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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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Community Structure and Percent Cover of Mangrove in Gamtala Village, Jailolo District, West Halmahera Regency Nity, Elroi; Darwisito, Suria; Schaduw, Joshian N.W.; Wantasen, Adnan S.; Sumilat, Deiske A.; Onibala, Hens
Jurnal Ilmiah PLATAX Vol 7, No 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.23377

Abstract

This study aims to know the percent cover of mangrove and to assess the community structure. It was carried out in Gamtala village, Jailolo district, and west Halmahera regency, using line transect method with 10x10 m plot.. Data analysis covered the community structure and percent cover of mangrove canopy. This study found seven mangrove species, Bruguiera gymnorrhiza, Rhizophora apiculata, Sonneratia alba, Rhizophora mucronata, Avicennia alba, Bruguiera sexangula, dan  Xylocarpus granatum. Based on Importance Value Index (IVI), Bruguiera gymnorhiza had the highest, 149.06, and Avcsennia alba did the lowest, 9.3507. In addition, Gamtala village had manrove percent cover of 72.11 %.Keywords: canopy, community structure, mangrove, Gamtala.ABSTRAKTujuan dari penelitian ini adalah untuk mengetahui persentasi tutupan mangrove dan menghitung struktur. Penelitian ini dilakukan di Desa Gamtala Kecamatan Jailolo Kabupaten Halmahera Barat. Penelitian ini menggunakan metode transek garis dengan 10x10 m plot. Penelitian ini menemukan tujuh spesies mangrove, yaitu Bruguiera gymnorrhiza, Rhizophora apiculata, Sonneratia alba, Rhizophora mucronata, Avicennia alba, Bruguiera sexangula, dan  Xylocarpus granatum. Berdasarkan Indeks Nilai Penting, Bruguiera gymnorhiza memiliki nilai tertinggi, 149,06, dan Avcsennia alba memiliki nilai terendah 9,3507. Sebagai tambahan, desa Gamtala memiliki tutupan mangrove sebesar 72,11 %.Kata Kunci: kanopi, struktur komunitas, mangrove, Gamtala
Sea cucumber community in the coastal area of the Bahoi Village,West Likupang Sub-district, North Minahasa District Andia Tri Fritama Lumbu; Lawrence J. L. Lumingas; Gaspar D. Manu
Jurnal Ilmiah PLATAX Vol. 8 No. 1 (2020): ISSUE JANUARY-JUNE 2020
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.8.1.2020.27601

Abstract

This research is conducted in the coastal waters of Bahoi Village, West Likupang Sub-district, North Minahasa District with the aims to know the types of sea-related environmental factors in the research site and know the community structure of the sea cucumber including the density, Index of diversity, dominance index, and distribution patterns. Data collection was done by using the line transect method, and sampling technique by using quadrat. The results of the study found 5 species of sea cucumber i.e. Holothuria atra,  Holothuria scabra,  Bohadschia marmorata, Actinopyga echinites, and  Bohadschia vitiensis. The individual density of all species is 0.12 ind/m2, and the diversity index (H ') 0.950. The value of the similarity index/compatibility obtained is e = 0.918. The result of the calculated dominance index of sea cucumber species is 1.0 and the pattern of spreading species of sea cucumber in the research site shows a random spread pattern because the value of dispersion index  (I) approaches 1 (one). Keywords: community; Sea cucumber; Bahoi; Dominance; Diversity.AbstrakPenelitian ini dilakukan di perairan pantai desa Bahoi, Kecamatan Likupang Barat, Kabupaten Minahasa Utara dengan tujuan untuk mengetahui jenis-jenis teripang yang ada di lokasi penelitian dan mengetahui struktur komunitas teripang yang meliputi kepadatan, indeks keanekaragaman, indeks dominasi, dan pola penyebaran. Pengambilan data dilakukan dengan metode line transek, dan teknik pengambilan sampel dengan mengunakan kuadrat. Hasil penelitian ditemukan 5 spesies teripang yaitu Holothuria atra, Holothuria scabra, Bohadschia marmorata, Actinopyga echinites dan Bohadschia vitiensis. Kepadatan individu dari seluruh spesies yaitu 0,12 ind/m2, indeks keanekaragaman (H’) 0,950. Nilai indeks kemerataan/keserasian diperoleh nilai indeks e = 0,918. nilai indeks dominasi spesies teripang diperoleh 1,0 dan pola penyebaran spesies teripang dilokasi penelitian menunjukkan pola sebaran acak (random) dikarenakan nilai indeks dispersi (I) mendekati 1 (satu).Kata Kunci : Komunitas; Teripang; Perairan Bahoi; Dominasi; Keanekaragaman
Distribution of Pocillopora verrucosa (Ellis dan Solander, 1786) at the Reef Flat of South Coast Putus-Putus Island East Ratatotok, Ratatotok District Southeast Minahasa Regency Jesika Haryati Nasaru; Laurentius T. X. Lalamentik; Unstain N. W. J. Rembet
Jurnal Ilmiah PLATAX Vol. 5 No. 1 (2017): ISSUE JANUARY - JUNE 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.1.2017.15152

