1,720,979 research outputs found
PENGELOLAAN SUMBER DAYA IKAN BILIH (Mystacoleucus padangensis Blkr) ENDEMIK BERBASIS KEARIFAN LOKAL DI DANAU SINGKARAK
Full text linkPesatnya kegiatan penangkapan ikan bilih endemik di Danau Singkarak, sudah mengindikasikan penurunan populasi dan ukuran ikan tersebut. Oleh karena itu perlu dikelola agar dapat dimanfaatkan secara berkelanjutan. Salah satu alternatif pengelolaannya adalah berbasis kearifan lokal. Untuk itu diperlukan kebijakan pengelolaan ikan bilih berbasis kearifan lokal yang ada pada masyarakat nelayan. berdasarkan analisis SWOT dari sembilan strategi yang diperoleh, maka tiga strategi yang menjadi prioritas utama pengelolaan ikan bilih yaitu (1) pengelolaan penangkapan ikan berbasis kearifan lokal dengan nilai manfaat 0,518, (2) pengelolaan habitat ikan melalui pembuatan reservat secara ko-manajemen dengan nilai manfaat 0,280 dan (3) pengelolaan populasi ikan melalui pembenihan dan restoking dengan nilai manfaat 0,202. Peraturan yang lebih baikdalam pengelolaan dan pelestarian ikan bilih adalah dengan hukum adat dengan nilai manfaat 0,095.Overfishing of bilih fish endemic in Singkarak lake indicated a decrease in population and size of the fish. Therefore, it is necessary to do a management in order a sustainable. One of the alternative management is based on local wisdom. The aim of this research was to determine of management priorities based on local wisdom that exist in the fish communities. From the research finding it can be explained that among the nine strategies which were obtained from the SWOT analysis, then the three strategies of the top priority of the management of bilih fish are (1) the management of fishing based on local wisdom with advantage value of 0.518, (2) management of fish habitat through the creation of reserves comanagement with a advantages value of 0.280 and (3) management of fish populations through hatchery and restocking with advantage value of 0.202. The better regulation in management and conservation bilih fish by customary law with adventages value of 0,095
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Developing Higher Order Thinking Skills Assesment Instruments on Invironmental Pollution Material for Class VII
No full textThe seventh grade science teacher at MTsN 3 Kota Pariaman has problems in developing an instrument for assessing higher order thinking skills. In the 2013 curriculum, teachers are required to be able to provide questions in the C4-C6 domain, namely High Order Thinking Skills (HOTS). This study aim to produce a valid and practical assessment instrument for higher order thinking skills on environmental pollution material at the C4-C6 cognitive level. The background of this research is that the questions made by the teacher are still at the C1-C3 level and there are still obstacles for teachers in developing higher order thinking skills assessment instruments, while inthe 2013 curriculum teachers are required to be able to provide questions in the C4-C6 domain. This type of research is research development (Research and Development) which is a research method used to produce certain products. This type of research uses 3 stages of the 4-D model, namely the define, design and develop stages.Based on the research conducted, a very valid assessment instrument of 3,32 was produced by thevalidator, the empirical validity there were 30 valid questions and 10 invalid questions, the reliability in this study was 0,77 with the category of reliability, 94,79% teacher practicality and practicality. students amounted to 80,80%, the difficulty level of the questions was between 0,31 to 0,70 with moderate criteria and the question difference had sufficient criteria. This research can be used as a reference for other researchers related to the development of higher order thinking skills assessment instruments.Keywords : High Order Thinking Skills, Validit
