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All Journal Jurnal Akuakultur Rawa Indonesia Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan 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 Perikanan dan Kelautan Tropical Marine Environmental Sciences 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 Materials Science & Nanotechnology Physics Social Sciences Veterinary Other

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Teknik Pembenihan dan Pemeliharaan Larva Ikan Kerapu Bebek (Chromileptes altivelis) di Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung Almatika Sari; Fharisa Nabila Rizvi; Okta Rizal Karsih; Ronal Kurniawan
South East Asian Aquaculture Vol. 4 No. 1 (2026): Juli
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seaqu.4.1.10-15

Abstract

Indonesia merupakan Negara yang terdiri dari beberapa pulau yang dikelilingi oleh lautan, sehingga tidak mengherankan jika kekayaan baharinya melimpah. Kegiatan ini dilaksanakan pada tanggal Agustus - Desember 2024 yang bertempat di Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung. Metode yang digunakan dalam kegiatan ini adalah melakukan pengamatan dan mengikuti secara langsung di lapangan pada kegiatan pembenihan dan pemeliharaan larva ikan kerapu bebek. Hasil kegiatan ini terdiri dari 2 kegiatan yaitu: Pemeliharaan induk (persiapan wadah, seleksi induk, manajemen pakan induk, pengelolaan kualitas air, pemijahan, penanganan telur) dan pemeliharaan larva (persiapan wadah pemeliharaan, penebaran, manajemen pakan, pengecekan perkembangan larva, pemanenan dan pengelolaan kualitas air). Jumlah telur yang didapatkan yaitu sebanyak 200.000 butir telur, FR 82%, (164.166 ekor) dan HR 86% (14.250 ekor). Pemanenan dilakukan setelah 45 hari pemeliharaan, dengan panjang larva 16,42 mm dengan SR 9,5% (14.250 ekor). SR yang di dapat sudah sesuai dengan cara pembenihan ikan yang baik karena berdasarkan SNI No 6487.3 tahun 2011 tentang produksi Kerapu Bebek di sebut bahwa SR Kerapu Bebek umur 45-50 hari >5%.
POPULATION DYNAMICS OF KAWAKAWA (Euthynnus affinis) LANDED AT PPI UJONG BAROH, WEST ACEH Asri Mursawal; Sri Wahyuni; Anisa Mardhatila; Oktavia Oktavia; Fitri Diana; Serliana Hotmariska Marbun; Ronal Kurniawan
Asian Journal of Aquatic Sciences Vol. 8 No. 3 (2025): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.3.345-355

Abstract

This study analyzed the population dynamics of kawakawa tuna (Euthynnus affinis) landed at PPI Ujong Baroh, West Aceh, from May to August 2025, using length-frequency data and the Von Bertalanffy growth model. A total of 815 individuals were measured to estimate growth, mortality, and exploitation parameters. The fork length ranged from 22–69 cm, dominated by medium-sized fish (30–37 cm FL), with the length at first capture (Lc = 33 cm FL) notably smaller than the length at first maturity (Lm ≈ 42–43 cm FL). Growth analysis indicated rapid juvenile growth, characterized by an asymptotic length (L∞) of 90 cm and a relatively high growth coefficient (K), while recruitment occurred periodically throughout the year. Mortality estimates showed total mortality (Z) of 4.77/year, natural mortality (M) of 1.45/year, and fishing mortality (F) of 3.32/year, resulting in an exploitation rate (E) of 0.70, which exceeds the optimal reference point (E = 0.5). These findings indicate that the kawakawa tuna stock in West Aceh is currently overexploited. This study provides the first updated, location-specific population parameter estimates for E. affinis in West Aceh waters, offering a critical scientific baseline for regionally adaptive fisheries management. Science-based management measures are therefore recommended, including implementing a minimum landing size of ≥43 cm FL, seasonal closures during spawning periods, effort control, and strengthened fisher participation to ensure long-term stock sustainability
EFFECT OF Chaetomorpha sp. EXTRACT ON THE HEMATOLOGY OF TILAPIA (Oreochromis niloticus) INFECTED WITH Aeromonas hydrophila M. Riswan; Sri Wahyuni; Ronal Kurniawan; Hayatun Nufus; Asri Mursawal
Asian Journal of Aquatic Sciences Vol. 8 No. 3 (2025): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.3.337-344