Abstract

This research was conducted at the reef flat of south Putus-Putus Island, East Ratatotok, Ratatotok district, Southeast Minahasa Regency. The study aims to identify the distribution of P. verrucosa reefs in the reef flat area of Putus-Putus Island. This research is able to be utilized as an informations resource, and also able to contribute an effort in order to manage the coral reefs in the Ratatotok area in the near future. The sample is obtained with using simple random method, which collects the data randomly as the sample collecting system by drawing way or by using random number table. The random number table contains with some amount of numbers which is formed with coloumn and rows, and the drawing is done freely.  There was three point of study site determined, and geographical location of every site was noted, the north and east latitude. In every point of the site was put quadrant with 10 x 10 m, where every quadrant is divided into 100 quadrants with 1 x 1 m sized. The every 1 x 1m quadrant was made grid with 10 x 10m (100 grids for every quadrant). The percentage of the reef’s cover at the first station is (0,28%), the second station (1,4%). and the third station (1,41%). Based on the study’s result, the highest reef’s cover percentage is in the third station (1,41%) which is located further from the strait, whereas the lowest reef’s cover percentage is in the first station (0,28%) located near the strait. The distribution scheme of P.verrucosa from the three stations are grouping (Id> 1). There is no noticeable diffrences from the three location for the cover percentage, the diameter and the distribution scheme. The ANOVA test showed that the amount of the colony : Hhit (1.25) < Ftah (3.10) the H0 was accepted, where there was no noticeable differences from the amount of the colony in the three stations. The diameter : Fhit (1.40) < Ftab (3.10)  means H0 accepted, and there was no noticeable differences in the diameters. The percentage of the cover : where Fhit (0.71) < Ftab (3.10 ) means H0 accepted, and there was no noticeable differences in the diameters of the three stations. Keyword : Distribution, Coral P. verrucosa Penelitian ini dilaksanakan di pantai selatan Pulau Putus-Putus Desa Ratatotok Timur Kecamatan Ratatotok Kabupaten Minahasa Tenggara. Penelitian ini dilakukan untuk mengetahui distribusi karang P.verrucosa di rataan terumbu Pulau Putus-Putus. Tujuan penelitian yaitu mengetahui distribusi karang P.verrucosa di rataan terumbu Pulau Putus-Putus. Manfaat penelitian yaitu dapat menjadi sumber informasi dan mampu memberikan kontribusi bagi upaya pengelolaan terumbu karang di wilayah Ratatotok di masa yang akan datang. Pengambilan data dilakukan dengan menggunakan metode pengambilan acak sederhana. Pengambilan acak sederhana merupakan sistem pengambilan sampel secara acak dengan menggunakan undian atau tabel angka random  Tabel angka random merupakan tabel yang dibuat dan berisi angka-angka yang terdiri dari kolom dan baris, dan cara pemilihannya dilakukan secara bebas.  Pada lokasi penelitian ditentukan 3 titik pengambilan data, yang setiap titik dicatat posisi geografisnya, (lintang utara dan bujur timur). Pada setiap titik akan diletakan kuadran berukuran 10 x 10m, di mana pada masing masing kuadran tersebut dibagi menjadi 100 kuadran berukuran 1 x 1m. Pada setiap kuadran 1 x 1m dibuat grid berukuran  10 x 10 cm ( terdapat 100 grid setiap kuadran ). Persentase tutupan karang P. verrucosa Pada stasiun pertama (0,28 %), Stasiun kedua (1,4%), dan Stasiun ketiga (1,41%). Berdasarkan dari hasil yang di dapat bahwa persentasi tutupan karang tertinggi pada stasiun ke tiga yang jauh dari selat (1,41 %) sedangkan tutupan terendah yaitu stasiun pertama dekat dengan selat (0,28 %). Pola distribusi karang P. verrucosa pada ketiga stasiun adalah mengelompok (Id> 1). Pada ketiga stasiun ini tidak terdapat perbedaan nyata dalam hal Persentase tutupan, diameter dan pola distribusi. Dari uji ANOVA Jumlah koloni: dimana Fhit (1.25) < Ftab (3.10) artinya Ho diterima, bahwa tidak ada perbedaan nyata jumlah koloni pada ketiga stasiun tersebut. Jumlah Diameter: dimana Fhit (1) < Ftab (3.10) artinya Ho diterima, bahwa tidak ada perbedaan nyata dalam hal jumlah diameter. Jumlah Persentase tutupan: dimana Fhit (1.17) < Ftab (3.10 ) artinya Ho diterima,bahwa tidak ada perbedaan nyata jumlah diameter pada ketiga stasiun tersebut.
Masculinization By Using Method Of The Immersion And Oral To Genital Change Of Tilapia Oerochromis niloticus Mangaro, Ramlesius; Sinjal, Hengky J.; Monijung, Revol D.
Jurnal Ilmiah PLATAX Vol 6, No 1 (2018): ISSUE JANUARY-JUNE 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.1.2018.18908

