4 applications of LED lighting technology in Marine Fisheries

Light is one of the most important ecological factors in the marine environment, which is closely related to the growth, development, reproduction and feeding of marine organisms. With the rapid development of optoelectronic technology, LED has been widely used in the field of Japanese fisheries, so that LED can replace natural light, directly affects the marine biological reproduction, development, status, quantity and distribution, and marine fishing industry.

Japan has a natural and rich fishery resources, is one of the most developed countries in the world, and its aquaculture sector is also the world's leading position. As a big country in China, it is of great practical significance to study the application of LED in the field of Japanese fishery.

LED lamp, which is known as the fourth generation light source in the world, has many advantages, such as long life, low consumption, directionality and no light pollution. It has been gradually extended to the marine fishing industry in the late 1990s. In the field of Japanese aquatic products, the application of LED is mainly reflected in the following aspects.

LED lamp

Fishing lamp is the phototactic characteristics using fish, fishing tools and improve catches yield by emitting set fish, is an indispensable auxiliary equipment for fishing. The fishing lamp has experienced from the new generation of kerosene lamp, incandescent lamp, tungsten lamp, metal halide lamp LED lamps to update, every innovation and human development are closely connected with electric light source. The LED lamp can be divided into water lamp and underwater lamp, its power consumption is only the traditional 1/16 - 1/32 lamp, it can achieve the same luminous effect. The LED lamp can freely change the wavelength corresponding to adjust the brightness, achieve energy saving and environmental protection in the background of the global energy shortage, can be said to be the most advanced lamp set.

Marine fishing has always been a leading industry in Japan, more than 80% of the production of marine fishing. In Japan, marine fishing boats, light work occupies an important position, can be said that the lamp is a necessary tool for trapping fish. Japan in 2005 began to study the use of LED to replace the metal halide lamp Yudeng, in order to achieve saving energy consumption and increase the yield, improve the working environment of fishing. In 2007, Japan has built the world's first LED lamp device around the Japanese fishing boat, built in 2009 and follow up a victory with hot pursuit, the second ship LED lamp full fishing device. Since then, the introduction of a wide range of LED Japanese fishing fish lamps and quickly gained popularity and promotion. At present, the majority of Japanese fishing boats are equipped with LED lamp, metal halogen lamp and LED lamp and the fishing boat. The LED set lamp high light transmittance, high directivity, light through the water to the sea deep, so the Japanese fishery generally used LED set colors to make Japan's marine fishing volume continued to maintain the world.

LED germicidal lamp

It is well known that ultraviolet radiation has a strong bactericidal effect. Therefore, the use of wavelength 2500A - 2600A UV irradiation to kill microorganisms in the water (such as viruses, bacteria, etc.) of the DNA structure, so that the water can be purified bacteria. In February 8, 2010, the Japan Institute of Industrial Technology Research Institute released a new invention of the Institute, that is, using LED to produce a germicidal effect of UV lamps. Since then, after further research, the Japan Institute of science and technology and science and technology development agency has successfully developed a wavelength of 2550A - 3500A high power deep UV LED light. Compared with the traditional ultraviolet germicidal lamp, LED germicidal lamp not only low power consumption, high safety, and long service life, small volume, has been widely used in the field of Japanese fisheries, sterilization and net water on deep sea water. Individual fish tank is widely used in this LED sterilization lamp.

Breeding of marine shellfish

Marine shellfish is one of the most important members of marine life, and is also one of the most important marine animals. The wavelength of ultraviolet radiation can induce the 2537A of seawater, abalone, and other shellfish put fine pearl oyster eggs. Light experiments show that LED light has the same effect on marine shellfish. At the same time, the blue LED and green LED were effective for the proliferation of shellfish, the improvement of shellfish and the reduction of nematode infection. At present, the relevant departments of Japan are based on practical experience to further study the effect of LED light on the growth, development and reproduction of marine shellfish, in order to get more mature and more efficient research results.

Plankton feeding

Plankton is the basis of other biological productivity in the marine ecosystem. Because of their wide distribution and strong breeding ability, they provide food sources for the diversity of marine life. In the field of aquatic plankton is the main food, shellfish, shrimp, fish larvae and some adult fish, jellyfish, shrimp and other planktonic animal is very important seafood, so plankton aquatic scientists increasingly attention. LED lights can be adjusted by red, green, blue and other colors of different wavelengths of light to adjust the intensity of the color of the light. Studies have shown that different types of marine plankton can use different wavelengths of light for photosynthesis, which coexist in the ocean. Therefore, Japan's use of LED spectrum of photosynthesis of plankton feeding, not only can increase the production of plankton, accelerate the plankton growth rate, but also can adjust the nutrient composition of plankton, which indirectly provides a basic food for fish farming, improve the survival rate of aquatic fish.

epilogue

At present, the focus of Japan's fisheries policy