Abstract

Chaetomorpha sp. is a green macroalgae that contains various bioactive compounds with antibacterial and anti-inflammatory activities, as well as the potential to improve the physiological health of fish. This research investigates how incorporating Chaetomorpha sp. extract into the diet influences the hematological parameters of Tilapia (Oreochromis niloticus) challenged with Aeromonas hydrophila. The study used a completely randomized design (CRD) with four levels of extract supplementation (0, 25, 50, and 75 mL/kg of feed), with each treatment replicated three times. The hematological parameters analyzed included total erythrocytes, hematocrit, hemoglobin, and blood glucose. The findings indicated that adding Chaetomorpha sp. extract to the diet significantly (p<0.05) improved all hematological indicators relative to the control, with 50 mL/kg of feed as the most effective dosage. The highest erythrocyte count 1.89 x106 cells/mm3, hematocrit value 35.67%, hemoglobin concentration 6.87 g/dL and  blood glucose level 90 mg/dL were observed in fish fed 50 mL/kg extract. This increase in hematological values indicates improved oxygen transport capacity, physiological condition, and metabolic response in fish. Bioactive constituents, including sulfated polysaccharides and flavonoids, are believed to enhance the hematological condition of fish. These findings confirm the potential of Chaetomorpha sp. as a natural supplement to support Tilapia health in sustainable aquaculture systems.
EFFECTS OF DIFFERENT SALINITY LEVELS ON ERYTHROCYTE COUNT, LEUKOCYTE COUNT, AND BLOOD GLUCOSE OF STRIPED CATFISH (Pangasianodon hypophthalmus) M Riswan; Henni Syawal; Usman M Tang; Irwan Effendi; Ronal Kurniawan; Nur Ikhlas Syuhada; Rianti Putri; Sri Wahyuni; Asri Mursawal
Asian Journal of Aquatic Sciences Vol. 9 No. 2 (2026): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.9.2.142-149

Abstract

Pangasianodon hypophthalmus is a stenohaline freshwater catfish that is increasingly exposed to salinity fluctuations due to tidal intrusion and the expansion of brackish water aquaculture. This study aimed to analyze the erythrocyte and leukocyte counts, as well as blood glucose levels, in P. hypophthalmus reared at different salinities. This study used a completely randomized design (CRD) with four treatments: 0 ppt salinity, 5 ppt salinity, 7 ppt salinity, and 9 ppt salinity, with three replicates. The hematological parameters analyzed included total erythrocytes, total leukocytes, and blood glucose. The results showed that salinity had a significant effect (p < 0.05) on total erythrocytes, total leukocytes, and blood glucose. A salinity of 5 ppt produced an optimal hematological profile, with a total erythrocyte count of 2.25 × 10⁶ cells/mm³, a total leukocyte count of 7.65 × 10⁴ cells/mm³, and blood glucose of 52.33 mg/dL. These findings indicate that a salinity of 5 ppt is the optimal salinity threshold for P. hypophthalmus aquaculture in brackish water environments and provide a physiological basis for adaptive aquaculture management amid changing environmental conditions
The Effect of Work Discipline on Employee Performance at the Regional Disaster Management Agency (BPBD) of Pekanbaru City Ade Nanda Febrian Siregar; Annisa Meliana; Okta Rizal Karsih; Fharisa Nabila Rizvi; Ronal Kurniawan
South East Asian Management Concern Vol. 3 No. 2 (2026): May
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamac.3.2.36-39

Abstract

Human resources play a crucial role in realizing the company's established vision, mission, and objectives, and can significantly determine the company's actual achievements, given the available resources. Work discipline plays a crucial role in realizing the company's established vision, mission, and objectives, and can significantly determine the company's actual achievements given the available resources. The work discipline instilled by an organization or company in its employees greatly influences employees' dedication to their work. Employee performance is the tangible behavior of each individual regarding the results of their work for the company, so that each employee's work results differ from those of others. An individual's performance, whether good or poor, will significantly impact an organization's ability to achieve its goals. High performance fosters greater employee loyalty to the organization, increases motivation, and allows employees to enjoy the work they perform; however, it can sometimes leave individuals unable to escape the pressures of their work.  The research method employed uses questionnaires or interviews for data collection; thus, the data sources are referred to as respondents. Work discipline has a positive and significant influence on employee performance at the Regional Disaster Management Agency (BPBD) office in Pekanbaru City, as evidenced by the t-test, which indicates that the calculated t-value is greater than the critical t-value (7.038).
Analysis of Distributive, Procedural and Interactional Service Recovery and Its Impact on Customer Satisfaction of J&T Courier Services in Pekanbaru City Nuryuni Nabila; Annisa Meliana; Fharisa Nabila Rizvi; Ronal Kurniawan; Okta Rizal Karsih
South East Asian Management Concern Vol. 3 No. 2 (2026): May
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamac.3.2.40-43

