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JURNAL PERIKANAN DAN KELAUTAN TROPIS
Published by Universitas Sam Ratulangi
ISSN : 2302609X     EISSN : 23026081     DOI : https://doi.org/10.35800/jpkt
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management
Jurnal Perikanan dan Kelautan Tropis merupakan terbitan berkala ilmiah yang bertujuan menjadi sarana penyebarluasan hasil penelitian dan ilmu pengetahuan dalam bidang Perikanan dan Kelautan di daerah Tropis. Hasil penelitian akan diutamakan untuk diterbitkan. Namun demikian, redaksi juga menerima ulasan ilmiah berupa tinjauan teori, ulasan buku baru, komunikasi singkat dan karya ilmiah lainnya. Artikel bisa ditulis dalam bahasa Indonesia atau Inggris.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ecology, Evolution, Behavior and Systematics
Articles 137 Documents
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DAMPAK PROGRAM REKLAMASI BAGI EKONOMI RUMAH TANGGA NELAYAN DI KOTA MANADO Wagiu, Max
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 1 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.324 KB) | DOI: 10.35800/jpkt.7.1.2011.8

Abstract

This study focused on the economic and the social impacts of the reclamation program for the traditional fishermen who live along the coastal area of Manado City set the reclamation program, particularly Wenang Selatan, Titiwungen, and Bahu-Malalayang, using direct observation and guided interview techniques to selected respondent. The results found that in economic aspect, the local people gained higher income before reclamation than after it; in social aspect, the former fishermen had to alter their profession to the one they did not know or were sent outside the city, even far from social facilities, such as school, health services, etc.
NEMATOSIT DARI TIGA SPESIES KARANG SCLERACTINIA, GENUS POCILLOPORA Paruntu, Carolus; Rifai, Husen; Kusen, Janny D
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 2 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.305 KB) | DOI: 10.35800/jpkt.9.2.2013.4177

Abstract

Nematosit dari tiga spesies karang Scleractinia, yaitu Pocillopora eydouxi, Pocillopora woodjonesi dan Pocillopora verrucosa yang mendiami terumbu karang di kawasan Pantai Malalayang, Manado, Pro­vinsi Sulawesi Utara diteliti dalam penelitian ini. Dari 25 tipe nematosit utama yang dikenal dalam filum Cnidaria, dua tipe di antaranya dijumpai pada ketiga spesies ini. Dua tipe utama nematosit, yaitu holotrichous isorhizas (HI) dan microbasic p-mastigophores (MpM) teramati pada P. eydouxi dan P. woodjonesi, dan hanya satu tipe, yaitu microbasic p-mastigophore (MpM) diamati pada P. verrucosa. Komposisi nematosit pada P. eydouxi serupa dengan P. woodjonesi, tetapi sangat berbeda dari P. verrucosa. Ukuran HI adalah berbeda antara P. eydouxi dan P. woodjonesi, dan juga ukuran MpM berbeda antara P. verrucosa dan P. eydouxi atau P. woodjonesi. Hasil pengamatan menunjukkan bahwa komposisi dan dimensi nematosit cenderung bervariasi di antara ketiga spesies ini, walaupun berada dalam satu genus.   Perbedaan-perbedaan dalam nematosit ini diusulkan untuk dapat digunakan dalam klasifikasi karang. Kata kunci: Pocillopora eydouxi, Pocillopora woodjonesi, Pocillopora verrucosa, nematosit, holotrichous isorhizas (HI), microbasic p- mastigophore (MpM).   Nematocysts of three Scleractinian corals, i.e., Pocillopora eydouxi, Pocillopora woodjonesi and Pocillopora verrucosa occurring in the reef of the coastal area of Malalayang, Manado, North Sulawesi Province were studied. Of the 25 major types of nematocysts recognized in the phylum of Cnidaria, two types were encountered in these three corals. Two major types of holotrichous isorhizas (HI) and microbasic p-mastigophores (MpM) were observed in P. eydouxi and P. woodjonesi, and only one type of microbasic p-mastigophore (MpM) was observed in P. verrucosa. The nematocyst composition of P. eydouxi was similar to that of P. woodjonesi, but markedly different from that of P. verrucosa. The size of HI was different between P. eydouxi and P. woodjonesi, and also the size of MpM was different between P. verrucosa and P. eydouxi or P. woodjonesi. The present observation showed that nematocyst composition and dimension might be varied among these three corals. It is suggested that the differences in the nematocysts could be used in the classification of corals. Keywords: Pocillopora eydouxi, Pocillopora woodjonesi, Pocillopora verrucosa, nematocysts, holotrichous isorhizas (HI), microbasic p- mastigophore (MpM).
STABILITAS STATIS KAPAL IKAN TIPE LAMBUT TERSANJUNG YANG BERPANGKALAN DI PELABUHAN PERIKANAN SAMUDERA AERTEMBAGA KOTA BITUNG PROPINSI SULAWESI UTARA Pangalila, Fransisco PT
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 3 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.9 KB) | DOI: 10.35800/jpkt.6.3.2010.160

