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Optimization of growth and survival of whiteleg shrimp (Litopenaeus vannamei) postlarvae through dietary variation: A study of physiological and microbiological responses Izwar, Akmal; Nugrahawati, Anis; Hakim, Syahirman; Irfannur, Irfannur; Putra, Dani Pratama; Azhar, Rossy; Radhi, M
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.v12i2.22129

Abstract

The whiteleg shrimp (Litopenaeus vannamei) is a prominent species in global aquaculture due to its resilience to environmental fluctuations and high growth potential. The success of the larval phase is critically determined by feed quality and the stability of the culture environment. This study comparatively evaluated the efficacy of various feed types on the performance of Litopenaeus vannamei postlarvae. A comparison was made between live, frozen, and preserved natural feed (Artemia sp.) and formulated pellet feed in terms of growth, survival rate, and Vibrio bacteria abundance. The results highlighted that frozen Artemia sp. (P2) was significantly superior to other treatments. Postlarvae fed frozen Artemia sp. exhibited the highest growth (length and absolute weight) and survival rate, reaching 78.67%, significantly surpassing the pellet-fed group (K1) with a survival rate of only 60.67%. Furthermore, the Vibrio bacteria abundance in the frozen Artemia sp. fed group was also relatively low compared to the pellet-fed group (13.33 CFU mL⁻¹). Although live and preserved Artemia sp. yielded better results than pellet feed, frozen Artemia sp. remains the most effective feed choice for optimizing early-stage L. vannamei aquaculture. Keywords: Artemia sp.; Feed; Litopenaeus vannamei; Postlarvae; Vibrio sp.
Tinjauan Aspek Mikrobiota Dan Analisis Fisikokimia Air (Studi Pada Waduk Lhok Batee Jeumpa, Bireuen) Putra, Dani Pratama
Lentera : Jurnal Ilmiah Sains, Teknologi, Ekonomi, Sosial, dan Budaya Vol. 8 No. 3 (2024): LENTERA, AGUSTUS 2024
Publisher : LPPM Universitas Almuslim

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Abstract

Waduk Lhok Batee di Gampong Seuneubok Lhong Kecamatan Jeumpa Kabupaten Bireuen saat ini sumber sumber air baku bagi masyarakat dan sekaligus tempat rekreasi. Penelitian ini bertujuan meninjau aspek mikrobiota, kualitas air dan analisis fisikokimia air pada Waduk tersebut dengan metode kombinasi kualitatif-kuantitatif. Penelitian ini dilaksanakan Januari - Februari 2023. Hasilnya, mikrobiota terdapat 12 famili dengan 13 spesies, dimana fitoplankton dengan jumlah famili terbesar (9 famili dan 10 spesies) dan zooplankton (3 famili dan 3 spesies). Keanekaragaman plankton termasuk dalam kategori sedang dengan indeks 1,0401. Salinitas terendah berada pada stasiun D, yaitu; 0,2 0 /00, sedangkan salinitas tertinggi berada pada stasiun A, yaitu; 0,3 0 /00. Kecerahan terendah berada pada stasiun D, yaitu; 1,30 m, sedangkan kecerahan tertinggi berada pada stasiun E, yaitu; 2,30 m. Suhu air yang paling tinggi berada pada stasiun C dan D yaitu 35,0 0C, sedangkan suhu paling rendah berada pada stasiun A, yaitu 32,5 0C. Nilai pH tertinggi berada pada stasiun C dan D yaitu 7,1 dan nilai pH terendah berada pada stasiun A yaitu 6,4. Intensitas cahaya tertinggi berada pada stasiun D yaitu 933 Lux dan intensitas cahaya terendah berada pada stasiun B yaitu 876 Lux. Kadar Dissolved Oxygen (DO) tertinggi pada stasiun A, D dan E sebesar 5,10 mg/L dan terendah pada stasiun B sebesar 4,80 mg/L. Kadar Biochemical Oxygen Demand (BOD) tertinggi pada stasiun C sebesar 12,25 mg/L dan terendah pada stasiun E sebesar 2,10 mg/L. Kadar Chemical Oxygen Demand (COD) tertinggi pada stasiun D sebesar 38,42 mg/L dan terendah pada stasiun A sebesar 22,10 mg/L.
The water quality and biological indicators of estuarine and marine waters affected by shrimp farming effluents in Bireuen Regency, Aceh Izwar, Akmal; Fauza, Saniar; Muktitama, Asih Makarti; Nugrahawati, Anis; Azhar, Rossy; Putra, Dani Pratama; Hakim, Syahirman; Musarady, Yoga
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.v12i3.24729

