scholarly journals Pengaruh warna lampu light emitting diode dalam air terhadap hasil tangkapan ikan Teri (Stolephorus commersonii) dengan bagan

2019 ◽  
Vol 4 (2) ◽  
pp. 45
Author(s):  
Christianti Triagneriauly Amos ◽  
Revols Dolfi Chistian Pamikiran ◽  
Patrice Nelson Isaak Kalangi ◽  
Henry James Kumajas

Lift nets is one of the fishing gear which operate at the night.  This fishing gear are using light as a aids to attract fish into the fishing area.  Research on the use of LED lights in water on lift nets is carried out in Tateli Weru Waters, with the aim to see how the effect of using different color underwater LED lights on anchovy catches (Stolephorus commersonii), and knowing the amount of anchovy (Stolephorus commersonii) catch on lift net using the experimental method, where data is analyzed using Completely Randomized Block Design (RCBD), and continued by Least Significant Difference test (LSD).  Trial of anchovy fishing (Stolephorus commersonii) was conducted in December 2018 for 10 days by operating boat lift nets using green, blue and green-blue LED lights.  The results showed that the use of LED light colors in blue water had a very significant effect on the amount of anchovy catch (Stolephorus comersonii) compared to to the color of LED lights in green-blue and green water.  Whereas the use of LED light colors in blue-green water with green is not statistically significantly different from the amount of anchovy caught (Stolephorus comersonii).ABSTRAKBagan merupakan salah satu alat penangkapan ikan yang dioperasikan pada malam hari.  Alat tangkap ini menggunakan cahaya lampu sebagai alat bantu untuk menarik ikan masuk ke dalam area penangkapan.  Penelitian mengenai penggunaan lampu LED dalam air pada bagan dilakukan di Perairan Tateli Weru, dengan tujuan untuk melihat bagaimana pengaruh penggunaan lampu LED bawah air dengan warna yang berbeda terhadap hasil tangkapan ikan teri (Stolephorus commersonii), serta mengetahui jumlah hasil tangkapan ikan teri (Stolephorus commersonii) pada bagan dengan menggunakan metode eksperimental, dimana data dianalisis dengan menggunakan  Rancangan Acak Kelompok (RAK) dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT).  Uji coba penangkapan ikan teri (Stolephorus commersonii) dilakukan pada bulan Desember 2018 selama 10 hari dengan mengoperasikan bagan apung menggunakan lampu LED hijau, biru dan hijau-biru.  Hasil penelitian menunjukkan bahwa penggunaan warna lampu LED dalam air biru memberikan pengaruh yang sangat nyata terhadap jumlah hasil tangkapan ikan teri (Stolephorus comersonii) dibandingkan warna lampu LED dalam air hijau-biru dan hijau.  Sedangkan antara penggunaan warna lampu LED dalam air hijau-biru dengan hijau secara statistik tidak berbeda nyata terhadap jumlah hasil tangkapan ikan teri (Stolephorus comersonii).

2020 ◽  
Vol 10 (2) ◽  
pp. 201
Author(s):  
ADHIATMA DHIYAN SAPUTRA ◽  
I GUSTI ALIT GUNADI ◽  
I WAYAN WIRAATMAJA

Effects of Using Multiple LED Beams on Red Dragon Fruit (Hylocereus polyrhizus). Red dragon fruit plant (H. polyrhizus) is a tropical plant and is very adaptable to growing environments and weather changes such as sunlight, wind, and rainfall. Dragon fruit plants is a long day plants (plants that require long enough sun exposure), which means that to produce this plant requires at least 12 hours of radiation. Knowing this, there needs to be a solution so that production stability can be controlled, one of which is by modifying the environment. The purpose of this study was to determine the effect of several colors of LED light (Light Emitting Diode) at the initiation stage of dragon fruit flowers in an effort to increase production. This study used a randomized block design with four treatments and nine replications, while the treatment consisted of control plants, the administration of white LED lights, yellow LED lights and blue LED lights. Three variables were observed, namely the number of flower buds, the number of blooming flowers and the number of young fruits. The results showed that the use of yellow LED lights give the best light intensity when compared to other treatments so that the yellow LED light treatment gave the best results on each variable including 6.44 pieces for flower buds, 7.56 pieces for flowers blooms and 7.56 pieces for young fruit.


