Journal of Tropical Marine Science (JTMS) is a peer-reviewed journal published by the Department of Marine Science Universitas Bangka Belitung which dedicated to published highest quality of research papers and reviews on all aspects of tropical marine such as oceanography, marine biology, marine conservation, marine culture, marine geology, marine instrumentation and etc. Publication in JTMS is without charge; all published articles are available online through open access. Authors should refer to Authors Guidelines for details on how to prepare their manuscript ; submission is performed via the online submission system. Publish schedule for each year: April and October. E-ISSN: 2623-2235 (https:/issn.brin.go.id/terbit/detail/1535505988)
Policy Implementation on the Standard Size of Blue Swimming Crab (Portunus spp.) Catched on the East Coast of Lampung
The government has issued a policy on the standard size of blue swimming crabs caught to support fisheries management, but it is difficult for business actors to comply with. This study aims to analyze the implementation of the Regulation of the Minister of Marine Affairs and Fisheries No. 7 of 2024 concerning Blue swimming crab Management on the East Coast of Lampung. The research uses a qualitative approach with a case study method, with in-depth interviews, participatory observations, focus group discussions, and documentation studies. The analysis of policy implementation examines fishermen's compliance with the blue swimming crab size standards set by the government. The results of the study show that the cause of the difficulty in implementing the blue swimming crab size provisions is the limited supervision and the lack of sanctions for violations. The orientation of fishermen's behavior still focuses on profits and the limitations of fishing technology that are not selective and destructive. The government must involve all business actors in the trading chain of blue swimming crab commodities to unify perceptions and increase fishermen's understanding of sustainable fisheries management policies on the East Coast of Lampung.
Copyright (c) 2026 Rizani , Indra Gumay Yudha, Endang Linirin Widiastuti , Novita Tresiana, Indra Gumay Febryano (Author) http://creativecommons.org/licenses/by-sa/4.0
Community Structure of Benthic Diatoms in the Mangrove Area of Sungsang IV Village, Banyuasin Regency, South Sumatra
Ekosistem mangrove memiliki peranan penting sebagai habitat mikroorganisme diatom bentik yang menjadi indikator kondisi perairan yang juga berperan sebagai produsen primer dan sangat menentukan ketersediaan energi bagi organisme trofik lebih tinggi. Kajian mengenai diatom bentik pada kawasan mangrove di zonasi vegetasi Rhizophora apiculata dan Nypa fruticans yang berada di perbatasan dua sistem perairan dengan tekanan antropogenik yang tinggi seperti di kawasan Desa Sungsang IV hingga saat ini belum ada. Penelitian ini bertujuan untuk menganalisis struktur komunitas (komposisi, kelimpahan, keanekaragaman, keseragaman, dan dominansi) diatom bentik pada bulan September 2025 di kawasan mangrove alami Desa Sungsang IV, Banyuasin. Pengambilan sampel dilakukan dengan metode survei lapangan menggunakan petakan kuadran pada dua stasiun pengamatan.pengukuran parameter fisika-kimia menunjukkan suhu pada air 31,00 °C dan sedimen 32,00 °C, pH di air 7,00 dan sedimen 5,00, salinitas air 17,00 ‰, oksigen terlarut (Disolved Oxygen/DO) 3,70-2,60 mg/L, nitrat 0,04 mg/L dan fosfat 0,70-0,79 mg/L. Kelimpahan diatom bentik mencapai sebesar 20,53×106 sel/cm³) pada stasiun Rhizophora apiculata dan kelimpahan sebesar 5,73×106 sel/cm³) pada stasiun Nypa. Rata-rata total kelimpahan pada kawasan ini 13,13×106 sel/cm³) . Komunitas diatom bentik pada kedua stasiun didominasi oleh diatom pennate dari ordo Naviculales dan ordo Rhopalodiales. Struktur komunitas pada kedua stasiun menunjukkan indeks keaneragaman dan keseragaman sedang dengan indeks dominansi rendah.
Copyright (c) 2026 Nola Fiqrya Arsyana, Riris Aryawati , Tengku Zia Ulqodry, Hartoni , Ana Ida Sunaryo Purwiyanto (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisis Konsentrasi Logam Berat Tembaga (Cu) pada Jaringan Organ Ikan Kakap dan Ikan Senangin Yang didaratkan di Wilayah Sungsang
Pencemaran logam berat dapat meningkat karena aktivitas manusia di pesisir dan berisiko menurunkan kualitas pangan hasil perikanan. Tujuan dari penelitian ini adalah untuk menentukan tingkat akumulasi kontaminan logam berat tembaga (Cu) pada jaringan organ dari ikan Kakap (Lutjanus russellii) dan ikan Senangin (Eleutheronema tetradactylum) yang diperoleh dari pengepul lokal di wilayah Sungsang IV pada biota laut yang menjadi komoditas pangan utama. Metode destruksi basah digunakan untuk menganalisis organ sampel dan hasilnya diukur menggunakan Spektrofotometer Serapan Atom (AAS). Hasil penelitian menunjukkan bahwa pola akumulasi Cu pada jaringan organ secara urutan yaitu Hati-Insang-Daging. Konsentrasi logam Cu tertinggi terdapat pada organ hati ikan Kakap yaitu bernilai 36,27 mg/kg, hal ini menunjukkan bahwa organ hati merupakan organ vital yang berfungsi sebagai detoksifikasi dan mensekresi bahan kimia seperti logam berat. Konsentrasi Cu paling rendah ditemukan pada jaringan daging, berkisar antara 0,14 dan 1,47 mg/kg. Hasil ini menunjukkan bahwa daging ikan yang dipasarkan masih sangat layak untuk dikonsumsi. Untuk menjaga keamanan pangan masyarakat secara berkelanjutan, kualitas lingkungan perairan perlu dijaga secara berkelanjutan.