Abstract

This research activity was conducted at Balai Pembenihan, Pengendalian Hama dan Penyakit Tateli from August -September 2017. The treatment in this study was masculinization by using Immersion Method (P), Oral (O) and Control or without hormone addition (K). In the method of immersion with a dose of 10 mg / L water / 100 larvae in soak for 6 hours. Oral Method with a dose of 15 mg / kg of feed hormone, administration for 14 days. Control is maintenance without treatment. The result of male sex test identification at the end of the experiment was obtained by the percentage of males after the highest treatment was Oral (O) treatment of 92.57%, the immersion treatment (P) of 89.53%, and the last was Control (K) , 73%. The survival rate (SR) of the test fish during the 50 days of trial maintenance was highest in Oral test fish, 61.67% followed by Immersion 53% and 38.67% Control. Keywords : Fish,  Immersionn, Masculinization, Oral, Survival, TilapiaAbstrakPenelitian ini dilakukan di Balai Pembenihan, Pengendalian hama dan Penyakit Tateli dari bulan Agustus – September 2017.  Perlakuan dalam penelitian ini adalah maskulinisasi dengan menggunakan metode Peredaman (P), Oral (O) dan Kontrol atau tanpa penambahan hormon (K). Pada metode Perendaman dengan dosis 10 mg/L air/100 ekor larva di rendam selama 6 jam. Metode Oral dengan dosis hormon 15 mg/Kg pakan, pemberian selama 14 hari. Kontrol adalah pemeliharaan tanpa perlakuan. Hasil identifikasi kelamin jantan ikan uji pada akhir percobaan didapat persentase jantan setelah perlakuan tertinggi adalah perlakuan Oral (O) sebesar 92,57 %, perlakuan Perendaman (P) sebesar 89,53 %, dan yang terakhir adalah Kontrol (K) dengan hasil sebesar 52,73 %. Persentase kelangsungan hidup (SR) ikan uji selama pemeliharaan 50 hari percobaan adalah yang tertinggi terdapat pada ikan uji Oral  yaitu sebesar 61,67%  diikuti dengan Perendaman sebesar 53 % dan Kontrol sebesar 38,67  %.Kata kunci : Ikan, Maskulinisasi, Perendaman, Oral, Kelangsungan Hidup, Nila
Otolith biometry analysis of betong fish, Selar crumenophthalmus (Bloch, 1793) (Teleostei: Carangidae) in Manado Bay, North Sulawesi Saiful Bahri; Lawrence J. L. Lumingas; Fransine B. Manginsela
Jurnal Ilmiah PLATAX Vol. 6 No. 2 (2018): ISSUE JULY-DECEMBER 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.2.2018.21075

