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UJI LABORATORIUM KESESUAIAN UKURAN CELAH PELOLOSAN PADA BUBU LIPAT TERHADAP TINGKAT PELOLOSAN RAJUNGAN (Portunus pelagicus) Muhammad Arif Rahman; Ledhyane Ika Harlyan; Feni Iranawati; Riska Oktaviana; Imam Subali; Eko Sulkhani Yulianto
Jurnal Penelitian Perikanan Indonesia Vol 26, No 3 (2020): (September) 2020
Publisher : Pusat Riset Perikanan, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jppi.26.3.2020.159-166

Abstract

Rajungan (Portunus pelagicus) merupakan salah satu komoditas perikanan yang memiliki nilai ekonomis penting yang ditangkap dengan alat tangkap pasif, seperti bubu lipat. Penggunaan celah pelolosan pada bubu diharapkan mampu memenuhi ukuran rajungan yang diperbolehkan untuk ditangkap sebagaimana yang tertulis pada Peraturan Menteri Kelautan dan Perikanan 12/2020 (lebar karapas >10 cm). Tujuan dari penelitian ini adalah untuk mengetahui ukuran celah pelolosan yang sesuai untuk meloloskan rajungan dengan lebar karapas 10 cm serta mampu menahan rajungan dengan lebar karapas >10 cm. Sebanyak 30 ekor rajungan dengan lebar karapas 9-10,8 cm diuji cobakan terhadap tiga ukuran celah pelolosan yang berbeda (4,6 x 2,6 cm; 5 x 3 cm; dan 7 x 2,5 cm), dengan tiga kali ulangan. Uji coba dilaksanakan di laboratorium pada bulan Maret 2020. Hasil penelitian menunjukkan bahwa tidak ada perbedaan tingkat pelolosan rajungan pada ketiga ukuran celah pelolosan. Meski demikian, ukuran 4,6 x 2,6 cm diyakini merupakan ukuran yang paling efektif karena mampu meloloskan rajungan dengan lebar karapas 10 cm (46,9%), serta paling bagus dalam menahan rajungan dengan lebar karapas >10 cm tetap berada di dalam bubu. Percobaan lapang terhadap ukuran celah pelolosan ini pada beberapa perairan diperlukan untuk mengkonfirmasi penggunaannya pada perikanan rajungan.The blue swimming crab (Portunus pelagicus, BSC) is one of fishery commodities caught by passive gears, such as collapsible traps. The use of escape-vent on traps was supposed to comply with the legal size of BSC’s catch declared in the Ministerial Decree 12/2020 (i.e. >10 cm of carapace width). To determine an appropriate escape-vent size which is able to release BSC of 10 cm Carapace Width (CW) and to retain BSC of > 10 cm CW, 30 samples of BSC were tested on three different sizes of escape-vent (4.6 x 2.6 cm; 5 x 3 cm; and 7 x 2.5 cm) with three replications of each size. The results show that there was no significant difference of BSC’s escape rate among the escape-vent sizes. However, the size of 4.6 x 2.6 cm was assumed as the most effective escape-vent as it could release BSC of 10 cm CW (46.9%), and best to retain BSC of >10 cm CW inside the trap compared to other sizes. Field investigation might be needed to confirm the effect of the appropriate escape-vent size of collapsible trap on BSC fishery.
Klasterisasi Spasial Keragaman Spesies Tuna di Perairan Selatan Jawa Ledhyane Ika Harlyan; Abu Bakar Sambah; Feni Iranawati; Rani Ekawaty
Jurnal Perikanan Universitas Gadjah Mada Vol 23, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.58917