Copyright (c) 2026 Renita Tri Wahyuni , Rozirwan, Wike Ayu Eka Putri, Gusti Diansyah, Isnaini (Author) http://creativecommons.org/licenses/by-sa/4.0
Deteksi eDNA untuk Mengukur Keragaman Genetik Perikanan yang Terdaftar dalam IUCN Red List di Perairan Muara Musi dan Muara Banyuasin
Perairan muara berperan penting sebagai habitat berbagai organisme akuatik, termasuk ikan yang berstatus terancam punah. Penelitian ini bertujuan untuk menganalisis kualitas parameter perairan serta struktur komunitas ikan berdasarkan IUCN Red List di Muara Sungai Musi dan Muara Sungai Banyuasin menggunakan pendekatan environmental DNA (eDNA). Penelitian dilakukan pada bulan Desember 2025 dengan metode purposive sampling. Hasil analisis eDNA metabacoding mendeteksi 8 spesies organisme akuatik di Muara Sungai Musi dan 22 spesies di Muara Sungai Banyuasin yang seluruhnya tercatat dalam IUCN Red List dengan status konservasi Least Concern, Near Threatened, Vulnerable, Endangered, dan Data Deficient. Pengukuran kualitas perairan menunjukkan nilai suhu 26,7 °C di Muara Sungai Musi dan 27,3 °C di Muara Sungai Banyuasin, salinitas 13,8 ppt dan 14,3 ppt, oksigen terlarut (DO) 5,4 mg/L dan 6,8 mg/L, serta pH 5,7 dan 5,8 yang menggambarkan karakteristik perairan muara. Nilai indeks keanekaragaman Shannon-Wiener (H’) di Muara Sungai Musi sebesar 1.70 dan di Muara Sungai Banyuasin sebesar 1.61 menunjukkan keanekaragaman sedang. Indeks keseragaman (E) sebesar 0.82 di Muara Sungai Musi dan 0.52 di Muara Sungai Banyuasin serta indeks dominansi (C) sebesar 0.23 dan 0.27 menunjukkan tidak adanya dominasi spesies secara ekstrem.
Copyright (c) 2026 Valentin Amelia, Melki Melki, Fauziyah, Ellis Nurjuliasti Ningsih, Rezi Apri (Author) http://creativecommons.org/licenses/by-sa/4.0
Karakterisasi Bakteri Patogen Vibrio Parahaemolyticus Pada Bawal Bintang (Trachinotus blochii) Dari Perairan Teluk Hurun, Lampung
Industri perikanan budidaya laut menghadapi tantangan besar dalam pengendalian penyakit yang disebabkan oleh bakteri patogen. Salah satu patogen yang sering menyerang ikan budidaya adalah Vibrio parahaemolyticus, yang dapat menyebabkan vibriosis pada ikan laut. Penelitian ini bertujuan untuk mengetahui karakter bakteri patogen Vibrio parahaemolyticus yang ditemukan pada ikan Bawal Bintang (Trachinotus blochii) di perairan Teluk Hurun, Lampung, serta menguji potensi antibakterinya. Karakterisasi bakteri V. parahaemolyticus meliputi uji media selektif CHROMagar Vibrio (CV), konfirmasi gen toxR dengan metode PCR, aktivitas hemolitik pada medium blood agar plate (BAP) uji biokimia dengan metode API 20E, uji patogenisitas secara in vio pada bawal bintang, dan uji sensitivitas terhadap antibiotik dan bahan antimikrobia. Hasil penelitian menunjukkan bakteri V. parahaemolyticus tumbuh pada media CAV dengan warna biru kemerahan, teramplifikasi gen toxR, hemolitik positif, morfologi koloni berwarna krem dengan tepi bergelombang, mampu memfermentasi beberapa karbohidrat, termasuk glukosa, mannitol, dan sukrosa. Uji patogenisitas in vivo pada ikan bawal bintang menunjukkan gejala klinis berupa lesu, peradangan pada sirip, dan perdarahan, yang menandakan bahwa Vibrio parahaemolyticus merupakan patogen penyebab vibriosis pada ikan. Uji antibakteri menunjukkan bahwa enrofloxacin adalah antibiotik yang paling efektif, diikuti oleh tetrasiklin dan oksitetrasiklin. Ekstrak jintan hitam menunjukkan hasil yang lebih bervariasi, meskipun tetap menunjukkan potensi antibakteri alami. Penelitian ini diharapkan dapat memberikan dasar yang lebih kuat untuk pengendalian vibriosis di perikanan budidaya serta mendorong pengembangan alternatif antibakteri alami.
Copyright (c) 2025 Rakhmat Hadi Saputra, Agus Setiawan, Sumardi Sumardi, Yudha Trinoegraha Adiputra, Ni Luh Gede Ratna Juliasih (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisis Sedimentasi Di Perairan Pesisir Kota Pangkalpinang, Provinsi Kepulauan Bangka Belitung
Perairan pesisir Kota Pangkalpinang mengalami pendangkalan yang disebabkan oleh tingginya aktivitas antropogenik maupun peristiwa alamiah, sehingga dapat merubah pola dan karakteristik sedimen pesisir pantai baik secara fisik ataupun kualitas. Upaya penanggulangan masalah tersebut salah satunya dibangun breakwater atau pemecah gelombang. Tujuan dari penelitian ini untuk mengetahui karakteristik sedimen, nilai Total Suspended Solid (TSS), dan nilai laju sedimentasi di perairan pesisir Kota Pangkalpinang menggunakan sediment trap. Penelitian ini menggunakan metode purposive sampling yaitu menentukan lokasi pengambilan sampel berdasarkan pertimbangan. Penelitian dilakukan pada bulan februari 2023 dengan 8 titik stasiun. Menggunakan dua jenis data, yaitu data primer dan sekunder. Berdasarkan penelitian yang telah dilakukan, didapatkan hasil karakteristik sedimen yaitu lempung, lempung berpasir, pasir dan pasir berlempung dengan nilai TSS tertinggi berada di stasiun 1,3,7,dan 8 yang melewati baku mutu air laut berdasarkan PP RI No. 22 tahun 2021, sedangkan untuk nilai massa dan volume laju sedimentasi berkisar 0,23-2,33 gr/cm2/hari dan 0,60 – 1,91 mg/cm2/hari.