Abstract

This study aims to examine whether there are differences in the size and shape of otolith both between sexes and between the sampling times of bigeye scad Selar crumenophthalmus in  Manado Bay, North Sulawesi. Most of the otolith sizes and the otolith shape indices do not show any significant differences between left and right, some of which show statistically significant differences such as the otolith length and the indices of the roundness, ellipticity and aspect ratio of female fish at August 2017 and otolith length, otolith width and otolith perimeter of male fish at November 2017. The otolith sizes and shape indices do not differ between sexes but differ between sampling times ie August 2017 and November 2017. Otolith sizes such as length, width, area and perimeter and shape indices such as circularity and rectangularity can be used as indicators of stock determination. Other shape indices of otolith such as form factor, roundness, ellipticity and aspect ratio are not well used as stock determination. Most of the samples showed a negative allometric growth pattern, except in the sample of female fish sampled in November 2017 which showed an isometric growth pattern for all otolith size variables. There is no statistically significant difference in the regression line of the otolith sizes - total length between sexes, but there is a statistically very significant difference in the regression line between sampling times (months) where the otolith size is greater in November 2017 or in other words at the same length of fish, otolith sizes bigger in November 2017 than in August 2017. The otolith sizes and their relationship with the total length of the fish can be used for determining (separating) the stock of bigeye scad Selar crumenophthalmus. There is a possibility that the sample for August 2017 is a different stock with samples from November 2017.Key words: Selar crumenophthalmus, otolith, morphometry, stock identification, Manado Bay ABSTRACTPenelitian ini bertujuan untuk menguji apakah terdapat perbedaan ukuran dan bentuk otolit  baik antar seks maupun antar waktu pengambilan sampel ikan selar betong Selar crumenophthalmus di Teluk Manado Sulawesi Utara. Sebagian besar ukuran serta indeks bentuk otolit tidak menunjukkan perbedaan yang nyata antara kiri dan kanan, beberapa di antaranya menunjukkan perbedaan yang nyata secara statistik misalnya ukuran panjang otolit serta indeks bentuk otolit ‘roundness’, ‘ellipticity’ dan ‘aspect ratio’ pada ikan betina Agustus 2017 dan ukuran panjang otolit, luas otolit dan keliling otolit pada ikan jantan November 2017. Ukuran dan indeks bentuk otolit tidak berbeda antar jenis kelamin tetapi berbeda antar waktu sampling yakni Agustus 2017 dan November 2017. Ukuran otolit seperti panjang, lebar, luas dan keliling otolit serta indeks bentuk seperti ‘circularity’ dan ‘rectangularity’ dapat digunakan sebagai indikator penentu stok. Indeks bentuk otolit lainnya seperti ‘form factor’, ‘roundness’, ‘ellipticity’ dan ‘aspect rasio’ kurang baik digunakan sebagai variable penentu stok. Sebagian besar sampel menunjukkan pola pertumbuhan alometri negatif, kecuali pada sampel ikan betina yang disampling pada November 2017 yang memperlihatkan pola pertumbuhan isometrik untuk semua variabel ukuran otolit. Tidak terdapat perbedaan garis regresi ukuran otolit - panjang total antar seks, tetapi terdapat perbedaan yang sangat nyata garis regresi tersebut antar waktu sampling (bulan) di mana ukuran otolit lebih besar pada bulan November 2017 atau dengan kata lain pada panjang ikan yang sama, ukuran otolit lebih besar pada bulan November 2017 dibandingkan dengan pada bulan Agustus 2017.           Ukuran otolit serta hubungan regresi dengan panjang total ikannya dapat digunakan untuk penentuan (pemisahan) stok ikan selar betong Selar crumenophthalmus. Ada kemungkinan sampel bulan Agustus 2017 merupakan stok yang berbeda dengan sampel bulan November 2017.Kata kunci: Selar crumenophthalmus, otolit, morfometri, identifikasi stok, Teluk Manado
Growth study of coi fish larvae fed chydoridae Henneke Pangkey; Sartje Lantu; Revol D. Monijung
Jurnal Ilmiah PLATAX Vol. 7 No. 2 (2019): ISSUE JULY - DECEMBER 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.2.2019.24867

