Methods for The Developmentand Evulationof Maritime Technologies (DEMAT 2019), İzmir, Turkey, 5 - 07 November 2019, vol.11, no.1, pp.91-96
Fishing with light is a successful of modern fishing technique that was used in all of the around in the world for a long time ago until now in various fishing gears. Fishing lamp is a key component for light fishing activities. The light sources of fishing lamps have developed from torch, acetylene, kerosene, incandescent, mercury, fluorescent, and halogen lamps to the metal halide lamps. Meanwhile, light source in fishing attraction by light, which mainly includes filament lamp, halogen tungsten lamp, mercury and metal halide, all belongs to thermal light source. The light from these lamps is omnidirectional and, therefore, most of it does not reach the target areas and these lamps consumed a great amount of electric energy and fuel. Compared with these conventional lamps, LED lamps have many advantages, such as high efficiency, a long lifetime, fast response and together with climate resistance. Thus, LEDs have considered the most promising new lighting solution for fishing activities. The objective of this study is to investigate and to observe the effects of LED lamps on the fish communities around artificial reef in İzmir Bay. The study was carried out artificial reef site which is oldest one (28 years old) and located in two different depth range 9-18m around Hekim Island in İzmir Bay. The coordinates of the study area are 38°27’07’’N - 26°46’27’’E and 38°27’09’’N - 26°46’31’’E. Thirty cubic concrete blocks were deployed in six pyramids (four blocks forming the base, with one on top). The main fish communities are Boops boops, Scomber japonicus, Atherina boyeri, Loligo vulgaris, Trachurus mediterraneus, Scomber scombrus, Sardina pilchardus, Diplodus vulgaris, Diplodus annularis, Serranus scriba, respectively. It has been determined as preliminary results from the study that the most efective color on the fish communities around the artificial reef is green.