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Beberapa Aspek Biologi Reproduksi Catfish Predator Indonesia (Wallagonia leerii Bleeker, 1851) di Sungai Sebangau Kalimantan Tengah Riza, Nurasiah; Butet, Nurlisa Alias; Kamal, Mohammad Mukhlis; Wibowo, Arif; Simon, Okta; Ansori, Ma'mun
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 11 No 2 (2021): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.2.276-284

Abstract

Ikan tapah (Wallagonia leerii) merupakan salah satu jenis ikan yang bernilai ekonomis penting dan terkenal karena ukurannya yang besar dan menjadikan ikan ini sebagai target utama penangkapan di Sungai Sebangau. Eksploitasi yang berlebihan dikhawatirkan dapat menyebabkan penurunan dan mengancam kelestarian ikan tapah yang penyediaannya masih bergantung pada alam. Tujuan dari penelitian ini adalah untuk menjelaskan biologi reproduksi ikan tapah yang meliputi nisbah kelamin, tingkat kematangan gonad, indeks kematangan gonad dan fekunditas. Total 96 ekor ikan tapah yang diperoleh menggunakan alat tangkap perangkap ikan dan seine net selama tiga bulan pada lima lokasi sampling di Sungai Sebangau. Hasil penelitian ini yaitu nisbah kelamin ikan tapah untuk semua sampel yaitu 1:0,9 dan berdasarkan uji Chi-square dengan selang kepercayaan 95% menunjukkan hasil yang mendekati pola 1:1. Nilai indeks kematangan gonad untuk jantan dan betina berkisar antara 0,110% – 0,522% dan 0,112% – 0,651%.Waktu pemijahan berlangsung dari bulan Desember hingga Januari. Total fekundittas dari 11 betina ikan tapah berkisar antara 2976 - 155501 telur dgan rata-rata 43334 telur.
SUSTAINABILITY WINDOW APPROACH FOR FISHERIES MANAGEMENT AT THE COASTAL AREA OF TERNATE ISLAND, NORTH MALUKU PROVINCE Faizal Rumagia; Mennofatria Boer; Rahmat Kurnia; Mohammad Mukhlis Kamal
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 3, NUMBER 2, APRIL 2020
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v3i2.5476

Abstract

Aims: This study aims to assess the value sustainable development opportunity of the coral reef fisheries activities in Indonesia from the ecological, economic, and social aspect, with a case study of coral reef fisheries at the coastal area of Ternate Island, using the Sustainability Window (SuWi) approach. Methodology and Results: The data was collected from statistical data from relevant institutions and literature study, which consists of ecological, economic and social data, and analyzed using the Sustainability Window approach to determine the sustainability of the fisheries development. The result shows that the Sustainability Window of the coral reef fisheries in the research area tends to move towards sustainable development, where the national policy in catch fisheries management has an impact on the sustainable development and management of coral reef fisheries at the coastal area of Ternate Island. Conclusion, significance and impact study: The Sustainability Window of coral reef fisheries at the coastal area of Ternate Island tends to move towards sustainable processes, with the width of sustainability window that not too narrow to the coral reef fisheries activities at the provincial and national levels. This condition attaches strings to a precautionary approach in policy decision for the management process, and consideration to the effect that can result from the development policy, both at the provincial and national level. The use of Sustainability Windows approach can provide a new simple way for assessing whether the development has been towards a more sustainable direction or not.
DINAMIKA POPULASI DAN STATUS STOK IKAN TEMBANG PUTIH (Escualosa thoracata) DI PERAIRAN KABUPATEN CIREBON BERDASARKAN SPAWNING POTENTIAL RATIO Adi Spy Supriyadi; Mohammad Mukhlis Kamal; Mennofatria Boer
BAWAL Widya Riset Perikanan Tangkap Vol 17, No 3 (2025): Desember 2025
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.17.3.2025.132 - 145