Abstract

Ship is water vehicle with any shape and any purpose, mechanically powered or by windvor tug and categorized as a multipurpose platform. It could be operated underwater or in the surface of water and could function merely as a floating static structure.  The natural condition is the fish catching area are unpredictable as the wave an current of the water could disturbing the maneuverability and the stabilty of the ship. For that purpose the fish catching ship should have and meet the criterion of robust construction and strong structure to deal with the extreme condition in the sea and also should have a good maneuverability and enough power to make it move steadily. The total lenght of the sample ship Tersanjung are 15.85 m, the width are 2.90 m and inside the ship measured as 1.32 m. The average comparison among the 3 parameters are 5.50 for L/B, 13.05 for L/D and 2.37 for B/D. The coefficient of the Tersanjung ship are Cb=0.58, Cp=0.96, C =0.60 and Cw=0.87.  “Tersanjung” ship has reverse velocity 3.7 second (1 perod). Maximum rolling reaching at 120 with righting moment of 0.21 m.
KUALITAS AIR PADA KOLAM LOBSTER AIR TAWAR (Cherax quadricarinatus) DI BBAT TATELU Tumembouw, Sipriana S.
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 3 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.803 KB) | DOI: 10.35800/jpkt.7.3.2011.190

Abstract

ABSTRACTThe study was done at the culture site and in the laboratory. The former covered water temperature and pH in the spawning, nursery and rearing ponds, in the morning, 06:00-07:00, at noon,12:00-13.00, and in the afternoon 17:00 to 18:00. Measurements were taken for 2 weeks. The latter included Dissolved Oxygen (DO), Ammonia, Nitrite, Carbon Dioxide (CO2) and turbidity. Water samples were analyzed in the Laboratory of Freshwater Aquaculture Center (BBAT) Tatelu, North Minahasa. Results showed that water temperature, pH, DO, CO2, turbidity, ammonia and nitrite were in the suitable range for the freshwater lobster culture, except that DO, CO2, turbidity, ammonia in the spawning and rearing ponds on March 14, 2011 were either lower or higher than the National Water Quality Standard for aquaculture.Keywords: Water Quality Parameter, Laboratory, Pond, Water Quality Standard.ABSTRAKPenelitian dilakukan di tempat budidaya lobster dan di laboratorium. Pengukur-an lapangan meliputi suhu air dan pH di kolam pemijahan, pendederan, dan pembesar-an, pada pagi hari (06:00-07:00), siang hari (12:00-13.00), dan sore hari (17:00-18:00). Pengukuran dilakukan selama dua minggu. Pengukuran laboratorium meliputi Oksigen terlarut (DO), Amonia, Nitrit, Karbondioksida (CO2) and kekeruhan. Sampel air dianali-sa di laboratorium Balai Budidaya Air Tawar, (BBAT) Tatelu, Minahasa Utara. Hasil menunjukkan bahwa suhu air, pH, DO, CO2, kekeruhan, amonia dan nitrit berada da-lam kisaran yang sesuai untuk budidaya lobster air tawar, kecuali bahwa DO, CO2, ke-keruhan, amonia di kolam pemijahan dan pembesaran pada 14 Maret 2011 berada le-bih rendah maupun lebih tinggi daripada standar bakumutu air nasional untuk budidaya.Kata kunci: Parameter kualitas air, laboratorium, air kolam, bakumutu.
MINUTE ROTIFER DARI PERAIRAN ESTUARI SULAWESI UTARA DAN POTENSINYA SEBAGAI PAKAN LARVA IKAN Lahope, Hety B; Wullur, Stenly; Rimper, Joice; Pangkey, Henneke; Rumengan, IFM
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 1 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.307 KB) | DOI: 10.35800/jpkt.9.1.2013.3446

