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All Journal Jurnal Teknologi Perikanan dan Kelautan
Gondo Puspito
Department of Fisheries Resource Utilization, Faculty of Fisheries and Marine Sciences, IPB University, Jl. Agatis, IPB Dramaga Campus, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Education Library & Information Science

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CORRECTION OF BLUE SWIMMING CRAB FOLDING TRAP ENTRANCE: KOREKSI PINTU MASUK BUBU LIPAT RAJUNGAN Defra Monika Nasution; Gondo Puspito; Didin Komarudin; Mustaruddin Mustaruddin; Deni Aulia
Jurnal Teknologi Perikanan dan Kelautan Vol. 16 No. 4 (2025): NOVEMBER 2025
Publisher : Fakultas Perikanan dan Ilmu Kelautan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24319/jtpk.16.416-427

Abstract

Folding crab traps are widely used by Indonesian fishermen because they are easy to construct and operate. Observations suggest that crabs frequently struggle to pass through the entrance channel, as their legs become entangled in the mesh. The spines on the sides of their bodies usually become entangled in the net threads because the entrance is too narrow. Consequently, the chance of crabs being trapped is very low. The objective of the study is first to determine the combination of slope angle and mesh size for the channel that allows for crabs to pass through easily. The study attempted to combine the traverse angles of 20°, 30°, and 40° with mesh sizes of 0.125", 0.35", and 1.25". The second objective is to determine the elliptical or rectangular entry gap that is easy for crabs to pass through. Laboratory-scale research and the research data were analysed parametrically using two-way ANOVA and Tukey's post hoc test. The results indicated the combination of an angle of 20° and a mesh size of 0.125" was the best configuration, because 26 individual of crabs could pass through the entry gap. The following combination, 20° (0.35") and 30° (0.125"), each passed through 25 crabs. A total of 369 individual of crabs (63.6%) could pass through the rectangular gap, while 211 individuals (36.4%) passed through the elliptical gap. The combination of a 20° angle and a mesh size of 0.125" with a rectangular entry gap is easier for crabs to pass through compared to other combinations.
FIRST CONFIRMED RECORD OF THE NEAR-THREATENED BOMBAY DUCK (Harpadon nehereus) IN CILACAP WATERS, INDONESIA: REKAMAN TERKONFIRMASI PERTAMA IKAN KADAL (Harpadon nehereus) YANG HAMPIR TERANCAM PUNAH DI PERAIRAN CILACAP, INDONESIA Sugeng Hartono; Novia Nurul Afiyah; Mustathi' Zulfa; Muhammad Browijoyo Santanumurti; Muyassar Hamid Abualreesh; Gondo Puspito; Muhammad Natsir Kholis
Jurnal Teknologi Perikanan dan Kelautan Vol. 17 No. 2 (2026): MAY 2026
Publisher : Fakultas Perikanan dan Ilmu Kelautan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24319/jtpk.17.278-290

Abstract

Identifikasi spesies yang akurat merupakan dasar penting untuk pengelolaan dan konservasi perikanan yang efektif di Indonesia, khususnya untuk spesies yang hampir terancam punah. Penelitian ini bertujuan untuk mengidentifikasi ikan kadal (Harpadon nehereus) dari perairan Cilacap melalui analisis morfologi dan molekuler, mencatat temuan pertamanya di perairan Cilacap, dan menyediakan dasar ilmiah untuk kajian populasi, pengelolaan perikanan, dan konservasi. Identifikasi morfologi dilakukan berdasarkan karakteristik fisik, seperti bentuk, warna, dan ciri-ciri umum untuk kajian morfometri dan meristik, dengan berpanduan pada buku identifikasi. Konfirmasi molekuler dilakukan melalui DNA barcoding pada gen mitokondria COI. Primer Fish F1 dan Fish R1 digunakan, bersama dengan metode sekuensing dideoksi Sanger. Subfamili dikonfirmasi dengan adanya jari-jari bagian dalam sirip perut yang hampir sama panjang atau sedikit lebih panjang daripada jari-jari bagian luar. Genus diidentifikasi berdasarkan sisik garis lateral yang membesar dan memanjang sebagai lobus median sirip ekor. Jari-jari utama sirip ekor tidak bersisik, dan tubuhnya pipih. Spesies diidentifikasi sebagai H. nehereus karena sirip dada melampaui pangkal sirip punggung. Urutan genetik yang diperoleh (aksesi PV688437.1) menunjukkan identitas sekitar 96,928–99,495% dengan referensi sejenis dalam basis data global dan membentuk klad yang sama dengan urutan H. nehereus lainnya dalam analisis filogenetik, yang mengonfirmasi identitas genetiknya. Sebagai laporan pertama tentang H. nehereus yang dikonfirmasi di Cilacap, temuan ini memberikan data dasar yang penting untuk pengkajian stok, pengelolaan perikanan, dan upaya konservasi di perairan Indonesia.
KONFIRMASI INTEGRATIF MORFOLOGI DAN DNA BARCODING IKAN SEBELAH YANG KEKURANGAN DATA DI PERAIRAN CILACAP, INDONESIA: INTEGRATIVE MORPHOLOGICAL AND DNA BARCODING CONFIRMATION OF THE DATA-DEFICIENT INDIAN HALIBUT IN CILACAP WATERS, INDONESIA Sugeng Hartono; Ani Haryati; Sahda Salsabila; Fajar Adiyanto; Purnama Sukardi; Gondo Puspito; Idris Abdulrahman
Jurnal Teknologi Perikanan dan Kelautan Vol. 17 No. 1 (2026): FEBRUARY 2026
Publisher : Fakultas Perikanan dan Ilmu Kelautan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24319/jtpk.17.126-138

Abstract

The Indian halibut (Psettodes erumei) is classified as data deficient on the IUCN Red List. Accurate species identification is a fundamental prerequisite for sustainable fisheries management and biodiversity conservation. This study aims to identify the Indian halibut landed from Cilacap waters, Indonesia, using an integrative morphological and molecular approach. Four specimens collected in March and June 2025 were analyzed using an integrated morphological and molecular approach. Morphological identification was based on detailed morphometric and meristic analyses, cross-referenced with standard taxonomic guides. Molecular identification involved DNA extraction, PCR amplification of the mitochondrial Cytochrome C Oxidase Subunit I (COI) gene, electrophoresis, sequencing, and comparison with global genetic databases using BLAST. Morphological characteristics aligned with the description of P. erumei, though significant morphometric differences from a historical reference suggest potential local phenotypic variation. DNA barcoding confirmed the identity with 100% sequence similarity to conspecifics from other Indo-Pacific regions (GenBank accession: PX599017.1). Phylogenetic analysis further placed the Cilacap samples within a genetically homogeneous cluster of P. erumei from across Indonesian waters. This research successfully contributes to Indonesia's biodiversity database and DNA barcode library for a commercially exploited yet understudied species. It also provides essential baseline data to inform stock assessments and conservation strategies in the region.
Co-Authors Ani Haryati Defra Monika Nasution Deni Aulia Didin Komarudin Fajar Adiyanto Idris Abdulrahman Muhammad Browijoyo Santanumurti Muhammad Natsir Kholis Mustaruddin Mustaruddin Mustathi' Zulfa Muyassar Hamid Abualreesh Novia Nurul Afiyah Purnama Sukardi Sahda Salsabila Sugeng Hartono Sugeng Hartono