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Analysis of fishing season for tuna (Thunnus spp.), little tuna (Euthynnus sp.) and skipjack (Katsuwonus pelamis) in FMA 716 Tuyu, Adel M.; Luasunaung, Alfret; Sumilat, Deiske A.; Manoppo, Lefran; Kaparang, Frangky E.; Mantiri, Rose O. S. E.; Warouw, Veibe
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.v11i1.44633

Economically important pelagic fish species in FMA 716 include skipjack (Katsuwonus pelamis), tuna (Thunnus spp.) and frigate tuna (Euthynnus sp.), these pelagic fish species are caught intensively. This study aims to provide information on the appropriate season for catching tuna, skipjack and tuna in FMA 716. The results of the study show the pattern of the tuna, skipjack and frigate tuna (TCT) fishing season based on the catches landed in PPS Bitung and PPP Tumumpa with fishing areas in FMA 716, i.e. the results vary every year but the peak of the fishing season occurs in the eastern transitional season. West - September, October and November. Peak fishing season for skipjack and tuna occurs three times and frigate tuna 2 times in 5 years. Keywords: catching season, Katsuwonus pelamis, Thunnus spp and Euthynnus sp,FMA 716 Abstrak: Jenis ikan pelagis ekonomis penting di WPP 716 antara lain adalah cakalang (Katsuwonus pelamis), tuna (Thunnus spp.) dan tongkol (Euthynnus sp.), jenis – jenis ikan pelagis tersebut ditangkap secara intensif. Penelitian ini bertujuan memberikan informasi musim yang tepat untuk melakukan penangkapan ikan tuna, cakalang dan tongkol di WPP 716. Hasil penelitian menujukan pola musim penangkapan ikan Tuna, Cakalang dan Tongkol (TCT) berdasarkan hasil tangkapan yang didaratkan di PPS Bitung dan PPP Tumumpa dengan wilayah penangkapan di WPP 716 yaitu hasilnya bervariasi setiap tahunnya tetapi yang terbanyak puncak musim penagkapan ikan terjadi pada musim masa peralihan timur-barat yaitu bulan September, Oktober dan November. Puncak musim penangkapan ikan cakalang dan tuna terjadi sebanyak tiga kali dan ikan tongkol 2 kali dalam 5 tahun. Kata kunci : Musim penangkapan ikan tuna, tongkol dan cakalang, WPP 716

Seagrass Community Structure at Ratatotok Beach, Southeast Minahasa Regency Purba, Dhebby; Wagey, Billy; Luasunaung, Alfret; Manembu, Indri; Sumilat, Deiske; Mantiri, Rose
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.47824

The purpose of this research is to know about the type of seagrass, the community structure of seagrass based on the density of type, the density of the relatively, type of frequency, frequency relatively, type of cover, cover relatively, diversity index, dominance and parameter index in surrounding water environment of seagrass at Ratatotok beach. The result of this research is identifying 4 species, namely; Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium dan Halodule pinifolia. The value of density is 39 indv/m2, the value type of frequency is 7.9, the value type of cover is 39.15, importance value index had 159.04%. Thalassia hemprichii, diversity index is “medium” with an average value (H’) of 2.63 and a higher importance index with an average value of C of 0.82. Surrounding waters at Ratototok Beach got a “medium” value of seagrass cover value is 39%. Environmental parameters in surrounding waters at Ratatotok beach had a value within; Temperature 31.95 0C, salinity 29.79o/oo, pH 7.62, DO 5.60 mg/L and the type of substrate found is sandy, sandy mud and coral fragments. Keywords: Seagrass, Community structure, Ratatotok beach. Abstrak Tujuan dilakukan penelitian ini yaitu mengetahui jenis lamun, struktur komuntas lamun berdasarkan kepadatan jenis, kepadatan relatif, frekuensi jenis, frekuensi relatif, penutupan jenis, penutupan relatif, indeks keanekaragaman, indeks dominansi dan parameter lingkungan perairan padang lamun yang berada di sekitar Pantai Ratatotok. Hasil yang di peroleh dari penelitian ini teridentifikasi 4 spesies, yaitu: Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium dan Halodule pinifolia. Dengan nilai kepadatan 39 ind/m2, frekuensi jenis 7,9, penutupan jenis 39,15, Indeks nilai penting (INP) diperoleh nilai 159,04 %, pada Thalassia hemprichii, Indeks keanekaragaman “sedang” dengan nilai rata-rata (H’) 2,63 dan indeks dominansi tinggi dengan nilai rata-rata C 0,82. Berdasarkan kategori penutupan lamun yang terdapat di sekitar Perairan Ratatotok dikategorikan “sedang” dengan nilai penutupan 39%. Parameter lingkungan antara lain: suhu 31,95 0C, salinitas 29,79 o/oo, pH 7,62, DO 5,60 mg/l dan jenis substrat yang di temukan adalah berpasir, pasir berlumpur dan pecahan karang. Kata kunci : Lamun, Struktur Komunitas, Pantai Ratatotok

