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All Journal Acta Aquatica: Aquatic Sciences Journal Jurnal Intek Akuakultur Jurnal Abdi Insani
Irawan, Henky
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INTRODUKSI PRODUKSI BENIH MELALUI TEKNIK FISI PADA KELOMPOK PEMBUDIDAYA TERIPANG (Stichopus sp.) DI KAMPUNG MADONG, KELURAHAN KAMPUNG BUGIS, KOTA TANJUNGPINANG Muzahar, Muzahar; Bakkara, Okto Rimandi; Putri, Dwi Septiani; Miranti, Shavika; Wulandari, Rika; Yulianto, Tri; Irawan, Henky; Raza’i, Tengku Said
Jurnal Abdi Insani Vol 12 No 9 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i9.2042

Abstract

Sea cucumbers are members of the Phylum Echinodermata which have high economic value and widely used by the coastal communities of the Riau Islands as food sources and medicines. Unregulated fishing greatly pressure sea cucumber populations in natural waters. Aquculture is regarded as a solution to the over-exploitation of sea cucumbers from natural waters. However, further research is needed to establish the better technical and economic efficiency. Local sea cucumber farmer needs information about the technical aspects of sea cucumber seed production so they can produce the seeds independently. Therefore, a series of dissemination and demonstrations were organized to introduce the method of produce sea cucumber seeds using the fission technique. This community service activity was carried out using the participatory action research (PAR) method involving the Maju Mandiri fish farmer group in Kampung Madong, Kampung Bugis Village, Tanjungpinang City. The team carried out counseling and demonstrated the binding procedure to simulate fission in sea cucumber. Our partner group seemed enthusiastic about participating in the activity and quite proficient on some basic fission techniques to provide sea cucumber seeds. This activity also raises awareness among the locals to actively maintain the sustainability of marine resources. So, we hope our partner group can start the sea cucumber culture business with independent seed production, and they can achieve our goals to improving community welfare and preserving the water environment simultaneously.
Pengaruh Penambahan Tepung Labu Kuning, Wortel dan Ubi Jalar Ungu Pada Pakan Pelet Komersial Terhadap Kecerahan Warna Ikan Badut Premnas biaculeatus Rachmad Nor, Ricko; Nor, Rachmad; Irawan, Henky; Yulianto, Tri
Jurnal Intek Akuakultur Vol. 7 No. 1 (2023): Intek Akuakultur
Publisher : Program Studi Budidaya Perairan Universitas Maritim Raja Ali Haji

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Abstract

Ikan badut Premnas biaculeatus hasil biakan atau budidaya cenderung mengalami degeneratif warna atau memiliki warna tubuh yang pudar tidak seperti habitat alami. Penelitian ini bertujuan untuk meningkatkan kecerahan warna ikan badut melalui penambahan tepung buah yang mengandung ?-karoten pada pakan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) 4  perlakuan 5 ulangan. Pemberian pakan ikan badut dengan Kontrol (tanpa penambahan tepung), perlakuan A (tepung labu kuning) B (tepung wortel) dan C (tepung ubi jalar ungu) dengan dosis masing-masing 15% (15g/100g pakan). Ikan yang digunakan berukuran panjang dan berat masing-masing  ± 3 cm dan ± 0,5 g. Padat tebar 1 ekor/soliter dan jumlah ikan 20 ekor. Parameter perubahan warna badan merah menunjukkan hasil yang terbaik pada perlakuan B (tepung wortel 15%) dengan nilai R (-14,1± 4,1), G (-16,1±3,8) dan B (-9,3± 5,8). Parameter perubahan warna badan putih diperoleh perlakuan terbaik pada kontrol (tanpa penambahan tepung) dengan nilai R (28,3±0,8), G (34,5±3,1) dan B (28,5±1,0). Parameter laju pertumbuhan bobot mutlak dan panjang mutlak terbaik terdapat pada perlakuan B (tepung wortel 15%) dengan nilai berturut-turut adalah (0,324±0,01) dan (0,64±0,05). Parameter tingkat kelangsungan hidup mendapatkan nilai (100±0,00).
Growth of Kappaphycus alvarezii seaweed in off-bottom technique with different number of cultivation facilities Aripin, Aripin; Muzahar, Muzahar; Irawan, Henky
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.14485

