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INDONESIA
JURNAL ILMIAH PLATAX
Published by Universitas Sam Ratulangi
ISSN : 23023589     EISSN : -     DOI : -
Core Subject : Social,
Environmental Science
Mencakup Penulisan yang berhubungan dengan pelaksanaan penelitian yang dilakukan secara mandiri, atau kelompok, dan berdasarkan Ruang Lingkup Pengelolaan Wilayah Pesisir, Konservasi, Ekowisata, dan Keanekaragaman Hayati Perairan.
Arjuna Subject : -
Articles 488 Documents
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Antibacterial Activity and Zoochemical Analysis of Sea Urchin Diadema setosum (Leske, 1778) Extract From Aertembaga Waters, Bitung City Rompas, Gebriela; Lintang, Rosita A. J.; Sumilat, Deiske A. A.; Rumengan, Inneke F. M.; Ginting, Elvy L.; Pangkey, Henneke D.
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.v10i2.42322

Abstract

Sea urchin is one of the marine biotas that produce bioactive compounds and has biological activity, one of which is antibacterial. This study aims to determine the antibacterial activity of the crude extract of D. setosum gonad and its fractionation against test bacteria Staphylococcus aureus and Escherichia coli and to conduct a zoochemical analysis to determine the content of bioactive compounds. The antibacterial test used the disc diffusion method while the chemical analysis was carried out qualitatively. The results showed that the methanol, ethyl acetate, and n-hexane fraction had antibacterial activity against the two test bacteria. The ethyl acetate fraction was the fraction that showed the highest antibacterial activity, its inhibition zone was 8 mm against S. aureus and 7,5 mm against E. coli. The zoochemical analyses of the ethyl acetate fraction from gonads extract showed positive results for alkaloid compound, phenolic, and saponinKeywords: Sea urchin Gonad, Antibacterial, Disc diffusion, Zoochemistry, ExtractionAbstrakBulu babi merupakan salah satu biota laut yang memproduksi senyawa bioaktif dan memiliki aktivitas biologis salah satunya adalah antibakteri. Tujuan penelitian ini mengetahui aktivitas antibakteri dari ekstrak kasar gonad bulu babi D. setosum dan hasil fraksinasi terhadap bakteri Staphylococcus aureus dan Escherichia coli serta melakukan analisis zookimia untuk mengetahui kandungan senyawa bioaktif. Pengujian antibakteri menggunakan metode difusi cakram sedangkan analisis kimia dilakukan secara kualitatif. Hasil penelitian menunjukkan baik fraksi metanol, fraksi etil asetat, dan fraksi n-heksana memiliki aktivitas antibakteri terhadap kedua bakteri uji. Fraksi etil asetat merupakan fraksi yang memperoleh aktivitas antibakteri tebaik dengan diameter zona hambat 8 mm terhadap bakteri S.aureus dan 7,5 mm terhadap bakteri E. coli. Hasil uji zookimia fraksi etil asetat menunjukkan bahwa ekstrak gonad D. setosum mengandung senyawa dari golongan alkaloid, fenolik, dan saponin.Kata kunci : Gonad Bulu Babi (D. setosum ), Antibakteri, difusi cakram, Zookimia, Ekstraksi
Phycoeritryn Pigments In Carrageenan From Algae Kappaphycus alvarezii (Doty) Doty 1996 Tumalun, Abigael Joanete; Mantiri, Desy Maria Helena; Paransa, Darus Sa'adah Johanis; Rompas, Rizald Max; Kemer, Kurniati; Mudeng, Joppy
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.v10i2.42456