Abstract

Intensive whiteleg shrimp farming has the potential to degrade water quality through the accumulation of organic matter and nutrients in coastal ecosystems. This study aimed to evaluate differences in water quality between estuarine and marine waters in Bireuen Regency, Aceh, and to associate them with plankton and bacteria as ecological indicators. The research was conducted from July to August 2025 at three estuarine and three marine stations, analyzing physical, chemical, and biological parameters. Results showed that estuarine waters had higher TSS (9–16 mg/L), NH₃ (0.80 mg/L), BOD (4.6–7.1 mg/L), and COD (32–33 mg/L) than marine waters, associated with the presence of Nitzschia spp., Ceratium hirundinella, Brachionus rotundiformis, Aeromonas hydrophila, and Vibrio parahaemolyticus. In marine waters, although DO and salinity were more stable, eutrophication indicators included Noctiluca spp., copepods (Acartia, Oithona), V. alginolyticus, and Photobacterium damselae. These findings indicate that estuaries act as pollution hotspots while marine waters are also affected, emphasizing the need for ecosystem-based management of shrimp aquaculture effluents. Keywords: Estuary; Marine Waters; Plankton; Vibrio spp; Water Quality; Whiteleg Shrimp
The content of Pb and Cd in sediment and oysters in the mangrove area of Kuala Ceurape Bireuen and Udeung Village Pidie Jaya Azhar, Rossy; Husna, Asmaul; Izwar, Akmal; Nugrahawati, Anis; Putra, Dani Pratama; Kamal, Mustafa
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.v12i3.25112

Abstract

This study aimed to identify the concentration of heavy metals, lead (Pb) and cadmium (Cd), in sediments and oysters (Bivalvia), as well as to examine their relationship with mangrove ecosystem characteristics in Kuala Ceurape (Bireuen) and Udeung Village (Pidie Jaya). Heavy metal concentrations were analyzed using the Indonesian National Standard (SNI) methods, while mangrove species identification was conducted through field vegetation surveys. The results showed that Pb concentrations in sediments ranged from 3.67–15.29 mg/kg with an average of 7.38 mg/kg in Udeung and 8.65 mg/kg in Kuala Ceurape. Cd concentrations in sediments were higher, ranging from 4.69–11.95 mg/kg (average 7.38 mg/kg) in Udeung and 3.54–11.69 mg/kg (average 8.65 mg/kg) in Kuala Ceurape. In oysters, Pb concentrations were recorded at 4.36–9.53 mg/kg in Udeung and 2.16–6.71 mg/kg in Kuala Ceurape, while Cd showed greater accumulation, reaching 17.07–18.13 mg/kg (average 12.71 mg/kg) in Udeung and 1.96–11.21 mg/kg (average 5.16 mg/kg) in Kuala Ceurape. Compared to FAO/WHO and CCME standards, Pb levels in sediments remained below the threshold, but Pb and Cd in oysters and Cd in sediments exceeded safe limits. Vegetation identification indicated the dominance of Rhizophora apiculata, which plays an important role in heavy metal trapping. These findings suggest that mangrove ecosystems function as natural filters of heavy metals, yet bioaccumulation in edible biota such as oysters may pose potential health risks to coastal communities. Keywords: Bioaccumulation; Cd; Mangrove; Oyster; Pb; Sediment
Co-Authors Anis Nugrahawati Asih Makarti Muktitama Asmaul Husna Fauza, Saniar Hakim, Syahirman Irfannur, Irfannur Izwar, Akmal Musarady, Yoga Mustafa Kamal Radhi, M Rossy Azhar