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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences Buletin Udayana Mengabdi ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Perikanan Universitas Gadjah Mada Current Trends in Aquatic Science Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology)

Rani Ekawaty

Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan Dan Perikanan, Universitas Udayana

Author-ID : 3754655

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Other

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PERBANDINGAN HASIL TANGKAPAN DAN LAJU TANGKAP ARMADA PANCING ULUR YANG BERBASIS DI PPI OEBA, KUPANG (The Comparison of Catch And Catch Rate of Handline Fishing Vessel Based On PPI Oeba, Kupang) Rani Ekawaty; . Musyafak; Irwan Jatmiko
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 6 No. 2 (2015): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

ABSTRACTThe utilization of fishery resources in the Indian Ocean, especially in the southwest of Sumatra Island, south of Java, Bali to Nusa Tenggara is expected to increase. The objective of this study was to determine the composition of the catches and the catch rate of hand line based on PPI Oeba, Kupang. Research conducted at the Fish Landing (PPI) in Oeba, Kupang, Nusa Tenggara Timur from January to March 2015. The method used is descriptive method in which the research is intended to describe the phenomenon that occurred in the handline fishery and its catch. Catch data and fishing effort are analyzed to determine the value of the catch per unit of fishing effort. To determine differences in fishing fleet catches large and small pull-t test. About 60% catch of handline GT<10 dominated by tuna (Thunnus sp) and skipjack (Katsuwonus pelamis). While the GT>10 dominated by snapper (Lutjanus sp), anggoli (Pristipomoides multidens) and grouper (Epinephelus sp) with percentage of more than 70% of the total catch. There was a significant difference to the average catches between fleets with GT<10 and GT>10 (t = -9.538; df = 2404, p <0.001). The average catch of fishing fleet GT> 10 was 1,074 kg, or about twice that of the average catches of fishing fleets with GT <10 only amounted to 539 Kg. This information can be used as input in the management and development of hand line fishing in the PPI Oeba, Kupang.Keywords: catch composition, catch rate, fishing effort, t-test------ABSTRAKPemanfaatan sumberdaya ikan di Samudera Hindia terutama di sebelah barat daya Pulau Sumatera, selatan Pulau Jawa, Pulau Bali sampai Nusa Tenggara cenderung meningkat. Penelitian ini bertujuan untuk mengetahui komposisi hasil tangkapan dan laju tangkap pancing ulur yang berbasis di Pangkalan Pendaratan Ikan (PPI) Oeba, Kupang.Penelitian dilakukan di PPI Oeba, Kota Kupang, Nusa Tenggara Timur dari bulan Januari â€“ Maret 2015. Metode yang digunakan adalah metode deskriptif dimana penelitian ini ditujukan untuk menggambarkan fenomena yang terjadi pada perikanan pancing ulur dan hasil tangkapannya.Data hasil tangkapan dan upaya penangkapan yang dianalisis untuk menentukan nilai hasil tangkapan per satuan upaya penangkapan.Untuk mengetahui perbedaan hasil tangkapan armada pancing ulur besar dan kecil dilakukan uji-t.Sekitar 60% hasil tangkapan armada pancing ulur dengan GT<10 didominasi oleh tuna (Thunnus sp) dan cakalang (Katsuwonus pelamis). Adapun hasil tangkapan armada pancing ulur dengan GT>10 didominasi oleh kakap (Lutjanussp), anggoli (Pristipomoides multidens) dan kerapu (Epinephelus sp) dengan persentase ketiganya sebesar lebih dari 70%.Terdapat perbedaan yang nyata terhadap rata-rata hasil tangkapan antara armada GT<10 dengan GT>10 (t=-9,538; df=2404; p<0,001). Rata-rata hasil tangkapan armada pancing ulur dengan GT>10 sebesar 1.074 kg atau sekitar dua kali lipat dibandingkan rata-rata hasil tangkapan armada pancing ulur dengan GT<10 yang hanya sebesar 539 kg. Diharapkan informasi ini dapat dijadikan masukan dalam pengelolaan dan pengembangan perikanan pancing ulur di PPI Oeba, Kupang.Kata kunci: komposisi hasil tangkapan, laju tangkap, upaya penangkapan, uji-t

PENGARUH KARAKTERISTIK PASIR PANTAI TERHADAP PERSENTASE KEBERHASILAN PENETASAN TELUR PENYU LEKANG (Lepidochelys olivacea) DALAM UPAYA KONSERVASI PENYU DI BALI I Nyoman Yoga Parawangsa; I Wayan Arthana; Rani Ekawaty
Metamorfosa: Journal of Biological Sciences Vol 5 No 1 (2018)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2018.v05.i01.p06

