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JURNAL PERIKANAN DAN KELAUTAN TROPIS

JPKT
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Published by Universitas Sam Ratulangi

ISSN : 2302609X EISSN : 23026081 DOI : https://doi.org/10.35800/jpkt

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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ANALISIS SPASIAL PERUBAHAN GARIS PANTAI DI PESISIR KABUPATEN SUBANG, JAWA BARAT Taofiqurohman, Ankiq; Ismail, Mochamad Furqon Azis
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 3 (2012)
Publisher : Sam Ratulangi University

Pengamatan mengenai perubahan garis pantai di pesisir Kabupaten Subang, Jawa Barat telah dilakukan dengan menggunakan program Digital Shoreline Analysis System berdasarkan citra satelit Landsat TM dari tahun 1996â€“2010. Tujuan dari penelitian ini adalah untuk mengetahui besar perubahan garis pantai di Kabupaten Subang serta zonasi kawasan yang mengalami perubahan garis pantai tersebut. Metode yang digunakan adalah pemprosesan citra dan survey lapangan. Hasil dari penelitian ini menunjukkan bahwa dari tahun 1996â€“2010 perairan pesisir Kabupaten Subang mengalami perubahan garis pantai oleh adanya akresi dan abrasi yang maksimalnya sejauh lebih dari 1 km. Hasil analisis regresi antara perubahan waktu dengan akresi serta abrasi memberikan nilai positif. Secara keseluruhan, lebih dari 50% panjang pesisir Kabupaten Subang dikategorikan dalam kerusakan yang parah. Perubahan garis pantai di Pesisir Kabupaten Subang terjadi terutama karena kegiatan pembangunan di sekitar pesisir seperti pembukaan lahan mangrove menjadi tambak dan sawah, pembangunan pemukiman, serta transpor sedimen dari sungai-sungai di kawasan pesisir Kabupaten Subang. Kata kunci: perubahan garis pantai, Kabupaten Subang, citra satelit, akresi, abrasi. Â Observation of coastal shoreline changes in the Subang District was conducted using Digital Shoreline Analysis System Program based on the satellite images of Landsat TM from 1996 to 2010. The purpose of this study was to determine the distance of shoreline change and the zoning area in the Coastal of Subang District. Methods used in this study were images processing and field survey. The results of the study indicated the presence of shoreline changes which experienced maximum accretion and abrasion of more than 1 km between 1996 to 2010. The results of regression analysis between time and accretion as well as time and abrasion showed positive correlation. More than 50% the coastal area of Kabupaten Subang was in severely damaged conÂdition. Coastal shoreline change in Kabupaten Subang occurred mainly due to the developmental activities such as residential construction, coastal mangrove conversion to ponds and rice paddies and sediment transport from the river around Kabupaten Subang. Keywords: shoreline change, Subang District, satellite images, accretion, abrasion.

Gastropod Density and Diversity in the Intertidal Zone of Malalayang Beach, Manado Sheyrel Tongkeles; Fransine B. Manginsela; Jety K. Rangan; Alex D. Kambey
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol. 10 No. 3 (2021)
Publisher : Sam Ratulangi University