Abstract

Terjadinya penurunan produktivitas perikanan tuna di Perairan Selatan Jawa salah satunya disebabkan oleh adanya kondisi tangkap lebih yang terjadi akibat ketidaktersediaannya informasi geografis akurat terkait jumlah dan jenis spesies. Pendekatan spasial keragaman habitat spesies mampu memberikan prediksi akurat tentang jenis dan jumlah spesies pada suatu daerah penangkapan. Penelitian ini bertujuan untuk menghasilkan peta klasterisasi spasial keragaman spesies tuna berdasarkan data hasil tangkapan tuna dan data lokasi penangkapan di Perairan Selatan Jawa yang diperoleh dari kapal rawai tuna yang menangkap ikan di Samudera Hindia dan mendaratkan  tangkapannya di Pelabuhan Perikanan Samudera (PPS) Benoa pada bulan September-November 2019 dengan menggunakan beberapa analisis yaitu: (1) analisis keragaman spesies (Shannon-wiener index dan Menhinick index) dan analisis klasterisasi spasial (ward-hierarchical clustering dengan bootstrapped p-value). Berdasarkan kedua hasil analisis tersebut diperoleh tiga klaster pola sebaran daerah penangkapan tuna di Perairan Selatan Jawa yaitu: (1) klaster yang didominasi oleh spesies Thunnus albacares, (2) klaster yang didominasi oleh Thunnus obessus, dan (3) klaster dengan jumlah spesies tuna yang berimbang. Informasi mengenai ketiga klaster daerah penangkapan ini selanjutnya dapat digunakan sebagai rujukan penentuan pengelolaan perikanan tuna dan upaya pembatasan kapasitas penangkapan khususnya pada spesies tuna yang mengalami penurunan stok.
Peningkatan Pelayanan Ekowisata Badher Bank Melalui Pendampingan Manajemen Kelompok Muammar Kadhafi; Ledhyane Ika Harlyan; Tri Djoko Lelono; Sukandar Sukandar; Sunardi Sunardi; Abu Bakar Sambah; Eko Sulkhani Yulianto; Darmawan Ockto Sutjipto; Yasinta Rahmaningtyas; Tantowi Joan Fauzi
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 2, No 3 (2022): Abdira, Juli
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v2i3.168

Abstract

Tawangrejo fishers located in Binangun, Blitar are a group of fishers who conducted destructed fishing. Once fish population decreased, they believed that they must recover the fish population in the Brantas river, especially for a ray-finned fish, Puntius bramoides (Valenciennes, 1842) that live endemic, by forming Community based surveillance named POKMASWAS Fajar Bengawan. The POKMASWAS actively monitor and prohibit destructive fishing, also initiate ecotourism called Badher Bank such as river tracking, fish feeding and fishing. However, Badher Bank still has some constraints related to service management and infrastructure availability. Therefore, the aim of these activities was to increase the service of Badher Bank ecotourism by assisting the group management and building a rest facility for tourists. The results of these activities were the workshop and capacity building for POKMASWAS and the provision of a gazebo. Now, Badher Bank has been well managed with improved management skills and excellent ecotourism services.
Pembuatan Area Pembibitan Mangrove Desa Pangkahkulon-Gresik Defri Yona; Dhira Kurniawan; Ledhyane Ika Harlyan; Adrian Sakti Gangsar Pinilih; Siti Nur Khabibah; Yanida Azhari Julianinda
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 2, No 4 (2022): Abdira, Oktober
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v2i4.219

Abstract

Pangkahkulon Village is designated as the Ujungpangkah Mangrove Essential Ecosystem Area (KEE MUP) because the mangrove forest area in this area is a migration route and habitat for pelicans from Australia and is designated as a Ramsar site. Awareness to maintain the mangrove ecosystem is carried out by rehabilitating mangroves by the community supervisory group (POKMASWAS) Pangkahkulon. However, Pangkahkulon Village does not have a mangrove nursery area that is easily accessible yet, it takes approximately 40 minutes by boat to get to the nursery area which is located at the estuary of the Bengawan Solo River. Based on the results of discussions with Pangkahkulon Village officials, the right mangrove nursery area is in the village port area which is a strategic area for various community activities. This Community Service (PKM) activity will produce a mangrove nursery area according to its designation, training on nursery mechanisms from mangrove nursery experts as well as learning media for mangrove ecosystem functions. In addition, the output of this activity can help the village government plan to open a mangrove edupark in Pangkahkulon Village.
Microplastics in Organs of Commercial Marine Fishes from Five Fishing Ports in Java Island, Indonesia Defri Yona; Mangesti Reza Evitantri; Danu Setia Wardana; Dyah Ajeng Pitaloka; Diana Ningrum; Mochamad Arif Zainul Fuas; Yuniar Ponco Prananto; Ledhyane Ika Harlyan; Atsuhiko Isobe
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.27.3.199-214