Copyright (c) 2025 Hazimah Bakhitah, Aditya Pamungkas, Irma Akhrianti (Author) http://creativecommons.org/licenses/by-sa/4.0
Abundance Of Coral Reef Fishes In The Waters Of Gelasa Island, Central Bangka District
Gelasa Island has a coral reef ecosystem as a habitat for biota including coral reef fish, turtles, and others. The coral reef has been damaged due to anthropogenic activities. The purpose of the study was to determine the percentage of coral reef cover and the abundance of coral reef fish. The study was conducted in March 2024 in the waters of Gelasa Island. The method used was UPT (Underwater Photo Transect) for coral reefs and UVC (Underwater Visual Census) for coral reef fish, and the PAST 4.03 application to determine the diversity, uniformity, and dominance index. The results of the study showed that the percentage of coral reef cover in the waters of Gelasa Island was in the good category with an average of 52.42%. The abundance of coral reef fish was 49,114 ind/ha in the very rare category. The highest abundance of coral reef fish species was Neopomacentrus anabatoides, Pomacentrus alexanderae, and Caesio cunning. Based on the category, major fish have the highest abundance. The diversity value is in the moderate category, the uniformity value indicates an unstable community, and the dominance value is in the low category.
Copyright (c) 2025 Jemi Ferizal, M. Rizza Muftiadi, Aditya Pamungkas, Syahrin Imron Hidayat, Ervan Maulana, Muhammad Fajar Hidayatullah (Author) http://creativecommons.org/licenses/by-sa/4.0
Study Of Tourism Suitability And Ecological Carrying Capacity Of Minang Rua Beach In South Lampung District As An Ecotourism Destination
Tourism suitability analysis is important to determine the suitability of an area for beach recreation according to its ecological carrying capacity. This study aims to analyze the suitability and carrying capacity of the ecotourism area at Minang Rua Beach, South Lampung Regency, Lampung Province. Data collection of physical parameters of the beach was carried out using the field observation method. Data were analyzed using the tourism suitability index and area carrying capacity. The results showed that the ecotourism suitability index for beach recreation at Minang Rua Beach at station 1 was 2.875, at station 2 was 3.000, and at station 3 was 2.430. The level of suitability for beach recreation at Stations 1 and 2 was categorized as very suitable (S1), while at Station 3 was categorized as suitable (S2). The carrying capacity of the area at Minang Rua Beach for beach recreation activities at Station 1 was 119 people/day, at Station 2 was 364 people/day and at Station 3 was 158 people/day. The managers of this area are expected to be able to implement tourism activities according to their ecological carrying capacity so that their sustainability can be maintained.
Copyright (c) 2025 Doni Widyasmoro, Hari Kaskoyo, Abdullah Aman Damai, Nur Efendi, Endro Prasetyo Wahono (Author) http://creativecommons.org/licenses/by-sa/4.0
Struktur Komunitas Dan Status Konservasi Ikan Hasil Tangkapan Dengan Alat Tangkap Sero DiDesa Tanjung Binga Kabupaten Belitung
Penelitian ini bertujuan untuk mengetahui komposisi jenis, keanekaragaman, keseragaman, dominansi dan status konservasi pada Sero. Penelitian ini dilaksanakan pada bulan Januari 2024 di Pantai Secupak Desa Tanjung Binga. Hasil penelitian ditemukan yaitu 2.257 individu terdapat 53 spesies ikan dan 37 famili. Komposisi jenis per stasiun tertinggi di stasiun 1 nilainya 8,73% yaitu Selar crumenophthalmus, Sardinella albella, dan Apogonichthyoides melas. Stasiun 2 nilainya 10,87% yaitu Selar crumenophthalmus dan stasiun 3 nilainya 19,41% yaitu Siganus canaliculatus. Hasil penelitian komposisi jenis secara keseluruhan tertinggi yaitu Siganus canaliculatus nilainya 13,07% dan 295 individu. Komposisi jenis terendah nilainya 0,27% dan 6 individu, yaitu Echeneis naucrates dan Carangoides malabaricus. Keanekaragaman jenis ikan kategori Sedang, keseragaman kategori Rendah dan dominansi kategori Rendah. Status konservasi ikan yaitu kategori IUCN Redlist seluruh status berisiko rendah, kekurangan data dan Tidak dievaluasi. CITES seluruh ikan status Tidak Dievaluasi dan Permen KP No 1 Tahun 2021 seluruh jenis ikan status Tidak dievaluasi.
Copyright (c) 2025 Lonameta Lonameta, Andi Gustomi, M. Rizza Muftiadi (Author) http://creativecommons.org/licenses/by-sa/4.0
The Relationship Between Surface Water Quality And Mangrove Density On Pasaran Island, East Telukbetung District, Bandar Lampung City
The decline in mangrove land cover is a serious concern, because it can increase the possibility of sea water intrusion in coastal areas. This research aims to assess the relationship between surface water quality and mangrove density on Pasaran Island. The data obtained were analyzed using the multiple linear regression method to evaluate the simultaneous influence of mangrove density and sampling zone on various water quality parameters, including salinity, dissolved oxygen, electrical conductivity, total dissolved solids, and pH. The research results show that the denser the mangrove density, the lower the salinity level, but the density does not affect other water quality parameters, such as: dissolved oxygen, electrical conductivity, total dissolved solids, pH. The sampling zone also influences several water quality parameters, where zones closer to the coastline show higher parameter values ​​than transition zones or those further from the coast. External factors such as sea water intrusion and domestic waste pollution play a greater role in influencing water quality. The government should make efforts to conserve and rehabilitate forests and mangrove lands, especially in urban areas.