Abstract

Kappaphycus alvarezii is a marine alga cultivated in Indonesia and produces carrageenan. Carrageenan is a product used in the cosmetic, food, and pharmaceutical industries. This study aimed to test the viscosity and gel strength of refined carrageenan with the addition of natural dye phycoerythrin from the algae Halymenia durvillei with different concentrations. Refine carrageenan was made using alkaline solvents of 4% NaOH and 5% KOH and then boiled using a pressure cooker. The results showed a reddish color change in the pure carrageenan refinement with the addition of phycoerythrin pigment, especially at a concentration of 50%. The average value of refined carrageenan viscosity for 4% NaOH concentration was 49.22 – 50.27 cP, and 5% KOH concentration ranged from 47.16 – 50.12 cP. Testing the gel strength of the refined carrageenan, the average NaOH 4% was 72.67 – 82.00 mm/g/sec, and the 5% KOH concentration was 81.00 – 81.78 mm/g/sec. The addition of phycoerythrin pigment to refine carrageenan had no effect on viscosity and gel strength. Drying at a temperature of 100oC obtained a water content of semi-refined carrageenan between 2.91 - 4.38%, this value is in accordance with the standard for carrageenan water content from FAO, which is a maximum of 12%.Keywords: Carrageenan, phycoerythrin pigments, Kappaphycus alvarezii, Halymenia durvillei, viscosity, gel strength.AbstrakKappaphycus alvarezii merupakan alga laut yang dibudidayakan di Indonesia dan penghasil karagenan. Karagenan merupakan suatu produk yang digunakan dalam industri kosmetik, makanan, dan juga farmasi. Tujuan dari penelitian adalah menguji viskositas dan kekuatan gel terhadap karagenan refine yang ditambahkan pigmen fikoeritrin dari alga Halymenia durvillei dengan perbedaan konsentrasi. Karagenan refine dibuat dengan menggunakan pelarut alkali NaOH 4% dan KOH 5% selanjutnya direbus dengan tekanan tinggi. Hasil yang didapat menunjukan bahwa terjadi perubahan warna kemerahan pada karagenan refine dengan penambahan pigmen fikoeritrin, terutama pada konsentrasi 50%. Nilai rata-rata viskositas karagenan refine untuk konsentrasi NaOH 4% adalah 49.22 – 50.27 cP, dan konsentrasi KOH 5% berkisar 47.16 – 50.12 cP. Pengujian kekuatan gel pada karagenan refine diperoleh rata-rata NaOH 4% sebesar 72.67 – 82.00 mm/g/det dan konsentrasi KOH 5% adalah 81.00 – 81.78 mm/g/det. Penambahan pigmen pada karagenan refine tidak berpengaruh pada viskositas dan kekuatan gel. Pengeringan dengan suhu 100OC memperoleh kadar air pada karagenan semi refine antara 2.91 - 4.38%, nilai tersebut telah sesuai dengan standar kadar air karagenan dari FAO yaitu maksimum 12%.Kata kunci: Karagenan, pigmen fikoeritrin, Kappaphycus alvarezii, Halymenia durvillei, viskositas, kekuatan gel. 
Effect Of Lead Acetate (Pb(Ch3coo)2 On The Growth Of Marine Microalgaes Chlorella vulgaris (Beijerink, 1890) Jeheskiel, Aprilisa Viony; Kemer, Kurniati; Mantiri, Desy Maria Helena; Paulus, James; Rompas, Rizald M.; Khreekhoff, Renny
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.v10i2.42458

Abstract

Microalgae are single-celled microorganisms, forming colonies and are very commonly found in large waters such as seas, lakes, rivers, and swamps. The purpose of this study was to determine the growth and density of microalgae Chlorella vulgaris in a controlled container with the administration of lead acetate at different concentrations. Cell growth of Chlorella vulgaris with samples of marine microalgae Chlorella vulgaris from culture containers. At the beginning of the exponential phase, the microalgae were given lead acetate in 3 containers with concentrations of 30 ppm, 50 ppm, 80 ppm, and control/without treatment. The results showed that the growth of Chlorella vulgaris cells with lead acetate administration experienced unstable growth compared to those without lead acetate administration (control).Keywords: Microalgae; Chlorella vulgaris; Culture; Lead AcetateAbstrakMikroalga merupakan mikroorganisme bersel satu, membentuk koloni dan sangat banyak dijumpai di perairan besar seperti pada laut, danau, sungai serta perairan payau. Tujuan dari penelitian ini adalah untuk mengetahui pertumbuhan dan kepadatan mikroalga  Chlorella vulgaris dalam wadah terkontrol dengan pemberian timbal asetat pada konsentrasi yang berbeda. Pertumbuhan sel Chlorella vulgaris denga Sampel mikroalga laut Chlorella vulgaris berasal dari wadah kultur. Pada awal fase eksponensial, mikroalga diberikan timbal asetat ke dalam 3 wadah dengan konsentrasi 30 ppm, 50 ppm, 80 ppm serta kontrol/tanpa perlakuan. Hasil penelitian menunjukkan bahwa pertumbuhan sel Chlorella vulgaris dengan pemberian timbal asetat mengalami pertumbuhan yang tidak stabil dibandingkan tanpa pemberian timbal asetat (kontrol).Kata kunci: Mikroalga;  Chlorella vulgaris;  Kultur; Timbal Asetat
Identification of Coraline Algae In Meras Waters Bunaken District Pondaag, Kristy Sofia; Gerung, Grevo Soleman; Sinjal, Chatrien Annita; Sondak, Calvyn F. A.; Tilaar, Sandra O.; Kreckhoff, Reny L.
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.v10i2.42462