Abstract

First culture media for chydoridae used horse manure dried in the sun with a composition of 10 grams and 50 grams of soil dissolved in 1 L of water for 5 days, then filtered and diluted three times. Laboratory-scale cultures were carried out in a 500 ml volume jar containing horse manure culture media; then in the process fed with bread yeast and rice bran (0.05 gr yeast and rice bran/500 ml) every 3 days. Mass culture uses 12 jar containers with a volume of 3 L.The administration of chydoridae to two-day old koi fish larvae was carried out with the following treatments: treatment A, which was ornamental fish fed with boiled egg yolk in ad libitum; treatment B is ornamental fish fed with 5 individual chydoridae/ml and treatment C, which is not given any food with three replications. The design of the response in this study was to see the survival rate of ornamental fish larvae (%).The results of measurements of water quality during the study showed that the temperature during the study was 27°C, while the pH was 7. From the statistical analysis it was found that administration of chydoridae had a significant effect on the survival of two-day-old koi fish larvae which were kept for 14 days.Keywords: chydoridae, life feed, ornamental fish larvae, growthABSTRAKMedia kultur awal chydoridae menggunakan kotoran kuda yang dikeringkan di bawah sinar matahari dengan komposisi 10 gram kotoran kuda serta 50 gram tanah yang dilarutkan dalam 1 L air selama 5 hari, kemudian dilakukan penyaringan dan diencerkan sebanyak tiga kali.  Kultur skala laboratorium dilakukan dalam wadah toples dengan volume 500 ml berisi media kultur kotoran kuda; selanjutnya dalam proses kultur chydoridae diberi makan ragi roti dan dedak (0,05 gr ragi dan dedak /500 ml) setiap 3 hari sekali. Kultur massal menggunakan wadah toples sebanyak 12 buah dengan volume 3 L dengan mengikuti metode pada kultur skala laboratorium.Pemberian chydoridae kepada larva ikan koi yang berumur dua hari dilakukan dengan beberapa perlakuan sebagai berikut : perlakuan A yaitu  ikan hias diberi makan kuning telur rebus secara ad libitum; perlakuan B yaitu  ikan hias diberi makan chydoridae 5 individu/ml dan perlakuan C yaitu  ikan hias tidak diberi makan apapun dengan tiga ulangan.  Rancangan respons dalam penelitian ini adalah melihat laju kelangsungan hidup larva ikan hias (%).Hasil pengukuran kualitas air selama penelitian menunjukkan, suhu selama penelitian adalah 27 °C, sedangkan pH adalah 7.  Dari hasil analisis statistik diperoleh bahwa pemberian chydoridae sangat memberi pengaruh nyata kepada kelangsungan hidup larva ikan koi berumur dua hari yang dipelihara selama 14 hari.Kata kunci: chydoridae, pakan alami, larva ikan hias, pertumbuhan
Implementation of Environmentally Friendly Monitoring Method: "Green Watch" and "Image Analysis" in Sustainable Resource Utilization in the Coast Community of the Gulf of Amurang, North Sulawesi Fontje Georis Judri Kaligis; Medy Ompi
Jurnal Ilmiah PLATAX Vol. 4 No. 2 (2016): EDISI JULI-DESEMBER 2016
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.4.2.2016.14204