Abstract

Penelitian ini bertujuan untuk mendapatkan minute rotifer (rotifer berukuran kecil) yang ada di perairan Sulawesi Utara yang memiliki potensi untuk dimanfaatkan sebagai pakan awal larva ikan laut. Sampling rotifer dilakukan di tujuh lokasi estuari yang berbeda dengan menggunakan plankton net (mata jaring 40 mm). Prosedur identifikasi rotifer didasarkan pada tampakan morfologi. Morfometri dilakukan di bawah mikroskop pembesaran 40-100x yang terhubung dengan sebuah komputer untuk visualisasi dan pengukuran. Tiga spesies minute rotifer berhasil diisolasi dari tiga lokasi estuari berbeda. Colurella sp. diisolasi dari sebuah kolam payau (salinitas 25 ppt) yang dipenuhi sampah rumah tangga di Tumpaan Kabupaten Minahasa. Lecane sp. cf Lecane quadridentata (Lecane) diisolasi dari sebuah tambak payau (salinitas 17 ppt) di Meras Kota Manado dan Lecane sp. cf Lecane papuana di muara sebuah sungai kecil (salinitas <3 ppt) di Tateli Kabupaten Minahasa. Semua minute rotifer yang ditemukan ini berhasil didomestikasi dan menunjukkan adaptasi positif dalam pemeliharaan berbasis mikroalga. Colurella sp, Lecane sp. cf L. quadridentata dan Lecane sp. cf L. papuana memiliki ukuran panjang lorika (PL) masing-masing (97,10 ± 3,58 mm, 130,83 ± 12,06 mm dan 118,70 ± 5,46 mm) sedangkan lebar lorika (55,37 ± 2,04 mm, 91,95 ± 10,58 mm dan 101,28 ± 6,623 mm) yang secara signifikan lebih kecil dari B. rotundi­formis (PL 167,41 ± 9,10 mm dan LL 122,44 ± 7,29 mm) (p<0,05), sehingga berpotensi untuk dimanfaatkan seba­gai pakan awal larva ikan laut yang membutuhkan pakan berukuran lebih kecil. Kata kunci: minute rotifer, Lecane sp, Colurella sp, larva   This study aims to get minute rotifers (small rotifers) in the waters of North Sulawesi which has the potential to be used as starting food for marine fish larvae. The sampling for rotifers was conducted in seven different estuarine locations using plankton net (mesh size 40 mm). Rotifer identification proce­dure was based on morphological appearances. Morphometric observations were conducted under 40-100x magnification microscope connected to a computer for visualization and measurement. Three roti­fer species were able to be isolated from three different estuarine locations. Colurella sp. was isolated from a brackish pond (salinity of 25 ppt) which were filled with household garbage in Tumpaan, Mina­hasa regency. Lecane sp. cf Lecane quadridentata (Lecane) was isolated from a brackish pond (salinity of 17 ppt) in Meras-Manado and Lecane sp. cf Lecane papuana at the estuary of a small river (salinity <3 ppt) in Tateli, Minahasa regency. All minute rotifers were successfully domesticated and showed po­sitive adaptation in microalgae-based rearing. Colurella sp, Lecane sp. cf L. quadridentata and Lecane sp. cf L. papuana have lorica length (PL) of 97.10 ± 3.58 mm, 130.83 ± 12.06 mm, and 118.70 ± 5.46 mm, respectively, and lorica width (LL) of 55.37 mm ± 2.04, 91.95 ± 10.58 mm, and 101.28 ± 6.623 mm. They were significantly smaller than B. rotundiformis (PL of 167.41 ± 9.10 mm and LL 122.44 ± 7.29 mm) (p<0.05), which are commonly used in larva rearing. Thus these rotifers have potentials to be used as starting food for marine fish larvae that need a smaller size food. Keywords: Minute rotifer, Lecane sp, Colurella sp, larva
OSMOREGULASI PADA HEWAN AKUATIK Lantu, Sartje
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.021 KB) | DOI: 10.35800/jpkt.6.1.2010.117

