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All Journal Jurnal Akuakultur Rawa Indonesia Jurnal Veteriner Jurnal Natur Indonesia Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Asian Journal of Aquatic Sciences Journal of Rural and Urban Community Empowerment Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Aceh Journal of Animal Science South East Asian Marine Sciences Journal South East Asian Aquaculture South East Asian Management Concern Journal South East Asian Water Resources Managements Agriculture and Biological Technology Journal of Biology, Chemistry, Mathematics and Physics Education Pallangga: Journal of Agriculture Science and Research Jurnal Natur Indonesia
Ronal Kurniawan
Department Of Aquaculture, Faculty Of Fisheries And Marine, Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Physics Social Sciences Veterinary Other

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Penetasan Ikan dengan Bahan Alami: Literatur Review Putri, Mega Novia; Kurniawan, Ronal
South East Asian Aquaculture Vol. 2 No. 2 (2025): Januari
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seaqu.2.2.54-59

Abstract

Penetasan telur merupakan tahap penting dalam budidaya ikan yang memengaruhi kelangsungan hidup larva. Metode konvensional dengan bahan kimia seperti formalin dan metilen biru sering menimbulkan dampak negatif terhadap lingkungan dan residu berbahaya bagi kesehatan manusia. Sebagai alternatif, bahan alami seperti daun sirih (Piper betle), daun pepaya (Carica papaya), daun kamboja (Plumeria sp.), daun kersen jamaika, dan belimbing wuluh (Averrhoa bilimbi) telah dilaporkan memiliki sifat antijamur dan antimikroba yang mendukung keberhasilan penetasan. Artikel ini merangkum berbagai penelitian tentang efektivitas bahan alami dalam meningkatkan daya tetas telur ikan. Beberapa studi menunjukkan hasil positif, seperti larutan daun sirih dengan dosis 2 mL/L yang meningkatkan tingkat penetasan hingga 96,67% dan daun pepaya dengan dosis 4 g/0,96 L mencapai 94,06%. Keberhasilan ini terkait dengan kandungan bioaktif seperti fenol, flavonoid, tanin, dan saponin yang bekerja melawan patogen tanpa membahayakan telur. Penggunaan bahan alami mendukung praktik akuakultur yang ramah lingkungan dan berkelanjutan. Namun, diperlukan penelitian lebih lanjut untuk menentukan dosis optimal dan mengurangi potensi efek toksik pada konsentrasi tinggi. Artikel ini memberikan wawasan penting bagi pengembangan teknologi penetasan ikan berbasis bahan alami yang efisien dan aman
Pemanfaatan Rumput-Rumputan dalam Pencegahan Penyakit pada Ikan: Review Kurniawan, Ronal; Putri, Mega Novia; Karsih, Okta Rizal; Gusriansyah, Dimas
Agriculture and Biological Technology Vol. 2 No. 1 (2024): Desember
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/agiotech.2.1.1-5

Abstract

Kajian ini mengeksplorasi potensi rumput-rumputan sebagai alternatif antibiotik dalam pengendalian infeksi Aeromonas hydrophila pada ikan. Intensifikasi budidaya ikan telah meningkatkan kerentanan terhadap penyakit, sementara penggunaan antibiotik sintetis menimbulkan masalah resistensi dan dampak lingkungan. Analisis literatur dari jurnal-jurnal (2016-2024) menunjukkan bahwa senyawa bioaktif dalam rumput-rumputan, termasuk flavonoid, saponin, dan tanin, memiliki aktivitas antibakteri melalui berbagai mekanisme seperti penghambatan sintesis peptidoglikan dan perusakan membran sel bakteri. Studi molekuler mengungkapkan efek positif ekstrak rumput-rumputan terhadap sistem imun ikan dan penghambatan gen virulensi bakteri. Standardisasi ekstrak, kontrol kualitas, dan evaluasi keamanan menjadi aspek kritis dalam pengembangan produk. Dari segi ekonomi, pemanfaatan rumput-rumputan menawarkan keunggulan biaya dan potensi pemberdayaan masyarakat melalui budidaya. Pengembangan teknologi ekstraksi yang efisien dan ekonomis diperlukan untuk optimalisasi pemanfaatan. Kajian ini menyimpulkan bahwa rumput-rumputan memiliki potensi signifikan sebagai agen antibakteri alami dalam akuakultur, meskipun diperlukan penelitian lebih lanjut untuk aspek keamanan dan efektivitasnya
Addition of Chaetomorpha sp Extract on the Growth and Hematology of Tilapia (Oreochromis niloticus) Sri Wahyuni; Hayatun Nufus; Asri Mursawal; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.7-11

