Article Per Year (5 Year)
p-Index From 2021 - 2026
2.024
P-Index
This Author published in this journals
All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut AQUATIC SCIENCE & MANAGEMENT e-Journal BUDIDAYA PERAIRAN JURNAL ILMIAH PLATAX
Manu, Lusia
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search
Journal : JURNAL ILMIAH PLATAX

 1 
Determination of Potential Pelagic Fishing Ground Based on Chlorophyll a Using Aqua Modis Satellite Sitorus, Hotma Stefany; Manu, Lusia; Kaparang, Frangky E; Dien, Heffry V
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v10i2.41888

Abstract

The purpose of this study was to determine the potential pelagic fishing ground using Aqua Modis satellite imagery in WPP 716. Catch data and coordinates of fishing ground from September to November 2021 were taken from the Tumumpa Fisheries Port, Manado. Chlorophyll-a data and Sea Surface Temperature data were downloaded from the website of http://oceancolorgsfc.nasa.gov. The results showed that the distribution of chlorophyll-a was concentrated at 02011'982" N and 1240 57'913" E with a total catch of 5,050 kg. The results indicated that the higher chlorophyll-a concentration and the increase of sea surface temperature in the fishing ground the more catch produced.Keywords: pelagic fish, Aqua Modis, WPP 716, chlorophyll-a, sea surfaceAbstractTujuan dari penelitian ini adalah untuk menentukan daerah penangkapan ikan pelagis yang potensial dengan menggunakan citra satelit Aqua modis di WPP 716.  Data hasil tangkapan dan koordinat daerah penangkapan ikan pada September sampai November 2021 diambil dari   pelabuhan Perikanan Pantai Tumumpa, Manado. Data klorofil-a dan data Suhu Permukaan Laut diunduh dari situs http://oceancolorgsfc.nasa.gov. Hasil penelitian menunjukan sebaran klorofil-a terkosentrasi di 02011’982” LS dan 1240 57’913” BT dengan jumlah hasil tangkapan sebanyak 5.050 kg. Hasil analisis menunjukan semakin tinggi konsentrasi klorofil-a dan suhu permukaan laut pada daerah penangkapan ikan maka semakin meningkat jumlah hasil tangkapan yang dihasilkan.Kata kunci: pelagis, Aqua Modis, WPP 716, klorofil-a, suhu permukaan laut
Fishing Season Estimation of Mackerel Scad (Decapterus spp) with purse seines in the Sulawes Sea based on catch data Ginting, Jebry Yanta; Pamikiran, Revols D. Ch.; Masengi, Kawilarag W. A; Luasunaung, Alfret; Dien, Heffry V.; Manu, Lusia
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v10i2.41897

Abstract

This study aims to determine the pattern or fluctuations in the fishing season of mackerel scad (Decapterus spp) and suspected months of the fishing season. Data analysis is made in the form of cross-tabulation and mapped into graphs. Fishing season is determined by the average percentage methods based on time series analysis. The results indicated that the fishing season of mackerel scad in the Sulawesi Sea fluctuates. The fishing season occurs from May to November with the highest season/seasonal index occurring in July, while non-seasonal conditions occur from December to April with the smallest seasonal index/non-seasonal peak occurring in January.Keywords:  mackerel scads, fishing season, fluctuation, Sulawesi SeaAbstrakPenelitian ini bertujuan untuk mengetahui mengetahui pola atau bentuk fluktuasi musim  penangkapan  dan pada bulan apa saja diduga menjadi kondisi musim penangkapan ikan layang (Decapterus spp). Penyajian dan analisis data dibuat dalam bentuk tabulasi silang dan dipetakan dalam bentuk grafik. Untuk analisis musim penangkapan ikan menggunakan Metode Presentasi Rata-rata (The Average Percentage Methodes) yang didasarkan pada Analisis Runtun Waktu (Time Series Analysis). Hasil analisis menunjukan bahwa musim penangkapan ikan layang (Decapterus spp) di Laut Sulawesi berfluktuasi. Musim penangkapan terjadi pada Mei sampai November dengan puncak musim/indeks musim tertinggi terjadi pada Juli sedangkan kondisi bukan musim terjadi pada Desember sampai April dengan indeks musim terkecil/puncak bukan musim terjadi pada Januari. Kata-kata Kunci: ikan layang, musim penangkapan, fluktuasi, laut Sulawesi.
The Effect of Bait Type on Total Catch of Skipjack Tuna (Katsuwonus Pelamis) by Using Hand Line Larengka, Falenscya; Manoppo, Lefrand; Manu, Lusia; Sitanggang, Effendi P.; Luasunaung, Alfred; Kayadoe, Mariana E.
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v10i2.41949

