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All Journal Torani Journal of Fisheries and Marine Science JFMR (Journal of Fisheries and Marine Research) ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
John Dominggus Kalor, John Dominggus
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences

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Makrozoobentos sebagai Indikator Biologis dalam Menentukan Kualitas Air Sungai Hubai/ Kali Jembatan Dua Kabupaten Jayapura Mantayborbir, Vyona; Agamawan, Lalu Panji Imam; Indrayani, Ervina; Wenda, Yukiur; Kalor, John Dominggus; Numberi, Yulindra Margaretha
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 7 No 2 (2024): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v7i2.4191

Abstract

Sungai Hubai/ Kali Jembatan Dua adalah salah satu Sungai yang bermuara di Danau Sentani. Informasi keanekaragaman makrozoobentos sebagai bioindikator kualitas air Sungai ini masih sangat minim bahkan belum ada. Penilaian status kualitas air di Sungai Hubai adalah langkah krusial dalam menjaga dan memelihara kesehatan lingkungan, serta pengelolaan ekosistemnya, demi kesejahteraan masyarakat setempat terutama sungai ini bermuara pada Danau Sentani. Penelitian ini menggunakan metode deskriptif kuantitatif. Hasil yang diperoleh dari penelitian ini adalah jenis makrozoobenthos yang terdiri dari 2 kelas, yaitu kelas Gastropoda (1 genus) dan Insecta (2 genus). Kelimpahan di semua stasiun adalah sama, yaitu 1 ind/m2. Indeks keanekaragaman (H') memiliki indeks keanekaragaman dalam kategori keanekaragaman rendah. Indeks keseragaman (E') memiliki indeks keseragaman dengan kategori keseragaman komunitas rendah. Indeks dominasi (D) tidak memiliki dominasi yang bervariasi. Nilai status kualitas air berdasarkan tiga stasiun penelitian menunjukkan bahwa perairan Sungai Jembatan, Kota Jayapura termasuk dalam kategori tercemar berat dan beberapa parameter kualitas air yang diamati dalam penelitian telah melebihi batas standar kualitas yang telah ditetapkan. Kesimpulan dari penelitian ini adalah bahwa Sungai Jembatan Dua, Kota Jayapura, telah tercemar berat akibat limbah penambangan emas. Indikator kualitas air, termasuk makrozoobenthos, menunjukkan keanekaragaman dan keseragaman komunitas yang rendah. Beberapa parameter kualitas air juga melebihi standar kualitas, mengkonfirmasi kondisi polusi yang serius.
Analysis of abundance and ditribution of parrotfish (Leptoscarus vaigiensis) in seagrass ecosystems in Muris Besar Village, Demta District, Jayapura Regency, Papua Runtuboi, Dirk Y. P.; Kalor, John Dominggus; Paiki, Kalvin; Jaban, Robert D; Indrayani, Ervina; Mantayborbir, Vyona; Izaac, Fransina A
Depik Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.37510

Abstract

Parrotfish is the speciesLeptoscarus vaigiensis. Leptoscarus vaigiensisis a species of fish found in Muris Besar Village's waters, and it lives in seagrass meadow areas. This study aims to find parrot fish species abundance and distribution (Leptoscarus vaigiensis) in seagrass environments. Benefits from this research are anticipated to include supporting data and information, particularly for the fisheries industry in this water area, and significant information for preserving seagrass ecosystems as a specialized habitat for parrotfish (Leptoscarus vaigiensis). The Water Visual Census (UVC) is used to assess parrot habitat in the waterways. Direct observation at the research site is used to learn about and gather data about the object under study. Counting stationary points, transects, timed swimming at stationary sites, divers remaining in one location and surveying a specified radius for a certain amount of time are the major categories into which UVC methods fall. The research locations are Waipa Beach, Ugape Cape, Augara Beach, Muris Besar Village, Demta District, Jayapura Regency, Papua. The highest abundance value is at station 1, with an abundance value of 1,300 ind/m, while the lowest is at station 2, with an abundance value of 700 ind/m. Leptoscarus vaigiensis has a species distribution with a morality index value between 0.33 and 0.50. The distribution of parrotfish (Leptoscarus vaigiensis) in seagrass ecosystems is categorized as comparable according to the criteria for distribution patterns.Keywords:DistributionParrotfishMuris Besar VillagerAbundanceSeagrass beds
Length-Weight Relationship and Condition Factor of Yellowfin Tuna (Thunnus albacares) from Demta Coast, Jayapura Regency, Papua Kalor, John Dominggus; Paiki, Kalvin; Rumahorbo, Basa T.
Torani Journal of Fisheries and Marine Science VOLUME 6 NOMOR 1, DESEMBER 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/torani.v6i1.23666