Study of Planned Maintenance System Senior Admiral John Lie’s Training Ship on Shipping Safety Ansar, Azhar Ariansyah; Luasunaung, Alfret; Sumilat, Deiske Adeliene; Pamikiran, Revols Dolfi Ch; Kaparang , Frangky Erens; Onibala, Hens
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.48973

The implementation of the ship maintenance management system on Rear Admiral Jhon Lie's training ship did not run optimally, which impacted the less-than-optimal condition of various training ship equipment because the crew did not carry out the ship maintenance system according to the procedure, resulting in the incident that the ship's anchor winch operation did not function optimally when the ship was anchored in Belang Port, Southeast Minahasa. This study aims to identify and analyze the positive and significant effect of the planned maintenance system on shipping safety. The primary data collection methods used in this study were questionnaires and interviews. In this study, data processing and presentation were in the form of diagrams and path analysis with structural equation modeling (SEM-PLS) using SmartPLS. From the results of the data analysis, the R-square value of shipping safety (Y) is 0.307, which means that the planned maintenance system (X1) and ship maintenance (X2) can affect shipping safety (Y) by 30.7%. Ship maintenance (X2) has a significant effect on sailing safety (Y), with P-values = 0.033 0.05 (hypothesis accepted). The planned maintenance system (X1) has a significant effect on sailing safety (Y), with a P-value of 0.037 0.05 (hypothesis accepted). As a result of the analysis, it was found that the planned maintenance system has a significant effect on shipping safety.

ANALYSIS OF LIVING STAGES OF TRADITIONAL FISHERMEN IN BELANG DISTRICT SOUTHEAST MINAHASA Laside, Iftitah Khairunnisa; Suhaeni, Siti; Luasunaung, Alfret
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

The purposive of this study, namely to find out how much and what are the sources of income for traditional fishermen's families in Belang District, and the expenses of traditional fishermen's families in Belang District. The Method used in this research is a survey method. The populations in this study are traditional fishermen in Belang District. The sampling method is using a quataed Multi-Stages Purposive Sampling, with the number of sample villages being 15 villages and the sample fishermen taken are fishermen with fishing rods and nets as much as 10% of the total population in each sample village. The data analysis used is descriptive qualitative and quantitative analysis. The standard of living of traditional fishing families is analyzed using the Engel index. Based on the results of the analysis, it is known that the income of traditional fishermen's families in Belang District comes from their main job as fishermen, side jobs outside the field of fisheries. The total incomes of traditional fishermen's families in Belang District on average for one year is Rp.53.394.000. There are two types of expenditures for traditional fishermen's families in Belang District, namely expenditures for food and expenditures for non-food such as clothing, housing, health, education, electricity, transportation and others. The total average expenditure for one year is Rp. 53.394.000, which is divided into expenditures for food needs of Rp. 32.284.500 and expenditures for non-food needs, which are Rp. 21.109.500. The results of the analysis of the Engel index are 60.46%, used to meet food needs only. The proportion for food, which is 39.54%. This is indicates that the standard of living of traditional fishermen in Belang District is still relatively low because more than half of their income is only sufficient to meet food needs.