Abstract

The courier industry in Indonesia has experienced significant growth in recent years, driven by the rapid expansion of e-commerce and increased online shopping activity. This study is based on the fact that many customer complaints regarding J&T services, such as late deliveries, damaged goods, and difficulties communicating with couriers, remain, despite J&T being one of the courier service companies with the highest market share in Indonesia. This study aims to analyze the effects of service recovery on distributive, procedural, and interactional justice. The study was conducted from August to September 2025. The method used was quantitative, with a descriptive approach. Data were collected through questionnaires administered to 100 residents of Pekanbaru City who had used J&T services and experienced delivery-related complaints. The analysis technique used was multiple linear regression in SPSS. The results show that, both partially and simultaneously, distributive, procedural, and interactional service recovery have a positive and significant influence on customer satisfaction. This implies that the better the company handles complaints using an appropriate justice approach, the higher the customer satisfaction
Business Communication by the Riau Coconut Bonsai Community (BKR) in Attracting Business Interest during the Pandemic Among Ornamental Plant Enthusiasts in Pekanbaru Reza Hermawan; Fharisa Nabila Rizvi; Ronal Kurniawan; Okta Rizal Karsih; Annisa Meliana
South East Asian Management Concern Vol. 3 No. 2 (2026): May
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamac.3.2.52-56

Abstract

Communication plays a vital role in the operation and success of businesses whether multinational, micro, or medium-sized and the communication activities carried out within a business help achieve its objectives. The objective of this study is to determine how the Riau Coconut Bonsai Community uses business communication to attract the interest of ornamental plant enthusiasts in Pekanbaru during the pandemic. This study was conducted from August to December 2021. Observations were carried out at the BKR Secretariat, Jl. Patria Sari No. 57, Rumbai, Pekanbaru. The research was conducted through face-to-face interviews in accordance with health protocol standards. This study employed a descriptive method with a qualitative approach. Data were collected through observation, interviews, and documentation with informants who are members of the BKR community. The results of the study indicate that the business communication employed by the BKR community utilizes the marketing mix strategy (4Ps): place (selection of strategic locations), price (setting affordable and competitive prices), product (providing unique coconut bonsai products with high aesthetic value), and promotion (promotion through social media and exhibition activities). Additionally, interpersonal communication among members and potential customers plays a crucial role in building trust and increasing public interest in joining the business
Potensi Farmakologis dan Aplikasi Industri Daun Sirih (Piper betel L.): Sumber Bioaktif untuk Kesehatan dan Inovasi Produk Herbal Fitri Kurniati; Irwan Effendi; Ronal Kurniawan
Agriculture and Biological Technology Vol. 3 No. 1 (2025): Desember
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/agiotech.3.1.1-5

Abstract

Daun sirih (Piper betel L.) dikenal luas sebagai tanaman herbal tradisional yang mengandung berbagai senyawa bioaktif. Penelitian ini bertujuan mengkaji potensi farmakologis dan aplikasi industri daun sirih melalui studi pustaka terhadap literatur ilmiah 2010–2024. Hasil kajian menunjukkan bahwa senyawa seperti flavonoid, fenolik, alkaloid, dan terpenoid dalam daun sirih memiliki aktivitas antibakteri, antijamur, antioksidan, antiinflamasi, dan antikanker. Senyawa-senyawa ini telah dimanfaatkan dalam industri farmasi, kosmetik, dan pangan. Kajian ini menegaskan bahwa daun sirih memiliki prospek besar sebagai bahan baku alami untuk pengembangan produk herbal. Uji lanjutan diperlukan untuk menjamin efektivitas dan keamanannya
Trend Penggunaan Media Sosial Tiktok dikalangan Mahasiswa Tadris IPS Angkatan 2021 UIN Imam Bonjol Padang Intan Efriyani; Annisa Meliana; Fharisa Nabila Rizvi; Okta Rizal Karsih; Ronal Kurniawan
Jurnal Biochamp Vol 3 No 1 (2026): Februari
Publisher : Science, Technology and Education Care (STEDCA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/biochamp.3.1.13-18

