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All Journal Indonesian Aquaculture Journal Jurnal Medik Veteriner
Farman, Aditia
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Veterinary

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First Record of Anguillid Herpesvirus 1 Linked to a Mass Mortality Event in Shortfin Eel (Anguilla bicolor) in Indonesia Romadhona, Ekky Ilham; Widantara, Handang; Aslia, Aslia; Megawati, Novi; Ardiansyah, Arif Rahmat; Larassagita, Annisa Fitri; Dewi, Kiki Mariya; Farman, Aditia; Chaidir, Iding; Sujatmiko, Wisnu; Yaniharto, Dedy; Budiardi, Tatag; Aliah, Ratu Siti; Sutanti, Sutanti
Jurnal Medik Veteriner Vol. 8 No. 1 (2025): April
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol8.iss1.2025.134-143

Abstract

Anguillid herpesvirus 1 (AngHV-1), a member of the Alloherpesviridae family, is known to cause high mortality in both wild and farmed eels. Notably, no cases of AngHV-1 infection in Indonesia until June 2023, when a significant mortality rate exceeding 75% among cultured glass eels was documented in Bogor, Indonesia. This study investigated the outbreak by collecting 30 diseased fish from multiple cultured tanks to examine clinical symptoms, histopathological changes, and viral presence through PCR targeting the viral DNA polymerase gene. Hemorrhagic lesions in the abdomen and anal regions were the primary clinical symptoms. Histopathological examination revealed hyperplasia, fusion, and epithelial lifting of the gill secondary lamellae. PCR, using 394 bp primer specific for AngHV-1, confirmed 100% infection among the collected samples, indicating rapid viral transmission within the rearing environment. Phylogenetic analysis of partial DNA polymerase amino acid sequences showed that Indonesian AngHV-1 isolate is genetically diverse and shares similarities with strains from China, Taiwan, Canada, and several European countries, suggesting the emergence of a novel strain. This study highlights the urgent need for enhanced biosecurity measures to curb AngHV-1 spread in the Indonesian eel aquaculture sector.
GENETIC DIVERSITY, GROWTH AND CARRAGEENAN QUALITY OF KOTONI (RED SEAWEED) ACROSS THREE CULTIVATION SITES IN EASTERN INDONESIA Fadilah, Siti; Pong-Masak, Petrus Rani; Farman, Aditia; Ratnawati, Pustika
Indonesian Aquaculture Journal Vol 19, No 2 (2024): (December, 2024)
Publisher : Agency for Marine and Fisheries Extension and Human Resources

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.19.2.2024.167-178

Abstract

Indonesia is a leading global producer of seaweed, with kotoni seaweed highly valued for its high-quality carrageenan, an essential ingredient in various industries. This study aimed to evaluate the growth, carrageenan quality, and genetic diversity of kotoni seaweed cultivated at three distinct sites in eastern Indonesia: Banggai, West Halmahera, and Biak. The research involved cultivating kotoni seaweed over a 45-day period using the long-line technique, with growth monitoring conducted every five days and water quality parameters measured concurrently. Additionally, ex situ analyses of nitrate, phosphate, and ammonia were performed every 15 days. Carrageenan quality was assessed by measuring carrageenan content, gel strength, and viscosity, in addition to proximate composition analysis. Genetic diversity was evaluated using the cytochrome oxidase subunit 1 (COI) gene, involving DNA extraction, PCR amplification, and sequencing to determine genetic similarity across the cultivation sites. Significant differences in growth rates and carrageenan quality were observed across the three sites. West Halmahera exhibited the highest growth rate, making it the most favorable site for large-scale seaweed cultivation. Although Biak had a lower growth rate, it produced carrageenan with superior gel strength and viscosity, indicating higher product quality. Genetic analysis confirmed 100% similarity among the samples across sites. These findings underscore the importance of site-specific cultivation practices to optimize both yield and carrageenan quality, supporting the sustainability and economic viability of kotoni seaweed cultivation in Indonesia.
Co-Authors Ardiansyah, Arif Rahmat Aslia, Aslia Chaidir, Iding dedy yaniharto Dewi, Kiki Mariya Larassagita, Annisa Fitri Megawati, Novi Petrus Rani Pong-Masak Pustika Ratnawati Ratu Siti Aliah Romadhona, Ekky Ilham siti fadilah Sujatmiko, Wisnu sutanti sutanti Tatag Budiardi Widantara, Handang