Abstract

The population of Thunnus albacares yellowfin tuna from the Scombridae family is very abundant in North Papua Waters (WPP 717). This study aims to analyze the parameters of population dynamics based on the long-weight relationship and condition factors on Thunnus albacares in Demta Coastal Waters, Jayapura Regency. Fish data collection uses passive and active fishing methods using gill nets, handlines, and long line fishing through fishing activities by traditional fishermen during April - June 2022. Data analysis uses analysis length-weight relationship and condition factor. The results of this study found that the population structure of yellowfin tuna (T. albaceras) was very diverse in the waters of North Papua, with a negative allometric growth pattern (b < 3), i.e. the growth of body length was faster than weight. The condition factor averaged 1.1302 with a maximum of 1.4718 and a minimum of 0.7028. Where in the gonadal maturity period morphometric adaptation occurs, weight growth becomes faster and body length becomes slower.
Analysis of abundance and ditribution of parrotfish (Leptoscarus vaigiensis) in seagrass ecosystems in Muris Besar Village, Demta District, Jayapura Regency, Papua Runtuboi, Dirk Y. P.; Kalor, John Dominggus; Paiki, Kalvin; Jaban, Robert D; Indrayani, Ervina; Mantayborbir, Vyona; Izaac, Fransina A
Depik Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.37510

Abstract

Parrotfish is the speciesLeptoscarus vaigiensis. Leptoscarus vaigiensisis a species of fish found in Muris Besar Village's waters, and it lives in seagrass meadow areas. This study aims to find parrot fish species abundance and distribution (Leptoscarus vaigiensis) in seagrass environments. Benefits from this research are anticipated to include supporting data and information, particularly for the fisheries industry in this water area, and significant information for preserving seagrass ecosystems as a specialized habitat for parrotfish (Leptoscarus vaigiensis). The Water Visual Census (UVC) is used to assess parrot habitat in the waterways. Direct observation at the research site is used to learn about and gather data about the object under study. Counting stationary points, transects, timed swimming at stationary sites, divers remaining in one location and surveying a specified radius for a certain amount of time are the major categories into which UVC methods fall. The research locations are Waipa Beach, Ugape Cape, Augara Beach, Muris Besar Village, Demta District, Jayapura Regency, Papua. The highest abundance value is at station 1, with an abundance value of 1,300 ind/m, while the lowest is at station 2, with an abundance value of 700 ind/m. Leptoscarus vaigiensis has a species distribution with a morality index value between 0.33 and 0.50. The distribution of parrotfish (Leptoscarus vaigiensis) in seagrass ecosystems is categorized as comparable according to the criteria for distribution patterns.Keywords:DistributionParrotfishMuris Besar VillagerAbundanceSeagrass beds
NITRATE AND PHOSPHATE DISTRIBUTION RELATED TO FITOPLANKTON ABUNDANCE IN EAST YAPEN COASTAL WATER Kalor, John Dominggus; Paiki, Kalvin
JFMR (Journal of Fisheries and Marine Research) Vol. 1 No. 2 (2017): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2017.001.02.3