Abstract

TikTok sangat populer di kalangan  mahasiswa dan bisa berdampak baik atau buruk pada pada hubungan sosial mereka. TikTok tidak hanya digunakan sebagai hiburan, tetapi juga sebagai media untuk mengekspresikan diri, berbagi informasi, dan bahkan sebagai sarana belajar. penting untuk menganalisis bagaimana mahasiswa menggunakan TikTok dan dampaknya terhadap pola interaksi sosial mereka dalam kehidupan sehari-hari. Hal ini menunjukkan bahwa media sosial bukanlah platform satu arah, melainkan ruang terbuka yang mendukung partisipasi penuh dari setiap individu. TikTok, adalah layanan jejaring sosial berbagi yang menggunakan video berdurasi pendek sebagai media untuk menangkap dan menyajikan kreativitas, pengetahuan, dan momen lainnya yang dimiliki oleh ByteDance, sebuah perusahaan teknologi internet yang berbasis di Beijing dan diciptakan pada tahun 2012. Penelitian ini dilaksanakan mulai Januari sampai Maret 2025 di Program Studi Tadris Ilmu Pengetahuan Sosial Fakultas Tarbiyah dan Keguruan Universitas Islam Negeri yang beralamat JL.Prof.Mahmud Yunus Lubuk Lintah, Anduring, Kec.Kuranji, Kota Padang, Sumatra Barat. Hal ini bertujuan untuk menggali pengalaman dan pandangan subjektif mahasiswa terhadap fenomena penggunaan TikTok. Metode yang digunakan kualitatif dimana pada teknik kualitatif ini tidak menggunakan perhitungan, maksudnya data-data yang dihasilkan berupa kata-kata bukan berbentuk angka. Trend penggunaan tikTok di kalangan mahasiswa Tadris IPS UIN Imam Bonjol Padang menunjukkan kecenderungan yang tinggi dan konsisten TikTok telah menjadi bagian dari kehidupan sehari-hari mahasiswa, digunakan tidak hanya untuk hiburan semata, tetapi juga sebagai media untuk mengekspresikan diri, mendapatkan informasi, serta membangun citra sosial di ruang digital. Terdapa perilaku sosial yaitu imitasi.
Minat Mahasiswa Tadris IPS Angkatan 2021 untuk Menjadi Guru IPS Fakultas Tarbiyah dan Keguruan UIN Imam Bonjol Padang Mairisa Rulyanti; Annisa Meliana; Fharisa Nabila Rizvi; Okta Rizal Karsih; Ronal Kurniawan
Jurnal Biochamp Vol 3 No 1 (2026): Februari
Publisher : Science, Technology and Education Care (STEDCA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/biochamp.3.1.19-25

