JURNAL PERIKANAN DAN KELAUTAN TROPIS
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KESESUAIAN LAHAN BUDIDAYA LAUT DI PERAIRAN KABUPATEN BOLAANG MONGONDOW SELATAN, SULAWESI UTARA
No full textPenelitian dilakukan untuk mengkaji tingkat kesesuaian lahan budidaya laut, khususnya budidaya rumput laut dan budidaya ikan di Kurungan Jaring Apung (KJA) di perairan Kabupaten Bolaang Mongondow Selatan, Provinsi Sulawesi Utara. Penentuan stasiun pengambilan sampel dilakukan berdasarkan identifikasi adanya aktivitas budidaya rumput laut dan budidaya ikan pada KJA di lokasi tersebut. Lima stasiun pengamatan yakni lokasi budidaya rumput laut desa Matandoi, dan lokasi budidaya ikan dalam KJA di desa Deaga, Torosik, Matandoi dan Pinalantungan. Pada tiap stasiun ditentukan satu titik pengambilan sampel air untuk pengukuran parameter kualitas air, serta aspek fisik lain seperti kecepatan arus dan beda pasang-surut air laut. Parameter kualitas air seperti amoniak, pH, suhu, nitrit dan turbiditas diukur menggunakan Water Test Kit AYI-10 in ScienPro, sementara salinitas dan oksigen terlarut (DO) diukur menggunakan Water Tester Horiba. Data yang diperoleh ditabulasi dan ditampilkan dalam histogram. Untuk menentukan tingkat kesesuaian lahan, data dibandingkan dengan baku mutu persyaratan untuk lokasi budidaya rumput laut dan budidaya ikan di KJA. Hasil penelitian menunjukkan bahwa perairan desa Matandoi sesuai untuk lokasi budidaya rumput laut. Perairan desa Pinalantungan, desa Torosik, dan desa Matandoi sesuai untuk lokasi budidaya ikan di KJA, sedangkan perairan desa Deaga kurang sesuai untuk lokasi budidaya KJA. Kata kunci: kesesuaian lahan, budidaya, rumput laut, KJA, Bolaang Mongondow Selatan. Â This study was aimed to study the suitability level of waters in South Bolaang Mongondow Regency, North Sulawesi Province, for seaweed culture and fish culture in floating net cage (KJA). The stations for water sampling were appointed based on the occurrence of the seaweed culture and finfish culture in KJA in the area. Five stations were appointed, where one station representing seaweed culture area (Matandoi village waters), while four stations representing the floating net cage culture areas (Deaga, Torosik, Matandoi and Pinalantungan village waters). At each station, one point was appointed for sampling of waters for the measurement of water quality parameters and for assessment of other physical features of waters body such as, current velocity, wave height and tide level. The other water quality parameters such as, ammonia, pH, temperature, nitrite, and turbidity were measured using Water Test Kit AYI-10 in ScienPro, whereas dissolve oxygen (DO) and salinity were measured using Horiba Water Tester. The collected data were then tabulated and presented in histogram. To analyze the level of the suitability of the area for seaweed culture and floating net cage culture, the obtained data were compared to the standard water quality for the location of seaweed culture and floating net cage culture. The results show that, the territorial waters of Matandoi village is suitable for seaweed culture area. The territorial waters of Pinalantungan village, Torosik village and Matandoi village are suitable for floating net cage culture area, while territorial waters of Deaga village is less-suitable for floating net cage culture area. Keywords: area suitability, culture, seaweed, floating net cage, South Bolaang Mongondow
DAERAH PENANGKAPAN IKAN TUNA (Thunnus sp.) DI SANGIHE, SULAWESI UTARA
Get PDFPenelitian ini bertujuan memetakan dan menginventarisir hasil tangkapan pancing tangan di Perairan Sangihe pada sembilan lokasi penangkapan ikan. Penangkapan ikan tuna di Perairan Sangihe terutama dengan menggunakan pancing tangan (tuna handline) yang oleh nelayan lokal dinamakan latage. Sarana tangkap yang biasa digunakan adalah perahu katir tipe pelang 3–5 HP; perahu katir tipe pumpboat 150 HP; kapal tipe lambut 150 HP. Hasil tangkapan perahu pelang yaitu tuna sirip kuning 2 ekor; perahu pumpboat yaitu cakalang 100 ekor dan panitang 402 ekor; kapal lambut yaitu madidihang 102 ekor; tuna mata besar 2 ekor. Madidihang paling tinggi tertangkap pada posisi geografis 3º47'N–125º19'E (ponton Marcopolo 