This study held in Malalayang Beach Manado, aims to determineÂ the density and diversity of Gastropods on the Malalayang coast of Manado. So the research objective is to find out the density and diversity ofÂ Gastropods in Malalayang Beach, Manado. The study using the line transect technique with 50 cm x 50 cm sized. The transect line is placed perpendicular to the coastline. The distance between the line transects is 20 meters. On each transect line 5 squares are placed. The distance between squares is determined using random numbers. Gastropod species found in Malalayang Beach Manado consist ofÂ 31 species and 17 genus, each consisting of the Archaeogastropoda that consists of 3 species, Mesogastropoda consists ofÂ 9 species, and the Order of the Neogastropoda of 19 species. The total density of Gastropods in Malalayang Beach in Manado is 6.27 individuals / m2 with diversity of 3.07, according to the criteria for diversity index of Malalayang coast having high diversity. Based on this, it is suggested that Manado Malalayang Beach can be maintained and carried out management that considers the feasibility of the environment as one of the requirements for sustainable development.Keywords: Gastropods, Density, Species DiversityABSTRAKÂ Penelitian ini dilakukan di Pantai Malalayang Manado,berkaitan dengan permasalahan yang dikemukakan bagaimanakah kepadatan dan keanekaragaman Gastropoda di pantai Malalayang Manado. Maka tujuan penelitian adalah Mengetahui kepadatan dan keanekaragaman Gastropoda di Pantai Malalayang Manado. Pengumpulan data dengan pendekatan Teknik line transect menggunakan kuadrat berukuran 50cm x 50cm. Line transect diletakkan tegak lurus dengan garis pantai. Jarak antara line transect sebesar 20 meter. Pada masing- masing line transect diletakkan 5 kuadrat. Jarak antar kuadrat ditentukan dengan menggunakan angka acak. Spesies Gastropoda yang ditemukan di Pantai Malalayang Manado terdiri dari 31 spesies dan 17 genera yang masing-masing terdiri dari Ordo Archaeogastropoda 3 spesies, Ordo Mesogastropoda 9 spesies, dan Ordo Neogastropoda 19 spesies. Kepadatan total Gastropoda di Pantai Malalayang Manado 6.27 individu/m2 dengan keanekaragaman 3,07, Menurut kriteria indeks keanekaragaman pantai Malalayang memiliki keanekaragaman yang tinggi. Berdasarkan hal tersebut, maka disarankan agar Pantai Malalayang Manado dapat dijaga dan dilakukan pengelolaan yang mempertimbangkan sskelayakan lingkungan sebagai salah satu syarat pembangunan berkelanjutan.Kata kunci: Gastropoda, Kepadatan, Keanekaragaman Jenis

MEMAKSIMALKAN POTENSI DORMANSI PADA ROTIFER Brachionus rotundiformius MELALUI MATING EKSPERIMEN Warouw, Veibe
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 1 (2010)
Publisher : Sam Ratulangi University

The rotifer Brachionus sp is widely used in aquaculture as a live prey, but problem remain with less utilization.Â It is often difficult to synchronize rotifer production with larvae demand.Â Rotifer also produce resting egg with sexual reproduction, this resting egg is thick-walled encysted stages which can remain dorman for extended period.Â Used resting egg as a stock can be solved the problem.Â With mating eksperiment we found resting egg produced by female rotifer that have not produce egg before. Â Suggestion proportion of male and female to produce resting egg is 4 male : 10 female.

STRATEGI PENGEMBANGAN BUDIDAYA RUMPUT LAUT DI PULAU NAIN KABUPATEN MINAHASA UTARA Pandelaki, Loura
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 2 (2012)
Publisher : Sam Ratulangi University

Pengembangan rumput laut di Pulau Nain membutuhkan strategi untuk meningkatkan kembali produksinya. Penelitian ini bertujuan untuk menentukan strategi-strategi dalam pengembangan budidaya rumput laut. Penyusunan strategi menggunakan analisis strategi pengembangan yang terdiri atas: analisis lingkungan, SWOT dan QSPM. Tiga prioritas strategi yang direkomendasikan untuk pengembangan budidaya rumput laut yakni: Mengefektifkan peran DKP dan lembaga terkait dalam pembinaan dan pengembangan SDM; peningkatan sumber permodalan usaha; danÂ pengadaan pola kerjasama kemiÂtraan pasar. Kata kunci: strategi pengembangan, rumput laut, produksi, SWOT, QSPM, analisis lingkungan. Â The development of seaweed cultivation in the Nain Island requires appropriate strategies to re-enhance its production. The objectives of this study is to determine strategies in developing the seaweed cultivation. Development strategy analysis was used as steps to determine strategy for the development of the seaweed cultivation. Analysis of the development strategy consists of: environmental analysis, SWOT analysis and QSPM. The three priority strategies for development of seaweed cultivation are as follows: Maximizing the role of DKP and related institutions in coaching and developing human resource; increasing the venture capital sources; dan procurement of market partnership patterns. Keywords: development strategy, seaweed, production, SWOT, QSPM, environmental analysis.