Study of e-DNA Quality at Fishing Ground of Manado Bay, North Sulawesi Province. Zebua, Nistiarni; Mandagi, Ixchel F.; Masengi, K.W.A; Luasunaung, Alfret; Rumengan, Inneke F. M.; Wulur, Stenly; Makapedua, Daisy M.; Masengi, E. I. K.G.; Sumilat, Deiske A.; Masengi, Akira W. R.; Manoppo, Victoria
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.v13i1.57404

We used the Nansen Bottle Sampler to collect water samples in the deepsea area, ranging from 150 meters to 175 meters in six water points around Manado Bay, to test the quality of e-DNA water samples to detect target species in the fishing area. Therefore, the basis of the case study method with a sampling technique was carried out on July 29 2023 using Power Water Sterivex Kits, water samples were then stored at -250C and were then taken to TBRC, University of the Ryukyus for further laboratory works, such as; eDNA extract, eDNA quality testing, 1st and 2nd PCR and Electrophoresis eDNA analysis processes using MiFish-U primers with a target of 163–185bp and 375 bp, following the MiFish protocol. Based on the results of the eDNA extract solution, it is known that the quality of eDNA from the 6 sampling sites locations ranged between 2.8 µg/mL – 4.4 µ g/mL, which means a good quality of eDNA. Moreover, it showed that the presence of DNA fragments at Kappa 60◦C Gelelectrophoresis 1st-PCR, 12S rRNA gene product (163–185bp), and Kappa 60◦C and 65◦C Geklelectrophoresis 2nd-PCR Products according to the target amplicon 375 bp. This means we can conduct the next step, the PCR sequence analysis. Then, eDNA quality testing, 1st and 2nd PCR, and Electrophoresis of e-DNA analysis process were using MiFish-U F/R primers with a target of 375 bp, it is known that the concentration of Nanodrop from the 6 sampling locations ranges between 2.8 µg/mL – 4.4 µg/mL while the core or quality eDNA ranged from 1.56 µg/mL – 2.50 µg/mL. Based on identification results, five types of species were detected; Myctophum lychnobium, Selar crumenophthalmus, Photonectes sp., Oreochromis sp. Thunnus obesus and Homo sapiens were generated using eDNA metabarcoding on the mitochondria genome database MitoFish. Keywords: e-DNA, eDNA quality, species target, fishing area, Manado Bay Abstrak Kami menggunakan Nansen Bottle Sampler untuk mengambil sampel air pada laut dalam berkisar 150meter sampai 175 meter di enam titik perairan Sekitar Teluk Manado, untuk menguji Kualitas e-DNA sample air yang digunakan untuk mendeteksi target spesies pada daerah penangkapan. Selanjutnya dasar metode studi kasus dengan teknik pengambilan sampel secara sampling dilakukan pada tanggal 29 Juli 2023 menggunakan Power Water Sterivex Kits, sapel air disimpan pada -250C yang selanjutnya dibawa ke TBRC, University of the Ryukyus untuk pnelitian laboratorium lanjutan seperti ekstrak eDNA, Pengujian kualitas eDNA, 1st and 2nd PCR dan Elektrophoresis proses analisis eDNA menggunakan primer MiFish-U dengan target 375 bp, mengikuti MiFish protokol. Berdasarkan hasil pengujian larutan ekstrak eDNA diketahui bahwa kualitas eDNA dari 6 titik lokasi sampling berkisar antara 2.8 ng/mL – 4.4 ng/mL dan menunjukkan adanya fragment DNA pada Kappa 60◦C Geklelectrophoresis 1st-PCR Produk 12S rRNA gene (163–185bp, dan Kappa 60◦C dan 65◦C Geklelectrophoresis 2nd-PCR Produk sesuai amplikon target 375 bp. Hal ini berarti dapat dilanjutkan pada tahap analisis sekuens PCR. Pengujian kualitas eDNA, 1st and 2nd PCR dan Elektrophoresis proses analisis eDNA menggunakan primer MiFish-U F/R dengan target 375 bp, diketahui bahwa konsentrasi Nanodrop dari 6 titik lokasi sampling berkisar antara 2.8 µg/mL – 4.4 µg/mL sedangkan kemurnian atau kualitas eDNA berkisar antara 1.56 µg/mL – 2.50 µg/mL. Hasil identifikasi menyatakan lima jenis spesies terdeteksi; Myctophum lychnobium, Selar crumenophthalmus, Photonectes sp., Oreochromis sp. Thunnus obesus, Homo sapiens dihasilkan dengan menggunakan eDNA metabarcoding pada MitoFish database genom mitokondria. Kata kunci : e- DNA, kualitas eDNA, target spesies, daerah penangkapan, Teluk Manado.