Abstract

Seaweed or algae is macro algae whose habitat is in sea water and several types in brackish water. There are several seaweed cultivation techniques, one of which is the off-bottom technique. The off-bottom technique with different levels of cultivation facilities where seaweed seeds are placed has never been carried out by aquaculturis in the Bintan Island area, Riau Islands (Kepri). The aim of the research was to determine the speed of increase in weight of seaweed grown in cultivation facilities with different numbers of levels using the off-bottom technique. The research will be carried out in September-October 2022 on the sea coast of Tembeling Village, Bintan Regency. The experiment was carried out with three treatments and each was repeated 3 times in a completely randomized design. The treatments consisted of 1 level (K), 2 levels (A) and 3 levels (B) cultivation facilities. The Anova results showed that the weight gain of the seaweed test was significantly different between the three treatments (p<0.05). The best results in the 3 level cultivation facility treatment (B) were 11.04±0.73 g, but the survival and daily growth rates were not significantly different (p>0.05). Keywords: Off-Bottom Technique; Number of Different Levels of Cultivation Facilities
Comparative growth performance of Kappaphycus striatus and the green variety of Kappaphycus alvarezii under longline cultivation Muzahar, Muzahar; Raza’I, T. Said; Viruly, Lily; Wulandari, Rika; Miranti, Shavika; Putri, Dwi Septiani; Yulianto, Tri; Bakkara, Okto Rimandi; Irawan, Henky; Sinaga, Daniel; Nasmi, Jannesa; Andia, Bherly; Saputra, Rio; Bahri, Samsul; Lovina, Ronaldy; Darmawan, David; Syafiq, R. Muhammad
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 3 (December, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i3.21565

Abstract

This study compares the growth of two seaweed species, Kappaphycus striatus and Kappaphycus alvarezii (green variety), using the longline method in the waters of Pelakak Village, Lingga Regency. This research aims to identify differences in daily growth rates and environmental factors affecting the productivity of both seaweed species. The study was conducted over 45 days using a randomized block design with two treatments and four replications. Measured parameters included absolute weight growth, specific growth rate, and water quality. The results showed that K. alvarezii (green variety) exhibited a higher daily growth rate (0.55% weight/day) compared to K. striatus (0.31% weight/day). Environmental factors such as temperature (28–30°C), salinity (30–31 ppt), and pH (7.1–7.4) were within the optimal range, but the current velocity (0.4–0.5 m/s), which exceeded the standard, potentially inhibited growth an increased the risk of talus damage. The t-student test indicated no significant difference in growth between the two seaweed species (p>0.05). These findings suggest that K. alvarezii (green variety) is more adaptive to local environmental conditions than K. striatus, although current velocity and pest presence remain challenges in seaweed cultivation. This study contributes to optimizing seaweed farming strategies in coastal areas. Keywords: Growth; Kappaphycus striatus; Kappaphycus alvarezii Green Variety; Longline
Optimasi Tingkat Kelangsungan Hidup Ikan Ikan Kerapu Cantang Epinephelus fuscoguttatus >< Epinephelus lanceolatus Dengan Penambahan Ekstrak Daun Jambu Biji Merah Psidium guajava Linn Pada Media Transportasi Maidah, Indah Parah; Irawan, Henky; Bakkara, Okto Rimandi
Jurnal Intek Akuakultur Vol. 8 No. 1 (2026): Intek Akuakualtur
Publisher : Program Studi Budidaya Perairan Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/intek.v8i1.7453

Abstract

ABSTRAK Transportation of live fish such as cantang grouper Epinephelus fuscoguttatus × Epinephelus lanceolatus is at risk of causing stress that can reduce survival rates. This study aims to determine the optimal dose of red guava leaf extract Psidium guajava Linn as a natural anesthetic to improve fish survival during transportation. This research will be conducted in December 2023 and conducted in two places, namely at Hatchery D' Marine Aquaculture and Kampung Madong. The research used a Completely Randomized Design (CRD) with four treatments, namely: K control (0 ml/L), A addition of red guava leaf extract (4 ml/L), B addition of red guava leaf extract (6 ml/L), and C addition of red guava leaf extract (8 ml/L), each with three replications. The parameters observed included survival rates after transportation and during maintenance, blood glucose levels, fish behavior, and water quality. The results showed that all treatments had a 100% survival rate after transportation. During 7 days of maintenance in floating net cages, treatment A showed the highest survival rate (100%), followed by K (86.67%), C (80%), and B (48.33%). The lowest blood glucose levels occurred in treatment B (56.67 mg/dL), while the highest was in the control (92.33 mg/dL). Fish in treatment A also showed the best behavior and feed response. These results indicate that the addition of red guava leaf extract at a dose of 4 ml/L is effective in reducing stress and increasing the survival of cantang grouper during and after transportation.
EFEKTIVITAS SUMBER NITROGEN PADA PUPUK ORGANIK YANG BERBEDA SEBAGAI SUBSTITUSI UREA PADA NUTRIEN KULTUR Nannochloropsis sp. Sinurat, Paulin; SINURAT, PAULIN BERNADET; Irawan, Henky; Putri, Dwi Septiani
Jurnal Intek Akuakultur Vol. 8 No. 1 (2026): Intek Akuakualtur
Publisher : Program Studi Budidaya Perairan Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/intek.v8i1.7478