Abstract

Monitoring the condition of coral reefs using 'green watch' and 'image analysis' in the use of sustainable resource in the coastal communities of the Gulf of Amurang North Sulawesi has been conducted with the purpose of (1) to understand the condition of coral reefs in the waters of TEEP and Kapitu, (2) the coastal communities can utilize the method of 'green watch' and 'image analysis', and also can do the monitoring themselves both groups and individuals. Results of research by two methods illustrates that there are seven types of coral growth in the waters of Teep, and 8 types in the waters Kapitu village, where each type of coral growth showed different in percent cover. Overall reef condition for waters in the village of TEEP is very good with 79% of live coral, while the  Kapitu village is good with a percentage of live coral is 64%. With this condition is expected that the community can do the monitoring continuously, and also rehabilitate the damage corals. By doing so the resources will be always available for both village.   Keywords: Coral Reef, associate organisms, 'green watch', 'image analysis', live coral  and dead coral, percent cover, Abstrak Monitoring kondisi terumbu karang dengan menggunakan metode ‘green watch’ dan ‘ image analysis’ dalam pemanfaatan sumberdaya yang berkelanjutan di komunitas pesisir Teluk Amurang Sulawesi Utara telah dilakukan dengan tujuan (1) memahami kondisi terumbu karang di perairan Teep dan Kapitu, (2) masyarakat nelayan dapat memanfaatkan metode ‘green watch’ dan ‘image analysis’, sekaligus melakukan monitoring secara mandiri baik kelompok maupun individu.  Hasil penelitian dengan dua metode ini menggambarkan bahwa ada 7 tipe pertumbuhan karang di desa Teep, dan 8 tipe di perairan desa Kapitu, di mana masing masing tipe pertumbuhan karang hadir dengan presentase tutupan yang berbeda.  Kondisi karang secara keseluruhan untuk perairan di Desa Teep adalah yang sangat bagus dengan 79 % karang hidup, sedang untuk desa Kapitu adalah cukup bagus dengan presentase karang hidup adalah 64 %.  Dengan kondisi ini diharapkan masyarakat dapat mempertahankan, dengan cara melakukan kegiatan monitoring secara berkesinambungan, sekaligus merehabilitasi kondisi karang yang telah rusak. Dengan  mempertahankan kondisi yang baik ini maka servis dari ekosistem ini terhadap masyarakat di kedua Desa ini akan terus ada.   Kata kunci: Terumbu Karang, organisme asosiasi, ‘green watch’, ‘image analysis’, karang hidup, karang mati, persentase tutupan.
Development Of Community Based Ecotourism In Bahoi Village, West Likupang District, North Minahasa Regency Asari, Ayu; Toloh, Boyke H.; Sangari, Joudy R. R.
Jurnal Ilmiah PLATAX Vol 6, No 1 (2018): EDISI JANUARI-JUNI 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.1.2018.17877

