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All Journal Acta Aquatica: Aquatic Sciences Journal Jurnal Perikanan Universitas Gadjah Mada Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Journal of Maritime Empowerment Jurnal Perikanan
Jannesa Nasmi
Program Studi Budidaya Perairan, Fakultas Ilmu Kelautan Dan Perikanan, Universitas Maritim Raja Ali Haji, Tanjungpinang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Materials Science & Nanotechnology Social Sciences Other

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Transportation of juvenile striped snakehead (Bloch 1793) with different densities in 3 ppt salinity media Jannesa Nasmi; Kukuh Nirmala; Ridwan Affandi
Jurnal Iktiologi Indonesia Vol 17 No 1 (2017): February 2017
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v17i1.307

Abstract

The present study aimed to ensure the effect 3 ppt of salt addition into the transportation media water to the water quality, suvival rate, daily growth rate, and stress level after transportation. This study was consisted of two phase, the first phase was fish transportation for 24 hours and the second phase was 21 days rearing after-transportation. Snake-head larvae’s transported with five treatments i.e a transportation media with no salt addition and stocked with 30 larvae L-1 as the control, and four transportation media with 3 ppt salt addition at different densities (30, 45, 60, and 75 larvae L-1). During the transportation, the water quality and survival rate were determined. The first phase experiment showed that salt addition in transportation media maintained the water quality and higher survival rate than control. After 24 hours, 30 larvae of each treatment were stocked into tank with 0 ppt salinity media. The results showed no significant differences in the survival rate and growth rate at the different densities without salt addition. The pH and blood glucose levels were slowly back to normal in day 21. Abstrak Tujuan penelitian ini adalah untuk menganalisis pengaruh pemberian garam 3 ppt dalam media pengangkutan terhadap perubahan kualitas air dan laju sintasan selama pengangkutan, laju pertumbuhan harian, glukosa darah, dan pH darah pascapengangkutan. Penelitian ini terdiri atas dua tahap kegiatan, yaitu tahap satu adalah pengangkutan selama 24 jam dan tahap dua adalah pemeliharaan pascapengangkutan selama 21 hari. Pada tahap satu kantong plastik diisi air 1 L dan dilakukan pengepakan sesuai dengan perlakuan, yaitu perlakuan kontrol tanpa garam (kepadatan 30 ekor L-1) dan perla-kuan penambahan garam 3 ppt (kepadatan 30, 45, 60, dan 75 ekor L"1). Penelitian ini menggunakan metode rancangan acak lengkap dengan lima perlakuan dan empat ulangan. Hasil penelitian menunjukkan perlakuan dengan penambahan garam dalam media pengangkutan dapat mempertahankan kondisi kualitas air dan menghasilkan laju sintasan yang le-bih tinggi dibandingkan pada perlakuan tanpa garam. Tahap dua adalah pemeliharaan pascapengangkutan selama 21 hari. Setelah masa pengangkutan juvenil dari setiap perlakuan dan ulangan dipelihara 30 ekor per akuarium pada media bersalinitas 0 ppt. Hasil penelitian menunjukkan laju sintasan dan laju pertumbuhan pascapengangkutan tidak berbeda nyata pada setiap perlakuan. Glukosa darah dan pH darah perlahan kembali normal hingga pemeliharaan hari ke-21.
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
Biofloc Formation Performance in Seawater Using Different Carbon Sources As Initial Media for Fish Culture Okto Rimandi Bakkara; Rika Wulandari; Daniel Sinaga; Muzahar Muzahar; Dwi Septiani Putri; Shavika Miranti; Jannesa Nasmi; Henky Irawan; Tri Yulianto; Tito Aria Nugraha; Veryl Hasan
Jurnal Perikanan UGM (Journal of Fisheries Sciences) Vol 28, No 1 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.119255

Abstract

Biofloc technology has become a promising approach for maintaining water quality in intensive seawater aquaculture through the activity of heterotrophic microorganisms. This study aimed to evaluate the performance of the biofloc formation in seawater culture media using different carbon sources without starter inoculation. This study evaluated biofloc formation in seawater culture media using different carbon sources, namely molasses (control), wheat flour, rice flour, and tapioca flour. A completely randomized design with four treatments and three replications was employed. The research method employed a completely randomized design (CRD) with four treatments and three replications. The observed parameters included biofloc volume (Imhoff cone), absorbance value (optical density), plankton composition, and bacterial characteristics through isolation and Gram staining. The results showed that statistically, different carbon sources had no significant effect on biofloc volume (p > 0.05). However, descriptively, differences in performance among treatments were observed. The rice flour treatment exhibited the highest biofloc volume and absorbance value, indicating higher and more stable microbial biomass density, while tapioca flour showed the lowest performance. Microbiological analysis revealed the presence of Gram-negative heterotrophic bacteria, Gram-positive bacteria, and plankton communities consisting of phytoplankton, protozoa, and rotifers, indicating that the biofloc system had developed into a complex microecosystem. In conclusion, the type of carbon source influences the dynamics of biofloc formation, with rice flour recommended as the optimal carbon source to support biofloc system stability.
EFFECTS OF MAGGOT MEAL AND GONGGONG SHELL MEAL ON MOLTING AND GROWTH PERFORMANCE OF MUD CRAB (Scylla serrata) Daniel Sinaga; Jannesa Nasmi; Benny Manullang
Vol 15 No 6 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i6.1989