Abstract

A hand line is one type of fishing gear that is often used by traditional fishermen to catch fish. Hand lines are categorized as active fishing gear and are also environmentally friendly. The operation of the equipment is relatively simple, it does not use a lot of auxiliary equipment such as fishing trawls and ring trawls.  This research was conducted in March and April 2022 in the Alo village, District Rainis, Talaud Islands Regency. The purpose of this study was to determine the best type of bait for catching skipjack tuna (Katsuwonus pelamis) with hand lines and to identify other types of fish caught. The method used in this research is a descriptive and participatory method, namely collecting data on catches in the fishing ground. Data analysis used a Randomized Block Design. The three types of bait used are artificial bait (silk), live fish bait, and chicken feathers. During this research, totally caught as many as 57, that is skipjack tuna (Katsuwonus pelamis) 31 (54.39%), mackerel tuna (Euthynnus affinis) 17  (29.82%), and mahi-mahi (Coryphaena hippurus) 9 (15.79). Based on the data analysis, the treatment of the type of hand line bait did not affect to catch.Keywords: skipjack; hand line; bait; catch. Abstrak        Pancing ulur merupakan salah satu jenis alat penangkapan ikan yang sering digunakan oleh nelayan tradisional untuk menangkap ikan di laut dan termasuk alat penangkapan ikan yang aktif dan juga ramah lingkungan. Penelitian ini dilakukan pada Maret dan April 2022 di desa  Alo, Kecamatan Rainis, Kabupaten Kepulauan Talaud. Tujuan penelitian adalah mengetahui jenis umpan yang terbaik untuk menangkap ikan cakalang (Katsuwonus pelamis) dengan pancing ulur dan mengetahui jenis ikan lainnya yang tertangkap.  Metode yang digunakan adalah metode deskriptif dan partisipatif, yaitu pengambilan data hasil tangkapan di daerah penangkapan (fishing ground). Analisis data menggunakan Rancangan Acak Kelompok.Tiga jenis umpan yang digunakan adalah umpan tiruan (kain sutera), umpan ikan hidup dan bulu ayam. Selama penelitian, total ikan yang tertangkap sebanyak 57 ekor ikan yang terdiri dari cakalang (Katsuwonus pelamis) sebanyak 31 ekor (54,39%), tongkol (Euthynnus affinis) sebanyak 17 ekor (29,82%) dan lemadang (Coryphaena hippurus) sebanyak 9 ekor (15,79%). Berdasarkan analisis data, perlakuan jenis umpan pancing ulur tidak berpengaruh terhadap hasil tangkapan.Kata kunci : cakalang, pancing ulur, umpan dan hasil tangkapan.
Effects of Shochu Distillery By-products on the Energy Budget of Common Carp Mokolensang, Jeffrie Fredrik; Manu, Lusia; Manu, Gaspar D.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45008

Abstract

The effects of Shochu distillery by-products (SDBP) were investigated by supplementary different level of SDBP to the basal diets for Japanese Common carp. To clarify the growth performances, energy budget equation was applied in this study. The feeding trial was conducted for 20 days by feeding the test diets containing SDBP at 0, 2,1 and 4.2%, respectively.　Based on the energy budget equation, the digestible energy (DE) requirements for the maximum growth ranged from 49.0 – 55.8 kcal/ind/d. The 4.2% SDBP diet yielded 6.5% higher growth energy but 7.1% lesser metabolic energy than the control. The energy budget on 4.2% SDBP diet accounted for 10.6% of feces (2.42 kcal/ind/d), 4.2% of non-fecal (0.93 kcal/ind/d), 39.4% of metabolic loss (9.03 kcal/ind/d) and 45.9% of growth (10.5 kcal/ind/d), respectively. Correspond to the control, non-fecal and metabolic energies were lower, in 4.2% SDBP resulting in the higher product energy. The above results indicate that SDBP can be utilized as a supplement ingredient for the growth promotion of carp feed, since it could provide a superior property for growth energy of fish by reduced energy of metabolic loss and non-fecal losses. Key words: Shochu distillery by-products; Energy requirements; Metabolic loss; Growth; Carp
Comparative Studies Of Residual Water Level In Manado And Melonguane Coastal Area During Tropical Cyclone In 2021 Azani, Audia Azizah; Djamaluddin, Rignolda; Bara, Robert A; Manu, Lusia; Dien, Heffry Veibert; Manembu, Indri Shelovita
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53167