Copyright (c) 2025 Jundy Zaky Makarim, Slamet Budi Yuwono, Indra Gumay Febryano, Arief Darmawan, Irwan Sukri Banuwa (Author) http://creativecommons.org/licenses/by-sa/4.0
Access To Capital: Limitations For Small Fisherman In Gudang Lelang, Bandar Lampung City
Access to capital is very important in the development of small fishery businesses. This study aims to analyze the access to the capital of small fishermen in Bandar Lampung City Gudang Lelang. The research method uses a qualitative approach with a case study method. Data was obtained by in-depth interviews, participant observation, and document analysis; Furthermore, it was analyzed to explain the access to capital of small fishermen. The results of the study show that most small fishermen have difficulties accessing capital through banks. Most of them access non-formal capital, such as mobile lending, a door-to-door system known as bank keliling, loan sharks, Madani Mekaar National Capital, Syariah National Retirement Savings Bank, and Amartha. In addition, fishermen were used to borrowing money from skippers, subscription stalls, or their families to meet their needs at sea. They need the government’s support and mentoring in accessing bank capital to develop their businesses. Capital difficulties for fishermen’s businesses should be evaluated by banks to provide a more flexible system that is easily accessible.
Copyright (c) 2025 Darius Sesario Maloring, Abdullah Aman Damai, Erna Rochana, Maya Riantini, Indra Gumay Febryano (Author) http://creativecommons.org/licenses/by-sa/4.0
Peran Gracilaria sp. Sebagai Fitoremediator Dalam Mereduksi Limbah Pada Instalasi Pengolahan Air Limbah (Ipal) Tambak Udang Vaname (Litopenaeus vannamei) Super Intensif
Budidaya udang menghasilkan limbah organik sekiranya 48 – 70 kg dengan 30% berasal dari sisa pakan feses khususnya pada sistem budidaya super-intensif. Limbah tersebut dapat memberikan efek serius baik pada lingkungan perairan laut hingga keberlangsungan budidaya. Upaya yang dapat dilakukan untuk mengurangi beban limbah yakni dengan pengadaan IPAL dan pemanfaatan teknologi fitoremediasi dengan Gracilaria sp. Penelitian ini bertujuan untuk mengetahui efektivitas IPAL serta pemanfaatan Gracilaria sp. sebagai fitoremediator IPAL dan pertumbuhannya. Penelitian ini dilaksanakan pada bulan Oktober- November 2024 pada kolam sedimentasi IPAL tambak Ruguk secara insitu dengan penanaman Gracilaria sp. pada IPAL 2 dan analisis parameter kimia air dilakukan secara exsitu di laboratorium. Biomassa Gracilaria sp. didapatkan sebanyak 40.787 kg dengan laju pertumbuhan spesifik 376,75%. Konsentrasi rata-rata dari parameter utama kualitas air pada IPAL 1 dan 2 antara lain nitrat (1,03 mg/L dan 1,04 mg/L), fosfat (0,35 mg/L dan 0,28 mg/L), TAN (0,78 mg/L dan 0,25 mg/L), TOM (35,59 mg/L dan 35, 32 mg/L), TSS (175 mg/L dan 151,75 mg/L), dan alkalinitas (303 mg/L dan 251 mg/L). Nilai rata-rata efektivitas total pemanfaatan Gracilaria sp. sebagai agen fitoremediator sebesar 12%.
Copyright (c) 2026 Nurul Hasanah, Agus Setiawan, Munti Sarida, Gregorius Nugroho Susanto, Qadar Hasani (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisis Keberlanjutan Usaha Budi Daya Udang Vaname Di Desa Purworejo, Lampung Timur
Provinsi Lampung merupakan wilayah dengan produksi udang vaname terbesar ke-4 di Indonesia. Saat ini sektor budi daya dihadapkan dengan penurunan produktivitas. Di Kabupaten Lampung Timur mengalami penurunan sampai 56%. Penelitian ini bertujuan untuk menganalisis status keberlanjutan usaha budi daya udang vaname di Desa Purworejo. Penelitian ini dilaksanakan pada bulan September sampai dengan Desember 2024. Metode pengumpulan data dengan cara melakukan wawancara terhadap petambak. Analisis data menggunakan metode Multidimensional Scaling (MDS) dengan bantuan aplikasi Rapid Appraisal for Fisheries (Rapfish) dengan 5 (lima) dimensi penilaian, yaitu: ekologi, sosial, ekonomi, teknologi dan kelembagaan. Hasil penelitian menunjukkan bahwa kegiatan usaha budi daya udang vaname di Desa Purworejo di tinjau dari ke 5 (lima) dimensi termasuk dalam kategori kurang berkelanjutan. Pengembangan sistem pengelolaan limbah budi daya serta normalisasi saluran air perlu dilakukan untuk meminimalisir serangan penyakit. Peningkatan program pelatihan terhadap pembudidaya dan juga penerapan teknologi budidaya modern perlu dilakukan untuk meningkatkan status keberlanjutan usaha budi daya udang vaname di Desa Purworejo dari kategori “kurang berkelanjutan” menjadi minimal “cukup berkelanjutan” dalam jangka waktu menengah dan “berkelanjutan” dalam jangka panjang.