2017 ◽  
Vol 50 (6) ◽  
pp. 921-936 ◽  
Author(s):  
WJ Huang ◽  
Y Yang ◽  
M Ronnier Luo

This paper describes an experiment to investigate discomfort glare caused by white light-emitting diode (LED) lights having different spectral power distributions. It included two groups: a ‘Metamerism’ group and a ‘correlated colour temperatures (CCT)’ group. In the former group, it was found that white lights at 7000 K constructed from different blue LEDs and the same red and green LEDs gave about the same glare perception. In the latter group, there was a significant difference in glare perception between white lights having different CCTs. Finally, glare models, including unified glare rating (UGR) and the newly derived QUGRspd, and mUGRspd models, were tested using the data from the experiment. All of them gave quite accurate predictions of the data.


Author(s):  
Kil-Nam Kim ◽  
Hye-Sung Song ◽  
Ryong-Jin Choe ◽  
Zhi-Juan Huang ◽  
Qiu-Ying Huang ◽  
...  

Recently, light traps using light-emitting diode (LED) lights have been applied to monitor or control insect pests. The oriental armyworm, Mythimna separata Walker, is an important insect pest that has caused damage to several cereal crops, including corn, wheat and rice. The present study aims to seek out a sensitive wavelength causing high phototactic response in M. separata. The study evaluated the phototactic responses of M. separata moths to several LED lights of different wavelengths and luminance intensities under laboratory condition. Results showed that green (520 nm) LED light resulted in significant phototactic response of M. separata moths compared to LED lights of other wavelengths. Additionally, the highest attraction rate of the moths to green LED light appeared in luminance intensity group of 200 lux compared to the other intensities groups. Experiments under optimum conditions based on the above experiments revealed that the green LED light exhibited the strongest attraction rate (64.44%) among all experimental groups. An experiment performed in a net cage also showed that green LED light resulted in the highest phototactic response of M. separata moths, 1.7 times more than a commercial black light used as control. These findings clearly demonstrate that M. separata moths have a high sensitivity to the green LED light. Therefore, a light trap equipped with green LED light could be useful for monitoring and controlling M. separata moths.


Author(s):  
Mikhail D. Waladow ◽  
Henry J. Kumajas ◽  
Isrojaty J. Paransa

ABSTRACT Tuna, a dominant commodity in national capture fisheries sector, has significantly contributed to the development of the nation as a source of fishermen livelihoods and food for people. One alternative fishing gear to catch tuna is hand lines using artificial bait made of waste plastic packaging. The use of such artificial bait catches sufficient number of fish but the size of the artificial bait used cannot be determined with certainty. This study established the size of artificial bait which gives the best catches based on operating time by using Randomized Block Design and Least Significant Difference test. The analysis showed that the bait size of 7.0´0.6 cm had the most catch of Thunnus albacores and Katsuwonus pelamis. Total catch was 227 fish, total length 20 – 30 cm and width of the body 9.5 – 21.5 cm. Keywords: resource, artificial bait, tuna hand line, tuna albacore   ABSTRAK Tuna, komoditas unggulan sektor perikanan tangkap nasional, telah memberikan kontribusi yang relatif lebih besar kepada pembangunan bangsa, antara lain sebagai sumber mata pencaharian nelayan serta penyedia kebutuhan konsumsi masyarakat. Salah satu alternatif alat tangkap untuk menangkap jenis tuna adalah pancing ulur menggunakan umpan buatan dari bahan limbah plastik kemasan. Penggunaan umpan buatan ini memberikan hasil tangkapan yang cukup tetapi ukuran umpan buatan yang digunakan tidak dapat ditentukan dengan pasti.        Penelitian ini menetapkan ukuran umpan buatan mana yang memberikan hasil tangkapan terbaik berdasarkan waktu pengoperasian dengan menggunakan Rancangan Acak Kelompok (RAK) dan untuk mengetahui umpan buatan yang paling baik diantara umpan buatan yang digunakan dianalisa dengan Uji Beda Nyata Terkecil (BNT). Hasil menunjukkan umpan buatan ukuran 7,0 x 0,6 cm paling berpengaruh terhadap jumlah hasil tangkapan Thunnus albacores dan Katsuwonus pelamis. Total tangkapan 227 ekor, panjang total 20 – 38 cm dan lingkar tubuh 9,5 – 21,5 cm. Kata-kata kunci: sumber daya, umpan buatan, tuna hand line, tuna albacore