Gastropods In Mangrove Forest Of Tongkeina Village, Bunaken Sub-District, City Of Manado Dewanti Y Talumingan; Ferdinand F. Tilaar; Jety K. Rangan; Maartinus Baroleh; Victor N. R. Watung; Agung B. Windarto
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol. 10 No. 1 (2021)
Publisher : Sam Ratulangi University

This research aims to determine the types or species of gastropod and its distribution in mangrove forests in Tongkeina village and to know the species of mangrove in Tongkeina village. The Research was conducted on one sampling point with one 100 meters long line transect which was is laid perpendicular to the outer direction of the mangrove.Â To collect gastropod samples, three quadrates with a size of 10x10meters with a distance between the quadrate 5 meters were made. In the quadrate, 15 subquadrates sized 1x1meters were also made. Based on the results, there were 6 species of gastropods and two distribution patterns of i.e., Cluster the species of the Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. The uniform distribution pattern is Ischinocerithium rostratum, Caliostoma jujubinum, and Nerita senegalensis. There are ten mangrove species found andÂ the most common species is Soneratia alba with a total of 27 individuals.Keywords: Gastropods, forest, Mangrove, Tongkeina villageÂ ABSTRAKPenelitian ini bertujuan untuk mengetahui Jenis-jenis gastropoda serta persebaran pada hutan mangrove di Kelurahan Tongkeina dan untuk mengetahui Jenis-jenis mangrove di Kelurahan Tongkeina. Penelitian hanya di lakukan satu titik pengambilan sampel dimana dibuat 1 line transek dengan Panjang 100meter yang di tarik tegak lurus dari arah terluar mangrove kemudian dibuat 3 kuadrat dengan ukuran 10x10meter dengan jarak antara kuadrat 5 meter, dan di dalam kuadrat dibuat 15 subkuadrat berukuran 1x1 meter. Berdasarkan penelitian hasil ditemukan ada 6 spesies gastopoda dan dua pola persebaran Gastropoda yaitu mengelompok dan seragam, spesies mengelompok yaitu Littoraria scabra, Angustassiminea castanea, Terebralia sulcate. Pola persebaran seragam yaitu Ischinocerithium rostratum, Caliostoma jujubinum, Nerita senegalensis. Mangrove ditemukan 10 Spesies yang terbanyak adalah Soneratia alba dengan jumlah 27 individu.Kata kunci: Gastropoda, Hutan, Mangrove, Kelurahan Tongkeina.

KARAKTERISTIK TIPE DASAR DAN PEMANFAATAN PERAIRAN DI SEKITAR PULAU GANGGA, KABUPATEN MINUT Patty, Wilhelmina
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 2 (2010)
Publisher : Sam Ratulangi University

Coastal resources and space in the coastal around Gangga island, has been used for fishing activities and marine tourism. The purpose of this study to map the profile of bottom waters and to identify patterns sublitoral basic surface waters. The survey was conducted by using the acoustic method of sounding, followed by sediment sampling as well as shooting on the surface of the bottom waters. The result of observation indicates that the basic conditions of slope waters around the island of Ganga slope varies from flat to very steep slopes. Waters of the western Gangga island smaller flat slope found in coastal landform ranging from mangroves, coral reefs and seagrass. Bottom waters to the east of Gangga island to steep slope, with the basic pattern dominated by coral reefs and sand.

COMMON GARDEN OF SEAGRASSES Halodule uninervis (ForsskÃ¥l) Aschershon AND Halodule pinifolia (Miki) den Hartog Wagey, Billy Theodorus
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 2 (2012)
Publisher : Sam Ratulangi University