Enam dari tujuh spesies penyu laut ditemukan di Indonesia dan tiga diantaranya melakukan proses peneluran di beberapa pantai di Bali, salah satunya adalah Penyu Lekang (Lepidochelys olivacea) yang masuk kedalam kategori terancam punah oleh IUCN. Penelitian ini bertujuan untuk mempelajari pengaruh perbedaan karaktertistik pasir pantai terhadap persentase penetasan telur Penyu Lekang pada media sarang semi alami. Keberhasilan penetasan pada sampel telur dilihat melalui variabel suhu pasir, suhu udara, kelembaban pasir, kelembaban udara, besar ukuran pasir, dan warna pasir. Persentase tertinggi dari keberhasilan penetasan sampel telur terjadi pada media penetasan pasir Pantai Pulau Serangan sebesar 97% dengan masa inkubasi 49 hari dan rentang suhu pasir berkisar antara 27,50o C, sampai 30,40o C. Sedangkan media pasir Pantai Saba dan Pantai Perancak memiliki persentase keberhasilan penetasan 87% dan 67% dengan masa inkubasi 46 hari. Perbedaan masa inkubasi tersebut dipengaruhi oleh variabel suhu pasir. Sementara perbedaan persentase keberhasilan penetasan dipengaruhi oleh perbedaan karakteristik pasir pada media penetasan. Dengan meningkatkan persentase keberhasilan penetasan yang tinggi, maka akan diperoleh tukik hidup yang lebih banyak untuk pemulihan populasi penyu dalam upaya untuk mendukung kegiatan konservasi penyu.

Status Tropik dan Struktur Komunitas Fitoplankton di Danau Beratan, Desa Candikuning, Kecamatan Baturiti, Kabupaten Tabanan, Provinsi Bali Yuli Ananda; I Wayan Restu; Rani Ekawaty
Metamorfosa: Journal of Biological Sciences Vol 6 No 1 (2019)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2019.v06.i01.p10

Beratan Lake is located in Bedugul, Candikuning Village, Baturiti Subdistrict, Tabanan District, Bali Province. Beratan Lake is a caldera lake with a surface area of 438 hectares, 1,340 hectares of water catchment areas, a length of 2 km and 2 km wide and 49.22 million m3 of water volume. This research was conducted in January until February 2016. The aims of this study are to phytoplankton community structure.The composition of phytoplankton were found during this study dominated by the phylum of Chlorophyta and species were often found with high abundance is Staurastrum tetracerum. Average abundance in the waters of Lake Beratan is in the range 2054-2502 ind/l which shows that the waters of Lake Beratan with moderate fertility (mesotrophic). The value of species diversity (H ') has ranges from 2,34 - 2,55. The range uniformity index values has from 0.76 - 0.83. Value index of phytoplankton dominance has range of 0,1- 0,16 dominance relatively low indicated the absence of certain species dominance.

Inventarisasi dan Komposisi Jenis Ektoparasit Ikan Nila (Oreochromis niloticus) Sebagai Biomonitoring Perairan Sungai Tukad Badung, Bali Alfi Hermawati Waskita Sari; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Environmental stressors which coming from anthropogenic wastes that indirectly enters into the river waters also affect the biota's health in the ecosystem such as the Tilapia Fish (Oreochromis niloticus) which is found in the waters of the Tukad Badung River, Bali. The presence of parasites in fish is also associated with changes of the water quality. The objectives of this study is to provide data and information on the inventory and composition of the parasite species in Tilapia fish (Oreochromis niloticus) as the aquatic health biomonitoring of in the effort of sustainable river ecosystem management. The results of ectoparasit observation of the Tilapia which obtained from five stations in Tukad Badung waters found 6 types of ectoparasites, which are Trichodina sp. Dactylogyrus sp. Gyrodactylus sp., Chilodonella sp., Vorticella sp. and Lernea sp. The composition of the ectoparasite species of nila tilapia fish (Oreochromis niloticus) obtained from all five research stations in Tukad Badung waters by percentage of presence of ectoparasite Trichodina sp. are 70%, Dactylogyrus sp. 31%, Gyrodactylus sp. 4% and Chilodonella sp., Vorticella sp. and Lernea sp. 1%.

