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BIOLOGICAL ASPECT AND ABUNDANCE OF TRITON EPAULETTE SHARK (Hemiscyllium henryi) ENDEMIC TO TRITON BAY, KAIMANA, WEST PAPUA Prehadi, Prehadi; Kintani, Novia Indah; Sombo, Hendrik; Fahlevi, Arief Reza; Junaedy, Ahmad; Muttaqin, Ahmad Sabilul; Raweyai, Oktofianus Obaja; Kusumarani, Dheni; Raunsai, Jhoni Elias; Fenetiruma, Syamsudin; Malaihollo, Jantje Jacobus; Herettrenggi, Rosa; Widiarto, Santoso Budi; Subhan, Beginer; Ayuningrum, Diah
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 20, No 3 (2024): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.20.3.133-140

Abstract

Walking shark is one of elasmobranch that has been protected by the government of the Republic of Indonesia and can be found in the eastern seawaters of Indonesia. There are six species of walking shark, one of it is Triton Bay Epaulette Shark (Hemiscyllium henryi) which is endemic to the coastal waters of Kaimana. There are still lack of information regarding biology abundance and population of H. henryi, therefore it is necessary to do a study related to this species. This study aims to determine individual information and abundance of H. Henryi in Kaimana coastal waters during the observation in 2022 and 2023 based on density value and potential area. The method used is a census based on the Global Positioning System, through snorkeling and walking along the coastline, as well as observations of total length, wet weight, and sex in H. henryi which encountered during census. The total census track is 5.783 meters with a sweep of 2,46 Ha monitoring area. The density or abundance of H. henryi in 2022 is 1,2 ind/Ha and in 2023 is 2,4 ind/Ha. Total length of H. henryi ranged between 55–88 cm (Mean 70,6 cm ± SD 12,29). The length and weight relationship obtained W=0,0004L3,4343 with R2 value of 0,9526. The abundance trend of H. henryi at the coastal waters of Kaimana in the last two years has multipled by 2 times based on density value determining after being designated as a fully protected fish species.
Reproductive Biology of Scalloped Spiny Lobster (Panulirus homarus Linnaeus, 1758) in Palabuhanratu Bay: Biologi Reproduksi Lobster Pasir (Panulirus homarus Linnaeus, 1758) di Teluk Palabuhanratu Kintani, Novia Indah; Setyobudiandi, Isdradjad; Wardiatno, Yusli
Habitus Aquatica Vol 1 No 1 (2020): Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management
Publisher : Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/HAJ.1.1.1

Abstract

Lobster pasir (Panulirus homarus) adalah salah satu jenis lobster yang banyak dijumpai di Teluk Palabuhanratu. Pengelolaan dengan dasar aspek biologi reproduksi lobster diperlukan dalam menjaga kelestarian sumberdaya lobster pasir di alam. Penelitian ini bertujuan untuk menganalisis beberapa aspek biologi reproduksi dari lobster pasir (Panulirus homarus) di Teluk Palabuhanratu guna mengetahui musim pemijahan dan kondisi penangkapan lobster berkaitan dengan ukuran pertama kematangan seksual (Lm). Penelitian dilaksanakan pada Oktober 2016 hingga Maret 2017. Data yang diamati meliputi panjang karapas dan bobot lobster, selanjutnya dilakukan analisis laboratorium terhadap contoh lobster pasir betina bertelur. Lobster pasir yang diperoleh didominasi oleh dengan panjang karapas 45–50 mm. Ukuran pertama matang kelamin lobster betina sebesar 49,5 mm panjang karapas, dan ukuran pertama kali tertangkap lobster pasir betina dan jantan masing-masing 45,2 mm dan 45,7 mm panjang karapas. Selama bulan pengamatan ditemukan lobster pasir betina bertelur. Fekunditas lobster betina berkisar 25.000 hingga 151.000 butir per individu. Puncak musim pemijahan lobster terjadi pada bulan Oktober.