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Length-based Assessment of Jinga shrimp (Metapenaeus affinis) in CilacapWaters, Indonesia: Length-based Assessment of Jinga shrimp (Metapenaeus affinis) in Cilacap waters, Indonesia Harlyan, Ledhyane Ika; Zulfania, Herlian Putri; Bintoro, Gatut
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/awrryh48

Abstract

Cilacap Regency, Central Java, is a major fishing hub, and tropical shrimp, including Jinga shrimp (Metapenaeus affinis), are among the most valuable resources due to their high demand and economic importance. However, penaeid shrimp stocks in the Indonesian Fisheries Management Area (FMA) 573, including Cilacap waters, are reported to be overexploited. This study aims to assess the stock status of Metapenaeus affinis in Cilacap waters using length-based stock assessment methods, including the Length-Based Spawning Potential Ratio (LB-SPR) approach, to evaluate exploitation status relative to biological reference points. Sampling was conducted from December 2024 to March 2025, yielding 2,099 individuals collected from the Tegalkamulyan landing site. Biological parameters, including carapace length, body weight, sex, and gonad maturity stage, were analyzed. The results showed a negative allometric growth pattern (b = 1.5887). The length at first capture (Lc = 34.8 mm CL) was lower than the length at first maturity (L50 = 40.8 mm CL), indicating that most individuals are harvested before reproducing. The estimated spawning potential ratio (SPR) was 6%, confirming severe overexploitation. These findings highlight the urgent need for management measures, such as minimum size limits, improved gear selectivity, and seasonal closures, to ensure sustainable use of shrimp resources in Cilacap waters.
Co-Authors Agus Tumulyadi Agus Tumulyadi Agus Tumulyadi Aisyiyah Nurmarina Bestari Al Maky, Nuril Huda Ali Muntaha Ali Suman Ali Suman Alif Tulus Prasetyo Alvin Juniawan Amanda Rifan Fathoni Amira Bilhuda Andik Isdianto Andini, Arista Suci Aniek Sulestiani Aniek Sulestiani Anthon Andrimida, Anthon Anung Widodo Arief Setyanto Arief Setyanto Ariefandi, Muhammad Fikri Asadi, M. Arif Asmirijal, Amrey Syahnur Bilhuda, Amira Budi Nugraha Daduk Satyohadi Daduk Setyohadi Darmawan Ockto Sucipto Darmawan Ockto Sutjipto Darmawan Okto Sutjipto Destiana Hermanita Dewa Gede Raka Wiadnya Dewa Gede Raka Wiadnya Dhea, Luthfia Ayu Dhiafah Hera Darayani Didik Rudianto Dina Andriani Djoko Lelono, Tri Eko Sulkhani Yulianto Endang Yuli H. Erwin Rosadi Erwin Rosadi, Erwin Evellin Dewi Lusiana Evron Asrial Fathah, Aulia Lanudia Fetriyani Fetriyani Fransisca Sariuli Tobing Fuad Fuad Gondo Puspito Guntur H., Endang Yuli Hadiyah, Lisa Nur Hanifa Ramadhani Hardoko Hardoko Hari Eko Irianto Hasanah, Ap'idatul Hazmi Taris Abiseka Hidayah, Lisa Nur I Made Kawan I Made Kawan Irianies Cahya Gozali Irwan Jatmiko Jeremy, Laurentius Klemens Kamila, Firda Nikmatul Khairul Amri Kristina Marsela Kudrati, Amelinda Vivian Kurniawan, Mohammad Rizal Kusyairi, Achamad Lanudia Fathah, Aulia Ledhyane Ika Harlyan Lisa Nur Hidayah Mahardika Putri, Berlania Mahiswara, Mahiswara Marsela, Kristina Mihrobi Khalwatu Rihmi Mihrobi Khalwatu Rihmi Mochamad Arief Sofijanto Mohammad Mahmudi Mu'minin, Airul Amirul Muh. Arif Rahman Muhammad Arif Rahman Muhammad Ghozaly Salim Muhammad Kamil Muhammad Musa MUHAMMAD TAUFIK Nanik Retno Buwono Naufal Hilda Bahtiar Nico Rahman Caesar Nindi Nur Wulandari Nita Hellis Setyowati Nuhman Nuhman Nuhman Nuhman, Nuhman Nur Hidayah, Lisa Nurul Rosana Nurul Rosana, Nurul Oktasyah, Lutfi oktiyas muzaky Luthfi, oktiyas muzaky Paizar, Ariq Rahman Pangestu, Wanda Suryani Purba, Calvin Arauna Putri, Berlania Mahardika Rafif Zul Fahmi Rahman, Muhamad Arif Rahman, Muhammad Arif Rihmi, Mihrobi Khalwatu Rosalina Edy Swandayani Rudianto Rudianto Satyohadi, Daduk Setyanto, Arif Setyowati, Nita Hellis Sofijanto, Mochamad Arief Subagio, Hari Subianto, Agus Sucipto, Darmawan Ockto Sulastri Arsad Sulkhani Yulianto, Eko Sunardi Sunardi Sunardi Sunardi Supriatna Supriatna Swatama, Deny Tri Djoko Lelono Tumulyadi, Agus Tyas, Herlin Widi Aning Umi Zakiyah, Umi Utama, Andria Ansri Vian Dedi Pratama Vita Rumanti Kurniawati Waliyuddin, Achmad Widagdo, Supriyatno Widodo, Anung Wildan Alfarizi Wirastika Adhihapsari Wirastika Adihapsari Wulandari, Nindi Nur Yorarizka, Putri Devi Yusnaini Yusnaini Zulfania, Herlian Putri