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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Kelautan Tropis
Ervia Yudiati
Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro
Earth & Planetary Sciences

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Alginate from Sargassum sp. Improve the Hematology Performance and Oxygen Tolerance Exposure of Lates calcarifer Ervia Yudiati; Ali Djunaedi; Nuril Azhar; Rabia O. Alghazeer
Jurnal Kelautan Tropis Vol 25, No 3 (2022): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v25i3.16217

Abstract

Indonesia's fish production is abundant, especially in aquaculture. Lates calcarifer is farmed fish species. The failure of L. calcarifer cultivation due to disease problems. We are utilizing a natural compound derived from tropical Sargassum sp. extracts, namely alginate. This study aims to determine and analyse the supplementation of alginate in the diet by oral administration to improve the fish's hematological performance and oxygen stress tolerance. There were one control and three treatments (2 g.kg-1, 4 g.kg-1, and 8 g.kg-1 alginate/feed). The experiment was a completely randomized design with three replications. Fish were reared in a 350 L fiber tank for 12 days at a density of 20 ind.tank-1. Stress oxygen tolerance was applied by rearing the 10 fish in 12 L fully plastic-wrapped containers. The parameters test analyzed were phagocytic activity and phagocytic index, red blood parameters which are hematocrit and hemoglobin. The survival rate after 5 hr anoxic exposure was also recorded. The best treatments were achieved at a dose of 6 g.kg-1 and 8 g.kg-1in all parameters, except the phagocytic index. The alginate addition at all oxygen stress treatments also performed a better survival rate compared to the control. Adding alginate to feed as feed supplementation by oral administration can boost hematological performance and higher tolerance from oxygen stress exposure.
Chloroform Fraction from Methanol Extract of Starfish Acanthaster planci Stimulates Catfish (Clarias sp.) Macrophage Immunomodulatory Activity Janib Achmad; Ervia Yudiati; Nuril Azhar; Rabia Alghazeer
Jurnal Kelautan Tropis Vol 26, No 1 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i1.16481

Abstract

Catfish (Clarias sp.) is Indonesia's most important and popular freshwater commodity, widely cultured and intensively grown. This study is aimed to find out the effects of the chloroform fraction from a methanol extract of Acanthaster planci on non-specific immunity in Clarias sp. Thin Layer Chromatography analysis of the methanol extract's chloroform fraction yielded three fractions: FrKl3.1, FrKl3.2, and FrKl3.3. The FrKl3.3 fraction of Acanthaster planci had a significant influence on Phagocytic Activity at doses of 0.1 (54.09 ± 8.99 %), 0.3 (48.16 ± 3.34 %), 0.5 (50.39 ± 5.71 %), and 0.7 mg/kg Body Weight (46.58 ± 0.37 %). At 0.5 mg/kg Body Weight (4.03 ± 1.40 %), the Phagocytic Index of FrKl3.2 was significantly higher than the control. At 0.5 mg/kg Body Weight (38.22 ±1.43 cell 106/ml) and 0.7 mg/kg BW (40.41 ± 1.92 cell 106/ml), the number of leukocytes/white blood cells was significantly higher than the control. Nitroblue Tetrazolium and Total Plasma Protein were not significantly different from the control. Based on the results,  the FrKl3.3 was leading on phagocytic capacity and number of leukocytes 
Morphometry of Limulidae (Oscar E. Brown) in Leidong, Sei Berombang, and Tanjung Tiram, North Sumatera Zhulian Hikmah Hasibuan; Ita Widowati; Ervia Yudiati; Syukur Syukur
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.28.1.105-112

Abstract

Limulidae (Horseshoe crab), or Mimi in the local name, are known; there are four species, namely Limulus polyphemus in North America and Asia, namely Tachypleus tridentatus, T. gigas, and Carcinoscorpius rotundicauda. In Indonesia, these species are protected by the Decree of the Minister of Forestry Number 12/KPTS-II/1987; meanwhile, illegal fishing still occurs. This study aims to identify Limulidae species and analyze Mimi's morphometric characteristics and distribution in North Sumatra to conserve the species.  This research was conducted using a quantitative descriptive method in Leidong, Sei Berombang, Tanjung Tiram - North Sumatera, from September to December 2021. Biometric measurements were performed on 98 Mimi, and the data were statistically analyzed using the Kruskal Wallis test, Mann-Whitney test, and Multinomial logistics. The results showed that Mimi in the study area was identified as Tachypleus tridentatus, T. gigas, and Carcinoscorpius rotundicauda. The most commonly caught was T. tridentatus at the Tanjung Tiram. Based on the maximum width of the prosoma and body length, the largest to most petite sizes are T. tridentatus at Leidong (10.31 cm), T. gigas at Leidong, and Sei Berombang (10 cm) and C. rotundicauda at Sei Berombang (7.56 cm) respectively. The cluster analysis based on 27 morphometric characters showed that T. tridentatus had almost the same characteristics as T. gigas, while C. rotundicauda had its features. It can be concluded that the largest to most petite sizes of Mimi in the study area were T. tridentatus, T. gigas, and C. rotundicauda, respectively.
Supplementation of Carrageenan (Kappaphycus alvarezii) for Shrimp Diet to Improve Immune Response and Gene Expression of White Shrimp (Litopenaeus vannamei) Ichoun Brawici Dhewang; Ervia Yudiati; Subagiyo Subagiyo; Rabia Alghazeer
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.28.2.161-172

Abstract

White shrimp (Litopenaeus vannamei) is one of the leading commodities in aquaculture. In recent years, the shrimp farming industry worldwide has suffered heavy losses due to disease. Increasing the immune system in shrimp using immunostimulants that are more environmentally friendly such as carrageenan from Kappaphycus alvarezii, seems promising. The purpose of this study was to determine the increase in immune response and gene expression in White shrimp after carrageenan supplementary diet treatment. This research was using a laboratory-scale experimental method with a factorial Completely Randomized Design (CRD) which was analyzed using One Way ANOVA. The treatments were negative control (without carrageenan addition), 5 g.kg-1, 10 g.kg-1, 15 g.kg-1, and 20 g.kg-1 carrageenan supplemented feed. All treatments were replicated three times. 180 L. vannamei with average weight of 6.5±0.66 g is used for research object Total Haemocyte count (THC), Phenoloxidase (PO), Superoxide Dismutase (SOD) activity, and Phagocytic activity/Index (PA/PI) were examined after feeding the White shrimp with diets supplemented with carrageenan in time series sampling. Immune-related gene expression (Lipopolisaccharide Glucan Binding Protein/ LGBP, Pro Pehnol Oxidase/ ProPO, and Lectin Type C/ Lectin) was evaluated by quantitative Real-Time PCR (qRT-PCR) at the end of experiment. Results indicated that the immune parameters directly increased according to the doses of carrageenan and time. The 20 g.kg-1 carrageenan treatments gave better results. three immune-related genes expression i.e LGBP, Lectin, and proPO were upregulated.  Therefore, carrageenan supplementation of shrimp feed can improve innate immunity as well as the expression of immune-related genes.
Co-Authors Achmad, M. Djanib Ali Djunaedi Ichoun Brawici Dhewang Ita Widowati Nuril Azhar Nuril Azhar Rabia Alghazeer Rabia O. Alghazeer Subagiyo Subagiyo Syukur Syukur Zhulian Hikmah Hasibuan