Abstract

Marine algae are part of marine organisms, especially plants, and are included in lower plants that do not have different skeletal structures such as roots, stems, and leaves. Although it looks different, algae is actually just a form of the thallus. Coralline algae belong to the Rhodophyta Division, Class Florideophycidae, Order Corallinales. Coralline algae are divided into two parts based on their shape (morphology), namely non-geniculate and geniculate. This study aims to identify the types of coralline algae that are crustose (non-geniculate) and branched (geniculate) found in Meras, Bunaken District and can explain the morphology of coralline algae in diffuse non-geniculate and geniculate forms. This research was conducted in Meras, Bunaken District by means of SCUBA diving at a depth of 3 – 7 meters, and samples were taken using the cruising survey method. After that, the samples were brought ashore for the next identification process. The results of the research that has been conducted on samples of coralline algae obtained in Meras, Bunaken District are that there are 2 types of non-geniculate, namely Peyssonnelia caulifera and Peyssonnelia Orientalis, and 1 species of geniculate, namely Tricleocarpa fragilis identified.Keywords: Identification, Coralline Algae, MerasAbstrakAlga laut adalah bagian dari organisme laut khususnya tumbuhan dan termasuk dalam tumbuhan tingkat rendah yang tidak mempunyai perbedaan susunan kerangka seperti akar, batang dan daun. Walaupun terlihat memiliki perbedaan, sebenarnya alga hanya merupakan bentuk talus belaka. Alga koralin tergolong kedalam Divisi Rhodophyta, Kelas Florideophycidae, Ordo Corallinales. Alga koralin terbagi menjadi dua bagian berdasarkan bentuknya (morfologi), yaitu non geniculate (tidak bercabang) dan geniculate (bercabang). Penelitian ini bertujuan untuk dapat mengidentifikasi jenis alga koralin bentuk tidak bercabang (non geniculate) dan bentuk bercabang (geniculate) yang terdapat di Perairan Meras, Kecamatan Bunaken serta dapat menjelaskan morfologi alga koralin bentuk tidak bercabang (non geniculate) dan bentuk bercabang (geniculate). Penelitian ini dilakukan di Perairan Meras Kecamatan Bunaken dengan cara SCUBA diving pada kedalaman 3 – 7 meter dan sampel diambil menggunakan metode survey jelajah. Setelah itu sampel dibawa ke darat untuk proses identifikasi selanjutnya. Hasil dari penelitian yang telah dilakukan pada sampel alga koralin yang didapat di Perairan Meras, Kecamatan Bunaken adalah terdapat 2 jenis spesies alga koralin bentuk tidak bercabang (non geniculate) yaitu Peyssonnelia caulifera dan Peyssonnelia orientalis serta 1 jenis spesies alga koralin bentuk bercabang (geniculate) yaitu Tricleocarpa fragilis yang berhasil teridentifikasi.Kata Kunci: Identifikasi, Alga Koralin, Meras
Antibacterial Activity of Endophytic Bacteria of Seagrass Symbiont Enhalus acoroides from Tiwoho Waters, North Minahasa Purniasih, Ni Komang Pitri; Ginting, Elvy Like; Wullur, Stenly; Mangindaan, Remy E. P.; Rumampuk, Natalie D. C.; Pratasik, Silvester Benny
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.v10i2.42485

