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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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Morphological Variations in Mud Clam Polymesoda Erosa (Lightfoot) Using Fluctuating Asymmetry Analysis in La Union, Cabadbaran City, Agusan Del Norte, Philippines Sastrillas, Noel; Hebanada, Charisse T.; Magdugo, Rexie P.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 2 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v16i2.53289

Abstract

Kajian morfometri geometri dilakukan pada populasi Polymesoda erosa di La Union, Kota Cabadbaran, untuk mengetahui variasi morfologi dengan menggunakan analisis fluktuasi asimetri (FA). FA bertindak sebagai indikator yang dapat diandalkan mengenai tekanan ekologi dan ketidakstabilan perkembangan karena mendeteksi perubahan genetik dan lingkungan yang dihadapi suatu organisme. Sebanyak sembilan puluh (90) individu kerang lumpur dikumpulkan dan dianalisis secara acak. Sampel air dan tanah juga dikumpulkan untuk mengumpulkan data mengenai derajat variasi tubuh dan dampak faktor eksternal terhadap P. erosa. Hasil analisis menggunakan software SAGE menunjukkan adanya fluktuasi asimetri yang sangat signifikan (P 0,0001). Variasi yang signifikan dalam simetri individu, sisi, dan interaksi antara individu dan sisi sebagian besar bertanggung jawab atas variasi substansial yang terlihat pada spesies kerang lumpur. Khususnya, landmark 10 (dorsal margin maxima) dan 13 (anterior margin maxima) menunjukkan variasi yang mencolok. Untuk hasil kualitas air, katup internal kerang lumpur kemungkinan besar tidak terpengaruh atau terkena dampak minimal, namun kadar nikelnya tinggi. Kesimpulannya, fluktuasi asimetri P. erosa dapat dikaitkan dengan lingkungan yang tertekan. Faktor lingkungan yang tidak menguntungkan menyebabkan morfologi organisme berubah sehingga mempengaruhi simetrinya.
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