Copyright (c) 2026 Arif Muhtar, Indra Gumay Febryano, Agus Setyawan, Munti Sarida, Qadar Hasani (Author) http://creativecommons.org/licenses/by-sa/4.0
Kajian Kualitas Air Pada Sistem Budidaya Udang Dan Rumput Laut Terintegrasi Di Desa Ruguk, Kecamatan Ketapang
Penelitian ini mengevaluasi kualitas air budidaya tambak udang yang diintegrasikan dengan budidaya rumput laut di Desa Ruguk, Kecamatan Ketapang, Kabupaten Lampung Selatan. Tujuan penelitian ini adalah untuk menganalisis parameter kualitas air seperti nitrat, Total Suspended Solid (TSS), Total Organik Meter (TOM), fosfat, Total Amonia Nitrogen (TAN), dan alkalinitas pada tambak udang yang terintegrasi dengan rumput laut. Metode penelitian menggunakan purposive sampling di empat stasiun yang berbeda, meliputi kolam Instalasi Pengolahan Air Limbah (IPAL), muara sungai setelah IPAL, area budidaya rumput laut, dan tandon air. Pengambilan sampel dilakukan tiga kali selama periode budidaya. Hasil penelitian menunjukkan bahwa rumput laut berperan dalam memperbaiki kualitas air dengan menyerap bahan organik, nitrogen, dan fosfor dari limbah budidaya udang. Integrasi budidaya udang dan rumput laut memberikan hasil yang positif terhadap kualitas air dan keberlanjutan lingkungan perairan.
Copyright (c) 2026 Revilarita Arlanda, Agus Setiawan, Munti Sarida, GREGORIUS NUGROHO SUSANTO, Qadar Hasani (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisis Kualitas Air Sebagai Pemicu Eutrofikasi di Habitat Kerang Bulu (Anadara antiquata) di Pesisir Kabupaten Pesawaran
The blood cockle (Anadara antiquata) is an economically valuable marine species that depends on suitable water quality conditions in its habitat. This study aims to analyze water quality parameters that potentially trigger eutrophication in the habitat of the blood cockle in the coastal waters of Pesawaran Regency, Lampung Province. The study was conducted at three key harvesting sites—Teluk Hurun, Teluk Cikunyinyi, and Teluk Ratai—with sampling carried out four times during September–October 2024. The measured parameters included temperature, pH, salinity, dissolved oxygen (DO), transparency, depth, nitrite, ammonia, phosphate, and total organic matter (TOM). The results showed that several chemical parameters, such as nitrite (up to 0.11 mg/L), phosphate (up to 0.63 mg/L), and TOM (up to 39.14 mg/L), exceeded marine water quality standards based on Government Regulation No. 22 of 2021. The low N/P ratio (<1) at all sites indicates a high potential for eutrophication, with Teluk Ratai identified as the most critical site. These findings highlight the importance of continuous water quality monitoring to support the sustainability of blood cockle habitats and coastal ecosystems.
Copyright (c) 2026 Andy Sahalatua Gultom, Qadar Hasani, Gregorius Nugroho Susanto, Munti Sarida, Endang Linirin Widiastuti, Winarto Santosa (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisa Morfometri Juvenil Ikan Kerapu Cantang (Epinephelus fuscoguttatus X Epinephelus lanceolatus) Ukuran 10 Cm Hingga 12 Cm
Morfometri merupakan suatu penandaan ukuran bagian-bagian tertentu dari struktur badan ikan. Karakter yang digunakan dalam kajian morfometrik yaitu berat badan, panjang total, panjang standar, tinggi badan, lebar badan dan panjang operkulum. Penelitian bertujuan untuk mengetahui gambaran, variasi morfometri luar dan perbedaan signifikansi dalam morfometrik ikan kerapu cantang antar kelompok ukuran 10 hingga 12 cm. Hasil penelitian menunjukkan Terdapat variasi morfometrik juvenil ikan kerapu cantang dari ukuran 10 cm hingga 12 cm. Ukuran 10 cm menunjukkan panjang standar 85,54 mm, berat badan 20,43 g, tinggi badan 30,47 mm dan lebar badan 16,75 mm sedangkan untuk ukuran 11 cm menunjukkan panjang standar 97,73 mm, berat badan 30,03 g, tinggi badan 32,08 mm dan Lebar Badan 19,09 mm. Selanjutnya ukuran 12 cm menunjukkan panjang standar 104,90 mm, berat badan 35,99 g, tinggi badan 32,40 mm dan lebar badan 18,25 mm. Berdasarkan uji varian yang telah dilakukan terdapat perbedaan yang signifikan antar kelompok ukuran yang telah di bandingkan.
Copyright (c) 2025 Dicky Ananda Wahyudi, Kadek Lila Antara, Ni Nyoman Dian Martini (Author) http://creativecommons.org/licenses/by-sa/4.0
Analisis Perubahan Batimetri Di Perairan Matras Kabupaten Bangka
Matras Beach is one of the beaches in the Bangka Belitung Islands which is used as a tourist spot. A bathymetric map is a spatial data that contains depth information (bathymetry information) for a water area. This study aims to determine changes in bathymetry in the 2015, 2019 and 2021 timeframes. The method used in this study is a descriptive method with a purposive sampling data collection technique including primary data and secondary data. The results showed that in 2015-2019 the total change in depth that occurred at the cross section line was an average of 0.805 m and an average total shallowing of 0.165 m. In 2019-2020 the total depth change that occurred was an average of 7.145 m and an average total shallowing of 0.492 m. This change causes the formation of crevices around the breakwater (area A) and around the sea (area B) caused by tin mining.
Copyright (c) 2024 Afi Ayinah http://creativecommons.org/licenses/by-sa/4.0
Potensi Antikanker Pada Ekstrak Etanol Makroalga Caulerpa racemosa Menggunakan Metode Brine Shrimp Lethality Test (BSLT)
Caulerpa racemosa is one of the green macroalgae that is widely distributed in the coastal areas of Lampung Province and needs to be explored as a phytopharmaceutical ingredient because it is thought to have bioactive compounds. In this study, we also used taurine, which is known to prevent cell and tissue damage due to oxidative processes, to explore its potential as an anticancer. The initial stage of this research is phytochemical screening of 96% ethanol extract of Caulerpa racemosa and contains phenolic compounds . alkaloids, saponins, flavonoids, tannins, steroids and terpenoids. The toxicity test of Caulerpa racemosa ethanol extract and taurine used the BSLT method (Brine Shrimp Lethality Test). In this study, 7 concentrations were used, namely 0 ppm (control); 62.5; 125; 250; 500; 1000; and 2000 for both Caulerpa racemosa and taurine ethanol extracts with 5 repetitions. Meanwhile, the toxicity test results showed that the LC50 value of Caulerpa racemosa ethanol extract was 194.14 ppm and 170.69 ppm for taurine, this values are between 100 ppm - 1000 ppm of Caulerpa racemosa ethanol and taurine indicate that both material have potential anticancer activity with low toxicity.
