pelatihan berhasil menghadirkan perubahan perilaku dalam pencatatan yang lebih akuntabel dan kesiapan migrasi ke sistem digital. Temuan ini penting sebagai fondasi pengembangan ekonomi wisata desa yang lebih profesional, transparan, dan berkelanjutan di Desa Cendi Manik.
BIMBINGAN TEKNIS PENANGANAN PASCA PANEN BULU BABI DI KOPERASI PRIMA NUSANTARA: BIMBINGAN TEKNIS PENANGANAN PASCA PANEN BULU BABI DI KOPERASI PRIMA NUSANTARA Asri, Yuliana; Hizbulloh, Lalu; Affandi, Rangga Idris; Lumbessy, Salnida Yuniarti; Scabra, Andre Rahmat; Diamahesa, Wastu Ayu; Mulyani, Laily Fitriani; Alim, Sahrul; Lestari, Dewi Putri
Jurnal Pepadu Vol 6 No 3 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/7n54x771

Abstract

Sea urchins are a highly nutritious and economically valuable fishery product. In West Nusa Tenggara (NTB), particularly in Lombok, the public is still largely unaware of the benefits and market value of sea urchins in international markets such as Japan and Korea. Sea urchin gonads are consumed by Koreans and Japanese, and their high nutritional content is believed to improve health performance. However, there are obstacles in the sea urchin market development is the lack of proper standard operating procedures in post-harvest handling. Appropriate and standardized post-harvest techniques are not yet widely known or disseminated among sellers and sea urchin business actors. Prima Nusantara Cooperative is one of the cooperatives that supplies fishery products, including sea urchins, to exporting companies. Based on this, the current community service activity was conducted at Prima Nusantara Cooperative in East Lombok, targeting the cooperative staff. The aim is to provide both theoretical socialization and hands-on training to enhance the staff’s knowledge and skills in post-harvest handling of sea urchins. Through this technical guidance, it is expected that the quality of sea urchin products sold to exporters will improve and be more competitive in the Japanese and Korean markets. The method used during the technical training included presentation of materials on proper sea urchin handling procedures, followed by field practice involving sea urchin sampling, hands-on demonstrations, and direct mentoring through each stage of the process. The post-harvest handling stages included harvesting (collection), cleaning, shell breaking, rinsing, weighing, packaging, and storage at low temperatures.
PELATIHAN BUDIDAYA NILA KOLAM TERPAL DI DESA GRIMAK, LOMBOK BARAT UNTUK MENCEGAH STUNTING Muahiddah, Nuri; Azhar, Fariq; Affandi, Rangga Idris; Diniariwisan, Damai; Diamahesa, Wastu Ayu
Jurnal Pepadu Vol 5 No 3 (2024): Jurnal PEPADU
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v5i3.5909

Abstract

Masalah stunting masih menjadi tantangan serius di Desa Grimak Indah, Lombok Barat, dengan prevalensi yang cukup tinggi di kalangan anak-anak. Upaya pencegahan stunting melalui peningkatan asupan gizi sangat diperlukan, salah satunya melalui pemanfaatan sumber protein yang terjangkau dan mudah diakses oleh masyarakat setempat. Oleh karena itu, program pengabdian ini bertujuan untuk memberikan pelatihan budidaya ikan nila dengan menggunakan kolam terpal sebagai solusi praktis dan ekonomis untuk meningkatkan ketahanan pangan dan asupan protein di desa tersebut. Kegiatan pelatihan meliputi berbagai aspek teknis budidaya ikan nila, seperti persiapan dan pembuatan kolam terpal, pemilihan bibit unggul, teknik pemberian pakan, serta pengelolaan kualitas air dan kesehatan ikan. Selain itu, program ini juga memberikan edukasi mengenai pentingnya konsumsi protein hewani dalam pencegahan stunting, serta bagaimana memanfaatkan hasil budidaya secara optimal. Hasil dari pelatihan ini diharapkan dapat meningkatkan pengetahuan dan keterampilan masyarakat Desa Grimak Indah dalam budidaya ikan nila, sehingga dapat memperkuat ketahanan pangan keluarga dan berkontribusi dalam upaya pencegahan stunting di wilayah tersebut. Keberhasilan program ini diukur melalui peningkatan jumlah kolam terpal yang dibangun dan produksi ikan nila yang stabil, serta peningkatan kesadaran masyarakat akan pentingnya asupan gizi yang seimbang.
The Effect of Coffee Grounds Extracts on The Nutrient Utilization and Growth Performance of Tilapia (Oreochromis niloticus) Ramdani, Nursuci; Diamahesa, Wastu Ayu; Mukhlis, Alis
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7311