Abstract

Microplastics have been found in the marine environment worldwide. Due to their very small size, it could be ingested by marine organisms from small size plankton to big size fish. The aim of this study is to assess the variability of microplastics in three different organs (gills, gastrointestinal tracts, and muscles) of commercial fishes in five different fishing ports in East Java Province, Indonesia. A total of 137 fish samples from 14 species were extracted to identify the types of microplastics. The microplastics found in the fish samples were mostly dominated by fiber, fragments, and a little quantity of film. In most species, the gills accumulated more microplastics compared to the gastrointestinal tracts and muscles. Gill is the organ that is highly exposed to the environmental conditions, therefore, it is more susceptible to the microplastic contamination. The results showed that there was an inverse relationship between the size of the fish and the occurrence of microplastics (P<0.05). Small size Sardinella lemuru contained more microplastics than bigger size fish such as Katsuwonus pelamis. The variability of microplastics found in this study showed important factors such as habitat, fish size, feeding behavior, and organ function which influenced the ingestion process of microplastic. This study also revealed the presence of microplastics were not only in the gills and gastrointestinal tracts of fish, but also in its muscles. Since this study targeted commercial fishes, further research is needed to know the possible impact on human consumption of fish containing microplastics.
Identifikasi Spesies Pendukung Perikanan Kembung dengan Alat Tangkap Purse Seine di Perairan Utara Probolinggo, Jawa Timur Dewa Gede Raka Wiadnya; Muhammad Arif Rahman; Ledhyane Ika Harlyan; Andi Khofifah Nurfadillah
Jurnal Kelautan Tropis Vol 26, No 1 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i1.16532

Abstract

Short mackerel is one of small pelagic species which is prioritized in fisheries management of East Java. The first steps to improve this fishery is to carry out stock assessment, the impact of fisheries on the environment, and effective management. This study aims to identify and categorize the species supporting the mackerel fishery in Fisheries Management Area (FMA) 712, especially those caught by purse seine vessels in IPPP Paiton, Probolinggo. This study found that there were two species of short mackerel, Rastrelliger branchysoma and R. kanagurta. There were 16 species interacting with this fishery, none of them were included in the Endangered, Threatened, and Protected (ETP) category based on the IUCN Redlist. These species are categorized into 2 groups, namely main secondary (5 species) and minor secondary (11 species), with the largest proportion being was goldstipe sardine. This information can be a start in the fisheries improvement program of short mackerel fishery in East Java. Future research related to the stocks, habitats and ecosystems of each species can be carried out to complete the information and support the formulation as well as implementation of fisheries improvement program of short mackerel fishery in East Java.  Ikan kembung merupakan salah satu jenis pelagis kecil yang menjadi prioritas dalam pengelolaan perikanan di Jawa Timur. Salah satu langkah awal untuk melakukan perbaikan perikanan ini adalah dengan melakukan penilaian terkait stok, dampak perikanan terhadap lingkungan, serta tata kelola atau pengelolaan yang efektif. Penelitian ini bertujuan untuk mengidentifikasi dan mengkategorisasi spesies pendukung perikanan kembung pada Wilayah Pengelolaan Perikanan (WPP) 712, khususnya yang ditangkap oleh kapal-kapal purse seine dari IPPP Paiton, Probolinggo. Hasil penelitian mendapatkan bahwa ikan kembung yang tertangkap terdiri dari kembung perempuan (R. branchysoma) dan kembung lelaki (R. kanagurta). Spesies pendukung atau yang berinteraksi dengan perikanan ini ditemukan sebanyak 16 spesies, dengan tidak ada spesies yang masuk dalam kategori Endangered, Threatened, and Protected (ETP) berdasarkan Redlist IUCN. Spesies pendukung ini dikategorikan kedalam 2 kelompok, yaitu sekunder utama (5 spesies) dan sekunder minor (11 spesies), dengan proporsi terbesar adalah ikan tembang. Informasi ini dapat menjadi awal dalam proses perbaikan perikanan kembung di Jawa Timur. Penelitian lain terkait stok, habitat, dan ekosistem masing-masing spesies dapat dilakukan untuk melengkapi informasi dalam mendukung rumusan dan pelaksanaan program perbaikan perikanan kembung di Jawa Timur.
Harvest Control Rules of Multispecies Scads (Decapterus spp.) Fishery in Blitar Waters, East Java Ledhyane Ika Harlyan; Shobriyyah Afifah Nabilah; Daduk Setyohadi; Muhammad Arif Rahman; Supapong Pattarapongpan
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 1 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v14i1.30688