Abstract

The white sardine (Escualosa thoracata) is an essential small pelagic species supporting coastal fisheries in Java's northern waters. This study evaluated the population dynamics and stock status of the species in the coastal waters of Cirebon Regency, using the Spawning Potential Ratio (SPR) as a biological indicator. Field sampling was carried out from December 2024 to August 2025 at principal fishing grounds near the estuaries of Bungko Lor and Cisanggarung. Length–weight data, size distribution, and gonadal maturity stages were analyzed to estimate growth parameters, mortality rates, and key size indicators (Lc₅₀% and Lm₅₀%). The SPR was determined using a length-based approach. The catch was dominated by individuals measuring 66–80 mm total length (TL), with the highest frequency in the 70–74 mm TL class. The length–weight relationship followed W = 0.0000436 L2.6497 (R² = 0.8433), indicating negative allometric growth. The first capture size (Lc₅₀%) was 71.0 mm TL, slightly smaller than the size at first sexual maturity (Lm₅₀%) of 73.0 mm TL. The von Bertalanffy growth parameters were L∞ = 96.08 mm TL and K = 1.60 yr⁻¹. The exploitation rate (E) reached 0.76, exceeding the optimal level (≈ 0.5), while the SPR was 19%, below the recommended biological threshold of 20% needed to sustain recruitment. The white sardine population in Cirebon coastal waters is under heavy fishing pressure, leading to reduced reproductive potential.
Risk assessment of invasive species freshwater crayfish (Cherax quadricarinatus) in Lake Laut Tawar, Aceh Kasturi Ramdayani; Ali Mashar; Mohammad Mukhlis Kamal; Iwan Hasri
Depik Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to assess the distribution of Cherax quadricarinatus based on depth and evaluate its invasiveness using a risk assessment in Lake Laut Tawar, Central Aceh. The study was conducted at five stations representing various lake activities: Station 1 (One-One), Station 2 (Bewang), Station 3 (Gegarang), Station 4 (Mendale), and Station 5 (Dedalu). The methodology involved direct observation in the field followed by laboratory analysis. The results showed that 284 individuals were caught, consisting of 138 females and 146 males, with carapace lengths ranging from 20 to 76 mm. No consistent distribution of male and female carapace lengths was observed across all stations. The abundance of Cherax quadricarinatus in Lake Laut Tawar was classified as very abundant (20%) at One-One and Bewang stations, both at a depth of 5 meters. In conclusion, Cherax quadricarinatus significantly dominates the lake ecosystem, as indicated by its relative abundance at different depths across the study sites. This species also shows a high potential for invasion in freshwater lakes, highlighting the need for effective management strategies.Keywords:Cherax quadricarinatusInvasive spesiesLake Laut Tawar, Aceh
Keragaman ikan di Danau Cala, Kabupaten Musi Banyuasin Sumatera Selatan Jifi Abu Ammar; Mohammad Mukhlis Kamal; Sulistiono .
Depik Vol 3, No 3 (2014): Desember 2014
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.3.3.2147

Abstract

The aim of his studi was to evaluate the fish fauna in Danau Cala in dry season, transition season, and the tide season. The survey was conducted 3 times on July 2013, October 2013 and January 2014 as representative of dry, transition and tide seasons. The fish sampling was conducted by gillnets and fish traps. A total of 35 fish species were recorded during the study; 23 species in dry season, it was slot777 dominated by tembakang fish (Helostoma temminckii) from family Helosmatidae, Sepat siam fish(Trichogaster pectoralis) from Belontiidae family, and snakehead fish (Channa striata) of Channidae family. A total of 16 species were recorded on transitional seasons where baung fish (Hemibagrus nemurus) of the family Bagridae, and seluang fish (Rasbora sp) of the family Cyprinidae were predominant. In addition, 15 fish species were recorded on tide season which was dominated by baung fish (Hemibagrus nemurus) and tendon fish (Mystus sabanus) of family Bagridae
Mangrove ecosystem density mapping using Normalized Difference Vegetation Index (NDVI) Analysis in the Coastal Area of Pasekan District, Indramayu Regency Muhamad Fatah Nashrullah; Gatot Yulianto; Mohammad Mukhlis Kamal
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 2 (August, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i2.27125