03), sedangkan cakalang paling tinggi tertangkap pada posisi geografis 3º39'N–125º12'E (ponton Kendahe). Kata Kunci: tuna, penangkapan ikan, pancing tangan, latage, posisi geografis This study aims to map and to inventory the hand fishing catches in the waters of the Sangihe at nine fishing locations. Tuna fishing in the waters of the Sangihe mainly uses handlines (tuna handline) which is called latage by local fisherman. Fishing vessels used to catch tuna were pelang type 3–5 HP outrigger boats, pumpboat type 150 HP outrigger boat and lambut type 150 HP boats. The fish catches by each boat types were 2 yellow fin tunas by the pelang boats; 100 skipjacks and 402 panitangs by the pumpboat boats; and 102 yellow fin tunas and 2 big eye tunas by lambut boats. Highest number of yellowfin tunas was caught in the geographical position of 3º47'N–125º19'E (Marcopolo 03 pontoon) and while the highest number of skipjacks was caught in the geographical position of 3º39'N–125º12'E (Kendahe pontoon). Keywords: tuna, fishing, handline, latage, geographical positio
NIRA LONTAR SEBAGAI KANDIDAT DALAM MEMPERTAHANKAN KANDUNGAN PROTEIN SILASE JEROAN IKAN CAKALANG
No full textJeroan ikan sebagai limbah dari pengelolaan ikan cakalang panggang di Kupang, Nusa Tenggara Timur dapat dimanfaatkan untuk membuat silase dengan menambahkan bahan nira lontar (Borassus flabellifer) yang telah mengalami fermentasi. Fermentasi dilakukan selama 0–15 hari dan pengujian terhadap total asam, pH, serta kadar protein kasar dilakukan secara teratur. Hasil yang diperoleh menunjukkan bahwa penambahan nira lontar yang telah difermentasi ke dalam jeroan ikan cakalang pada semua konsentrasi secara nyata memberiÂkan pengaruh terhadap pertumbuhan bakteri asam laktat dan menekan pertumbuhan bakteri pembusuk, hal ini erat kaitannya dengan kandungan asam (total asam) nira lontar yang berkontribusi terhadap penurunan pH bahan fermentasi. Produk silase jeroan ikan cakalang terbaik, ditinjau dari aspek kadar protein kasar, adalah pada perlakuan konsentrasi nira lontar 10% dengan lama fermentasi 24 jam yang memiliki kandungan protein sebesar 15,46% dari berat basah bahan fermentasi (silase). Kata kunci: Silase, jeroan ikan cakalang, nira lontar, fermentasi  The innards from fresh tuna fish grill in Kupang, Nusa Tenggara Timur can be used to make silage with addition of fermented sap of lontar palm (Borassus flabellifer). Fermentation was carried out for 0–15 days and regularly tested for total acid, pH, as well as the crude protein content. The results showed that the addition of palm sap that has been fermented into the innards of tuna at all concentrations significantly impact the growth of lactic acid bacteria and suppress the growth of spoilage bacteria, it is closely related to the acid content (total acid) that contribute to the palm sap decrease in pH of fermentation ingredients. Tuna offal silage products best viewed from the aspect of the content of crude protein in the treatment of palm sap concentration of 10% with a 24-hour fermentation time which has a protein content of 15.46% by weight of the wet ingredients fermentation (silage). Keywords: Silage, tuna offal, lontar palm sap, fermentatio
STUDI FITOPLANKTON DI DANAU TONDANO PROVINSI SULAWESI UTARA
Get PDFThis 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)
DISTRIBUSI KARANG DAN IKAN KARANG DI KAWASAN REEF BALL TELUK BUYAT KABUPATEN MINAHASA TENGGARA
No full textPenempatan reef ball di perairan Teluk Buyat dan sekitarnya telah dilakukan pada tahun 1999 oleh PT. Newmont Minahasa Raya. Tujuan penempatan reef ball untuk membangun habitat berbagai biota yang berasosiasi dengan karang sehingga dapat meningkatkan populasi ikan ekonomis penting. Kehadiran ikan karang pada 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 di 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 usia reef ball, beberapa spesies terlihat sudah menetap seperti Lutjanus kasmira, dan beberapa spesies dari famili Acanthuridae. Keberadaan 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: Reef ball, karang batu, ikan karang 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
KUALITAS AIR PADA LOKASI BUDIDAYA IKAN DI PERAIRAN DESA ERIS, DANAU TONDANO, KABUPATEN MINAHASA