Abstract

The waters of Yapen Timur in Yapen Islands, Papua are semi-open waters with high potential natural resources. Recent research on chemical and biological parameters more specifically of nutrient concentration and phytoplankton abundance is still very limited. The study aimed to observe the concentration of nutrients (nitrates and phosphates), and their relation with the abundance of phytoplankton in Yapen Timur waters, was conducted on January 5Th to February 5th, 2016. Using explorative method and purposive sampling method, with 15 sampling points. Data analysis using Spectrophotometer at wavelength 545 nm for nitrate and 885 nm, whereas for phytoplankton abundance use APHA equation. Spatial distribution of nitrate, phosphate and phytoplankton abundance using kriging-method equation and Software Ermaper 7.0. Nitrate concentrations were found to be between 0.2 mg - 0.7 mg / l, phosphates ranging from 0.2 to 0.6 mg / l and the abundance of phytoplankton ranged from 49,682 to 139,490 ind / l. The correlation coefficient analysis indicates the relationship between nitrite and phytoplankton of 0.3947, phosphate and phytoplankton of. 0.0068. The concentration of nitrate and phosphate at the observation site indicated that the water quality belongs to the oligotrophic waters, the abundance of phytoplankton is high and there is no blooming in certain species, and the relationship between the nitrate and phosphate concentration is positively correlated with the abundance of phytoplankton at the observation site.
KEMAMPUAN ZOO-TEKNIK LARVA IKAN GABUS (Oxyeleotris heterodon Weber, 1908) DALAM UPAYA DOMESTIKASI IKAN ENDEMIK DANAU SENTANI Kalor, John Dominggus; Utami, Galuh P.W.; Sulistyo, Isdy; Suryaningsih, Suhestri
JFMR (Journal of Fisheries and Marine Research) Vol. 2 No. 1 (2018): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2018.002.01.5

Abstract

Penelitian ini dilakukan untuk mengetahui kemampuan zooteknik larva ikan gabus Sentani, dengan mengamati volume dan penyusutan kuning telur (yolk), perkembangan bukaan mulut, laju pertumbuhan spesifik, dan tingkat mortalitas larva, serta pakan yang cocok untuk ikan gabus Sentani pada stadia larva. Menggunakan metode eksperimen dengan Rancangan Acak Lengkap (RAL). Perlakuan yang digunakan adalah pemberian pakan berupa (P1) kuning telur, (P2) tepung spirulina, (P3) biofloc, (P4) infusoria, (P5) Naupli Artemia, dan (P6) pakan buatan (pellet). Hasil penelitian menunjukan bahwa 0 jam setelah menetas larva ikan Gabus Sentani memiliki volume kuning telur (yolk) sebesar 0,0444 mm³ . Penyusutan volume kuning telur (yolk) 24 jam setelah menetas menjadi 0,0133 mm³, dan 48 jam setelah  menetas menjadi 0,0043 mm³. Awal perkembangan bukaan mulut larva terjadi 24 jam setelah menetas dengan MH 45° dan MH 90° mencapai 0,13 mm dan 0,24 mm. Laju pertumbuhan spesifik menunjukan hasil terbaik pada perlakuan pakan menggunakan tepung spirulina yaitu laju pertumbuhan spesifik pada hari ke 6 mencapai 0,006 mm dan laju pertumbuhan spesifik pada hari ke 10 mencapai 0,019 mm, sedangkan pada perlakuan menggunakan kuning telur laju pertumbuhan spesifik pada hari ke 6 hanya mencapai 0,002 mm dan pada hari ke 12 mencapai 0,011 mm. Pemberian dengan 6 jenis pakan yang berbeda belum dapat menurunkan tingkat mortalitas larva ikan Gabus Sentani karena seluruh larva mati pada hari ke 13, namun larva yang diberi pakan tepung spirulina dapat hidup hingga hari ke 10 dan larva yang diberi  kuning telur dapat bertahan  hidup hingga hari ke 12. Jenis pakan tepung spirulina dan kuning telur memiliki kriteria yang paling sesuai sebagai pakan pada stadia larva.
Co-Authors Basa T Rumahorbo Ervina Indrayani Isdy Sulistyo Izaac, Fransina A Jaban, Robert D Kalvin Paiki Lalu Panji Imam Agamawan Mantayborbir, Vyona Numberi, Yulindra Margaretha Runtuboi, Dirk Y. P. Suryaningsih, Suhestri Utami, Galuh P.W. Wenda, Yukiur