ANALYSIS OF LIVING STAGES OF TRADITIONAL FISHERMEN IN BELANG DISTRICT SOUTHEAST MINAHASA Laside, Iftitah Khairunnisa; Suhaeni, Siti; Luasunaung, Alfret
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

The purposive of this study, namely to find out how much and what are the sources of income for traditional fishermen's families in Belang District, and the expenses of traditional fishermen's families in Belang District. The Method used in this research is a survey method. The populations in this study are traditional fishermen in Belang District. The sampling method is using a quataed Multi-Stages Purposive Sampling, with the number of sample villages being 15 villages and the sample fishermen taken are fishermen with fishing rods and nets as much as 10% of the total population in each sample village. The data analysis used is descriptive qualitative and quantitative analysis. The standard of living of traditional fishing families is analyzed using the Engel index. Based on the results of the analysis, it is known that the income of traditional fishermen's families in Belang District comes from their main job as fishermen, side jobs outside the field of fisheries. The total incomes of traditional fishermen's families in Belang District on average for one year is Rp.53.394.000. There are two types of expenditures for traditional fishermen's families in Belang District, namely expenditures for food and expenditures for non-food such as clothing, housing, health, education, electricity, transportation and others. The total average expenditure for one year is Rp. 53.394.000, which is divided into expenditures for food needs of Rp. 32.284.500 and expenditures for non-food needs, which are Rp. 21.109.500. The results of the analysis of the Engel index are 60.46%, used to meet food needs only. The proportion for food, which is 39.54%. This is indicates that the standard of living of traditional fishermen in Belang District is still relatively low because more than half of their income is only sufficient to meet food needs.

Monitoring System for Sea Surface Temperature and Wind Speed in FADs Based on the Internet of Things Hidayat, Andre Alfian; Angmalisang, Ping Astony; Bara, Robert Antonius; Sumilat, Deiske Adeliene; Luasunaung, Alfret; Warouw, Veibe
BRILIANT: Jurnal Riset dan Konseptual Vol 8 No 3 (2023): Volume 8 Nomor 3, Agustus 2023
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v8i3.1298

Sea Surface Temperature (SST) is the temperature of the water measured at sea level. SST is a crucial marine parameter that influences the weather and climate in Indonesia. The value of sea surface temperature will be very closely related to factors such as the depth of measurement from sea level, the intensity of sunlight received, season, weather, water depth, air circulation, and cloud cover. This study aims to design a prototype tool to measure wind speed and sea surface temperature parameters. The components used are the DS18B20 sensor, JL-FS2 sensor, Arduino Mega 2560, and the SIM900a GSM Module. The system is displayed in real-time via the Thingspeak website, accessed via a PC or smartphone. The DS18B20 sensor, as a sea surface temperature sensor, can measure these parameters by looking at the trend of changing day and night temperatures. The JL-FS2, as a wind speed sensor, has been able to measure wind speed parameters during field tests at FADs.

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