Abstract

Pendidikan merupakan fondasi utama dalam membangun peradaban manusia yang berkualitas, berdaya saing, dan berakhlak mulia. Dalam proses tersebut. Hal ini bertujuan agar tercipta tenaga pendidik yang kompeten, berdaya saing, dan siap menghadapi tantangan dunia pendidikan yang terus berkembang. Oleh sebab itu, penting untuk memahami dan mengembangkan minat terhadap profesi  guru sejak dini, khususnya di kalangan generasi muda. Penelitian ini dilaksanakan mulai Januari sampai Maret 2025 di Program Studi Tadris Ilmu Pengetahuan Sosial Fakultas Tarbiyah dan Keguruan Universitas Islam Negeri yang beralamat JL. Prof. Mahmud Yunus Lubuk Lintah, Anduring, Kec.Kuranji, Kota Padang, Sumatra Barat. Kebutuhan akan tenaga pendidik yang berkualitas di Indonesia hingga saat ini masih menjadi persoalan yang cukup kompleks dan membutuhkan perhatian  serius. Metode yang digunakan kualitatif dimana pada teknik kualitatif ini tidak menggunakan perhitungan, maksudnya data-data yang dihasilkan berupa kata-kata bukan berbentuk angka. Hasil Minat mahasiswa untuk menjadi guru masih cenderung rendah. Sebagian besar mahasiswa tidak memiliki cita-cita menjadi guru sejak awal masuk kuliah karena menganggap profesi ini memiliki keterbatasan, terutama dalam hal peluang kerja yang sempit, gaji yang tidak menentu, serta adanya tuntutan tambahan seperti sertifikasi dan PPG yang dianggap sulit. kepada mahasiswa agar meningkatkan motivasi dan rasa percaya diri melalui pelatihan public speaking, microteaching, serta keterlibatan aktif dalam kegiatan mengajar di sekolah
Co-Authors Ade Nanda Febrian Siregar Afrila Ardi Annisa Ahmad Faisal Ahmed Al-Harbi Alfiati Silfi Alfiati Silfi Alfinda, Rudi Algi Fari Fikri Ali Sarong Almatika Sari Amalia Suci Wardana Anandasya Suci Nabila Syam Angraika Dirta Anisa Mardhatila Annisa Meliana Annisa Meliana Annisa Meliana Apriliani, Elisa Armando, Fitrian Asiddiqqi, Hasby Asri Mursawal Asri Mursawal Asri Mursawal Asri Mursawal Asri Mursawal Athiyyah Salwaa Andini AZUZ, FAIDAH Davinci, Leonardo Deni Efizon Dessy Yoswaty Dimas Gusriansyah Eddiwan Kamaruddin Efriyeldi, Efriyeldi Eka Lisdayanti Ervia Yudiati Evfi Mahdiyah Fakhrurozi Fakhrurozi Fawwaz Atthoriq Fharisa Nabila Rizvi Fharisa Nabila Rizvi Fharisa Nabila Rizvi Firmansyah, Rodhi Fitri Diana Fitri Kurniati Fitri Kurniati, Fitri Fitrian Armando Fitrian Armando Gusriansyah, Dimas Hayatun Nufus Hayatun Nufus 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 Intan Efriyani Irwan Effendi Irwan Effendi Irwan Effendi Irwan Irwan Irwan Limbong Jumaida Saputri Karnila, Rahman Karnila Karsih, Okta Rizal Kesiva Aulia Rahma Kurnia Utami M Irsyad Nur M Irsyad Nur, M Irsyad M Rizal M. Ali Darmawan Mahdiyah, Evfi Mai Suriani Mairisa Rulyanti Masjudi, Heri Mega Novia Putri Mega Novia Putri Mohamad Gazali Mohamad Gazali Muhammad Abdillah Al Zikri Muhammad Natsir Kholis Muhammad Rizal Razman Munandar Munandar Mursawal, Asri Nabila Afifah Azuga Nabila Afifah Azuga Nadila Yusmi Putri Nafisah Eka Puteri Nasita, Abian Surya Nisfi Maulidia Nasution Nisma Sari Nur Ikhlas Syuhada Nur Ikhlas Syuhada Nur Ikhlas Syuhada Nur Ikhlas Syuhada Nur Ikhlas Syuhada Nur Ikhlas Syuhada, Nur Ikhlas NURLAELA NURLAELA Nursyirwani Nursyirwani Nursyirwani Nursyirwani Nursyirwani, Nursyirwani Nurul Hidayat Nurul Rahmiza Nuryuni Nabila Okta Rizal Karsih Okta Rizal Karsih Okta Rizal Karsih Okta Rizal Karsih Oktavia Oktavia Priowirjanto, Gatot Hari Pulungan, Amar Doli Putri, Mega N. Putri, Mega Novia Putri, Rianti Ramadhan, Azhari Reski Ramanda Reza Hermawan Rianti Putri Riki Saputra, Riki Riswan, M Rita Rostika Rizka Aprisanti Rizki Lestari Rizvi, Fharisa Nabila Rizvi, Fharisa Putri Rusliadi Rusliadi Sahputri, Herliza Khairani Samudra, Arung Sari, Mira Rahmita Saryono Saryono Sefni Hendris Serliana Hotmariska Marbun Shofian Nanda Adiprayoga Shorea Khaswarina Sri Endang Kornita Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Sri Wahyuni Syahputra, Tomi Syahril Nedi Syahril Nedi Syahroni, Desty Tirta Anugerah Tomi Syahputra Ulfi Laili Astika Ulfi Laili Astika Usiani, Lulu Usman M Tang Usman Muhammad Tang Wahyu Hidayat Wahyu Hidayat Windarti Windarti Windarti Windarti Windarti Windarti Yuharmen - Yulindra, Ade Zidni, Irfan