Abstract

North Sulawesi Province, directly bordering the Pacific Ocean, is located in an area with the highest level of tropical cyclone (TC) activity in the world. As a result, the province is vulnerable to the impacts caused by cyclones, including storm surges. The increase in water levels due to this event has the potential to cause coastal flooding. Previous studies in Manado have identified that sea level rise can be detected through residual water level (RWL), making studying the characteristics of RWL in North Sulawesi important. This research focuses on Manado and Melonguane, allowing for a comparison of characteristics. The data used includes tropical cyclone data from the China Meteorological Administration (CMA) and tidal data from the Geospatial Information Agency. The Unified Tidal Analysis and Prediction (UTide) method is used to identify RWL. The analysis was carried out by using a t-test to compare data at the two locations. The results showed that RWL at those locations had significant differences with Melonguane having the higher value between them. Generally, the increase in RWL in Melonguane occurs shortly after the cyclone period, while the RWL in Manado maximum increases 86 hours after TC's first occurrence. Keywords: tropical cyclone; residual water level; UTide.
Variability Of Chlorophyll-A and Sea Surface Temperature in The Maluku Sea During El Nino Period 2023 Leksono, Anindito; Patty, Wilhelmina; Manu, Lusia; Rumengan, Inneke Fenny Melke; Budiman, Johny; Lumuindong, Frans
Jurnal Ilmiah Platax Vol. 13 No. 1 (2025): ISSUE JANUARY-JUNE 2025
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v13i1.57199

Abstract

Oceanographic factors such as Sea Surface Temperature (SST) and Chlorophyll-a (Chl-a) during El Nino can make fishing easier. The research aims to analyze the variability of SST and Chl-a in the Maluku Sea during El Nino 2023 and determine the influence of El Nino on upwelling in the Maluku Sea. The method used uses SST from Remote Sensing data which has been validated using observation and Chl-a data. Rainfall data is used to ascertain the climatic conditions of the North and South Maluku Sea regions. Validation of remote sensing SST data with observations has a correlation coefficient of 0.677. The research results show that in the West Monsoon of North Maluku, the SST was 29.1ºC and Chl-a 0.24 mg/m3 due to the influence of La Nina 2022 as shown by the rainfall in February of 199 mm. During the transition monsoon, the SST in the North Maluku Sea is 29.3 ºC higher than the South 29.8ºC. The East Monsoon SST in the Southern Maluku Sea experiences a decrease in temperature reaching 27.9 ºC and Chl-a of 075 mg/m3. Transition Monsoon II SST is 30ºC and Chl-a 0.21 mg/m3. The research concludes that the El Nino phenomenon that will occur in 2023 will affect upwelling in the Maluku Sea by 84%. There is a mismatch between the Chl-a peak in August SST and the SPL peak that occurred in September. When El Nino 2023 occurs, Chl-a is higher in the southern part of the Maluku Sea compared to the northern part, as is the SST. Keywords: SST, Chl-a, East monsoon, El Nino, Upwelling Abstrak Mengetahui faktor oseanografi seperti Suhu Permukaan Laut (SPL) dan Klorofil-a (Chl-a) saat El Nino dapat mempermudah penangkapan ikan. Tujuan penelitian untuk menganalisis variabilitas SPL dan Chl-a di Laut Maluku saat terjadi El Nino 2023 dan mengetahui pengaruh El Nino terhadap upwelling di Laut Maluku. Metode yang digunakan menggunakan data Penginderaan Jauh SPL yang telah di validasi menggunakan data obsevasi dan Chl-a. data curah hujan digunakan untuk memastikan kondisi iklim wilayah Laut Mauluku bagian Utara dan Selatan. Validasi data SPL penginderaan jauh dengan observasi memiliki korefisien korelasi sebesar 0.677. Hasil penelitian menunjukan bahwa pada Musim Barat Laut Maluku bagian Utara dengan SPL 29.1ºC dan Chl-a 0.24 mg/m3 dikarenakan pengaruh La Nina 2022 yang ditunjukkan dari curah hujan bulan Februari sebesar 199 mm. Saat Musim peralihan SPL di Laut Maluku bagian Utara 29.3 ºC lebih tinggi dari bagian Selatan 29.8ºC. Musim Timur SPL di Laut Maluku bagian Selatan mengalami penurunan suhu mencapai 27.9 ºC dan Chl-a sebesar 075 mg/m3. Musim Peralihan II SPl sebesar 30ºC dan Chl-a 0.21 mg/m3. Kesempulan penelitain adalah ini Fenomena El Nino yang terjadi pada tahun 2023 mempengaruhi upwelling di laut maluku sebasar 84%. Terjadi ketidak seuaian antara puncak Chl-a bulan Agustus SPL dengan puncak SPL yang terjadi bulan September. Saat terjadi El Nino 2023 Chl-a lebih tinggi di Laut Maluku bagian Selatan jika dibandingkan bagian Utara, begitu pula dengan SPL. Kata kunci: SPL, Chl-a, Musim Timur, El Nino, Upwelling
Spatial Analysis of Shallow Sea Benthic Habitats Based on Sentinel-2A Imagery in the Southern Waters of Manado Bay Putra Antou, Kevin; Rondonuwu, Ari B.; Rembet, Unstain N. W. J.; Modaso, Vivanda O. J.; Manu, Lusia; Kemer, Kurniati
Jurnal Ilmiah PLATAX Vol. 14 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v14i1.66137