Abstract

Highlight ResearchThe feedback harvest control rule resulted in the lowest allowable biological catch estimation than the surplus production models.  The feedback harvest control rule adapted the recent years of historical catch data.The surplus production models might result in over or under catch estimation, not considering the recent data.This multispecies fishery could not provide species specific data as surplus production models required; therefore, it might be better to use the feedback harvest control rule that has been validated for multispecies fisheries. AbstractScads fishery in Blitar waters is a multispecies fishery applying harvest control rules (HCRs) from conventional single-species approaches which technically, may not be applicable to employ in such mixed-species data composed from the multispecies fishery. The feedback HCR is an alternative validated harvest control rule that can be applied for a multispecies fishery. The aim of this study was to technically compare the application of the feedback HCR and conventional single species approaches in terms of estimating the future allowable biological catch (ABC). Therefore, in this study, ABC was estimated by applying three HCRs, the feedback HCR, and two conventional HCRs which was based on single-species approaches applying surplus production models, Schaefer Model and Fox model into catch and effort of scads fisheries data series of 2011 – 2020. The results showed that the ABC estimation of the feedback HCR was a half lower than that of both conventional models. It was biologically safer to apply the feedback HCR to set the annual total allowable catch (TAC) than the other two HCRs. The feedback HCR presented an initial step toward sustainably managing multispecies fisheries while dealing with data-limited conditions.
SPATIAL CLUSTERIZATION OF FISHING AREA IN BULU WATERS, TUBAN REGENCY Sari, Wahida Kartika; Kusuma, Andre Laila; Harlyan, Ledhyane Ika; Sambah, Abu Bakar; Adhihapsari, Wirastika
Journal of Environmental Engineering and Sustainable Technology Vol 10, No 02 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2023.010.02.1

Abstract

The various characteristics of catches and fishing gear provide distinct advantages for fishermen, but these characteristics can cause other problems, namely pressure on stock availability caused by an increase in the number of catches and the use of various types of fishing gear and the efficiency provided. There needs to be good management to handle this. The purpose of this research is to find out the clusterization (grouping) of fishing areas based on the catch and the type of fishing gear in which the results of this study are used as a reference in sustainable fisheries management. This research uses descriptive methods and case studies at PPP Bulu. The analytical method used is the Shannon-Wienner index of diversity (S-W,H'), Margalef richness (R') and clusterization. Clusterization was analyzed using the Hierachical Cluster Analysis (HCA) method to obtain the Euclidean distance. The results showed that the value of diversity has a range of 0-2 and the value of wealth has a range of 1-10. The results of the clusterization show that there are 3 clusters of fishing areas formed based on the catch, while no clusters of fishing areas are formed based on the type of fishing gear operated.
HARVEST CONTROL RULES OF DEMERSAL FISHERIES IN BRONDONG WATER, LAMONGAN, EAST JAVA Harlyan, Ledhyane Ika; Lianingrum, Yulis Dwi; Setyohadi, Daduk; Tumulyadi, Agus; Muntaha, Ali
Journal of Environmental Engineering and Sustainable Technology Vol 8, No 2 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2021.008.02.3

Abstract

Multispecies demersal fisheries management in Brondong waters have been managed by conventional single-species approach for determining catch quota or annual allowable biological catch (ABC). This might be impractical since a multispecies fishery should be managed by a multispecies fisheries management approach. The feedback harvest control rule (HCR) is a harvest control rule that has been validated and might be applied for a multispecies fishery. The aim of this study is to compare the conventional single-species approach and the feedback HCR in order to estimate the annual ABC. In this study, the annual ABC was calculated by applying two HCRs, the conventional single-species approach that applying the Schaefer surplus production model into the catch and effort of the dominant demersal fisheries data series of 2011 – 2020. The results showed that the Schaefer model provided the annual ABC higher than the feedback HCR estimation. Therefore, it was safe to apply the feedback HCR than the Schaefer model to determine the annual ABC. Under data-limited conditions, the feedback HCR might be an option to manage multispecies fisheries.
THE BIOLOGICAL ASPECTS OF DOMINANT SHARKS AND RAYS LANDED IN BRONDONG FISHING PORT, LAMONGAN, EAST JAVA Harlyan, Ledhyane Ika; Almawadah, Yulia Ainun; Lelono, Tri Djoko
Journal of Environmental Engineering and Sustainable Technology Vol 8, No 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2021.008.01.2