No full textEris Society in the village of utilizing the waters of Lake Tondano as a place to fish cultivation in floating net system and step on floating net karamba system. Karamba unit developments and floating net cages in the area of ​​cultivation step on the less controllable negative impact on the aquatic environment such as pollution of water quality. For this study aims to measure the quality parameters including pH, temperature, brightness and analyzed water quality parameters including turbidity, dissolved oxygen, ammonia and phosphate so that the water quality conditions in the Village of Lake Tondano District Eris Eris known. From the results obtained by the temperature at a depth of 0.5 meters from surface water ranged from 25.3 to 28.3 º C, at a depth of 0.5 meters from the lake bottom ranged from 24.7 to 28 º C, the brightness ranges from 182-325 cm, turbidity ranges from 7 - 16 NTU, the pH at a depth of 0.5 meters from the water surface ranged from 6.89 to 8.09, at a depth of 0.5 meters from the lake bottom ranged from 6.93 to 8.03, dissolved oxygen ranged from 7.10 to 7.52 mg / L, ammonia ranging from 0.03 to 0.14 mg / L, and phosphate ranged from 0.02 to 0.12 mg / L. Temperature, brightness, pH, dissolved oxygen and phosphate at the sites are still in good condition that is still in accordance with the water quality standard. For turbidity and ammonia has passed the threshold water quality standard. This is presumably due to domestic wastewater effluent from surrounding communities, causing decomposition which affects the water quality conditions. However the waters in the village of Eris can be used for aquaculture. This is evidenced by the persistent cultivation of fish in the Village District Eris Eris
KOMUNITAS LAMUN DI PERAIRAN PESISIR PULAU YAMDENA, KABUPATEN MALUKU TENGGARA BARAT
Get PDFThis study was aimed at identifying the seagrass, and knowing the seagrass community structure in the coastal waters of Yamdena Island, West Southeast Maluku. This study was carried out from July to September 2007. The highest density was shown by C. rotundata in Olilit, T. hemprichii in Lauran and Kabiarat, and E. acoroides in Kabiarat and Watmasa. Furthermore, the highest abundance of seagrass occurred by C. rotundata in Olilit, H. pinifolia in Lauran, T. hemprichii in Kabiarat, and E. acoroides in Watsama. The highest occurrence was shown by C. rotundata in Olilit, E. acoroides in Lauran, T. hemprichii in Kabiarat and Lauran, and H. pinifolia dan H. ovalis in Watmasa.Keywords: Seagrass, community, Yamdena Island, West Southeast Maluk
PENGHAMBATAN OKSIDASI LIPIDA IKAN TUNA OLEH AIR JAHE SELAMA PENYIMPANAN DINGIN
No full textTujuan penelitian ini adalah untuk mengetahui efek suplementasi ekstrak air jahe pada oksidasi lipida daging ikan tuna yang disimpan selama 9 hari. Oksidasi lipida ikan tuna beku dievaluasi berdasarkan nilai bilangan peroksida dan pembentukan malonaldehyde (nilai TBA) pada hari ke 0, 3, 6 dan 9 penyimpanan. Hasil penelitian menunjukkan bahwa suplementasi ekstrak air jahe meningkatkan stabilitas ikan tuna beku terhadap oksidasi lipida dibandingkan dengan kontrol. Ekstrak air jahe 2% dan 3% lebih efektif dalam menghambat oksidasi lipida daging ikan tuna selama penyimpanan dibandingkan ekstrak air jahe 1%. Kata kunci: Tuna, ekstrak jahe, antioksidan, penyimpanan dingin, peroksida, malonaldehid.Inhibition of Tuna Lipid Oxidation by Ginger Extract during Refrigeration The effects of ginger extract supplementation on lipid oxidation of raw tuna during refrigerated storage for 9 days were examined. Lipid oxidation was assessed by monitoring peroxide and malonaldehyde formation in raw tuna at 0, 3, 6 and 9 days of refrigerated storage. Results showed that all ginger extracts treatments significantly increased the stability of frozen tuna to lipid oxidation compared with the control. Ginger extracts of 2% and 3% was more effective in inhibiting lipid oxidation of raw tuna than 1% extract. Keywords: Tuna, ginger extract, antioxidant, refrigerate storage, peroxide, malonaldehyde. Â
PROFIL SALINITAS DAN SUHU DI TELUK MANADO PADA HARI-HARI HUJAN DAN TIDAK HUJAN
