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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Biologi Universitas Andalas Jurnal Biosense
Alponsin
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Medicine & Pharmacology Public Health

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EKSISTENSI MAKROZOOBENTOS DI PERAIRAN KAWASAN PEMBANGKIT LISTRIK TENAGA UAP (PLTU) TELUK SIRIH : Makrozoobentos Merina, Gusna; Junialdi, Rezi; Sari, Mistia; Mursyid, Ahmad; Alponsin; Aryzegovina, Reffi
JURNAL BIOSENSE Vol 8 No 2 (2025): Edisi April 2025
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas PGRI Banyuwangi, Jalan Ikan Tongkol No 01, Telp (0333) 421593, 428592 Banyuwangi 68416

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/biosense.v8i2.5092

Abstract

Operasional dari PLTU ini akan memberikan dampak terhadap kualitas air disekitarnya. Salah satunya gangguan biota air. Dengan adanya pembongkaran batu bara di laut sebagai bahan bakar dan juga adanya pembuangan air bahang ke laut, kegiatan ini tentunya berdampak terhadap makrozoobentos. Penelitian ini bertujuan untuk menganalisa kualitas air berdasarkan eksistensi komunitas makrozoobentos dan menganalisa factor fisika kimia air. Penelitian ini menggunakan metode survey dan pengkoleksian langsung. Lokasi pengambilan sampel terdiri dari 2 titik sampel yaitu di inlet dan outlet PLTU Teluk Sirih dengan 3 kali ulangan pada masing-masing stasiun. Hasil penelitian ditemukan makrozoobentos sebanyak 16 jenis terdiri dari jenis Bivalvia, 7 jenis Gastropoda, 2 jenis Malacostraca, dan 6 jenis masuk dari kelas Polychaeta. Kepadatan populasi bentos pada outlet adalah 429 ind/m2 sedangkan kepadatan pada inlet adalah 528 ind/m2. Indeks keanekaragaman pada titik outlet yaitu 2,815 dan inlet adalah 2,727. Berdasarkan indeks keanekaragaman makrozoobentos, maka kondisi perairan Teluk Sirih dalam kondisi baik dan stabil. Berdasrkan indeks kemerataan menunjukan makrozoobentos tersebar merata dengan nilai mendekati 1, dan indeks dominansi mendekati nol, artinya tidak ada makrozoobentos yang mendominasi. Kualitas air seperti kecerahan dan Total suspense Solid (TSS) menunjukan kualitas air bersih dan jernih, suhu didapatkan 24,6 dan 24,7oC, pH berkisar dari 7,76-8,18, Salinitas 19,2 ‰ dan Total Organik Karbon (TOK) 62,5-62,6 mg/L.
A Rapid Assessment: Insect Diversity Around the Stingless Bee Colony in Edufarm Universitas Andalas Ilmi, Miftahul; Henny Herwina; Dahelmi; Alponsin; Jasmi; Rusdimansyah
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.29-35.2025

Abstract

Insects dominate the animal kingdom, comprising nearly 80% of all animal species, with around 250,000 species found in Indonesia. Among these, stingless bees are a diverse group with over 60 genera. Some stingless bees are cultivated in meliponiculture, practiced around homes and plantations. This study aimed to assess insect diversity near stingless bee colonies in the Education Farm (Edufarm), Universitas Andalas, through a rapid assessment conducted over two days in May 2024. A transect was established with three U-shaped sub-transects surrounding a stingless bee colony. The modify quadra protocol sampling (honey bait traps, leaf litter, soil cores, and hand collecting) was used around the colony. The study identified 1153 individuals from 6 orders, 9 families, and 15 species of insects, with Formicidae from Hymenoptera being the most dominant. This research offers valuable insights into insect diversity around stingless bee colonies at Edufarm and can inform better management strategies for stingless bees and the ecological structure of surrounding environments.
Phylogenetic and Genetic Diversity of Local Durian (Durio spp.) from Siberut Island within Southeast Asia: Insights from rbcL and ITS Markers: Phylogenetic and Genetic Diversity of Local Durian from Siberut Island Alponsin; Mansyurdin; Nurainas
Journal of Tropical Life Science Vol. 16 No. 01 (2026)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.16.01.13

Abstract

This study examined the genetic diversity and phylogenetic relationships of Durio species from Siberut Island, Indonesia, within the broader Southeast Asian context, utilizing two molecular markers: rbcL and ITS. Leaf samples underwent DNA sequencing, followed by genetic distance estimation, phylogenetic reconstruction, and haplotype network analysis. The ITS marker exhibited high discriminatory power, effectively differentiating species and revealing distinct haplotype variation among populations, while resolving distinct clades with strong bootstrap support. Conversely, the rbcL marker, being highly conserved, provided reliable resolution at the genus level but was inadequate for distinguishing closely related species. A significant finding is the close genetic affinity between the wild variety Toktuk Geta from Siberut and D. singaporensis, a species previously recorded in Peninsular Malaysia. This association may indicate an unrecognized lineage or historically disjunct distribution, although confirmation necessitates broader sampling and additional markers. Substantial genetic differentiation was observed among D. zibethinus populations across Southeast Asia (FST = 0.49293), aligning with restricted gene flow among geographically distinct populations. These findings suggest that ITS is a suitable marker for species-level phylogenetics in Durio, whereas rbcL is more appropriate for genus-level identification. The unique genetic composition of Durio germplasm on Siberut Island highlights the conservation value of this region for plant genetic resources in the Mentawai Archipelago.
Co-Authors Dahelmi Gusna Merina, Gusna Henny Herwina Jasmi Junialdi, Rezi Mansyurdin Miftahul Ilmi, Miftahul Mistia Sari Mursyid, Ahmad Nurainas Reffi Aryzegovina Rusdimansyah