Abstract

The southern coastal region of Manado Bay is experiencing intensive development pressure alongside increasing tourism activities and marine space utilization. These conditions have the potential to cause degradation of shallow-water benthic habitats, which play a vital ecological role. This study aims to map and analyze the spatio-temporal changes of shallow-water benthic habitats in southern Manado Bay using Sentinel-2A satellite imagery as the primary data source. Analysis was conducted using Sentinel-2A imagery from the 2017-2023 period through stages of image pre-processing, water column correction, and unsupervised classification using the K-means algorithm. Evaluation of the classification results was performed using an error matrix to obtain overall accuracy and Kappa coefficient values. The results indicate that the overall accuracy ranged from 72-78% with Kappa coefficients between 0.60-0.71. Spatio-temporal analysis indicates a significant decline in live coral cover from 41.09% to 28.17% during the 2017-2023 period, accompanied by an increase in dead coral area and sand substrates. These findings demonstrate that Sentinel-2A imagery can be effectively utilized for monitoring the dynamics of shallow-water benthic habitats at a regional scale and has the potential to support sustainable coastal zone planning and management. Keywords: Change Detection, Coastal Management, Sentinel-2A, Benthic Habitat. Abstrak. Wilayah pesisir selatan Teluk Manado mengalami tekanan pembangunan yang intensif seiring dengan meningkatnya aktivitas pariwisata dan pemanfaatan ruang laut. Kondisi ini berpotensi menyebabkan degradasi habitat bentik perairan dangkal, yang memainkan peran ekologis vital. Studi ini bertujuan untuk memetakan dan menganalisis perubahan spasial-temporal habitat bentik perairan dangkal di selatan Teluk Manado menggunakan citra satelit Sentinel-2A sebagai sumber data utama. Analisis dilakukan menggunakan citra Sentinel-2A dari periode 2017-2023 melalui tahapan pra-pemrosesan citra, koreksi kolom air, dan klasifikasi tanpa pengawasan menggunakan algoritma K-means. Evaluasi hasil klasifikasi dilakukan menggunakan matriks kesalahan untuk mendapatkan akurasi keseluruhan dan nilai koefisien Kappa. Hasil menunjukkan bahwa akurasi keseluruhan berkisar antara 72-78% dengan koefisien Kappa antara 0,60-0,71. Analisis spasial-temporal menunjukkan penurunan signifikan pada tutupan karang hidup dari 41,09% menjadi 28,17% selama periode 2017-2023, disertai dengan peningkatan luas karang mati dan substrat pasir. Temuan ini menunjukkan bahwa citra Sentinel-2A dapat dimanfaatkan secara efektif untuk memantau dinamika habitat bentik perairan dangkal pada skala regional dan berpotensi mendukung perencanaan dan pengelolaan zona pesisir yang berkelanjutan. Kata kunci: Deteksi Perubahan, Pengelolaan Pesisir, Sentinel-2A, Habitat Bentik
Co-Authors Adnan Wantasen Alfret Luasunaung Ali, Isti Utami Indah Sari Angmalisang, Ping Astony Anindito Leksono Ari B. Rondonuwu Azani, Audia Azizah Cyska Lumenta Dien, Heffry Veibert Effendi P. Sitanggang Gaspar D. Manu, Gaspar D. Ginting, Jebry Yanta Hariawan, Mutiara G. V. Husain, Herianto Indra R. N. Salindeho Indri Manembu Inneke F. M Rumengan Janny F. Polii Johnny Budiman Johny Budiman Juliaan Ch. Watung Kaparang, Frangky E Kurniati Kemer Kusumawardani, Niken Larengka, Falenscya Lefrand Manoppo Lumuindong, Frans Manahonas, Febrik Stopers Manoppo, Lefrrand Mariana E. Kayadoe Masengi, Kawilarag W. A Masengi, Kawilarang W. A. Modaso, Vivanda O. J. Mokolensang, Jeffrie F. Mokolensang, Jeffrie Fredrik Pamikiran, Revols D. Ch. Pangauan, Ditsen Pelle, Wilmy Etwil Prasetyo, Fransisco W. Putra Antou, Kevin Rignolda Djamaluddin Robert A. Bara Sitorus, Hotma Stefany Taib, Ismanto A.R. Talakana, Sugianto Thamin, Arman Unstain N. W. J. Rembet, Unstain N. W. J. Wilhelmina Patty Wungkana, Vike V. Yusuf, Yustin