EFEKTIFITAS PERENDAMAN TELUR GURAMI DENGAN PENAMBAHAN NIRA (Arenga pinnata) TERHADAP KELANGSUNGAN HIDUP DAN PERTUMBUHAN LARVA GURAMI (Osphronemus gouramy)
No full textTujuan penelitian menganalisis efek penambahan dosis getah aren (nira) dengan kosenstrasi berbeda terhadap daya tetas telur ikan gurami, menganalisis pengaruh penambahan dosis nira aren dengan kosenstrasi berbeda terhadap kelangsungan hidup larva ikan gurami, menganalisis pengaruh penambahan dosis nira aren dengan konsentrasi berbeda terhadap pertumbuhan. Penelitian dilakukan selama 21 hari, dimulai dari telur sampai larva. Penelitian dilakukan dengan metoda eksperimen yaitu 4 perlakuan, 3 kali ulangan, dianalisis dengan menggunakan metoda one way ANOVA. Hasil penelitian uji deskriptif dihasikan rata-rata daya tetas gurami tertinggi pada perlakuan C (99,00 %), diikuti perlakuan D (98,66%), B dan A (93,33%), Pada uji homogenitas dinyatakan bahwa nilai p>0,05 (0.477>0,05) yang artinya data yang diuji homogen, dan dilihat pada uji one way ANOVA didapat nilai p>0,05 (0,373>0,05), jika sig >0,05 maka H0 diterima yang artinya tidak terdapat perbedaan nyata terhadap pemberian perlakuan yang berbeda pada berat larva gurami
“KONTAMINASI LOGAM BERAT DI KOLOM AIR, SEDIMEN DAN DAGING IKAN NGONGAI (Bagarius bagarius) DI KAWASAN KONSERVASI BATANG KUANTAN SIJUNJUNG”
No full textThis study aims to analyze the content of heavy metals in the water column, sediment, and meat of Bagarius bagarius fish living in the Batang Kuantan River conservation area. The heavy metals analyzed included Hg, Pb, Cu, Zn, and Cd. The research was conducted between April and May 2022 at three stations in the Batang Kuantan Sijunjung Conservation area. Sample analysis was performed at the West Sumatra Provincial Health UPTD Laboratory. The concentration of heavy metals in the water column, sediment, and fish meat was determined using a spectrophotometer based on the AAS method. The results indicated that Hg (0.015 mg/L) had the highest content in the water column at station 3. In sediment, Zn (30.92 mg/L) showed the highest concentration at station 1, whereas, in fish meat, Pb (15.51 mg/kg) was the highest at station 3. The concentration of Hg in the water column exceeded the quality standard for River Water Quality Standards and the Like Class III, as specified in Appendix VI of Government Regulation of the Republic of Indonesia No. 22 of 2021 regarding the Implementation of Environmental Protection and Management, which is 0.002 mg/L. Additionally, the concentration of Cd at station 3 was 3,199 mg/kg, surpassing the sediment quality standard set by the Australian and New Zealand Environment and Conservation Council (ANZECC, 2000) of 1.5 mg/kg. The highest concentration of Pb in fish meat was observed at station 3, which exceeded the quality standard for heavy metal Pb in fish meat and processed products according to SNI Number 7387 of 2009, which sets the maximum limit of heavy metal contamination in food at 0.3 mg/kg.Penelitian ini bertujuan untuk menganalisis kandungan logam berat pada kolom air, sedimen, dan daging ikan Bagarius bagarius yang hidup di kawasan konservasi sungai Batang Kuantan. Jenis logam berat yang dianalisa meliputi Hg, Pb, Cu, Zn, dan Cd. Penelitian dilaksanakan dari bulan April sampai Mei 2022 pada tiga stasiun di kawasan Konservasi Aliran Batang Kuantan Sijunjung. Analisis sampel dilakukan di Laboratorium UPTD Kesehatan Provinsi Sumatera Barat. Konsentrasi logam berat dalam kolom air, sedimen dan daging ikan ditentukan dengan spektrofotometer berdasarkan metode AAS. Hasil penelitian didapatkan bahwa pada kolom air kandungan logam berat tertinggi adalah Hg (0,015 mg/L) di stasiun 3, pada sedimen yang tertinggi