Abstract

The use of phytoimmunostimulants from Chaetomorpha sp which is environmentally friendly and cost-effective. Apart from that, secondary metabolite compounds found in Chaetomorpha sp can improve the immune system. So, it can increase the fish's resistance to disease attacks, improve the digestive system, increase the fish's appetite, and save on feed use. This can be seen from hematological and physiological parameters. Therefore, researchers are interested in researching the effectiveness of the macroalgae Chaetomorpha sp as a phytoimmunostimulant. This research aims to look at the growth of tilapia and the immune system, which includes hematology and physiology of fish fed with warm water extract of Chaetomorpha sp for 30 days of maintenance. Data analysis used One-way ANOVA, and homogeneity was seen. If the analysis results show an effect, it is tested further using Student Newman Keuls (SNK). The research results show that adding Chaetomorpha sp extract influences the growth rate and survival of tilapia fish that are kept for 30 days. This maintenance shows that the administration of Chaetomorpha sp extract with a dose of 50mL/kg feed (T2) gave the best results on growth rate, feed efficiency, hematology, and tilapia survival, namely absolute weight 18.30g, LPS 5.38%/day, absolute length 3.98 cm, FCR 1.44, feed efficiency 69.18%, total erythrocytes 1.85x106 cells/mm3, hemoglobin 6.67 g/dL, hematocrit 35.33-37.67%, total leukocytes 2.42x104 cells/mm3, leukocrit 2.67%, blood glucose 43% and survival 93.33%.
Effect of Different Salinity on the Growth of Chlorella sp in Laboratory Scale Culture Irwan Effendi; Mega Novia Putri; Ulfi Laili Astika; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.21-27

Abstract

This study aimed to determine the optimal salinity in increasing the growth rate of Chlorella sp in laboratory scale culture. This research was conducted in July 2023 at the Marine Biotechnology Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Riau. The experimental method was applied using a complete randomized design (CRD) with four treatments and three replicates. The treatments were as follows: T0 (control), T1 (25 ppt salinity), T2 (30 ppt salinity), and T3 (35 ppt salinity). The initial density of Chlorella sp was 250x103 cells/mL, and cell abundance observations were carried out for 14 days. The parameters observed were cell abundance, specific growth rate, and water quality (temperature and pH). The results showed that different salinity influenced the growth of Chlorella sp. 35 ppt salinity gave the best results on cell abundance of 266.66x104 cells/mL, with peak population occurring on day 10. Water quality during the study was still in the normal range and can be tolerated for the growth of Chlorella sp, and the temperature ranged from 25-31oC and pH 6.4-8.0
Sustainable Marine Ecotourism Development Strategy at Barambang and Sibintang Beach, Central Tapanuli Regency Shofian Nanda Adiprayoga; Husnul Yaqin Harahap; Ronal Kurniawan; Tirta Anugerah; Okta Rizal Karsih
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.28-34

