Fitri Agustriani
Department Of Marine Science, Faculty Of Mathematics And Natural Sciences, University Of Sriwijaya, Indralaya 30862, Indonesia

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COI Gene Analysis of Asian Horseshoe Crab in Banyuasin Estuarine Waters, Sumatra, Indonesia Fatimah Fatimah; Apon Zaenal Mustopa; Fauziyah; Anna Ida Sunaryo Purwiyanto; Langgeng Priyanto; Nita Puspita Sari; Fitri Agustriani; Rozirwan Rozirwan
HAYATI Journal of Biosciences Vol. 30 No. 3 (2023): May 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.3.567-575

Abstract

There is limited study on DNA barcoding of horseshoe crabs in South Sumatra, Indonesia. The present study was the first to record horseshoe crabs' COI DNA barcoding in three localities of Banyasin estuarine waters. The nucleotide composition was in a strong adenine thymine bias (AT = 63.90%) with high haplotypic diversity (Hd = 0.858) relative to low nucleotide diversity (π = 0.0534). A total of 16 haplotypes were recorded, of which two were in Carat Cape, 4 in Makati Jaya, and 12 in the Banyuasin river estuary (BRE), and Hap 1 was a dominant type (62.5%). The population differentiation (FST) value was varied, and only in the comparison of BRE-Carat Cape was significant (FST = 0.637), while the gene flow (Nm) value in Makati Jaya-BRE was high (6.563). The neutrality test, Tajima's D (0.4142), and Fu's Fs values were negative (-0.492), suggesting these populations have experienced a current bottleneck or multiplication. Analysis of molecular variation (AMOVA) suggested that 68% was distributed within populations. The haplotype network, PCoA, and phylogenetic of COI DNA sequences clustered in three groups correspond to Carcinoscorpius rotundicauda, Tachypleus gigas, and Tachypleus tridentatus. This finding is a matter of concern for managing and conserving horseshoe crab species in Banyuasin estuarine waters.
PERUBAHAN GARIS PANTAI DI PESISIR KABUPATEN BANYUASIN PROVINSI SUMATERA SELATAN Fauzi Ananda Yudistira; Fitri Agustriani; Fauziyah .
Maspari Journal : Marine Science Research Vol 15, No 1 (2023)
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/maspari.v15i1.21153

Abstract

Lingkungan pantai merupakan lingkungan yang sangat dinamis. Perubahan garis pantai merupakan salah satu bentuk dinamisasi lingkungan pantai. Perubahan garis pantai merupakan suatu proses terus-menerus melalui berbagai proses alami di pantai yang meliputi pergerakan sedimen, arus menyusur pantai (longshore current), aksi gelombang permukaan laut dan penggunaan lahan.Tujuan dari penelitian ini adalah menganalisa perubahan garis pantai dengan menggunakan citra Landsat 4-5 dan Sentinel-2 di pesisir Banyuasin pada tahun 2005-2010-2015-2021 saat surut terendah dan saat pasang sebagai pembanding. Metode yang digunakan dalam penelitian ini adalah interpretasi citra satelit Landsat 4-5 tahun 2005-2010 dan Sentinel-2A tahun 2015-2021 menggunakan tumpang susun (overlay) untuk melihat perubahan garis pantai dan DSAS (Digital Shoreline Analysis System) untuk menghitung luas perubahan. Hasil penelitian ini menunjukkan di pesisir Kabupaten Banyuasin Sumatera Selatan selama kurun waktu 15 tahun (2005-2021) telah terjadi perubahan garis pantai 34,44 ha untuk proses akresi seluas 63,98 ha dan proses abrasi -29,54 ha dengan panjang garis pantai sepanjang 108,84 km. Kata kunci : Garis Pantai, Mangrove, DSAS, Banyuasin