A simple culture system â€˜common gardenâ€™ has been set up in Institute of Environmental and Marine Science (IEMS) Dumaguete City Philippines (N 09Â° 19' 52.8" and E 123Â° 18' 34.1") at the running seawater outdoor experiment tank aimed to monitor the variation of shoot density, leaf morphology and growth rates of marine plant genus Halodule. Â The mean shoot densities of Halodule pinifolia were varied and tend to decrease after the three month period of common garden. Â Â Using one-way ANOVA tests, significant differences were detected on the comparison among the months of common garden (F=6.400; p=0.005), mean leaf growth rate (mm/day) of H. pinifolia (F=13.510; p=0.000), and the mean leaf widths from Siquijor (F=9.274; p=0.001) among the three month period of common garden.Â Meanwhile, there were no significant differences detected on leaf width (mm) of H. pinifolia origin from Bantayan site, on mean leaf widths of H. uninervis from Bantayan, on mean leaf widths of H. uninervis from Banilad, and on mean leaf growth rate (mm) of H. uninervis among the three month period of common garden.Â The result suggests that the â€˜common gardenâ€™ procedure could have possibly given a clearer pattern of genus Halodule leaf width, shoot density, and growth rate if the could be prolonged. Â It could also be suggested that an adequate number of shoot density on the initial procedure for â€˜common gardenâ€™ should be properly determined. Â This is to avoid overcrowding of the samples later, when growth rate will tend to increase without compromising the leaf width and shoot density measurements. Keywords: common garden, seagrasses, shoot density, leaf width, growth rate, Halodule pinifolia, Halodule uninervis. Â Sistem kultur Common Garden sederhana telah dibangun di Institute of Environmental and Marine Science (IEMS) Dumaguete City Philippines (09Â° 19' 52,8" LU dan 123Â° 18' 34,1" BT) dalam tangki penelitian di luar ruangan untuk memantau variasi kepadatan tunas, morfologi daun dan laju pertumbuhan rumput laut genus Halodule. Â Kepadatan tunas rata-rata Halodule pinifolia bervariasi dan cenderung menurun setelah periode tiga bulan. Menggunakan uji ANOVA satu arah, perbedaan nyata terdeteksi pada pembandingan bulan (F = 6.400, p = 0,005), rata-rata laju pertumbuhan daun (mm/hari) H. pinifolia (F = 13,510, p = 0,000), dan rata-rata lebar daun dari Siquijor (F = 9,274, p = 0,001) antara ketiga bulan common garden. Â Sementara itu, tidak ada perbedaan nyata yang terdeteksi pada lebar daun (mm) H. pinifolia asal Bantayan, pada lebar daun rata-rata H. uninervis dari Bantayan, pada lebar daun rata-rata H. uninervis dari Banilad, dan laju pertumbuhan daun rata-rata (mm) dari H. uninervis dalam periode tiga bulan dari common garden. Hasil ini menunjukkan bahwa prosedur 'common garden' mungkin bisa memberikan pola yang lebih jelas tentang lebar daun, kepadatan tunas, dan laju pertumbuhan genus Halodule jika waktu bisa diperlama. Juga dapat disarankan bahwa kepadatan tunas pada prosedur awal common garden harus ditentukan dengan baik untuk menghindari kesesakan sampel di kemudian hari, karena laju pertumbuhan cenderung meningkat sehingga ukuran lebar daun dan kepadatan tunas tidak terpengaruhi. Kata kunci: common garden, lamun, kepadatan tunas, lebar daun, laju pertumbuhan, Halodule pinifolia, Halodule uninervis.

SEBARAN SUHU DAN SALINITAS DI TELUK MANADO Kalangi, Patrice NI; Mandagi, Anselun; Masengi, Kawilarang WA; Luasunaung, Alfret; Pangalila, Fransisco PT; Iwata, Masamitsu
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 2 (2013)
Publisher : Sam Ratulangi University

Penelitian ini bertujuan untuk mendeskripsikan sebaran suhu dan salinitas di Teluk Manado, Sulawesi Utara. Pengukuran suhu dan salinitas secara vertikal dilakukan di delapan tempat di teluk. Profil vertikal suhu dan salinitas memperlihatkan keberadaan pelapisan kolom air. Secara horizontal, kontur suhu dan salinitas di permukaan memiliki dua â€œkolamâ€ massa air, yakni kolam yang bersuhu tinggi tapi bersalinitas rendah di bagian timur teluk dan kolam yang bersuhu rendah tapi bersalinitas tinggi di bagian barat teluk. Pada lapisan dalam, kontur suhu dan salinitas cenderung sejajar dengan garis pantai bagian timur. Kata kunci: suhu, salinitas, air sungai, Teluk Manado. Â The objective of this research is to describe temperature and salinity distribution in Manado Bay, North Sulawesi. Â The vertical measurements of temperature and salinity were done at eight locations in the bay. Â The vertical profiles of temperature and salinity shows the existence of water column stratification. Â Horizontally, temperature and salinity contours of the surface layer have two pools, i.e. a pool of high temperature but low salinity in the eastern part of the bay and a pool of low temperature but high salinity in the western part of bay. Â In a deeper layer, the contours of temperature and salinity tend to be parallel to eastern coastline. Keywords: temperature, salinity, river discharge, Manado Bay.