Copyright (c) 2025 Devi Ardiyati Khasana, Endang Linirin Widiastuti, Nuning Nurcahyani, Agus Setiawan, Ni Luh Gede Ratna Juliasih (Author) http://creativecommons.org/licenses/by-sa/4.0
Perubahan Luas Dan Kerapatan Mangrove Di Kawasan Pesisir Kota Serang, Banten
Changes in the area and density of mangroves have a major impact on the sustainability of ecosystem functions in coastal areas. This study aims to analyze changes in the area and density of mangroves in Serang City, Banten. The method used is remote sensing through interpretation of Landsat 5 and Landsat 8 images with analysis of changes in the area and density of mangroves in 2011 and 2021. The research procedure was carried out by grouping NDVI values ​​into 3 vegetation classes: sparse, moderate, and dense. Furthermore, a ground check was carried out to test the level of data accuracy against mangrove canopy cover using the hemispherical photography method. The results showed that the level of image accuracy in 2021 was 90%. Based on this analysis, it is known that there has been a decrease in the area and changes in mangrove density in Sawah Luhur Village, while in Banten Village it has increased. In general, in the coastal area of ​​Serang City, there was a decrease in the mangrove area between 2011-2021 which reached 13.95 ha with the main decrease occurring in mangroves with sparse vegetation class (33.14 ha). In contrast, mangroves with medium and dense density categories increased to 19.19 ha. The decrease in mangrove area was due to abrasion, conversion into ponds, and illegal logging. The results of the analysis also showed that the correlation between NDVI values ​​and the percentage of canopy cover had a value of 0.696 which was included in the strong category.
Copyright (c) 2025 Indra Gumay Yudha, Risma Warni Rahayu, Darma Yuliana, Abdullah Aman Damai (Author) http://creativecommons.org/licenses/by-sa/4.0
Pengaruh Ekstrak Kulit Bawang Merah Terhadap Daya Hambat Bakteri Aeromonas hidrophilla Penyebab Penyakit Pada Ikan Secara In Vitro
Aeromonas hydrophila, commonly found in aquatic environments, is a Gram-negative bacterium frequently pathogenic to fish, causing diseases such as hemorrhagic septicemia or Motile Aeromonas Septicemia (MAS) in various freshwater fish species. This study investigated the antibacterial potential of red onion skin extract (Allium cepa L.) extracted using 99% absolute alcohol against the growth of Aeromonas hydrophila. The experiments were conducted with varying extract concentrations of 5%, 10%, 15%, 20%, and 25%, using tetracycline as a control. The results demonstrated that the red onion skin extract was able to inhibit the growth of Aeromonas hydrophila, as indicated by the formation of inhibition zones around the growth media. The average diameters of the inhibition zones produced by the extract at concentrations of 5%, 10%, 15%, 20%, and 25% were 1.21 mm, 2.43 mm, 3.36 mm, 5.70 mm, and 6.23 mm, respectively. Statistical analysis using a One-way ANOVA test with SPSS software showed a p-value of 0.000, indicating a significant difference among the red onion skin extract concentrations. Therefore, a Least Significant Difference (LSD) post-hoc test was performed to identify specific differences between the concentration treatments
Copyright (c) 2025 Andi Welly Wiliandhana Pranata, Ida Bagus Jelantik Swasta, Gede Iwan Setiabudi (Author) http://creativecommons.org/licenses/by-sa/4.0
Fishermen's Insurance Program In Bandar Lampung City Based On An Institution Perspective
The low sustainability of participation in the Fishermen’s Insurance Premium Assistance program shows that there is an Institution issue. The research intents to analyze the institution of the fishermen’s insurance program in Bandar Lampung City. This study used the case study method as a qualitative approach. Data were obtained by in-depth interviews, participant observation, and document analysis. Analysis is used to describe institutions based on situation, structure, behavior, and performance. The results of the study show that the efforts of the insurance program in Bandar Lampung City to protect fishermen have not been achieved in the second year. This occurred because the insurance participants did not pay the premium independently or at personal expense. The fishermen are not interested in participating in insurance, in spite of the premium cost being economical. Institutions are included in the BPAN program, which plays an important role in determining the continuation of fishermen’s insurance participation. The government should consider the punishment and agreements that must be submissive by fishermen to become effective regulation. In addition, the Social Security Administrator for Employment, as an insurance provider, must accommodate the simple insurance premium payments for fishermen.
Copyright (c) 2025 Nia Octavia, Supono Supono, Abdullah Aman Damai, Zainal Abidin, Indra Gumay Febryano (Author) http://creativecommons.org/licenses/by-sa/4.0
Distribution Institution Of Subsidized Fuel For Fishermen In Kangkung Village, Bandar Lampung City
The distribution of subsidized fuel for fishermen is largely determined by government regulations and policies. A well-implemented distribution institution ensures that subsidized fuel reaches fishermen appropriately. This study aims to analyze the institutionalization of subsidized fuel for fishermen in Kangkung Village, Bumi Waras District, Bandar Lampung City. The approach used is a qualitative approach with a case study method. Data collection through in-depth interviews, participatory observation and documentation studies. Data processing is carried out to analyze the institutionalization of subsidized fuel distribution for fishermen. The results of the study indicate that fishermen who use diesel fuel obtain subsidized diesel fuel at fishermen's fuel station according to the provisions set by the Downstream Regulatory Agency Committee Oil and Fuel. Not all fishermen can meet the required provisions. This causes there are still fishermen who cannot access subsidized diesel fuel for their business needs. Fishermen who use Pertalite also cannot freely access subsidized pertalite at the fuel station due to less supportive institutional governance. Thus, it is still necessary for the government to improve regulations so that distribution is more effective and controlled, so that subsidized fuel can be accessed evenly by small fishermen.