2005 ◽  
Vol 16 (2) ◽  
pp. 98-102 ◽  
Author(s):  
Daniela Francisca Gigo Cefaly ◽  
Giovano Augusto de Oliveira Ferrarezi ◽  
Celiane Mary Carneiro Tapety ◽  
José Roberto Pereira Lauris ◽  
Maria Fidela de Lima Navarro

The purpose of this study was to evaluate the microhardness of resin-based materials polymerized with a LED (light-emitting diode) light-curing unit (LCU) and a halogen LCU. Twenty cylindrical specimens (3.0 mm in diameter and 2.0 mm high) were prepared for each tested material (Z100, Definite and Dyract). Specimens were light-cured with two LCUs (Ultraled and Curing Light 2500) for either 40 or 60 s on their top surfaces. Hardness was measured on top and bottom surfaces of each specimen. Statistical analysis was done by ANOVA and Tukey's test (p<0.05). There was no significant difference in hardness between LED LCU and halogen LCU for Z100 and Dyract on top surface. Conversely, lower hardness was recorded when Definite was light-cured with the LED LCU than with the halogen lamp. On bottom surface, hardness was significantly lower for all materials light-cured with LED LCU. Z100 was harder than Dyract and Definite regardless of the light curing unit. There was no significant difference in hardness between the exposure times on top surface. Higher hardness was obtained when the materials were light-cured for 60 s on bottom surface. The tested LED was not able to produce the same microhardness of resin-based materials as the halogen LCU.


Author(s):  
Rodrigo Fernández-Pellón ◽  
Meshari Saghir ◽  
Ayman Jaber ◽  
Fazil Apaydin

AbstractPhotography for preoperative analysis and follow-up is indispensable for the facial plastic surgeon. The use of strobe flash units, light-emitting diode (LED) lamps, and their position related to axis of the patient can affect the nasal contours and nasal measurements. The aim of this study was to compare the rhinoplasty pictures taken under three different lighting settings and two different positioning at 30- and 45-degree angles, and with direct measurements taken by caliper from the subjects. Standardized rhinoplasty pictures from 10 patients were taken in frontal view in a studio. These pictures were taken under three different lighting settings: built-in flash of the camera, two strobe flashes, and two LED continuous lights placed at 30 to 45 degree angles to the patient. All the pictures were uploaded to Rhinobase 2.0. In five subjects, direct measurements were done by using a Vernier caliper and compared with the computer measurements. In this study, when comparing the light sources and the angles without taking single flash into account, no relation was found between strobe lights at 30 and 45 degrees and between LED lights at 30 and 45 degrees regarding tip width, base bony width, dorsum width, interalar width, and nasal length. However, a statistically significant difference was found when the angle was changed from 30 to 45 degrees for tip width, interalar width and nasal length. The use of two LED continuous lights or two strobe lights in a studio setting has given similar results. Changing the angles of the light sources from 30 to 45 degrees affected only the tip width and the interalar width; otherwise the rest of the nasal measurements did not show any significant changes. The pictures taken at 45-degree angles to the subject showed the closest values to the direct measurements done on the patient


2021 ◽  
Vol 14 (1) ◽  
pp. 25
Author(s):  
Lukman Daris ◽  
Andi Nur Apung Massiseng ◽  
Jaya Jaya ◽  
Irsandi Irsandi

Fishery is one of the human activities to utilize aquatic resources in fresh, brackish and marine waters. This effort is made to meet the needs of human life for the availability of animal protein for growth and as a source of meeting other economic needs. Fishery business consists of components that are interrelated with one another, namely capture fisheries and aquaculture and supported by marketing and processing of fishery products. One of the fishing gear used by fishermen around the coast is a hand line. The purpose of this study was to find out which light are effective in the operation of hand line fishing gear in Takalar waters. The data collection technique was done by using the trial method (Expermental fishing), by conduction trials using two different lamps, namely LED lights (light emitting diode) and petromax lamps. This research was conducted in Takalar Waters in July-August 2020. The results showed that the size structure of the squid and cuttlefish caught on the LED lights ranged from 6- 27.5 cm, totaling 310 tail, weighing 41.15 kg (69.51%), whilw the size structure of the squid caught in the petromax lamp ranges 9,5-27,6 cm totaling 136 tail, weighing 17.91 kg (30.49%), significantly different from the result of t-student.


