Abstrak. Penelitian ini bertujuan untuk mengetahui kelimpahan dan komposisi fitoplankton di Teluk Kodek Pemenang Lombok Utara. Penelitian ini menggunakan metode survey pada 4 stasiun di perairan Teluk Kodek pada Bulan Agustus 2012 dan analisa fitoplankton dilakukan di Laboratorium Perikanan Program Studi Budidaya Perairan Universitas Mataram. Hasil penelitian menunjukkan bahwa kelimpahan fitoplankton di perairan Teluk Kodek pada bulan Agustus 2012 adalah 6557 ind/l. Tercatat 20 spesies fitoplankton yang ditemukan yang dikelompokkan menjadi dua kelompok besar yaitu diatom dan dinoflagelata. Kelompok diatom terdiri 11 spesies, yaitu; Guinardia flaccida, Rhizosolenia setigera, Navicula sp., Chaetoceros sp., Thalassionema nitzschioides, Pleurosigma normanii, Planktoniella sol, Pseudo-nitzchia brasiliana, Lauderia annulata, Socphanopysis palmeriana, Oscillatoria sp., sedangkan dari kelompok dinoflagelata terdiri dari 9 spesies, yaitu; Pyrocytis noutiluca, Dinophysis cudate., Prorocentrum lima, Alexandrium tamarence, Ceratium fusus, C. incisum, C. boehmii, Torodium teredo and Odontella sinensis. Indeks keragaman phytoplankton Teluk Kodek adalah 0,1307 dan masuk kategori keanekaragaman rendah, sedangkan indek keseragaman diperoleh nilai 0,207 dan masuk kategori keseragaman rendah. Nilai tersebut menunjukkan bahwa komunitas fitoplankton di perairan Teluk Kodek pada Bulan Agustus 2012 tidak stabil.Kata Kunci: Diatom; Dinoflagelata; Keanekaragaman; Budidaya Laut.
This study aims to determine tilapia's growth and immune system (Oreochromis niloticus) through feeding with added turmeric flour. This study used a completely randomized design with five treatments, namely K- (feed without adding turmeric flour and injected with physiological solution), K+ (feed without adding turmeric flour and injected with A. hydrophila bacteria), P1 (addition of turmeric flour 1 % / kg of feed + bacterial infection of A. hydrophilla), P2 (Addition of 2% turmeric flour/kg of feed + bacterial infection of A. hydrophilla), and P3 (Addition of 3% turmeric flour/kg of feed + bacterial infection of A. hydrophilla) each treatment had three replicates for a total of 15 trials. The results showed that there was a significant effect (p > 0.05) on growth but no significant effect (p < 0.05) on the survival of tilapia, so further tests were carried out to determine the best treatment in producing tilapia growth, it is known that P2 (Addition of 2% turmeric flour/kg of feed + bacterial infection of A. hydrophilla) is the best treatment in this study.
Gili Sulat Gili Lawang are small islands that have high marine biodiversity and have been designated as a Marine Tourism Park (TWP) covering an area of 10,000 hectares. This study aims to analyze the suitability of zoning and analysis of space use in each zone. The data was collected by using a structured interview technique using a questionnaire and Focus Group Discussion (FGD) approach. Zoning suitability analysis used a Geographic Information System (GIS). The assessment showed that the conditions of the mangrove ecosystem, coral reef ecosystem and seagrass ecosystem were in the bad to good categories. Based on the zoning suitability analysis of 193.83 hectares (44.02%) of the coral reef area suitable for the core zone, 143.33 hectares (32.55%) consists of 108 hectares of coral reef ecosystems and 35.43 hectares of seagrass ecosystems suitable for the zone. limited use, and 9,666.47 hectares are suitable for other zones consisting of a coral reef rehabilitation zone covering an area of 93.11 hectares, a protection zone of 93.11 hectares and other waters 8,585.76 hectares.
Indonesia adalah negara tropis yang kaya akan keanekaragaman hayati, termasuk di dalamnya adalah ikan. Upaya penanggulangan terhadap serangan penyakit dapat dilakukan melalui tindakan pencegahan maupun pengobatan. Beberapa bahan kimia yang biasa digunakan oleh para pembudidaya tidak mudah terurai secara alami, sehingga dikatagorikan tidak ramah lingkungan. Tanaman yang berpotensi untuk mencegah penyakit yaitu daun jambu biji dengan kandungan tannin, daun sirih dengan kandungan minyak atsiri dan daun pepaya dengan kandungan papain. Penelitian ini perlu dilakukan untuk mengetahui pengaruh perendaman dari ekstrak daun jambu biji, sirih dan pepaya terhadap ektoparasit pada ikan karper. Penelitian dilaksanakan sejak bulan Juli hingga Agustus 2016 di Laboratorium Basah Program Studi Budidaya Perairan, Universitas Mataram. Penelitian ini dilakukan menggunakan metode eksperimental dengan Rancangan Acak Lengkap (RAL) Faktorial dengan 2 faktor, yaitu jenis daun dan konsentrasi. Faktor jenis daun terdiri dari daun jambu biji, daun sirih dan daun pepaya, sedangkan faktor konsentrasi terdiri dari0,0 g/l, 1,0 g/l dan 1,5 g/l. Masing-masing perlakuan diulang sebanyak 3 kali sehingga diperoleh 27 unit percobaan. Data yang diperoleh dalam penelitian dianalis menggunakan sidik ragam pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa perendaman ikan karper menggunakan ekstrak daun pepaya 1,0 g/l dapat menurunkan tingkat serangan ektoparasit pada ikan karper.
The Teluk Awang Fishery Port (PP) is located in Mertak Village, Central Lombok Regency, which has the potential to develop as a center of economic growth with a fishery business base. It has a good geographical location because it is protected from waves coming from the Indian Ocean. Currently the Central Government, West Nusa Tenggara Provincial Government and Central Lombok Regency Government are jointly developing Awang Bay as a fishery business center by building a fishing port that can accommodate fishing vessels operating in WPPNRI 573 and 713. This study will look at fish resources ( SDI) in PP Teluk Awang uses the Participatory Action Research (PAR) method which actively involves all relevant parties. The results of the research show that the SDI that was landed in PP Teluk Awang during 2018-2020 as much as 3,559,483 kg was still dominated by pelagic and demersal fish, such as Cakalang fish (62.67%), Layang (10.77%), Tongkol ( 8.29%), Lemadang (6.34%), Tuna (5.42%), Baby Tuna (3.88%), Marlin (1.48%) and other fish (1.15%). The recorded fleet of ships is 27 units with a size of 8-25 Gross Tonnage (GT). The results of this study are expected to be a recommendation related to policies in managing the potential of SDI landed in PP Teluk Awang with the concept of sustainable fisheries.
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