Abstract

Feed efficiency and mineral adequacy to support molting and growth are major challenges in the cultivation of mud crab (Scylla serrata). This study aimed to evaluate the effect of supplementing maggot meal (Hermetia illucens) and gonggong shell meal in feed formulations on molting frequency, growth performance, and survival rate of mud crabs. The experiment was conducted using a Completely Randomized Design (CRD) consisting of three treatments: A (control—trash fish), B (feed + 5% maggot meal + 1% gonggong shell meal), and C (feed + 10% maggot meal + 3% gonggong shell meal), each with five replications. The crabs were reared for 30 days and fed daily at 5% of the total biomass. Parameters observed included absolute weight gain, specific growth rate (SGR), molting frequency, survival rate, proximate composition of the feed, and water quality. The results showed that treatment C produced the highest growth performance (absolute weight gain of 39.00 g; SGR 1.30%/day) compared to treatment B (18.00 g; 0.60%/day) and A (6.60 g; 0.22%/day). Proximate analysis indicated an increase in protein (36.42%) and ash content (12.35%) in the formulation containing gonggong shell meal. The survival rate remained high across treatments (A = 100%, B = 87%, C = 93%), while no individuals underwent molting during the study period. In conclusion, the supplementation of 10% maggot meal and 3% gonggong shell meal effectively improved the growth performance of S. serrata but was not sufficient to stimulate molting.
SOLUSI MANAJEMEN PRODUKSI IKAN UNTUK KELOMPOK PEMBUDIDAYA IKAN MAJU MANDIRI DI KAMPUNG MADONG, TANJUNGPINANG Shavika Miranti; Angga Reni; Hadli Lydia Rikayana; Zicky Ilham; Hasanul Bolkiah; Esther Yosefa Ambarita; Daniel Sinaga; Jannesa Nasmi
Jurnal Pemberdayaan Maritim Vol 7 No 2 (2025): Journal of Maritime Empowerment
Publisher : Lembaga Penelitian, Pengabdian Masyarakat, dan Penjaminan Mutu, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jme.v7i2.7317

Abstract

Observasi terhadap kondisi eksisting perlu dilakukan untuk menentukan solusi terhadap masalah yang dihadapi dalam kegiatan budidaya ikan. Kelompok pembudidaya ikan (Pokdakan) Maju Mandiri memiliki sarana budidaya yang cukup memadai tetapi memiliki manajemen produksi yang perlu diperbaiki agar mendapatkan hasil produksi yang lebih baik. Kegiatan pengabdian ini bertujuan untuk memberikan solusi dalam manajemen produksi ikan untuk Kelompok Pembudidaya Ikan Maju Mandiri di Kampung Madong, Tanjungpinang. Pada kegiatan pengabdian kepada masyarakat ini, dilakukan observasi, analisis serta praktik pembuatan pakan. Ketersediaan pakan menjadi salah satu permasalahan produksi di Pokdakan Maju Mandiri. Melalui kegiatan ini dilakukan transfer ilmu hasil penelitian yang telah dilakukan untuk dapat diterapkan anggota Pokdakan Maju Mandiri dalam kegiatan pemeliharaan ikan.
Co-Authors Andia, Bherly Angga Reni Benny Manullang Daniel Sinaga Daniel Sinaga Daniel Sinaga, Daniel Darmawan, David Dwi Septiani Putri Esther Yosefa Ambarita Hadli Lydia Rikayana Hasanul Bolkiah Henky Irawan Kukuh Nirmala Lily Viruly Lovina, Ronaldy Muzahar Muzahar Muzahar Okto Rimandi Bakkara Putri, Dwi Septiani Raza’i, T. Said RIDWAN AFFANDI Rika Wulandari Rika Wulandari Samsul Bahri Saputra, Rio Shavika Miranti Syafiq, R. Muhammad Tito Aria Nugraha Tri Yulianto Tri Yulianto Veryl Hasan Zicky Ilham