adalah Zn (30.92 mg/L) di stasiun 1, sedangkan pada daging ikan yang tertinggi adalah Pb (15.51 mg/kg) ditemukan di stasiun 3. Kadar logam berat tertinggi di kolom air yaitu Hg melebihi baku mutu Baku Mutu Air Sungai dan Sejenisnya Kelas III Berdasarkan Lampiran VI Peraturan Pemerintah Republik Indonesia No. 22 Tahun 2021 Tentang Penyelenggaraan Perlindungan dan Pengelolaan Lingkungan Hidup sebesar 0,002 mg/L, sedangkan logam Cd tertinggi pada stasiun 3 sebesar 3.199 mg/kg melebihi baku mutu untuk sedimen berdasarkan Australian dan New Zaeland Environtment and Conservation Council (ANZECC, 2000) senilai 1.5 mg/kg. Pada daging ikan yaitu Pb tertinggi di stasiun 3, hal ini berarti melebihi baku mutu logam berat Pb untuk daging ikan dan hasil olahannya dalam pangan menurut SNI Nomor 7387 tahun 2009 tentang batas maksimum cemaran logam berat dalam pangan yakni 0,3 mg/kg
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
DISTRIBUSI UKURAN, REPRODUKSI DAN HABITAT PEMIJAHAN IKAN BILIH (Mystacoleucus padangensis Blkr.) DI DANAU SINGKARAK
Full text linkPenelitian tentang biologi reproduksi ikan bilih di Danau Singkarak dilakukan pada bulan Januari –Desember 2010. Tujuan penelitian ini adalah untuk mengetahui distribusi ukuran, tingkat kematangan gonad, fekunditas dan pemijahan ikan bilih. Hasil penelitian menunjukkan ukuran panjang ikan bilih betina matang gonad berkisar antara 70-109 mm dan bobot tubuh berkisar antara 6,4-8,7 gram, ikan jantan pada panjang antara 70-89 mm dengan bobot antara 4,5-6,6 gram. Persentase ikan betina yang memijah setiap stasiun berkisar 68,4-75,7% dan ikan jantan berkisar 73,4-78,4%. Pada saat memijah ikan bilih beruaya dari danau ke sungai Sumpur, Paninggahan dan Baing setiap hari dimulai pukul 16.00 hingga 23.00 WIB. Karakteristik habitat pemijahan mempunyai kecepatan arus sungai antara 10-15 m/detik, kedalaman perairan berkisar antara 20-40 cm, substrat dasar perairan terdiri dari kerikil dan karakal.Study of biology reproduction bilih fish on Lake Singkarak has done a series of studies in January and December 2010. The purpose of this study is to reveal the size distribution, gonada mature level, fecundity and spawning of bilih fish. The research proves that the size of mature female fish gonads bilih range in size of 70-109 mm with a weight of 6.4 to 8.7 g and males 70-89 mm and weighs 4.4 to 6.6 g. Percentage of female fish to spawn each research station ranged from 68.5-75.7 % and males 73.4-78.3%. Bilih spawning fish populations by conducting migration from lakes to rivers Sumpur, Paninggahan and Baing everyday starting at 16:00 until 23:00 am. Characteristics of spawning habitat with river flow velocity between 10-15 m / sec, water depth between 20-40 cm, bottom substrate consists of gravel and karakal
Embryo Development of Ospheronemus gouramy Lac With Young Coconut Cocos Nucifera L Water Immersion
Full text linkThe interaction between genetic and environmental factors influences the development process of the embryo and also determines various individual characteristics. Using coconut water as a diluent for goldfish spermatozoa, because coconut water can be used as an energy source for spermatozoa. This study aimed to analyze the effect of immersing gouramy eggs with young head water on embryo development. This research was conducted at the Freshwater Hatchery of Marine and Fishery Polytechnic, Pariaman from November 2022 to December 2022. This study used an experimental method with a completely randomized design with 4 treatments and 3 replications. The treatment used as the research subject was the concentration of immersing young coconut water : without immersing young coconut water (P0); 15 ml/L (P1); 25 ml/L (P2); 35 ml/L (P3). Observational data on embryo development were analyzed descriptively based on the results of research observations. The data is presented in pictures and the results of the description are referred to using relevant references. The results of this study concluded that the addition of young coconut water to the process of hatching gouramy eggs gave more significant results in the P3 treatment with a dose of 35 ml/l of young coconut water, namely the embryonic cell division process was faster than other treatments