Abstract

When the holiday season approaches, local and foreign travellers flock to Barambang Beach's and Sibintang Beach's ecotourism regions, which are well-known tourist destinations. Nonetheless, inadequacies in the administration of ecotourism attractions occasionally result in low weekday and weekend visitor numbers at Barambang and Sibintang beaches. Since local populations rely on ecotourism activities for their livelihoods, this influences such activities but is not felt as much by those communities. The study was conducted in 2022 between July and September. A mixed methodology, along with an explanatory qualitative approach, was used in the study. The significant data used in the analysis came from interviews with a variety of participants as well as assessments of the water quality and ecology. Secondary data from some relevant document sources was gathered in the interim. The data analysis used Willingness to Pay (WTP), Willingness to Accept (WTA), economic potential, and SWOT analysis. The study findings indicate that the development plan can be implemented by including auxiliary facilities, such as signs informing visitors of the location of auxiliary facilities, directions, and the farthest swimming-safe water point. Tourists are also eagerly awaiting the establishment of eco-friendly play facilities. Additionally, the government can enact laws that give local community-run businesses regular direction and funding access
Antibacterial activity of Rhizophora apiculata leaf extract against Edwardsiella tarda bacteria Ronal Kurniawan
Jurnal Natur Indonesia Vol. 19 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Aquaculture production is vulnerable to adverse impacts to disease and environmental conditions. One of the pathogenic bacteria that infection cultured is Edwardsiella tarda. The aim of this study was to find out the sensitivity of R.apiculata leaf extract in inhibiting the growth of E.tarda. The research method used is the experimental method, with the Kirby-Bauer disc method. The doses used were 100% (10000 ppm), 90% (9000 ppm), 80% (8000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40% (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline), blank discs used were 6 mm in size. The results showed that the ethanolic extract of the leaves of R. apiculata at a dose of 1000-10000 ppm gave various inhibitory diameters ranging from 6.27-9.87 mm and presenting inhibition zone diameters in the medium category
Inhibition Test of Hot Water Extract of Rhizophora apiculata Leaves Against Edwardsiella tarda Bacteria in-Vitro Ronal Kurniawan; Sri Wahyuni; Fitrian Armando
Jurnal Natur Indonesia Vol. 20 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

