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RESPONS TINGKAH LAKU CUMI-CUMI (Uroteuthis duvaucelli, Orbigny 1835) TERHADAP WARNA DAN INTENSITAS CAHAYA YANG BERBEDA (Behavior Response of Squid Uroteuthis duvaucelli, Orbigny 1835 to Different Light Color and Intensity) Denta Tirtana; Mochammad Riyanto; Sugeng Hari Wisudo; Adi Susanto
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 16, No 2 (2020): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.16.2.%p

Abstract

Cumi-cumi merupakan salah satu target utama dalam perikanan dengan menggunakan cahaya (light fishing) di Indonesia. Penangkapan cumi-cumi mengandalkan indera penglihatan berupa rangsangan cahaya agar cumi-cumi mendekati alat tangkap. Respons penerimaan cahaya oleh mata cumi-cumi dipengaruhi oleh berbagai faktor diantaranya warna dan intensitas. Penelitian ini bertujuan untuk menetukan respons tingkah laku dan adaptasi mata cumi-cumi dengan perbedaan warna yakni biru, putih dan merah yang intensitas rendah (1,1 x 10-4 – 2,3 x 10-4 W/cm2), sedang (9,6 x 10-4 – 2,0 x 10-3 W/cm2) dan tinggi (9,4 x 10-3 – 1,2 x 10-2 W/cm2). Adaptasi retina cumi-cumi dilakukan dengan pendekatan histologi untuk setiap perlakuan. Respons tingkah laku cumi-cumi dilakukan dengan pengamatan 4-40 ekor cumi-cumi berukuran 4-10,5 cm pada bak perlakuan. Respons tingkah laku yang diamati adalah preferensi zona, jumlah jetting dan Nearest Neighbor Distance (NND). Adaptasi retina mata cumi-cumi yang memiliki nilai rasio tertinggi adalah lampu warna biru dengan 74,54%. Cumi-cumi berada pada zona redup dihampir semua perlakuan, kecuali pada lampu warna biru dengan intensitas rendah cumi-cumi berada pada zona terang. Intensitas yang ditambahkan membuat jumlah jetting pada semua perlakuan bertambah. Jarak antar individu pada lampu biru menyebabkan semakin menjauh, sementara pada lampu putih dam merah jarak antar individu mendekat pada intensitas sedang. Squid is one of main targets of the light fishing in Indonesia. The squid fishing relies on the sense of sight i.e. light stimulus so that the squid comes near to the fishing gear. Response of the light reception by squid eyes are affected by many factors, i.e. color and intensity. This study aimed to determine response of fish behavior and eye adaptation of the squid with the difference of color, i.e. blue, white, and red that had low intensity (1.1 x 10-4 – 2.3 x 10-4 W/cm2), medium intensity (9.6 x 10-4 – 2.0 x 10-3 W/cm2) and high intensity (9.4 x 10-3 – 1.2 x 10-2 W/cm2). To know the retina adaptation of squid was observed by histology approach for every treatments. To know response of squid behavior was observed with 4-40 squids on the size 4-10.5 cm on the treatment tub. Response of squid behavior observed were zone prefence, the number of jetting and Nearest Neighbor Distance (NND). The retina adaptation of squid that had the highest ratio value was blue lamp with 74.54%. The squid was on the dim zone for almost of treatment, except on the blue lamp with low intensity (the squid on the clear zone). The intensity addition increased the number of jetting on the all of treatment. The gap inter-individu on the blue lamp caused the individu far away, the gap inter-individu on the white lamp caused the individu closer in the medium intensity. 
DC Converter Experiment on Cu-Zn Seawater Battery for Fishing Lamp Energy Source of Lift Net Fisheries Adi Susanto; Mulyono Baskoro; Sugeng Hari Wisudo; Mochammad Riyanto; Fis Purwangka
Jurnal Perikanan dan Kelautan Vol 8, No 1 (2018)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v8i1.3680

Abstract

Light fihing activities developed rapidly after the invention of electric lights. The innovation of Light Emitting Diode (LED) as energy saving lamp has a great opportunity to be used in fishing activities. LED lamps require low voltage and current, so that it can be combined with renewable energy sources to encourage more environmentally friendly of fishing capture activity. This study aims to determine the design and construction of an optimal DC converter using Cu-Zn seawater battery as an early stage of LED lamp development with seawater energy source for fixed lift net fishery. The research was conducted at Fishing Technology Laboratory, Department of Fisheries Resources Utilization, FPIK-IPB in August 2017. The treatments were number of windings (30:50, 50:80) and number of toroid (single, double) that was used in DC converter circuit. The energy source used comes from a single seawater battery cell with a zinc anode (Zn) and a copper cathode (Cu) with a size of 40x36 cm, inserted into a 3-inch diameter PVC tube. The voltage was measured by a digital oscilloscope (Iwatsu DS 5102), the current was measured using a multimeter (Sanwa CD 771) and the light intensity was measured using a lux meter. Differences in the number of windings and toroid have a significant effect on the value of inductance. Single Toroid with 80 loops produces the largest inductance value (143.1 mH) compared to other treatments. The use of DC converter with dual toroid and 50:80 winding provides better performance than other treatments with maximum voltage, current and intensity respectively 2.12 V; 121,80 mA and 128 lux