Growth Pattern of Skipjack Tuna (Katsuwonus Pelamis) Landed in PPI Kedonganan Bali I Gusti Ayu Febiana Putri Wardeni; Pande Gde Sasmita Julyantoro; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Skipjack Tuna (Katsuwonus Pelamis) is one of the big pelagic fish in fishery resources that has high economic value and plays an important role in export activity in Indonesia. Catch activities for consumption needs for people could threatened of Skipjack Tuna availability. The growth pattern of Skipjack Tuna is needed to used as references for the appropriate management plan to protect Skipjack Tuna. The research was conducted from February to April 2017 at PPI Kedonganan, Kuta District, Badung, Bali. The fish were collected by simple random sampling method. This study showed that gillnet and handline were used as fishing gears. The length frequency distributions were in the long-range of 315-337 mm means the catch fish is still young. The growth pattern of Skipjack Tuna was negative allometric means length growth was faster than weight growth. The growth parameters of Skipjack Tuna were obtained by the asymptotic length (Linf) of 875.2 mm, growth coefficient (K) of 0.09, and theoretical age (t0) of -0.78. Skipjack Tuna have small body size with condition factors were ranged from 0.8783-1.7269. It can be concluded that these methods can be used to determine the appropriate management efforts.

Inventarisasi Ikan Ekonomis Penting pada Musim Barat di PPI Kedonganan, Bali Mahfud Samdani; I Wayan Restu; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 7 No 1 (2021)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2021.v07.i01.p02

The study of economically important fish which is landed at Fishing Landing Base (PPI) Kedonganan District Kuta Selatan Badung Regency was held on 1 Februri s.d 31 March 2017 (west season). Objective is to inventory list of types of fish economically important which is landed in PPI Kedonganan Badung regency. The research was conducted using direct survey method with purposive sampling technique of fish landed PPI Kedonganan, the data were analyzed using descriptive analysis. The identification process was carried out by using identification keys from Saanin (1984) volumes I and II, and an important economic fish identification book from Peristiwady (2006). Based on the results of the study, there were 16 important types of important fish landed in PPI Kedonganan in the west season, which entered in the classification of 4 orders (perciformes, apodes, clupeiformes, and beloniformes), and 9 families consisting of 16 Species. Of the 4 orders, the most frequencies and volumes found were the perciformes with the tuna fish species, the sardines (Sardinella fimbriate), and the kawa-kawa (Euthynnus afinis). The least-discovered species are baronang (Siganus guttatus), flying fish (Cheilopogon sp) in the order of beloniformes, and kembung fish (Restrelliger sp). Comparison of production data in the west season with fish landing production data in PPI Kedonganan in other seasons, that types of fish are found relatively few species and the volume is lower. This means that the west season gives effect to the catch of fish that was declared in PPI Kedonganan.

Pengaruh Kepadatan Bagan Dan Kedalaman Perairan Terhadap Produktivitas Hasil Tangkap Bagan Tancap Di Teluk Pang Pang, Banyuwangi, Jawa Timur Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

During 1998-2003 fisheries production tends to decrease for Muncar, Banyuwangi, East Java. Growing number of fishing gears (especially the set fishing gear like the bambbo platform lift net) in the Pang Pang bay even though its presence is not allowed, this is might be the caused of the decreased fisheries production. As for the bamboo platform lift net itself has many factors that affect the catch effort productivity. Some of them were examined in this study which are the density (unit/ha), water depth (m) and time of hauling (min). From this study, we expected to know how far the influence of each factors as well as the mathematical models of it. This study results shows that the density of the bamboo platform lift net greatly affect the fishing gear productivity, that the higher the density number will lead to further decline in the fishing gear productivity. The water depth also has an effect, in which the deeper the waters of the fishing gear, the more catch result get. The other factors such as the time dummy and hauling time influence less on the catch. The optimum density number is < 5unit/ha, as the optimum water depth is ? 26,2 m.