One of the plants that have the potential as antibacterial ingredients is Rhizophora apiculata leaf because it contains secondary metabolites, such as tannins, saponins, flavonoids, steroids, and terpenoids. This study aims to find out the inhibition of hot water extract of R. apiculata leaves in inhibiting the growth of Edwardsiella tarda. The research method used is an experimental method which includes sample preparation, extraction, antibacterial activity test using the Kirby-Bauer disc method and applying a Completely Randomized Design (CRD). The doses used were 100% (10000 ppm), 90% (9000 ppm), 80% (8000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40% (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). The results showed that the hot water extract of R. apiculata leaves at a dose of 1000-10000 ppm gave various inhibitory diameters ranging from 6.25-10.08 mm and the clear zone formed was classified as medium
Inhibition Zone Test of Chaetomorpha sp. Extract Against Aeromonas hydrophilla and Vibrio sp. Bacteria Sri Wahyuni; Mohamad Gazali; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 20 No. 2 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Chaetomorpha sp. is a green algae that has anti-bacterial compounds and at certain times found very much. The purpose of this study was to see the inhibition zone produced from the ethanol extract of Chaetomorpha sp. against A. hydrophilla and Vibrio sp. This research was done in March 2022. Extraction of Chaetomorpha sp., antibacterial effectiveness testing was done at the Biotechnology Laboratory, Faculty of Fisheries and Marine, Riau University. The method used is descriptive method. Sensitivity test was performed using the Kirby Bauer disc method. To reduce the error rate, it was repeated three times. The doses of macroalgae extract used were, doses of 100% (10,000 ppm), 90% (9,000 ppm), 80% (8,000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40% (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). Based on the observations, it was found that the use of ethanol extract of Chaetomorpha sp. The result is able to inhibit the growth of bacteria A. hydrophilla and Vibrio sp. at the highest dose (10000 ppm) in an range of 13.5 -14.5 mm which was classified as strong category, the lowest dose was at 5000 ppm as moderate category.
Growth, Mortality, Exploitation Rate, and Recruitment of Blood Clam (Anadara granosa) in the Rangsang Barat Waters, Riau Province Efriyeldi Efriyeldi; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Growth, mortality, exploitation rate, and recruitment of Anadara granosa cockle in Rangsang Barat coastal waters were studied from July to October 2019. The objective of this research was to study the growth, mortality, exploitation rate, and recruitment of A.granosa cockle. Sampling was done monthly at three main stations. The cockle collected from plot 1 x 1 m2 on quadrat transect. The result showed that the asymptotic length (L∞) of A.granosa was 30.45 mm, the annual growth coefficient (K) was 0.83 per year, the total mortality (Z) was 4.46 per year, natural mortalities (M) were 1.60 per year, and fishing mortalities (F) was 2.86 per year. The rate of exploitation (E = 0.64) of blood clams in Rangsang Barat waters has begun to threaten sustainability. The recruitment occurred every month, the peaks occurred in July (13.83 %), and August (13.08 %).
Utilization of Sago Liquid Waste Organic Fertilizer as a Culture Medium for Chlorella sp. Irwan Effendi; Mega Novia Putri; Ulfi Laili Astika; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Chlorella sp. is a microalga that can grow and develop in wastewater media, including sago liquid waste that is not utilized and becomes a pollution material. This study aims to determine the utilization of sago liquid waste organic fertilizer on the growth of Chlorella sp. This research was conducted in February 2023 at the Marine Biotechnology Laboratory, Faculty of Fisheries and Marine Sciences, Riau University. The method used was the experimental method, by applying a complete randomized design (CRD) with four treatments and three replicates. The treatments were as follows: T0 (control), T1 (150 ml sago liquid waste), T2 (200 ml), and T3 (250 ml). The initial density of Chlorella sp. was 250 x103 cells/ml, and cell abundance observations were made for 14 days. The parameters observed were cell abundance, specific growth rate, and water quality (temperature and pH). The results showed that the utilization of sago liquid waste affected the abundance of Chlorella sp. 150 ml concentration and gave the best results on cell abundance of 233.33 x103 cells/ml with the peak population occurring on day 9. Water quality during the study was still in the normal range and can be tolerated for the growth of Chlorella sp, namely temperature ranging from 26-31o C and pH 6.2-8.0
Co-Authors Ahmed Al-Harbi Al Zikri, Muhammad Abdillah Alfiati Silfi Alfinda, Rudi Ali Sarong Angraika Dirta Apriliani, Elisa Armando, Fitrian Asiddiqqi, Hasby Asmika Harnalin Simarmata Asri Mursawal Atthoriq, Fawwaz AZUZ, FAIDAH Davinci, Leonardo Deni Efizon Dessy Yoswaty Diana, Fitri Dimas Gusriansyah Eddiwan Kamaruddin Efawani, Efawani Efriyani, Intan Efriyeldi, Efriyeldi Eka Lisdayanti Fakhrurozi, Fakhrurozi Fikri, Algi Fari Firmansyah, Rodhi Fitri Kurniati, Fitri Fitrian Armando Fitrian Armando Gusriansyah, Dimas Hayatun Nufus Hayatun Nufus Hendri Kurniawan, Hendri Hendriyantoni, Agus Henni Syawal Henny Syawal Henny Syawal Husnul Yaqin Harahap Husnul Yaqin Harahap, Husnul Yaqin Iesje Lukistyowati Ika Kusumawati Irwan Effendi Irwan Irwan Irwan Limbong Karnila, Rahman Karnila Karsih, Okta Rizal M Irsyad Nur, M Irsyad M Rizal Mahdiyah, Evfi Mai Suriani Marbun, Serliana Hotmariska Mardhatila, Anisa Masjudi, Heri Mega Novia Putri Mega Novia Putri Meliana, Annisa Mohamad Gazali Mohamad Gazali Muhammad Natsir Kholis Muhammad Rizal Razman Munandar Munandar Mursawal, Asri Nabila Afifah Azuga Nasita, Abian Surya Nisfi Maulidia Nasution Nur Ikhlas Syuhada Nur Ikhlas Syuhada, Nur Ikhlas NURLAELA NURLAELA Nursyirwani, Nursyirwani Nurul Hidayat Okta Rizal Karsih Okta Rizal Karsih Oktavia Oktavia Priowirjanto, Gatot Hari Pulungan, Amar Doli Putri, Mega N. Putri, Mega Novia Putri, Nadila Yusmi Putri, Rianti Rahmiza, Nurul Ramadhan, Azhari Ramanda, Reski Riki Saputra, Riki Riswan, M Rita Rostika Rizka Aprisanti Rizki Lestari Rizvi, Fharisa Nabila Rizvi, Fharisa Putri Rulyanti, Mairisa Rusliadi Rusliadi Sahputri, Herliza Khairani Samudra, Arung Saputri, Jumaida Sari, Mira Rahmita Saryono Saryono Shofian Nanda Adiprayoga Shorea Khaswarina Sri Endang Kornita Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Syahputra, Tomi Syahril Nedi Syahroni, Desty Syam, Anandasya Suci Nabila Tirta Anugerah Tomi Syahputra Ulfi Laili Astika Ulfi Laili Astika Usiani, Lulu Usman Muhammad Tang Windarti Windarti Windarti Windarti Yuharmen - Yulindra, Ade Zidni, Irfan