Abstract

Shark and ray fishery issues raised in Indonesia as some species have been listed in the IUCN red list. In relation to the conservation of some shark and ray species, critical information is required related to several biological aspects to assure its fishery sustainability. This study was conducted in Brondong Fishing Port in February – March 2020. Length, weight, and maturity level data were collected from 272 shark individuals and 267 ray individuals. Several analyses were performed, such as length-weight relationship analysis, sex ratios, and maturity level analysis. The study found 18 species listed in the IUCN red list were dominantly composed of Carcharias taurus and Dasyatis kuhlii. Both species have negative allometric, while the sex ratios showed that the ratio of the number of male and female individuals for shark and ray are 1:5 and 1:2, respectively. The maturity level of male individuals for Carcharias taurus pointed that 33% full calcification (FC), 17% non-full calcification (NFC), and 50% non-calcification (NC), while for Dasyatis kuhlii resulted that 66% FC, 28% NFC, and 6% NC. It is concluded that the biological aspects of the dominant species indicated that most individuals were in a critical state, thus it is required to monitor and control their fishing pressures.
Co-Authors Abu Bakar Sambah Abu Bakar Sambah, Abu Bakar Adrian Sakti Gangsar Pinilih Agustin, Rizky Fadilla Akbar, Hidayatul Aisytu Nurul Ali Muntaha Almawadah, Yulia Ainun Andi Khofifah Nurfadillah Arifin, Sunanto Atsuhiko Isobe Bambang Semedi Daduk Setyohadi Danu Setia Wardana Darmawan Ockto Sutjipto Darmawan Ockto Sutjipto Defri Yona Dewa Gede Raka Wiadnya Dewa Gede Raka Wiadnya Dhira Kurniawan Diana Arfiati Diana Ningrum, Diana Diza, Novia Fara Dwi Retnowati Dwi Setijawati Dyah Ajeng Pitaloka Eko Sulkhani Yulianto Evitantri, Mangesti Reza Farisa Mardiana Rahma Feni Iranawati Feni Iranawati, Feni Fransisca Sariuli Tobing Fuad Fuad Fuad, M.Arif Zainul Fuad, Mochamad Arif Zainul Gatut Bintoro Hidayati, Nurin Imam Subali Iranawati, Feny Kartikaningsih, Hartati Kasitowati, Rarasrumdyah Kusuma, Andre Laila Lathif, Adib Hisyam Lazimatun Nazifah Lee, Ming-An Lianingrum, Yulis Dwi Mahsuna, Inna Rohmatul Mangesti Reza Evitantri Masdian, Nuril Haq Bilqishima Maulana, Almaas Zain Mihrobi Khalwatu Rihmi Mochamad Arif Zainul Fuas Muammar Kadhafi Muh. Arif Rahman Muhammad Arif Rahman Mulyanto Oktavia, Yoan Prasetio, Rachmat Ramadhan Prastica, Brillian Pudji Purwanti Putra, Valeryan Ramana Rahman, Muhammad Arif Rahmanissa, Aulia Intan Rahmawati, Andira Rani Ekawaty Rhomadona, Wakhit Rihmi, Mihrobi Khalwatu Riska Oktaviana Sari, Wahida Kartika Shobriyyah Afifah Nabilah Siti Nur Khabibah Sukandar Sukandar Sunardi Sunardi Sunardi, Sunardi Supapong Pattarapongpan Syarifah Hikmah Julinda Sari Syarifah Hikmah Julinda Sari Syarifah Hikmah Julinda Sari Syarifah Hikmah Julinda Sari Syarifah Hikmah Julinda Sari, Syarifah Hikmah Tantowi Joan Fauzi TIWI NURJANNATI UTAMI Tri Djoko Lelono Tumulyadi, Agus Vita Rumanti Kurniawati Wahida Kartika Sari Wahida Kartika Sari Wakhit Rhomadona Wardhani, Niken Hendrakusma Wirastika Adhihapsari Yanida Azhari Julianinda Yasinta Rahmaningtyas Yulis Fitriani Yuniar Ponco Prananto Zahra, Afifah Zainal Fanani