AKTIVITAS ANTIBAKTERI DARI EKSTRAK KASAR BAKTERI YANG BERASOSIASI DENGAN SPONGE Acanthostrongylophora sp. Ginting, Elvy L; Warouw, Veibe; Suleman, Rizal W
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 3 (2010)
Publisher : Sam Ratulangi University

Sponges have a potential to produce bioactive compounds. Their ability to do it since there is a symbiotic relationship with microorganisms in these bacteria. Because of this critical role, the bacteria symbiotic with sponge allegedly have great potential in terms of producing bioactive compounds that have been isolated from sponges (Lee, et al, 2001). In this study, using bacterial culture preparations isolated from the sponge, Acanthostrongylophora sp., the bacterial isolates were tested for their antibacterial activities using a well diffusion test. Based on the antibacterial activity test, the bacterial isolates known as BPO (shaped wavy white dots) and BPB (white threadlike have a certain type of thread) had antibacterial activity. ODS had a broad spectrum as potent against all three types of tested bacteria (Vibrio cholerae, Staphyloccocus aureus, Bacillus subtillis).

DISTRIBUSI KARANG DAN IKAN KARANG DI KAWASAN REEF BALL TELUK BUYAT KABUPATEN MINAHASA TENGGARA Manembu, Indri; Adrianto, Luky; Bengen, Dietriech G; Yulianda, Ferdinan
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 8, No 1 (2012)
Publisher : Sam Ratulangi University

PenempatanÂ reef ball di perairan Teluk Buyat dan sekitarnya telah dilakukan pada tahun 1999 oleh PT. Newmont Minahasa Raya. Tujuan penempatanÂ reef ball untuk membangun habitat berbagai biota yang berasosiasi dengan karang sehingga dapat meningkatkan populasi ikan ekonomis penting. Kehadiran ikan karang padaÂ reef ball sangat penting secara ekologis dan ekonomis. Penurunan kualitas terumbu berarti hilangnya nilai ekonomi barang dan jasa, serta hilangnya jaminan makanan dan pekerjaan untuk masyarakat pesisir, yang umumnya hidup dalam kemiskinan. Secara keseluruan, komposisi spesies ikan yang ditemukan diÂ reef ball terdiri dari 19 famili, 34 genus, 50 spesies dan 290 individu, yang tertinggi dihuni oleh jenis dari famili Mullidae. Seiring dengan bertambahnya waktu dan usiaÂ reef ball, beberapa spesies terlihat sudah menetap sepertiÂ Lutjanus kasmira, dan beberapa spesies dari famili Acanthuridae. KeberadaanÂ reef ball membantu terbentuknya ekosistem terumbu karang yang baru dan meningkatkan kesuburan perairan, sehingga lebih meningkatkan keberadaan komposisi ikan karang, yang pada akhirnya meningkatkan pendapatan nelayan dari hasil tangkapan ikan karang.Kata kunci:Â Reef ball, karang batu, ikan karangÂ Distribution of Coral Reefs and Fish in Buyat Bay Area Reef Ball Southeast Minahasa Regency The placement of reef ball in Buyat Bay and surrounding areas have been carried out since 1999 by PT. Newmont Minahasa Raya. The goal of this placement was to build a habitat for many biota associated with reef thus may improve economically important fish populations. The presence of reef fish on the reef ball is indispensable ecologically and economically. Furthermore, the degradation of reefs might cause the disappearance of economic value of goods and services, as well as the disappearance of food security and employment for coastal communities, who generally live in poverty. Overall, the composition of fish species found in the reef ball consists of 19 families, 34 genera, 50 species and 290 individuals, the highest inhabited by species of the family Mullidae. As time went by and the increase of reef ball age, some species seem have settled down such as Lutjanus kasmira, and several species of the Acanthuridae family. In addition, the presence of reef ball helps the formation of a new coral reef ecosystem and increase the fertility of waters, therefore enhancing the presence of reef fish composition, which might increases the income of fishermen. Keywords: Reef ball, coral reef, reef fish Â

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Location Kota manado, Sulawesi utara INDONESIA

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Alex Denny Kambey

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+6282196305145

Journal Mail Official
sdperairan@unsrat.ac.id

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Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi Manado Indonesia 95115

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Kota manado,

Sulawesi utara

INDONESIA