No full textPengukuran salinitas dan suhu perairan dilakukan pada hari-hari hujan dan tidak hujan di dua tempat di perairan Teluk Manado, yang memiliki lima sungai utama di pinggirannya, untuk menyelidiki profil vertikal dari salinitas dan suhu, serta ketebalan air tawar. Profil salinitas dan suhu perairan pada hari yang sama di kedua tempat adalah mirip. Pada hari-hari hujan, salinitas rata-rata lapisan permukaan perairan adalah 33,9 lebih rendah 0,3 dibandingkan pada hari-hari tidak hujan. Salinitas permukaan ini setara dengan ketebalan lapisan air tawar sebesar 0,45 m. di lapisan permukaan, profil suhu cukup mirip. Akan tetapi, pada lapisan yang lebih dalam, suhu berosilasi pada fase yang berbeda dengan bertambahnya kedalaman. Kata kunci: ketebalan lapisan air tawar, termoklin, Bunaken. Â Salinity and temperature measurements were carried out on rainy days and non rainy days in two locations in Manado Bay, which is the outlet of fresh water masses from five main rivers, to investigate vertical profiles of salinity and temperature, and the thickness of the fresh water layer. Same day salinity and temperature profiles in both places is similar. On rainy days, the average salinity in the surface layer was 33.9, 0.3 lower than that of non rainy days. The surface salinity is equivalent to the thickness of the freshwater layer thickness of 0.45 m. In the surface layer, the temperature profile is quite similar. However, in the deeper layers, the temperature oscillates at different phases according to the increasing depths. Keywords: freshwater thickness, thermocline, Bunaken
ALTERNATIVE MANAGEMENT OF MARINE TOURISM AREAS AT BANDENGAN WATERS, JEPARA, CENTRAL JAVA
No full textBandengan waters have the potential to serve as a marine tourism area, its sustainability has to be preserved. Optimal utilization of Bandengan waters can provide benefits not only to the environment but also to the economic improvement of the community. Efforts to optimize marine tourism in Bandengan waters were conducted by reviewing area management alternatives to preserve and improve the welfare of the commuÂnity. This study aims to analyze the alternative management of the marine tourism area using A'WOT analysis which is a combined analysis of SWOT and AHP (Analytical Hierarchy Process) to establish strategies and to determine alternative management on marine tourism in Bandengan waters. Based on A'WOT analysis obtained alternatives to manage marine tourism area which consists of spatial planning based on biophysical parameters, spatial planning based on the carrying capacity of the environment, increasing public and tourist awareness to cleanliness, improving both the quantity and quality of infrastructure, and the making of legisÂlation. The recommended alternative management is basically aimed to preserve the marine tourism in Bandengan waters and to improve the people's welfare. Keywords: marine tourism, alternative management, SWOT, AHP  Perairan Bandengan memiliki potensi yang dapat dijadikan sebagai kawasan wisata bahari, sehingga perlu dijaga kelestariannya. Pemanfaatan perairan Bandengan secara optimal dapat memberikan manfaat tidak hanya terhadap lingkungan tetapi juga terhadap peningkatan ekonomi masyarakat. Upaya untuk mengÂoptimalkan wisata bahari di perairan Bandengan dilakukan pengkajian terhadap alternatif pengelolaan kaÂwasan menjaga kelestarian dan meningkatkan kesejahteraan masyarakat. Penelitian ini bertujuan untuk menganalisa alternatif pengelolaan kawasan wisata bahari dengan menggunakan analisa A’WOT yaitu gaÂbungan analisa SWOT dan PHA untuk menetapkan strategi dan menentukan alternatif pengelolaan kawasan wisata bahari di Perairan Bandengan. Berdasarkan analisa A’WOT diperoleh alternatif pengelolaan kawasan wisata bahari yang terdiri dari penataan ruang berdasarkan parameter biofisik, penataan ruang berdasarkan daya dukung lingkungan, peningkatan kesadaran masyarakat dan wisatawan terhadap kebersihan, peningkatan infrastruktur baik kuantitas maupun kualitas, serta pembuatan peraturan perundang-undangan. Alternatif pengelolaan yang dihasilkan pada dasarnya bertujuan untuk menjaga kelestarian kawasan wisata bahari di perairan Bandengan dan meningkatkan kesejahteraan masyarakat Bandengan. Kata kunci: wisata bahari, alternatif pengelolaan, SWOT, AH