Abstract

In the spatial development of North Sulawesi Province, Bahoi Village is one of the coral reef conservation development areas developed into community based ecotourism village. One area that has the potential is Bahoi Village District West Likupang North Minahasa District with the concept of marine community-based ecotourism. This potential is supported by Regional Regulation No. 1 of 2014 in North Sulawesi Province Spatial Planning. This study aims to determine the status of ecotourism development in Bahoi Village and evaluate the principles and concepts of ecotourism using a qualitative descriptive method. In this research, the data were taken by conducting literature study, verification, field survey, and an interview. Interviews were conducted using questionnaires as many as 18 questions/statements containing topics on the management of ecotourism in Bahoi Village, ecotourism concepts, and principles. Questions are presented and analyzed using R and SPSS programs. R is an integrated software unit with several facilities for manipulation, calculation, and reliable graphics performance. SPSS is an application that has a high enough statistical analysis capability and data management systems in the graphical environment by using descriptive menus in simple dialog boxes and easy to understand how to operate. Based on the results of the analysis, there are several problems concerning the management of ecotourism that still overlap, ecotourism principles that have not been reached, especially on economic principles, and the lack of community empowerment. Through this research it can be concluded that ecotourism of Bahoi Village has not given full impact, ecotourism management which is not good can, in turn, forget the economic interest of the local community, and there is urgent need to make Standard Operational Procedure (SOP) of ecotourism for community-based ecotourism management. Furthermore, the concept and principles of ecotourism that has not been applied thoroughly then need to be reviewed for better future.Keywords: development, marine ecotourism, ecotourism management, Bahoi villageABSTRAKDalam pengembangan tata ruang Wilayah Provinsi Sulawesi Utara. Desa Bahoi merupakan salah satu kawasan pengembangan koservasi terumbu karang yang dikembangkan menjadi Desa Ekowisata Berbasis Masyarakat.Salah satu wilayah yang memiliki potensi tersebut yaitu Desa Bahoi Kecamatan Likupang Barat Kabupaten Minahasa Utara dengan konsep ekowisata bahari berbasis masyarakat. Potensi ini didukung dengan Peraturan Daerah Nomor 1 Tahun 2014 tentang Rencana Tata Ruang Wilayah Provinsi Sulawesi Utara yaitu Desa Bahoi merupakan salah satu kawasan pengembangan konservasi terumbu karang.Penelitian ini bertujuan untuk mengetahui status pengembangan ekowisata yang ada di Desa Bahoi dan mengevaluasi prinsip-prinsip dan konsep ekowisata menggunakan metode deskriptif kualitatif. Dalam penelitian ini data di ambil dengan studi literature, verifikasi, survei lapangan dan wawancara. Wawancara dilakukan dengan menggunakan kuesioner sebanyak 18 Pertanyaan/pernyataan yang berisisi tentang pengelolaan ekowisata di Desa Bahoi, konsep dan prinsip-prinsip ekowisata. Pertanyaan disajikan dan di analisis menggunakan program R dan SPSS. R adalah suatu kesatuan software yang terintegrasi dengan beberapa fasilitas untuk manipulasi, perhitungan dan penampilan grafik yang handal. SPSS adalah sebuah program aplikasi yang memiliki kemampuan analisis statistik cukup tinggi serta sistem manajemen data pada lingkungan grafis dengan menggunakan menu-menu deskriptif dan kotak-kotak dialog yang sederhana sehingga mudah untuk dipahami cara pengoperasiannya. Berdasarkan hasil analisis yang dilakukan terdapat beberapa masalah mengenai pengelolaan ekowisata yang masih tumpang tindih, peinsip-prinsip ekowisata yang belum tercapai terutama pada prinsip ekonomi, kurangnya pemberdayaan masyarakat .Dari penelitian ini dapat ditarik kesimpulan ekowisata Desa Bahoi belum memeberi dampak secara menyeluruh, pengolaan ekowisata yang kurang baik dapat melupakan kepentingan ekonomi masyarakat lokal untuk itu perlu di buat Standar Operasional Prosedur ekowisata yang mengatur manajemen ekowisata,. Kosep dan prinsip-prinsip ekowisata yang belum diterapkan secara menyeluruh  maka perlu di kaji kembali.Kata Kunci: Kajian pengembangan, ekowisata bahari, pengelolaan Ekowisata, Desa Bahoi 
Characteristics of Reproduction of Yellowstripe Scad Selaroides leptolepis (Cuvier, 1833) In Manado Bay Waters Febrina Sinaga; Ferdinand F Tilaar; Nego E Bataragoa
Jurnal Ilmiah PLATAX Vol. 6 No. 2 (2018): ISSUE JULY-DECEMBER 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.2.2018.20622