Abstract

Nutrient-poor marine bacteria are often found to form a living mechanism by associating with other marine organisms such as seagrass Enhalus acoroides. Seagrass serves as a habitat for marine biota and is known to produce bioactive compounds. Endophytic and epiphytic microbes that are symbiotic in seagrass have the ability to produce bioactive compounds similar to the bioactive compounds produced by their host. Therefore, this study aimed to obtain isolates of symbiont bacteria and to test their antibacterial activity.  The symbiotic bacteria isolates were tested for their antibacterial activity using gram-negative bacteria such as E. coli and S. typhi, and gram-positive bacteria such as S. aureus and S. mutans. Antibacterial activity test was carried out using the paper disc method. Observation of antibacterial activity was carried out for 3x24 hours by observing the growth of the resulting inhibition zone. The zone of inhibition was measured to determine the diameter and strength of the bioactive compounds produced by symbiotic bacteria.A total of six isolates of symbiotic bacteria were obtained from the seagrass Enhalus acoroides with varied morphological characteristics. The six isolates of symbiont bacteria showed antibacterial activity and could inhibit and kill pathogenic bacteria. Two of the six isolates of symbiotic bacteria that produced the largest diameter of the inhibition zone were isolates E (Ep1) 3,5 mm and F (En3) 4 mm in S. mutans test bacteria.Keywords: Antibacterial, Isolation, Enhalus acoroides, Symbionts, Tiwoho AbstrakBakteri laut yang miskin nutrisi banyak dijumpai membentuk mekanisme hidup dengan cara berasosiasi dengan organisme laut lainnya seperti lamun Enhalus acoroides. Lamun berfungsi sebagai habitat biota laut dan diketahui dapat menghasilkan senyawa bioaktif. Mikroba endofit dan epifit yang bersimbiosis pada lamun mempunyai kemampuan untuk memproduksi senyawa-senyawa bioaktif yang serupa dengan senyawa bioaktif yang diproduksi inangnya. Oleh karena itu, penelitian ini bertujuan untuk mendapatkan isolat bakteri simbion serta menguji aktivitas antibakterinya.  Isolat bakteri simbion diuji aktivitas antibakterinya menggunakan bakteri uji gram negatif seperti E. coli dan S. typhi, dan bakteri uji gram positif seperti S. aureus dan S. mutans. Uji aktivitas antibakteri dilakukan menggunakan metode kertas cakram. Pengamatan aktivitas antibakteri dilakukan selama 3x24 jam dengan mengamati pertumbuhan zona hambat yang dihasilkan. Zona hambat diukur untuk mengetahui diameter dan kekuatan senyawa bioaktif yang dihasilkan oleh bakteri simbion.  Sebanyak enam isolat bakteri simbion yang didapatkan dari lamun Enhalus acoroides dengan karakteristik morfologi yang bevariasi. Keenam isolat bakteri simbion menunjukkan adanya aktivitas antibakteri dan dapat menghambat serta membunuh bakteri pathogen. Dua dari enam isolat bakteri simbion menghasilkan diameter zona hambat terbesar adalah isolat E (Ep1) 3,5 mm dan F (En3) 4 mm pada pada bakteri uji S. mutans.Kata kunci: Antibakteri, Isolasi, Enhalus acoroides, Simbion, Tiwoho
Study Feeding Different Food Types to The Growth and Survival Rate of Nile Fingerlings, Oreochromis niloticus Pattirane, Chrisoetanto P.; Wahyudi, Dzikri; Sangkia, Frederik Dony; Hapsari, Larasati Putri
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.v10i2.43127