Abstract

The study examines the effects of supplementing coffee grounds to commercial feed on the growth, feed utilization and survival rates of Nile tilapia (Oreochromis niloticus). Given that feed quality and environmental conditions significantly impact fish productivity, the inclusion of coffee grounds, rich in antioxidants and potential immunostimulants, was hypothesized to enhance fish growth and health. The experiment, conducted over 45 days, involved five treatments with varying coffee ground concentrations (0%, 2%, 4%, 6%, and 8%) within a Completely Randomized Design (CRD). Each treatment was replicated three times, resulting in a total of 15 experimental units. Results indicated significant improvements in growth parameters, including absolute weight and length, relative growth, and specific growth rates, particularly at the 6% concentration. However, feed conversion ratio (FCR) and feed utilization efficiency (EPP) did not show significant differences. The study concludes that a 6% coffee ground concentration is optimal for promoting tilapia growth without adversely affecting feed efficiency.
Optimizing The Utilization of Arabica Coffe Grounds Extract on the Growth Perfomance of Tilapia (Oreochromis Niloticus) Nisa, Haerunnisaa; Diamahesa, Wastu Ayu; Lestari, Dewi Putri
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7831

Abstract

Nile tilapia (Oreochromis niloticus) is a widely cultivated freshwater fish due to its adaptability to various environments and ease of breeding. Feed availability is a crucial factor in the success of tilapia cultivation. Quality feed plays a vital role in fish development and using effective feed management strategies can help reduce costs and improve growth outcomes. Previous studies have suggested that coffee grounds can enhance fish immunity and growth due to their antioxidant properties. This research aimed to investigate the impact of adding coffee grounds to commercial feed on the growth and survival of Nile tilapia. The study was conducted over 45 days using a completely randomized design with five treatments and three replications. Treatments included a control group (P1) and feed supplemented with 0.5g (P2), 1g (P3), 3g (P4), and 5g (P5) of coffee grounds per 100g of feed. The results indicated that the addition of coffee grounds significantly affected weight growth, with the highest growth observed in P5. However, no significant differences were found in length growth or specific growth rate (SGR) among treatments. Feed consumption was highest in P2, but feed conversion ratio (FCR) and feed utilization efficiency were most favorable in P5. Water quality parameters remained within optimal ranges throughout the study.
Co-Authors A. Rahman Abidin, Z Adriana Monica Sahidu Agustin, Pradita Ayu Ahyani, Dina Aini, Nila Robiatul Alief Erwanda Panosa Alis Mukhlis Andre Rachmat Scabra Andriana, Ina Eka Angga, Prayogi Dwina Asri, Yuliana Atiatun Shalehah Aula Husnul Fajri Badrun Bagus Dwi Hari Setyono Bagus Dwi Hari Setyono Batun Citra Rahmadani, Thoy Chen, Peter Damai Diniariwisan Damai Diniariwisan Damai Diniariwisan DEDI JUSADI Devi Wahyuni Cahyani Dewi Putri Lestari Dewi Putri Lestari, Dewi Putri Dina Ahyani Dina Ahyani Diniariwisan, Damai Dwi Budi Santoso Dwina Angga, Prayogi Dwiyanti, Septiana Fadliana Khofiatun Fariq Azhar Fitriani, Laily Fitriani Hadzriil Jeeffry , Ku Haini, Naufara Hak, Muhammad Bai`ul Hizbulloh, Lalu Idris Affandi, Rangga Ina Eka Andriana Jami&#039;atul Auliah Juli Ekasari Kaswadi, Hendri Khofiatun, Fadliana Laily Fitriani Laily Fitriani Mulyani Laily Fitriani Mulyani Lalu Hizbulloh Lumbessy, Salnida Yuniarti Masumoto, Toshiro Maudina, Finda Mia Setiawati Miranti, Sevia MUHAMMAD AGUS SUPRAYUDI Muhammad Amin Muhammad Junaidi Muhammad Marzuki Muhammad Sumsanto Mulyani, Laily Fitriani Mutiara, Ni Luh Nanda Diniarti Naufara Haini Nisa, Haerunnisaa Nunik Cokrowati Nunik Cokrowati Nuri Muahiddah Nurul Aeni Pebrianti, Ni Luh Mutiara Putri Lestari, Dewi Rahmadani, Thoy Bathun Citra Rahmadani, Thoy Batun Citra Ramdani, Nursuci Rangga Idris Affandi Retno Palupi RR. Ella Evrita Hestiandari Sadikin Amir Sahrul Alim Sapto Andriyono Septiana Dwiyanti Septiana Dwiyanti Septiana Dwiyanti Septiana Dwiyanti Septiana Dwiyanti Sevia Miranti Shalehah, Atiatun Sitti Hilyana Syawalina Fitria Thoy Batun Citra Rahmadani Thoy Batun Citra Rahmadani Thoy Batun Citra Rahmadani Toshiro Masumoto Toshiro Masumoto Windi Yuastika Yuastika, Windi Yuliana Asri Yuliana Asri Yuliana Asri Yuliana Asri Yuliana Asri YUSRIN YUSRIN Zaenal Abidin