Abstract

The mangrove ecosystem in the coastal area of Pasekan Subdistrict, Indramayu Regency, is experiencing environmental pressure due to coastal abrasion and land-use conversion, which affect vegetation density. This study aims to analyze changes in mangrove density during 2015–2025 using the Normalized Difference Vegetation Index (NDVI) method based on Landsat 8 and Sentinel-2 imagery. The analysis included image preprocessing, NDVI calculation, density classification, and spatial change analysis. The results showed that mangrove density area decreased by 29.2293 ha (9.38%), from 311.7671 ha in 2015 to 282.5378 ha in 2025. The decline mainly occurred in the very high-density class due to coastal abrasion and land conversion into ponds and settlements. Meanwhile, the increase in low to medium-density classes indicates mangrove regeneration and rehabilitation in several locations. In addition, Sentinel-2 imagery provided better spatial detail than Landsat 8 for mangrove density identification. Keywords: Mangrove density; Landsat 8; NDVI; Sentinel
Risk assessment of invasive species freshwater crayfish (Cherax quadricarinatus) in Lake Laut Tawar, Aceh Kasturi Ramdayani; Ali Mashar; Mohammad Mukhlis Kamal; Iwan Hasri
Depik Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to assess the distribution of Cherax quadricarinatus based on depth and evaluate its invasiveness using a risk assessment in Lake Laut Tawar, Central Aceh. The study was conducted at five stations representing various lake activities: Station 1 (One-One), Station 2 (Bewang), Station 3 (Gegarang), Station 4 (Mendale), and Station 5 (Dedalu). The methodology involved direct observation in the field followed by laboratory analysis. The results showed that 284 individuals were caught, consisting of 138 females and 146 males, with carapace lengths ranging from 20 to 76 mm. No consistent distribution of male and female carapace lengths was observed across all stations. The abundance of Cherax quadricarinatus in Lake Laut Tawar was classified as very abundant (20%) at One-One and Bewang stations, both at a depth of 5 meters. In conclusion, Cherax quadricarinatus significantly dominates the lake ecosystem, as indicated by its relative abundance at different depths across the study sites. This species also shows a high potential for invasion in freshwater lakes, highlighting the need for effective management strategies.Keywords:Cherax quadricarinatusInvasive spesiesLake Laut Tawar, Aceh
Co-Authors . Zairion Achmad Fahrudin Achmad Fahrudin Achmad Fahrudin Achmad Fahrudin Achmad Fahrudin Adi Spy Supriyadi Agoes Mardiono Jacoeb Agus Alim Hakim Agus Atmadipoera Agus Oman Sudrajat Ahmad, Aditiyawan Ali Mashar Ali Suman Ali Suman Ali Suman Aliati Iswantari Ansori, Ma'mun Apriana Vinasyiam Ariane Koch-Larrouy Arif Miftahul Aziz, Arif Miftahul Arif Wibowo Ario Damar Arlita, Kriswidya Ayesha Hafizh Ayu, Inna Puspa Beatrix M. Rehatta Beginer Subhan Booth, Hollie Bosman, Ofan Cahyanti, Wahyulia Dade Jubaedah Dade Jubaedah Darmawan, Aldo Dawi, Mario Raja Sani Deni Irawan, Deni Deni Radona, Deni Dewi SLKT Dwi Yuni Wulandari Efin Muttaqin Eko Prianto, Eko Elok Faiqoh Enan M Adiwilaga Endang Juniardi Endi Setiadi Kartamihardja Endi Setiadi Kartamihardja Fera Permata Putri, Fera Permata Forcep Rio Indaryanto G Yulianto Gadis Sri Haryani Gadis Sri Haryani Gatot Yulianto Gatot Yulianto Gilang Rusrita Aida Grin Tommy Panggabean Harahap, Wini Aafini J Haris Setiawan Helmy Akbar Hendrik Sombo Hollie Booth I Nyoman Suyasa Iis Diatin Iman Wahyudin Irin Iriana Kusmini, Irin Iriana Ismudi Muchsin Ismudi Muchsin Ismudi Muchsin Iwan Hasri Jabbar, Meuthia Aula Jifi Abu Ammar Jojo Subagja Kadarwan Soewardi Kasturi Ramdayani Kiagus Abdul Azis Kristanto, Anang Hari Kurniawan Kurniawan La Ode Syahlan S Sagala Larashati, Sekar Luky Adrianto Luky Adrianto Mala Nurilmala Mennofatria Boer Mia Setiawati Mirza Dikari Kusrini Mohamad Jakaria Muhamad Fatah Nashrullah Muhammad Arif Nasution Muhammad Nizar Muhammad Nizar Muhammad Nizar NEVIATY PUTRI ZAMANI Niken Tunjung Murti Pratiwi Nina Nurmalia Dewi Nugroho, Dwiyoga Nurlisa Alias Butet Nurseptiani, Sifa Oktavia, Nia Otong Zenal Arifin Prakoso, Vitas Atmadi Pratiwi, Niken TM. Prihatiningsih Prihatiningsih Pulungan, Ahyar Radityani, Fitri Afina Rahayu, Endah Sri Rahmat Kurnia RIDWAN AFFANDI Ridwan Affandi Ridwan Affandi Rika Astuti Risa Tiuria Riza, Nurasiah Rizsa Mustika Pertiwi Rohmah, Lailia Nur Ronny I. Wahju Rudhy Gustiano Rumagia, Faizal Sagala, La Ode Syahlan S Sakina, Edna Samir, Octavianto Shinta Pardede Sifa Nurseptiani Sigid Hariyadi Sigid Hariyadi Simon, Okta Singgih Afifa Putra Stuart J Campbell Sukmaraharja Tarigan Sulistiono Sulistiono Sulistiono Surjanto, Didiek Syamsiar, Syamsiar Syarifah Nurdawati T Tarsidin Taryono Taryono, Taryono Tatag Budiardi Thomas Hidayat Triyanto Triyanto Triyanto Triyanto Triyanto, Triyanto Utama, Darma Widoretno, Mey Ristanti Wildan, Dudi Muhammad Y. Rahmah Yanti Sinaga Yulia Fitrianingsih Yunizar Ernawati Yunizar Ernawati Yusli Wardiatno Yuspita, Ni Luh Eta