Abstract

All aquatic organisms must deal with the problem of maintaining internal homeostasis, a constant internal chemical environment in which that organism's enzymes can operate efficiently.  As we saw earlier, this is largely a matter of osmoregulation, but other factors are involved also.  Many marine organisms can get by with minimal osmoregulation since the oceans, where the enzymes evolved, are already a good environment; other marine organisms maintain their body fluids at ionic concentrations different from the surrounding ocean and must actively regulate ions.  Freshwater also calls for active measures to maintain proper osmotic balance.
PERANAN NELAYAN TERHADAP REHABILITASI EKOSISTEM HUTAN BAKAU (MANGROVE) Pontoh, Otniel
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 2 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.258 KB) | DOI: 10.35800/jpkt.7.2.2011.181

Abstract

ABSTRACTMangrove forest ecosystem has an important role for the welfare of the fishermen, because the daily activities of fishing is always related to the mangrove ecosystem. Therefore, it is necessary to make an effort to restore degraded mangrove forest in order to return to their function for human welfare, especially fishermen, and support the development of coastal areas. The participation in rehabilitation and managing of mangrove ecosystem is the key to the success of mangrove conservation. The level of knowledge and the role of fishermen on the mangrove ecosystem rehabilitation will be discussed in this paper.ABSTRAKEkosistem hutan mangrove memiliki peran yang sangat penting bagi kehidupan nelayan, karena aktifitas sehari-hari nelayan selalu berhubungan langsung dengan ekosistem hutan bakau. Oleh karena itu, perlu dilakukan berbagai upaya untuk memulihkan kembali hutan bakau yang rusak agar dapat kembali memberikan fungsinya bagi kesejahteraan manusia khususnya nelayan dan mendukung pembangunan wilayah pe-sisir. Keikutsertaan nelayan dalam upaya rehabilitasi dan pengelolaan bakau dapat menjadi kunci keberhasilan pelestarian bakau. Tingkat pengetahuan dan respon nelayan terhadap rahabilitasi ekosistim hutan mangrove akan didiskusikan dibawah ini.
DETERMINASI MOLEKULER KOI HERPES VIRUS (KHV) YANG DIISOLASI DARI IKAN KOI (Cyprinus carpio koi) Saselah, Jetti Treslah; Tumbol, Reiny A; Manoppo, Henky
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 2 (2012)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.525 KB) | DOI: 10.35800/jpkt.8.2.2012.408