Abstract

Nitrogen is one of the nutrients needed Nannochloropsis sp., but there is no determination of fertilizer dosage based on fertilizer nitrogen source. This study aims to determine the provision of organic fertilizers capable of substituting urea in nutrient cultures Nannochloropsis sp. and effective used as a source of nitrogen for cell populations Nannochloropsis sp.. This research was conducted in April-May 2025 at the Batam Marine Aquaculture Center. This study used a complete randomized design (RAL) with 1 Control and 3 treatments, namely: control (50 mg/L Urea, Za, TSP, EDTA), treatment a (dung bats, Za, TSP, EDTA), treatment B (Quail Dung, ZA, TSP, EDTA), treatment C (Dung swallows, ZA, TSP, EDTA), each 3 replications. The observed parameters include daily density, population peak, doubling time, light intensity and water quality. Results showed for 7 days maintenance of cell density Nannochloropsis sp. the highest growth was found in h-5 maintenance with the highest growth in treatment B (quail droppings) is 23.193.055 cells/ml with the fastest doubling time is 36.3 hours and the lowest growth in control is 17.468.056 cells/ml with the longest doubling time is 52.3 hours. The peak population for control and all treatments is found on H-5 maintenance. The light intensity during the study ranged from 9.100 lux. This result shows that the fertilizer of bat droppings, quail droppings and bird droppings can be a substitution of urea and effective as a source of nitrogen in the nutrient culture Nannochloropsis sp. for cell populations Nannochloropsis sp..
Efektivitas Pupuk Anorganik Yang Berbeda Untuk Substtusi Urea Sebagai Sumber Nitrogen Pada Nutrien Kultur Nannochloropsis sp. Ilyas, Muhammad Ilyasya; Ilyasya, Muhammad; Irawan, Henky; Sinaga, Daniel
Jurnal Intek Akuakultur Vol. 8 No. 1 (2026): Intek Akuakualtur
Publisher : Program Studi Budidaya Perairan Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/intek.v8i1.7496

Abstract

Nitrogen is one of the nutrients needed by Nannochloropsis sp., but there has been no determination of fertilizer dosage based on fertilizer nitrogen sources. This study aims to determine the provision of inorganic fertilizers capable of substituting urea in the culture nutrients of Nannochloropsis sp. and to find out inorganic fertilizers that are effective for use as a nitrogen source for the Nannochloropsis sp. cell population. This study used a Completely Randomized Design (CRD) with 1 control and 3 treatments, namely: Control (Urea 50 mg / L Urea, Za, TSP, EDTA), treatment A (NPK Fertilizer 16 16 16, Za, TSP, EDTA), treatment B (Calcium Nitrate Fertilizer, ZA, TSP, EDTA), treatment C (Calcium Ammonium Nitrate Fertilizer, ZA, TSP, EDTA), each with 3 replications. The parameters observed included daily density, peak population, doubling time, water quality and light intensity. The results showed that during 7 days of maintenance, the highest daily density of Nannochloropsis sp. cells was found on D-5 of maintenance with the highest growth in treatment C (Calcium Ammonium Nitrate Fertilizer) which was 18,528,611 cells/ml with the fastest doubling time in treatment C (Calcium Ammonium Nitrate Fertilizer) which was 37.04 cells/hour and the lowest growth in treatment A (NPK 16 16 16 Fertilizer) which was 17,128,611 cells/ml with the longest doubling time in the control (Urea Fertilizer) which was 46.6 cells/hour. The peak population for the control and all treatments was found on D-5 of maintenance. The light intensity during the study ranged from 6,357 lux. These results indicate that NPK 16 16 16, Calcium Nitrate and Calcium Ammonium Nitrate fertilizers are able to substitute urea as a nitrogen source in the nutrient culture of Nannochloropsis sp. and the three organic fertilizers are effective in being used as a nitrogen source for the Nannochloropsis sp. cell population.  
Co-Authors Andia, Bherly Aripin Bakkara, Okto Rimandi Daniel Sinaga, Daniel Darmawan, David Ilyas, Muhammad Ilyasya Ilyasya, Muhammad Lily Viruly Lovina, Ronaldy Maidah, Indah Parah Muzahar Nasmi, Jannesa Nor, Rachmad Putri, Dwi Septiani Rachmad Nor, Ricko Razai, Tengku Said Raza’i, T. Said Rika Wulandari Samsul Bahri Saputra, Rio Shavika Miranti Sinurat, Paulin SINURAT, PAULIN BERNADET Syafiq, R. Muhammad Tri Yulianto