PENGARUH TINGKAT DAN FREKUENSI PEMBERIAN PAKAN TERHADAP KINERJA PERTUMBUHAN DAN PEMANFAATAN PAKAN PADA PEMELIHARAAN BENIH IKAN GURAMI (Osphronemus gouramy)
Full text linkPakan komersial menyumbang hingga 85% dari biaya produksi dalam pembenihan ikan gurami, dengan kenaikan harga yang berdampak pada efisiensi produksi. Optimalisasi feeding rate (FR) dan feeding frequency (FF) sangat penting dalam pengelolaan pakan. Penelitian ini menganalisis pengaruh kombinasi FR dan FF terhadap kinerja pertumbuhan dan pemanfaatan pakan pada benih ikan gurami. Rancangan acak lengkap faktorial digunakan dengan dua tingkat FR (3% dan 6%) serta tiga tingkat FF (1, 2, dan 3 kali per hari), menghasilkan enam kombinasi perlakuan dengan tiga ulangan. Ikan gurami (0,81 ± 0,02 g; 3,79 ± 0,17 cm) dipelihara selama 60 hari dalam unit dengan volume 20 L dengan kepadatan 1 ekor L⁻¹ dan pergantian air yang seragam. Hasil penelitian menunjukkan bahwa kombinasi FR 6% dengan FF tiga kali per hari menghasilkan kinerja pertumbuhan terbaik, dengan bobot akhir (5,74 g), laju pertumbuhan spesifik (3,25% hari⁻¹), pertambahan bobot harian (82,17 mg hari⁻¹), koefisien pertumbuhan termal (4,74), dan faktor kondisi (1,91). Kombinasi FR 6% dengan FF dua kali per hari menghasilkan panjang akhir (6,96 cm), biomassa akhir (113,75 g), hasil bersih (4,87 g L⁻¹), total konsumsi pakan (120,07 g), dan tingkat kelangsungan hidup (100%) tertinggi. Rasio konversi pakan terbaik (0,83) dan efisiensi pakan tertinggi (82,46%) ditemukan pada FR 3% dengan FF tiga kali per hari, meskipun tidak meningkatkan pertumbuhan. Secara keseluruhan, FR 6% dengan FF tiga kali per hari merupakan kombinasi paling efektif untuk mengoptimalkan pertumbuhan dan pemanfaatan pakan (rasio konversi pakan 1,05; efisiensi pakan 81,87%) dan direkomendasikan dalam manajemen pembenihan ikan gurami.Commercial feed accounts for up to 85% of production costs in giant gourami hatcheries, with rising prices impacting production efficiency. Optimizing feeding rate (FR) and feeding frequency (FF) is crucial for managing feed use. This study analyzed effects of different FR and FF combinations on growth performance and feed utilization in giant gourami fry. A factorial completely randomized design was used with two FR (3% and 6%) and three FF levels (1, 2, and 3 times per day), totaling six treatment combinations with three replicates. Giant gourami (0.81 ± 0.02 g, 3.79 ± 0.17 cm) were reared for 60 days in 20 L units at a density of 1 fish L-1, with uniform water exchange. Results showed that FR 6% with FF three times per day yielded the best growth performance, with final weight (5.74 g), specific growth rate (3.25% day-1), daily weight gain (82.17 mg day-1), thermal growth coefficient (4.74), and condition factor (1.91). The FR 6% with FF twice per day combination resulted in the highest final length (6.96 cm), biomass (113.75 g), net yield (4.87 g L-1), total feed consumption (120.07 g), and survival rate (100%). The best feed conversion ratio (0.83) and feed efficiency (82.46%) were observed in FR 3% with FF three times per day, though it did not enhance growth. Overall, FR 6% with FF three times per day was the most effective for optimizing growth and feed utilization (feed conversion ratio 1.05; feed efficiency 81.87%) and is recommended for giant gourami hatchery management
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