2021 ◽  
Vol 15 (2) ◽  
pp. 203-209
Author(s):  
Li Qiao ◽  
Shibao Guo ◽  
Yinli Jin ◽  
Chunsheng Wang ◽  
Jian Yin ◽  
...  

To investigate the phototaxis and photophobism behaviors and the gender differences of S. punctaria in response to different light spectra, 18 lights with wavelengths 370–600 nm were used, and effects of green spectrum (520–525 nm) and yellow spectrum (590–595 nm) on the oviposition, hatching rate, eclosion rate and longevity of S. punctaria (indoor fresh leaf-bred for 5 generations) were studied. The results showed that under the light of 370–665 nm, both female and male adults of S. punctaria had the phototropic and photoevasive behaviors (showed multi peaks), with females tended to orange and violet lights (395–400 nm); males tended to amber and violet light (370–375 nm). After 520–525 nm and 590–595 nm light irradiation at night, the number of oviposition decreased by 55.70% and 44% (significant difference); and the hatching rate decreased by 13.33% and 9%, respectively. Both the above two lights have effects on the pre-oviposition and average oviposition period, and have significant effect on the longevity of female adults, while no significant effect on male adults; and both the longevity of female and male adults was prolonged with the increased population density. This study is expected to provide a reference for the research and biocontrol of S. punctaria.


Author(s):  
Ganang Dwi Prasetyo ◽  
Ronny Irawan Wahju ◽  
Roza Yusfiandayani ◽  
Mochammad Riyanto

<div class="WordSection1"><p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>Bycatch problem is a global issue and can be a driver of marine megafauna declines in the world, such as sea turtle, where is the animal's status as endangered species. Green Light Emitting Diode (LED) is known as an innovative technology to reduce sea turtle bycatch without reduce target catch effectively. </em><em>The </em><em>use</em><em> </em><em>of green LED in order to reduce sea turtle bycatch in gillnet fisheries was carried out in Paloh Coast, West Borneo during August to October 2015. Experiment performed a total of 20 settings with gillnet fleets operate two units simultaneously, ie gillnet control (without LED lights) and gillnet experiment (with LED lights). Turtles caught predominantly were in the juvenile phase as 57.14% and the potential location of capture sea turtle bycatch in station 2 (</em><em>1˚52' - 1˚56' LU and 109˚14' - 109˚18' BT)</em><em>. The results, showed that the green turtle (Chelonia mydas) were caught of 7 turtles, were captured by control gillnet 6 turtles with an CPUE 0.29 ± 0.03 Turtle/E, while by experimental gillnet 1 turtle with an CPUE by </em>0,04 ± 0,009<em> Turtle/E. The used of green LED light was significantly reduce sea turtle bycatch of 85% without decreasing target catch.</em><em></em></p><p class="TubuhTulisanAll"><strong><em>Keywords:</em></strong><strong><em> </em></strong><em>CPUE, green LED light</em><em>, </em><em>sea turtle bycatch</em><em></em></p><p align="center"><strong>ABSTRAK</strong></p><p class="Abstrakisi">Permasalahan terkait <em>bycatch </em>merupakan isu utama global yang dapat mengancam penurunan populasi megafauna laut seperti penyu yang telah berstatus <em>endangerd species</em>. Lampu LED merupakan inovasi teknologi untuk mengurangi <em>bycatch</em> penyu tanpa mengurangi hasil tangkapan ikan utama secara efektif. Penggunaan lampu <em>Light Emmitting Diode</em> (LED) hijau untuk mengurangi <em>bycatch</em> penyu pada perikanan jaring insang (<em>gillnet</em>) dilakukan di perairan Paloh, Kalimantan Barat selama bulan Agustus hingga Oktober 2015. Uji coba dilakukan dengan menggunakan 2 unit kapal <em>gillnet </em>yang dioperasikan di setiap stasiun pengamatan secara bersamaan dengan jumlah ulangan sebanyak 20 kali, diantaranya <em>gillnet</em> kontrol (tanpa lampu LED) dan <em>gillnet</em> eksperimen (dengan lampu LED). Penyu yang tertangkap cenderung didominasi oleh fase juvenile sebesar 57,14% dan lokasi potensi tertangkapnya <em>bycatch</em> penyu pada stasiun 2 (1˚52' - 1˚56' LU dan 109˚14' - 109˚18' BT). Hasil penelitian menunjukkan bahwa penyu yang tertangkap merupakan penyu hijau (<em>Chelonia mydas</em>) berjumlah 7 ekor, terdiri dari 6 ekor tertangkap pada <em>gillnet</em> kontrol dengan <em>CPUE</em> 0,29 ± 0,03  ekor/E, dan 1 ekor pada <em>gillnet </em>eksperimen dengan <em>CPUE</em> 0,04 ± 0,009 ekor/E. Penggunaan lampu LED hijau memberikan pengaruh secara <em>significant</em> untuk mengurangi <em>bycatch</em> penyu dengan persentase pengurangan sebesar 85% tanpa mengurangi hasil tangkapan ikan utama.</p><p class="TubuhTulisanAll" align="left"><strong>Kata kunci:</strong>  CPUE, lampu LED hijau, <em>bycatch</em> penyu</p></div>