Abstract

All operations of aquaculture production rely upon the 60% of feed role as an energy source and nutrition for the growth and survival rate of aquatic organisms, especially tilapia fish. This research aims to study feeding different food types to the growth and survival rate of tilapia fingerlings. A sample of fingerlings was derived from the Centre for Aquaculture Production Business Service (BLUPPB) Karawang and reared in Aquaculture Teaching Factory. The fingerlings were stocked with as many as 5 ind/L with three treatments i.e Azolla (P1), artificial feed (P2), and a combination of Azolla and artificial feed (P3). The growth-based length of fingerlings fed by Azolla (P1) is 6 – 7.76 cm, commercial pellet feed (P2) 6 – 11.81 cm, and combination Azolla and commercial pellet feed 6-9.36 cm. The growth-based weight of fingerlings fed by Azolla (P1) is 4 – 5.87 g, commercial pellet feed 4 – 25.11 g, and a combination of Azolla and commercial pellet feed 4 – 11.27 g. The survival rate of fingerlings fed by Azolla is 23%, commercial pellet feed 88%, and combination Azolla and commercial pellet feed 91%.Keywords: Azolla, commercial pellet feed, fingerlings, growth, survival rateAbstrakSeluruh operasional produksi akuakultur sangat bergantung dari 60% peran pakan sebagai sumber nutrisi dan energi bagi pertumbuhan dan tingkat kelangsungan hidup organisme akuatik dalam hal ini ikan nila. Penelitian ini bertujuan untuk melakukan studi terkait pemberian jenis pakan berbeda terhadap pertumbuhan dan tingkat kelangsungan hidup benih ikan nila. Sampel benih ikan nila berasal dari Balai Layanan Usaha Produksi Perikanan Budidaya (BLUPPB) Karawang dan dipelihara di Teachign Factory Budidaya Ikan. Ikan yang dipelihara adalah sebanyak 5 ind/L dengan tiga perlakuan meliputi pakan azolla (P1), pakan pellet komersil (P2) dan kombinasi palat azolla dan pellet komersil (P3). Pertumbuhan panjang ikan yang diberikan perlakuan pakan azolla (P1) adalah 6 - 7.76 cm, pakan pellet komersial (P2) 6 - 11.81 cm dan perlakuan kombinasi pakan pellet komersil dan azolla (P3) 6 - 9.36 cm. Pertumbuhan berat ikan dari perlakuan pakan azolla (P1) 4 – 5.87 g, perlakuan pellet komersial (P2) 4 – 25.11 g dan perlakuan kombinasi pakan pellet komersil dan azolla (P3) 4 – 11.27 g. Tingkat kelangsungan hidup benih ikan nila yang diberikan perlakuan pakan azolla adalah sebesar 23%, pakan pellet komersil 88% dan kombinasi pakan azolla dan pellet komersil adalah 91%.Kata Kunci: azolla, benih, pakan pellet komersil, pertumbuhan, tingkat kelangsungan hidup.
Analysis Of Weather Conditions and Hydrodynamics in Taman Nasional Bunaken Molle, Ben Arther; Schaduw, Joshian Nicolas William; Sumilat, Deiske Adeliene; Rondonuwu, Ari Berty; Luasunaung, Alfret; Warouw, Veibe
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.v10i2.43161

Abstract

Taman Nasional Bunaken (TNB) is located in North Sulawesi Province, Republic of Indonesia. TNB offers an exploration experience of marine tourism such as snorkeling and diving. This study was conducted to determine the statistics and correlation of weather parameters on hydrodynamics in the waters of the small island of TNB. This information can be used by marine tourism users. The weather data studied are wind direction and speed. The hydrodynamic conditions studied were wave height and ocean currents. Respondent surveys were also conducted on tourist users at the research sites. The wind direction for the period January - April is dominant from the Northeast, May - September is dominant from the East to the South, October tends to be evenly distributed from the East to the West, and November - December is dominant from the West. Significant wind speeds that occur in January, February, and March range from 18 – 36 knots. The average wave height shows a significant value in January – March, tends to be lower in April – June, fluctuates in July – November, and increases again in December. The maximum current velocity at a sea depth of 16.5 m is stronger than the maximum speed at a depth of 0.5 m and 8.0 m in January – April, and May August. The correlation value of wind speed and sea wave height is significant at 0.96 and the correlation between wind speed and the current speed is 0.74. These results indicate that there is a strong -very strong relationship between parameters. The survey results show that wind speed, wave height, and ocean currents have the same pattern. January, February, November, and December are the months of extreme or bad weather and hydrodynamic conditions.Keywords: Taman Nasional Bunaken, Weather, Hydrodynamics, CorrelationAbstrakTaman Nasional Bunaken (TNB) terletak di Provinsi Sulawesi Utara, Negara Republik Indonesia. TNB  menawarkan pengalaman eksplorasi suasana wisata bahari seperti snorkling dan diving. Penelitian ini dilakukan untuk mengetahui statistik dan korelasi parameter cuaca terhadap hidrodinamika di perairan pulau kecil TNB. Informasi tersebut dapat digunakan oleh pengguna wisata bahari. Data cuaca yang diteliti adalah arah dan kecepatan angin. Kondisi hidrodinamika yang diteliti ialah tinggi gelombang dan arus laut. Survei responden juga dilakukan kepada pengguna wisata di lokasi penelitian. Arah angin periode Bulan Januari - April dominan dari arah Timur Laut, Bulan Mei – September dominan dari arah Timur hingga Selatan, Bulan Oktober cenderung merata dari arah Timur hingga Barat dan Bulan November – Desember dominan dari arah Barat. Kecepatan angin signifikan terjadi pada bulan Januari, Februari, dan Maret berkisar antara 18 – 36 Knot. Rata-rata tinggi gelombang menunjukan nilai signifikan pada bulan Januari – Maret, cenderung merendah pada bulan April – Juni, berfluktuasi pada bulan Juli – November dan meningkat kembali di bulan Desember. Kecepatan maksimum arus laut di kedalaman 16.5 m lebih kuat jika dibandingkan kecepatan maksimum di kedalaman 0.5 m dan 8.0 m pada bulan Januari – April serta bulan Mei – Agustus. Nilai korelasi kecepatan angin dan tinggi gelombang laut signifikan sebesar 0.96 serta korelasi kecepatan angin dan kecepatan arus sebesar 0.74. Hasil tersebut menunjukkan antar parameter memiliki hubungan yang kuat - sangat kuat. Hasil survei menunjukan kecepatan angin, tinggi gelombang dan arus laut mempunyai pola yang sama. Bulan Januari, Februari, November, dan Desember merupakan bulan-bulan terjadinya kondisi cuaca serta hidrodinamika ekstrem atau buruk.Kata kunci: Taman Nasional Bunaken, Cuaca, Hidrodinamika, Korelasi
Study of the Use of Seagrass Bait on Bebihe Catches in the waters of the Sea Beg, South Central Tabukan District, Sangihe Islands Regency Larungkondo, Jerialdy; Labaro, Ivor Lembondorong; Pangalila, Fransisco P.T.; Budiman, Johnny; Manoppo, Lefrand; Silooy, Fanny
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