Abstract

The waters of Manado Bay are areas that have a lot of biological resources. One of these resources is Yellowstripe scad (Selaroides leptolepis). The research was aimed to find out the reproduction characteristics of  Yellowstripe scad (Selaroides leptolepis) by looking at male and female sex ratio, growth pattern with male and female condition factor, maturity level of gonad (TKG), gonad maturity index (IKG), size at first maturity, and fecundity. The location of fish sampling is taken from the catch of fishermen in Manado Bay waters in not April-May 2018. Fish sampling using random draw method withdrawal. The number of samples is 200, taken four times in two months (April to May 2018). The sex ratio of Yellowstripe scad (Selaroides leptolepis) in the waters of Manado Bay is balanced. The growth pattern of male is positive allometric, while females is isometric. The condition of male and female fish are 0.9 and 1.3 respectively.  The Yellowstripe scad breeding season in Manado Bay waters takes place after the fourth week in April. The size of the first time ripe gonad Yellowstripe scad male and female 189 mm. The fecundity ranged from 1,960 - 29,145 with an average of 11,716 ± 6,088.Keywords: Yellowstripe scad, reproductive biology, Manado Bay ABSTRAKPerairan Teluk Manado adalah perairan  yang memiliki sumberdaya hayati cukup banyak. Salah satu sumberdaya di perairan tersebut yaitu ikan Selarkuning (Selaroides leptolepis). Penelitian itu bertujuan untuk mengetahui karakteristik reproduksi ikan Selarkuning (Selaroides leptolepis) dengan melihat dari rasio kelamin jantan dan betina, pola pertumbuhan dengan faktor kondisi pada jantan dan betina, tingkat kematangan gonad (TKG), indeks kematangan gonad (IKG), ukuran pertama kali matang gonad, dan fekunditas.       Sampel ikan diambil dari hasil tangkapan nelayan di perairan Teluk Manado pada bulan April-Mei 2018. Pengambilan sampel ikan menggunakan metode penarikan secara acak berlapis.  Jumlah sampel sebanyak 200 ekor, diambil empat kali dalam dua bulan. Berdasarkan uji Chi-square, rasio kelamin ikan Selarkuning (Selaroides leptolepis) di perairan Teluk Manado adalah seimbang. Pola pertumbuhan ikan Selarkuning yaitu bersifat allometrik positif, sedangkan betina bersifat isometrik dengan rata-rata faktor kondisi ikan jantan dan betina mencapai 0,9 dan 1,3. Musim pemijahan ikan Selarkuning di perairan Teluk Manado berlangsung setelah minggu keempat pada bulan April. Ukuran pertama kali matang gonad ikan Selarkuning jantan dan betina 189 mm. Fekunditas ikan Selarkuning berkisar antara 1.960 – 29.145 butir dengan rata-rata 11.716 ± 6.088.Kata kunci: ikan Selarkuning,biologi reproduksi, Teluk Manado
Size and Ambundance of glass eel Anguilla spp in mouth of Poigar River Kristanto R. Lumi; Victor N. R. Watung; Nego E. Bataragoa
Jurnal Ilmiah PLATAX Vol. 7 No. 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.22767

Abstract

The  aims of this study are determine the composition of the length and abundance of glass eel Anguilla spp that migrates at the mouth of the Poigar River. Sampling is done every month for four months in the new moon phase. Sampling site on one side of the Poigar River estuary, by making a 10 meter track in the direction of the river flow. The fishing gear used is a triangle-shaped handy scoop net with a length of 100 cm and a width of 75 cm. The catch of Glass eel eel for four months (from April to July 2018) as many as 3,551 individuals. Average length (± SD) in April was 44.4 ± 1.4 cm, May 48.7 ± 1.6 cm, June 51.1 ± 2.0 cm and July 51.1 ± 2.4 cm. The highest number of catches in May was 1,841 individuals, followed by June 785, July 860 individuals and April as many as 55 individuals. The average density of eels in April, Mai, June and July 2018 migrating in the sampling area of 10 x 0.7 meters is 1,160 individuals.Keywords: glass eel, size, abundance, Poigar River.ABSTRAKPenelitian ini bertujuan untuk mengetahui komposisi ukuran panjang dan kelimpahan  ‘‘glass eel’’ sidat Anguilla spp yang bermigrasi di muara Sungai Poigar.  Pengambilan sampel dilakukan setiap bulan selama empat bulan pada  fase  bulan baru. Tempat sampling  pada  satu sisi muara Sungai Poigar, dengan membuat lintasan sepanjang 10 meter searah aliran sungai. Alat tangkap yang digunakan adalah seser (handy scoop net) berbentuk segitiga dengan panjang 100 cm dan lebar 75 cm. Hasil tangkapan Glass eel sidat selama empat bulan (dari bulan April sampai Juli 2018) sebanyak 3.551 individu.  Rata-rata  panjang (± SD) pada bulan April 44,4±1,4 cm, Mei 48,7±1,6 cm, Juni 51,1±2,0 cm dan Juli 51,1±2,4 cm.  Jumlah tangkapan terbanyak pada bulan Mei 1.841 individu, diikuti bulan Juni 785, bulan Juli 860 individu dan bulan April sebanyak 55 individu.  Rata-rata kepadatan sidat pada bulan April, Mai, Juni dan Juli 2018 yang bermigrasi dalam wilayah sampling 10 x 0,7 meter adalah 1.160 individu.Kata kunci: glass eel, ukuran, kelimpahan, Sungai Poigar.

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