2015 ◽  
Vol 3 (1) ◽  
pp. 14
Author(s):  
Suniati Mokodompit ◽  
Emil Reppie ◽  
Johnny Budiman

Title (Bahasa Indonesia): Pengaruh jenis umpan terhadap hasil tangkapan ikan cendro [Tylosurus sp.] dengan pancing layang-layang. Needlefish is one of the economically important fish resources from Bangka Strait North Minahasa regency. Common fishing gear used by fishermen is kite fishing. Although this gear is very simple and traditional, but its efficiency and selectivity of fishing have potential to meet the development of environmentally friendly and sustainable criteria. The success of kite fishing, relies on the availability of fish bait; therefore, the purpose of this research was to study the effect of kite fishing baits onneedlefish catch; and identify the types of fish caught. This research was done in Bangka Strait North of Minahasa, based on experimental method. Four kinds of bait were used as treatment, scad (Decapterus macarellus), sardine (Sardinella gibosa), anchovy (Stolephorus indicus) and artificial bait of plastic hose. Catch data were collected using 8 units of  kite fishing; and data analysis was done based on randomized block design. The catch was 61 fish in total consisting of Tylosurus crocodiles (57 fish) andTylosurus acus melanotus (4 fish). ANOVA showed that the difference of kite fishing baits caused high significant effect in catch of needlefish. The LSD for the treatment declared that the use of sardine bait wassignificantly different from anchovy, scad  and  artificial baits. The use of anchovy baits was also significantly different from scad and artificial baits,but there was no significant difference between scad baits and artificial baits. Ikan cendro merupakan salah satu sumberdaya ekonomis penting dari perairan Selat Bangka Kabupaten Minahasa Utara. Alat tangkap yang umum digunakan oleh nelayan adalah pancing layang-layang. Walapun alat ini sangat sederhana dan tradisional, tetapi masih memiliki potensi untuk meningkatkan efesiensi penangkapan dan selektivitas dalam memenuhi pengembangan kriteria ramah lingkungan dan berkelanjutan. Keberhasilan pancing layang-layang sangat bergantung pada ketersedian ikan umpan, oleh karena itu tujuan penelitian ini adalah mengetahui pengaruh jenis umpan pada pancing layang-layang terhadap tangkapan ikan cendro dan mengidentifikasi jenis-jenis ikan yang  tertangkap. Penelitian ini dilakukan di perairan Selat Bangka Minahasa Utara, didasarkan pada metoda eksperimental. Empat jenis umpan yang digunakan sebagai perlakuan, yaituikan layang(Decapterus macarellus), ikan sardin (Sardinella gibosa), ikan teri(Stolephorus indicus) dan umpan buatan selang plastik. Data tangkapan dikumpulkan mengunakan 8 (delapan) unit pancing layang-layang dan analisis data didasarkan pada rancangan acak kelompok. Tangkapan total sebanyak 61 ekor yang terdiri dari Tylosurus crocodiles (57 ekor)danTylosurus acus melanotus (4 ekor). Analisis sidik ragam menunjukkan bahwa perbedaan umpan pada pancing layang-layang memberikan pengaruh yang sangat nyata terhadap hasil tangkapan ikan cendro. Uji BNT untuk perlakuan menyatakan bahwa penggunaan umpan sardin berbeda sangat nyata dengan umpan teri, umpan layang dan umpan buatan. Penggunaan umpan teri juga berbeda dengan umpan layang dan umpan buatan tetapi tidak ada perbedaan antara umpan layang dan umpan buatan.


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