Abstract

Penelitian ini bertujuan untuk mendeterminasi keberadaan Koi Herpes Virus (KHV) pada ikan koi (Cyprinus carpio koi). Sampel ikan diambil dari Kabupaten Kepulauan Sangihe. Penelitian di lakukan di Laboratorium Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sam Ratulangi dengan menggunakan metode Polymerase Chain Reaction (PCR). Hasil pemeriksaan PCR terhadap sampel ikan koi mengindikasikan bahwa sampel ikan koi telah terinfeksi oleh virus KHV, yang ditandai dengan munculnya pita DNA pada hasil visualisasi elektroforesis agarosa. Hasil pemeriksaan pada morfologi ternyata sampel ikan yang digunakan menunjukkan gejala-gejala klinis terserang KHV seperti mata pucat, insang berwarna pucat serta produksi lendir yang berlebihan. Beberapa sampel lainnya walaupun secara morfologi belum menunjukan gejala-gejala klinis tetapi melalui pemeriksaan PCR telah terindikasikan terinfeksi KHV. Kata kunci: KHV, PCR, ikan koi   The purpose of this study was to determine the presence of Koi Herpes Virus (KHV) in Koi (Cyprinus carpio koi). Fish samples were taken from the Sangihe Archipelago Regency. Laboratory work conducted at the Laboratory of Biology Faculty of Mathematics and Natural Sciences University of Sam Ratulangi using Polymerase Chain Reaction (PCR) method. The samples indicated that the koi fish samples were infected with KHV. It is shown by the appearance of DNA bands on agarose electrophore­sis visualization. The morphological examination of the body indicated clinical symptoms of KHV infection, such as pale eyes, pale gills and excessive mucus production. Several other samples, although without clinical symptoms, have shown to be infected as indicated by PCR test. Keywords: KHV, PCR, Koi.
Coral Fish Community at Artificial Reef In front of Marine Field Station of Faculty of Fisheries and Marine Science UNSRAT in Kampung Ambong Likupang Village, at The District of North Minahasa Sanjaya Molongio; Ari B. Rondonuwu; Ruddy D. Moningkey
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol. 10 No. 1 (2021)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (490.219 KB) | DOI: 10.35800/jpkt.10.1.2019.25073

Abstract

The aim of this study was to looking for the number of species, individual number and coral fish community structure at Artificial Reef in Front Marine Field Station of Faculty of Fisheries and Marine Science UNSRAT in Kampung Ambong Likupang Village at The District of North Minahasa. This research was done at artificial structure consist of different materials i.e iron, concrete struckture and bamboo which were laid at aproximately 9 metres. 23 coral fish species consist of : 3 species of indicator fish, 3 species of herbivorous target fish, 9 species of carnivorous target fish and 8 species mayor fish. The highest number of species was found in May 2019 (21 species) while at the same time low in individual (291) was found. In March 2019, coral fish was found in fair category (17 species) while high number of individual (383) was found in April 2019 (16 species) and the number of individual (321) was found. Diversity of all species that found from March up to May 2019 was 2,373 (good category). The dominance indeks was found 0,132 and could be categorized  as lowKeywords : Artificial, Subtrat, coral reef, fish. ABSTRAKPenelitian ini dilakukan pada substrat buatan dengan bahan yang berbeda yaitu besi, beton dan bambu yang diletakkan pada kedalaman + 9 meter. Ditemukan 23 jenis ikan karang yang meliputi  3 jenis ikan indikator, 3 jenis ikan target herbivora, 9 jenis ikan target karnivora dan 8 jenis ikan mayor. Jenis ikan karang yang tinggi ditemukan pada bulan Mei 2019 yaitu 21 jenis sedangkan jumlah individu rendah 291 individu, pada bulan Maret 2019 ikan karang yang ditemukan tergolong sedang berjumlah 17 jenis sedangkan jumlah individu tinggi yaitu 383 individu dan pada bulan April ikan karang yang ditemukan berjumlah 16 jenis dengan jumlah individu 321. Indeks keanekaragaman (H’) dari keseluruhan jenis mulai dari bulan Maret hingga Mei 2019 yaitu 2,373 dan dikategorikan sedang, indeks dominansi (D) 0,132 dan diketegorikan rendah.Kata kunci: Artifisial, Subtrat, terumbu karang, ikan.
STUDI FITOPLANKTON DI DANAU TONDANO PROVINSI SULAWESI UTARA Manu, Gaspar; Baroleh, Martinus; Kambey, Alex D
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.156 KB) | DOI: 10.35800/jpkt.6.1.2010.108

Abstract

This research was conducted in Tondano Lake North Sulawesi for 3 month from June to August 2007.  The research was aimed to identify species abundance of phytoplankton.  Phytoplankton were collected by using a 40 μm  large plankton net.  Results showed that phytoplankton consisted of 32 genera.   It also indicated that the highest individual abundance was shown by Fragillaria (2903 individuals),  followed by Microspora (2349 individuals), Closterium ( 984 individuals), Zynema (803 individuals), Melosira (770 individuals), and Anabaena (693 individuals) respectively with monthly sampling the highest abundance was on August (4227 individuals), followed by June (3516 individuals), and July (3493 individuals).

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