Potensi Budidaya Rumput Laut dalam Kaitannya dengan Dampak Perkembangan Pariwisata di Perairan Pantai Kutuh, Badung, Bali Ayu Putu Wiweka Krisna Dewi; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Seaweed culture is one of the main marine and fishery commodities which mostly still occupied by coastal community in Badung regency. One of the center areas for seaweed culture development is at Kutuh Beach in Kutuh Village South Kuta District, Badung regency . Kutuh Beach also known as Pandawa Beach that have developed become a tourism area. The development of Kutuh beach as tourism area affect the development of existing seaweed culture activities. Therefore, a study have been done to get scientific information related to the development of seaweed culture in Kutuh coastal water. This research was conducted at in September-October 2016. The data was collected by carrying out measurements directly on the location of seaweed culture of Eucheuma cottonii at Kutuh coastal water. The data collected in this study including the growth of seaweed Eucheuma cottonii and the quality of Kutuh coastal waters, such us nitrat, phosphate, temperature, salinity, pH, and dissolved oxygen (DO). Our study showed that that the quality of Kutuh Pantai waters is still in good condition for the growth of seaweed except Phosphor that can inhibit the growth of seaweed. Instead of phosphor, seaweed can not grow well in the waters of Kutuh Beach because it is eaten by predators and low intensity of sunlight.

Dekomposisi bahan organik pada sedimen di Tukad Mati dan Tukad Badung, Bali Ima Yudha Perwira; Rani Ekawaty; Alfi Hermawati Waskita Sari; Devi Ulinuha
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The sediment properties of Mati and Badung River, Bali were observed in this study. This study was aimed to know the relation between carbon, nitrogen and total bacterial number in the sediment of those rivers. This study was carried out in Mati and Badung River located in Southern part of Bali, Indonesia. Total carbon (TC), total nitrogen (TN), and total bacterial number of the sediment were observed in this study. Slow stirring method was used to estimate the total bacterial number in sediment, based on their environmental DNA intensity after agarose gel electrophoresis. TC of sediment was analyzed by using total carbon analyzer after combustion at 900oC, while TN was analyzed by using indophenol blue method after digested using Kjeldahl at 420oC for 1.5 hours. The result showed that TC of sediment in the Mati and Badung River were 6,100 and 7,000 mg/kg, respectively. TN of sediment in the Mati and Badung River were 380 and 440 mg/kg, respectively. The pH and electrical conductivity (EC) of sediment in the Mati River were 6,88 dan 0,10 µs/cm, while in the Badung River were 6,80 dan 0,11 µs/cm. Total bacterial number in the Mati river was lower (4.8 × 108 cell /g) than that in the Badung river (3.8 × 108 cell/g). The high value of R2 between total bacterial and TC (0.91), and between total bacterial number and TN (0.83), indicating the high influence of bacteria on the decomposition of organic materials in the sediment.

Profil Hemosit dan Aktifitas Fagositosis Kepiting Bakau (Scylla sp.) yang Terserang Ektoparasit di Ekosistem Mangrove Kuta Selatan, Bali Alfi Hermawati Waskita Sari; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove crab (Scylla sp.) is one of the commodities that live in the mangrove ecosystem and were developed through cultivation, but it encountered many obstacles in its development mainly due to parasitic infection. The purpose of this study is to determine the hemocytes profile and the phagocytic activity of the mud crab (Scylla sp.), in terms of parasitic infection and the water quality of the mangrove ecosystem in South Kuta, Bali. The results of study showed the Haemocyte Total Count (THC) of mangrove crab in the range of 1.8 to 2.57x106 cells/ml and Haemocyte Differential Count (DHC) mud crab shows the percentage of cells hyalinosit 14-32%, 24-38% and the semigranulocytes cells 39-58% of granulocytes cells, phagocytosis percentage of the mud crab (Scylla sp.) are in the range of 53%-66%, while the index of phagocytosis 1.81-2.11. Type ectoparasites found in mangrove crab (Scylla sp.), among others are Vorticella sp., Zoothamnium sp. and Epistylis sp.

Co-Authors . Musyafak A.P. W. K. Dewi Abu Bakar Sambah Alfi Hermawati Waskita Sari Ayu Putu Wiweka Krisna Dewi Bram Setyadji Devi Ulinuha Evrina Cahyani Sinaga Feni Iranawati Habibatus Sholihah I Gusti Agung Bagus Putra Adiguna I Gusti Ayu Febiana Putri Wardeni I Nyoman Sastra Adi Putra I Nyoman Yoga Parawangsa I Wayan Arthana I Wayan Restu I.W. Arthana I.W. Restu Ima Yudha Perwira Irwan Jatmiko Irwan Jatmiko Irwan Jatmiko K.W. Negara Kadek Ira Maresa Ledhyane Ika Harlyan M.A. Pratiwi Mahfud Samdani Muhammad Rizky Asvin Pande Gde Sasmita Julyantoro Widiastuti Widiastuti Yuli Ananda

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