Copyright (c) 2025 Rostuti Lusiwati Sitanggang, Abdullah Aman Damai, Supono Supono, Maya Riantini, Novita Tresiana, Indra Gumay Febryano (Author) http://creativecommons.org/licenses/by-sa/4.0
Identifikasi Jenis Dan Kepadatan Sampah Laut Anorganik Di Pantai Muara Indah, Kabupaten Tanggamus, Provinsi Lampung
Accumulation of marine waste is a problem for tourist areas, one of which is due to the activities of densely populated settlements around the coast. The study aims to determine the type and density of inorganic waste at Muara Indah Beach, Tanggamus Regency. The method used is purposive sampling with a sampling technique using a transect line. Data analysis was carried out using a quantitative descriptive approach. The waste taken was macro-sized inorganic waste. The results of the study showed that plastic waste dominated the pieces of waste as much as 174.67 pcs with a density of 5.82 pcs/m2. The relative density value of plastic waste reached 84.25%. The lowest density was ceramic waste of 0.03 pcs/m2 with a relative density value of 0.48%. The government and surrounding communities are expected to work together to optimize waste management.
Copyright (c) 2025 Fredy Kurniawan, Hari Kaskoyo, Nur Efendi, Abdullah Aman Damai, Erna Rochana (Author) http://creativecommons.org/licenses/by-sa/4.0
Keberadaan Logam Berat Pb Dan Cu Pada Bycatch Perikanan Bagan Tancap Di Perairan Banyuasin, Sumatera Selatan
Fish and some groups of shrimps and crabs are one of the economically important biota that live in the waters. Accumulation of heavy metals in fish can affect the economic value of marine fishery products. There are several types of fish that contain heavy metals and are harmful when consumed by humans. The purpose of this study was to determine the dominant bycatch fish species and the accumulation of heavy metals Pb and Cu in the bycatch of stationary lift net Pesisir Banyuasin. This study was conducted in November 2019 and the dominant bycatch included japuh fish (Dussumieria acuta), tembang fish (Sardinella fimbriata) and parang-parang fish (Chirocentrus dorab). Samples were taken from one stationary lift net then analysed using SSA (Atomic Absorption Spectrophotometry) with 3 repetitions. The results of the analysis found the average concentration of heavy metals Pb and Cu in japuh fish was 0.65 mg/kg Pb; 0.16 mg/kg Cu. In tembang fish 0.70 mg/kg Pb and 0.03 mg/kg Cu. The parang-parang fish was 0.50 mg/kg and 0.17 mg/kg Cu. Based on the quality standards of SNI, Directorate General of Food and Drug Administration and FAO, the Pb and Cu concentrations of the three types of by-catch fish are still below the quality standard threshold and safe for human consumption.
Copyright (c) 2024 http://creativecommons.org/licenses/by-sa/4.0
Logam Berat Pb, Cu, Zn Dan Ni Dalam Air Di Ekosistem Lamun Pulau Pahawang
In coastal environments and the ecosystems, including seagrass ecosystems, heavy metals can lead to pollution. This study goal is to analyze the concentration of heavy metals in water based on safety standards for marine organisms. Water samples were collected from two locations: Jeralangan HamLet and Cukuh Nyai HamLet in Pahawang Island, Lampung, Indonesia. Water quality parameters were measured in situ. Heavy metals such Pb, Cu, Ni, and Zn were prepared using Wet digestion method and the concentrations were measured using Atomic Absorption Spectrophotometer (AAS) SHIMADZU AA-7000. At the same location, the highest concentration of was observed for Zn 0.406 mg/L at station 2, while the lowest concentration was recorded for Cu 0.019 mg/L. The concentration of heavy metals Pb, Cu, Ni and Zn in water has exceeded the quality standards for marine biota and marine tourism.These research can be used as a basis for future planning in the management of Pahawang Island’s coastal environment.
Toksisitas Ekstrak Daun mangrove Rhizophora stylosa dari Pulau Maspari Sumatera Selatan
The leaves of R. stylosa are a potential source of bioactive compounds for health and pharmacology. The composition of bioactive compounds in the leaves can be influenced by the ecological conditions and geographical location of this small island. This study aims to evaluate the toxicity and composition of bioactive compounds that are toxic in mangrove leaf extracts of R. stylosa from Maspari Island in coastal South Sumatra. A total of 1 kg of R. stylosa leaf samples were taken from Maspari Island then washed thoroughly to remove dirt, cut into small pieces, and dried in the sun using the indirect sunlight method covered with black cloth. The dried leaf samples were then pulverized into powder, and as much as 100 grams of fine powder was macerated with 96% ethanol solvent in a ratio of 1:10 (b/v). The maceration process was carried out for 1 x 24 hours, then the maceration solution was filtered and evaporated using a rotary evaporator at 60°C to become a concentrated extract. Toxicity tests were carried out using the Brine Shrimp Lethality Test (BSLT) method, while the identification of toxic bioactive compounds was carried out through phytochemical tests, total phenol tests, and GC-MS analysis. The test results showed that the LC50 value of R. stylosa leaf extract was 393 mg/mL (moderately toxic). The total phenol content was 442.82 (gGA/g), and the bioactive compounds identified included alkaloids, flavonoids, saponins, terpenoids, and acids such as Hexadecanoic acid, methyl ester, and trans-13-Octadecenoic acid, methyl ester.
