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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Bionature
Magdugo, Rexie P.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Library & Information Science

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Journal : Bionature

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Analysis of Fluctuative Asimetry in Oreochromis niloticus (Linnaeus) in Mainit, Surigao Del Norte, Philiphines Beltran, Darlo Novo M.; Magdugo, Rexie P.
Bionature Vol. 25 No. 2 (2024): Oktober-Desember 2024
Publisher : Jurusan Biologi Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v25i2.4523

Abstract

This study analyzes fluctuating asymmetry (FA) in body shapes of pond-raised and wild type of Oreochromis niloticus to assess morphological variations. Using Procrustes ANOVA, significant differences were found in directional (p < 0.0001) and fluctuating asymmetry between populations. Principal Component Analysis (PCA) revealed that for male Tilapia, cumulative variation reached 74.15%, with PC1 contributing 29.04%. For females, the cumulative variation was 74.99%, with PC1 accounting for 24.97%. Key landmarks affected included the snout tip in males and several features in females, such as the dorsal fin insertion and eye margin. These landmarks indicate major morphological differences between the two populations. Geographic isolation, food availability, and environmental conditions likely contribute to the observed variations. The study highlights the effectiveness of fluctuating asymmetry analysis in characterizing body shape differences in Tilapia, emphasizing the need to consider environmental factors and stressors when interpreting these morphological variations, which may have implications for reproduction and development.
Fractionated Polysaccharide Extracts From Codium Geppiorum O.C. Schmidt, 1923: Ftir And Bioactivity Evaluation Diaz, John Benedict B.; Maria Elma Q. Won; Felmer Latayada; Magdugo, Rexie P.
Bionature Vol. 25 No. 2 (2024): Oktober-Desember 2024
Publisher : Jurusan Biologi Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v25i2.4525

Abstract

This study investigates the Codium species from the class Chlorophyta, known for their bioactive polysaccharides. Hence, the two isolated polysaccharide extracts: crude polysaccharides (CPs) and acid polysaccharides (APs), with yields of 20.41% and 19.50%, respectively. Fourier-Transform Infrared (FTIR) analysis confirmed the presence of characteristic sulfated polysaccharides at 1220cm-1 -565cm-1 in APs and 880cm-1 in CPs. Antimicrobial activity was observed only in the APs, which effectively inhibited Micrococcus luteus (22±2 mm at 100 mg/mL), Pseudomonas aeruginosa (16.67±1.15 mm at 100 mg/mL), and showed trace activity against Saccharomyces cerevisiae (+=trace). The APs demonstrated significant antimicrobial effects against Gram-positive bacteria, indicating their potential for pharmaceutical and natural product applications. This work provides a foundational step toward generating innovative, seaweed antibacterial drugs, addressing the essential need for updated remedies in the peak of increasing antibiotic-resistant microorganisms.
Co-Authors Beltran, Darlo Novo M. Diaz, John Benedict B. Felmer Latayada Hebanada, Charisse T. Maria Elma Q. Won Sastrillas, Noel