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Abstract

AbstractBubu fisheries have developed well in all Indonesian waters, especially in coastal areas that have coral reef and seagrass habitats. Generally, the commodities targeted for fishing are types of reef fish and seagrass beds that have a high selling value, such as snapper, grouper, baronang, yellowtail, lobster, octopus, and others. Bubu fishing gear or traps called bebihe local people are one of the fishing gear used to catch demersal fish or reef fish. The success of the bubu fishing operation is greatly influenced by the construction of the bebihe fishing gear itself and the treatment of the bait used. The use of seagrass bait, allegedly can increase the catching ability of the bebihe. However, scientific information on the use of seagrass as a bait for bebihe for fishing is not yet available. Therefore, the purpose of this study is to determine the effectiveness of seagrass baits with the comparison of kitefish in the operation of bebihe; and identify the types of fish caught.This research was carried out in the waters of Beeng Laut island, South Central Tabukan District, Sangihe Islands Regency; is based on experimental methods. Six bebihe units were operated during nine trips to collect data; where three units use seagrass bait of the type Thalassia hemprichii, and the other three units use kite fish bait; and then the catch data is analyzed by a t-test.The catch of bebihe during the study amounted to 363 heads, as many as 345 were caught with seagrass baits, and 18 were caught with kite baits. Analysis of the t-test showed that at t count = 5.480 > t table 0.05;8 = 2.306; where this explains that the use of seagrass bait on bebihe, gives a noticeablely different catch compared to kitefish bait.
Carbon Absorption in Seagrasses in Tongkaina Coastal Waters, Bunaken District, Manado City, North Sulawesi Namoua, Dilivia J.; Wantasen, Adnan S.; Kondoy, Khristin I. F.; Kepel, Rene Ch.; Menajang, Febry S. I.; Pelle, Wilmy
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