Pengaruh Metode Filtrasi Terhadap Peningkatan Kualitas Fisik Air Muara Sungsang, Banyuasin
Water quality in the form of turbidity, colour, odour, taste and suspended residue are significant issues in Sungsang Banyuasin. The filter utilizes a filtration method to remove solid particles and contaminants. The research site consists of Sungsang, Sungsang II, and Sungsang III areas. The purpose of this study was to determine the water quality in the form of colour, taste, odour, turbidity, suspended residue, and salinity, as well as the ability of the filter to overcome water quality. Filtration consists of sedimentation, filter membranes, and filter media consisting of zeolite, silica, anthracite, ferrolite, activated carbon, and bioring. Water quality measurements used organoleptic to determine odour and taste, handrefractometer to measure salinity, direct reading to measure suspended residue, and spectrophotometry to measure colour and turbidity. The breech water was odourless and tasteless, and the suspended residue value ranged from 17-19 mg/L below the quality standard of 50 mg/L. Colour and turbidity values are greater than 50 on their respective scales and salinity values range from 11-13 ppt. The filtration process successfully reduced the values of suspended residue, colour, turbidity, and salinity.
Institution Of Fisherman's Joint Business Group In The Blue Swimming Crab Fishing Efforts In Kuala Teladas Village, Tulang Bawang Regency
The Fishermen's Joint Business Group is a local institution that plays a vital role in sustainable blue swimming crab fishing practices. This study aims to analyze the institution structure of the Joint Business Group in supporting sustainable blue swimming crab fishing efforts in Kuala Teladas Village, Tulang Bawang Regency. This research is a qualitative study whose data collection was carried out through in-depth interviews, participant observation, and documentation study. Data were analyzed to examine the institution and organization structure of the group. The study results show that the Joint Business Group is vital as a collective forum for fishermen to discuss, share information, and access crab resources. The group's simple organization structure with clear rights, obligations, and sanctions in the Articles of Association/Bylaws encourages active participation by members. The implementation of blue swimming crab management policies has brought positive changes to fishermen's behaviour, especially in the use of environmentally friendly fishing gear. However, significant challenges include economic pressures during the lean season, lack of alternative livelihoods, and weak supervision. Increasing the institution capacity of Joint Business Groups is carried out through collaboration between non-governmental organizations, fisheries extension, and the government. This is implemented through socialization, training, and mentoring in organization management, leadership, and business diversification. Grant assistance and alternative business training for fishermen have strengthened the economic position of fishermen. Increasing institution capacity through collaboration with various stakeholders is key to supporting the socio-economic sustainability of fishermen and sustainable blue swimming crab fishing efforts.
Copyright (c) 2025 Winarto Santosa, Qadar Hasani, Supono Supono, Abdullah Aman Damai, Novita Tresiana, Indra Gumay Febryano (Author) http://creativecommons.org/licenses/by-sa/4.0
Penerapan Konsep Blue Economy Pada Budidaya Udang Vaname Melalui Pemetaan Stakeholder Di Kecamatan Rawajitu Timur Kabupaten Tulang Bawang
The purpose of this study was to map the stakeholders involved in efforts to implement the concept of blue economy in vaname shrimp farming in East Rawajitu District, Tulang Bawang Regency. Data were collected using a qualitative approach through in-depth interviews and documentation studies. Data analysis was carried out descriptively to map the stakeholders involved based on their importance and influence. The results showed 21 stakeholders played a role consisting of private government, community and academics. Stakeholders who play a role as players are the Lampung Provincial Government, the Maritime and Fisheries Service, the Tulang Bawang Regency Government, the Tulang Bawang Regency Fisheries Service, which has a very strong interest and influence. Stakeholders who act as context setters are the Ministry of Marine Affairs and Fisheries, Ministry of Environment and Forestry, Commission IV of the House of Representatives, Lampung Marine Aquaculture Center, Mesuji Sekampung River Basin, Fish Quarantine Center for Quality Control and Safety of Fishery Products, INDOGAP Certification Institute, Seed Supplier, Shrimp Buyer, Feed and Medicine Company, P3UWL, KPBD, Yagasu, PPNI, LPMUKP, Universities have a large influence but low importance. The role of stakeholders in the subject category is shrimp farmers, who have a high interest but do not have a strong influence. Crowd stakeholders consist of the East Rawajitu District Government. Cross-sectoral cooperation must be carried out, so that the government's expectations towards applying the concept of blue economy or sustainable shrimp farming can be applied in protecting the environment while still increasing economic growth.
Pemetaan Stakeholder Dalam Peningkatan Kesejahteraan Masyarakat Nelayan Di Pulau Pasaran Kelurahan Kota Karang, Kota Bandar Lampung
The purpose of this study was to map the stakeholders involved in efforts to improve the welfare of fishing communities on Pasaran Island, Kota Karang Village, Bandar Lampung City. The data analysis method was carried out descriptively to map the stakeholders involved based on their interests and influence. The results showed that the players were the Lampung Provincial Government, Bandar Lampung City Government, Bandar Lampung City Fisheries Service, because these stakeholders have a very strong interest and influence. Stakeholders who act as context setters are the Ministry of Marine Affairs and Fisheries, Legislative Members, community leaders, NGOs, Goods and Services Providers, Police and TNI, Universities, because these stakeholders have great influence but low importance. The role of stakeholders with the subject category is small fishermen, namely labor fishermen and fish processing laborers, large fishermen and middlemen. Fishermen are stakeholders who have a high interest, but do not have a strong influence. Stakeholders in the crowd category are the Head of East Teluk Betung Sub-District, Head of Kota Karang Village, Neighborhood and RT officials in Kota Karang Village, because stakeholders, so that the expectations of the government for the provision of the program can be realized and the welfare of the fishing community will increase. In addition, community empowerment can also be carried out through developing the capacities of small fishermen and supporting information in the use of more developed fishing gear by conducting entrepreneurial training, developing skills and expertise for fishermen on Pasaran Island,