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Abstract

This study was conducted to determine the types of seagrasses and calculate biomass and calculate how much carbon absorption in seagrasses was found in the location of Tongkaina Beach, Bunaken District, Manado City, North Sulawesi. The sampling procedure in the field is the method of cruising surveys. A cruising survey is a sample collection method that is carried out by walking through the coastal area of all seagrasses found.  After the sampling at the site is completed, the sample in the inventory is then photographed. The samples that have been obtained are analyzed in the laboratory using the loss on ignition (LOI) method. The results of the study on Tongkaina coastal waters covering an area of 25,000 meters with a coastal length of ±500 meters, in an area parallel to the coastline as wide as ±50 meters towards the sea and six types of seagrasses were obtained, namely: Enhalus acoroides, Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, Halodule uninervis, and Halodule pinifolia.  The biomass in seagrasses found had an average value of 78.10% with the highest individual seagrass biomass found in seagrass type Enhalus acoroides with a biomass value of 87.23grams of dry weight (gbk)/individual and the lowest type of seagrass individual biomass value was found in seagrass type seagrass with a biomass value of 66.67grams of dry weight (gbk)/individual.  The total carbon content calculated in the entire seagrass obtained was 46,0941gCKeywords: Tongkaina Beach; seagrasses; biomass; carbon absorptionAbstrakPenelitian ini dilakukan untuk mengetahui jenis-jenis lamun dan menghitung biomassa serta menghitung berapa serapan karbon pada lamun yang ditemukan dilokasi Perairan Pantai Tongkaina Kecamatan Bunaken Kota Manado Provinsi Sulawesi Utara. Prosedur pengambilan sampel di lapangan menggunakan metode survei jelajah. Survei jelajah adalah metode pengumpulan sampel yang di lakukan dengan cara menyusuri daerah pantai terhadap semua lamun yang ditemukan. Setelah pengambilan sampel di lokasi selesai, sampel di inventarisir kemudian difoto. Sampel yang telah diperoleh dianalisa di laboratorium dengan menggunakann metode loss on ignition (LOI). Hasil penelitian pada perairan pantai Tongkaina seluas 25.000 meter dengan panjang pantai ±500 meter sejajar garis pantai dan lebar ±50 meter ke arah laut.  Ditemukan enam jenis lamun yaitu: Enhalus acoroides, Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, Halodule uninervis dan Halodule pinifolia. Biomassa pada lamun yang ditemukan memiliki nilai rata-rata 78,53% dengan biomassa individu lamun tertinggi terdapat pada lamun jenis Enhalus acoroides dengan nilai biomassa mencapai 87,23gram berat kering (gbk)/individu dan nilai biomassa individu jenis lamun terendah terdapat pada lamun jenis Syringodium isoetifolium dengan nilai biomassa 66,67gram berat kering (gbk)/individu. Untuk total kandungan karbon yang dihitung pada keseluruhan lamun yang didapat sebesar 46,0941gC.Kata kunci: Pantai Tongkaina; Lamun; biomasa, serapan carbon
Catch Per Unit Effort (Cpue) Of Purse Seine Fishery For A Period Of 5 Years At The Tumumpa Coastal Fishing Port Saragih, Mariana; Labaro, Ivor Lembondrong; Pamikiran, Revols D. Ch; Manoppo, Lefrand; Silooy, Fanny
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.v11i1.43527

Abstract

This study aims to analyze the five-year development of CPUE (catch per unit effort) and to find out the fishing effort of ring seine at PPP Tumumpa and its effect on CPUE periodically. Based on the research results, the CPUE value of large pelagics has decreased every year, where the CPUE value in 2017 was 25.42%, in 2018 it was 25.08%, in 2019 it was 17.71%, in 2020 it was 17.10%. , the last in 2021 was 14.66% and for small pelagics, the CPUE value decreased, where the CPUE value in 2017 was 21.70%, in 2018 it was 17.92%, in 2019 it was 17.19%, in 2018 it was 17.19%. in 2020 is 23.13%, and the last in 2021 is 20.04%. Utilization rates in large and small pelagics are in a state of concern as CPUE decreases yearly.Keywords:  CPUE, production data, purse seine, utilization rate.AbstrakPenelitian ini bertujuan untuk menganalisis perkembangan lima tahun CPUE (catch per unit effort) dan mengetahui upaya penangkapan perikanan pukat cincin di PPP Tumumpa serta pengaruhnya terhadap CPUE secara periodik. Berdasarkan hasil penelitian nilai CPUE pelagis besar mengalami penurunan setiap tahun, dimana nilai CPUE pada tahun 2017 yaitu 25,42 %, pada tahun 2018 yaitu 25,08 %, pada tahun 2019 yaitu 17,71 %, pada tahun 2020 yaitu 17,10 %, terakhir pada tahun 2021 yaitu 14,66 % dan untuk pelagis kecil nilai CPUE mengalami penurunan, dimana nilai CPUE pada tahun 2017 yaitu 21,70 %, pada tahun 2018 yaitu 17,92 %, pada tahun 2019 yaitu 17,19 %, pada tahun 2020 yaitu 23,13 %, dan terakhir pada tahun 2021 yaitu 20,04 %. Tingkat pemanfaatan pada pelagis besar dan kecil berada dalam keadaan mengkhawatirkan karena CPUE mengalami penurunan setiap tahun.Kata Kunci: CPUE, data produksi, pukat cincin, tingkat pemanfaatan. 

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