Fish Aggregating Devices (FADs) are tools for collecting fish by using various attractors from solid objects that attract fish to gather. Portable FAD uses sound frequency attractors that can be operated in various fishing areas. Portable FAD is not placed permanently in the waters and can be stored until fishing operations are carried out. The purpose of this activity is to calculate the buoyancy and gravity of portable FAD, determine the composition of the catch, and determine the distribution pattern of fish in the morning, afternoon, and evening. For 17 (seventeen) days, this activity was carried out in Yamdena waters, Ambon. The calculation results of the total buoyancy force of portable FAD were 20554.69 gs, total sinking force was 5460.69 gs, and the extra buoyancy value was 73%. The dominant fish caught using purse seiner were skipjack tuna (Katsuwonus pelamis) of 37.41%, yellowfin tuna (Thunnus albacares) of 33.53%, scad fish (Decapterus russeli) of 11.62%, tuna (Euthynnus affinis) by 8.12%, and sunglir fish (Elagatis bipinnulata) by 5.14%. Portable FAD can attract fish from 15 minutes and continue to increase to a peak at 105 minutes with 160 fish approaching. The highest fish approach to portable FAD was recorded in the morning at 105 minutes at a depth of 20-25 m were 89 fish, the lowest was in the afternoon at 15 minutes at a depth of 5-10 m were 7 fish. The best use of portable FAD is in the morning and evening.

Salah satu teknologi yang dapat mendukung peningkatan populasi cumi-cumi di alam adalah teknologi atraktor cumi-cumi. Atraktor cumi-cumi dapat berfungsi sebagai suatu ekosistem baru dan dapat mengumpulkan cumi-cumi. Tujuan penelitian ini adalah menentukan karakteristik perairan tempat pemasangan atraktor cumi-cumi, menentukan desain kontruksi atraktor cumi-cumi, dan menentukan efektivitas pemasangan atraktor terhadap hasil tangkapan cumi-cumi. Metode penelitian berupa eksperimental fishing dan studi literatur digunakan dalam penelitian ini. Hasil penelitian menunjukkan suhu permukaan laut di periaran Labuhan Haji dan Tajung Luar secara berurutan berkisar 27,10-28,29°C dan 28,15-28,79°C, kondisi dasar perairan Labuhan Haji pasir berlumpur dan Tanjung Luar pasir berbatu. Desain atraktor berbentuk tabung dengan diameter 60 cm, panjang 120 cm, dan berwarna hitam. Pemasangan atraktor efektif mengumpulkan cumi-cumi.

We used fishery catch data from Cilacap Fishing Port and Copernicus data set in July 2016-December 2017 to investigate the impacts of Indian Ocean Dipole (IOD) on upwelling and mackerel tuna distribution in the southern coast of Java. This study implemented a Generalized Additive Model (GAM) for habitat prediction of mackerel tuna in the waters. The present study showed that the extreme negative IOD in 2016 caused a weaker southeasterly wind and even a reversal to the northwesterly wind, as seen off Sumatra in September 2016. The situation produced vertically mixed layer thickening and no upwelling during the southeast monsoon event 2016, consequently resulted in warmer temperature and fewer Chlorophyll-a (Chl-a) compared to the southeast monsoon event 2017. The mackerel tuna production significantly dropped in 2016 and rose in 2017, particularly during the upwelling event. The high Habitat Suitability Index (HSI) was found in southern Central Java in July 2017, expanded bigger in August 2017, and decreased in September 2017. During July and August 2016, the high HSI covered only a less area in the region and disappeared in September 2017. The high HSI indicates that the oceanographic factor is consistent with the catch probability of mackerel tuna.

This study was conducted to determine the effect of the comparison of semolina and brown rice flour on the characteristics of fresh fettucine and to find out the comparison of semolina and brown rice flour to produce fresh fettucine with the best characteristics. The experimental design used in this study was a completely randomized design (CRD) with various types of comparative treatment of semolina and brown rice flour consisting of 6 treatments namely 100% : 0%, 90% : 0%, 80% : 20%, 70% : 30%, 60% : 40%, and 50% : 50%. All treatments were repeated three times so that they were obtained 18 experimental units. The data obtained were analyzed by variance and if the treatment had significant effect then followed by Duncan test. The results showed that the comparison of semolina and brown rice flour had a significant effect on the ash content, total anthocyanin content, antioxidant activity, texture preferences (hedonic test), and color (scoring test). Ratio of 50% semolina and 50% brown rice flour had the best characteristics that were water content of 67.23%, ash content of 0.36%, total anthocyanin content of 1.05 mg/100g, antioxidant activity of 80.08%, purplish brown color and rather liked, rather chewy and ordinary texture, overall acceptance rather liked.

Tingginya pemanfaatan masyarakat terhadap ikan tongkol kontradiksi dengan mayoritas armada kapal yang dimiliki nelayan di Selatan Jawa berupa gill net dan long line yang spesifikasi untuk menangkap tuna dan pelagis besar lainya. Peta daerah penangkapan ikan tongkol sangat dibutuhkan oleh nelayan, terutama ketika musim paceklik ikan berlangsung menjadi tulang punggung hasil tangkap nelayan. Raw data penangkapan diperoleh dari logbook penangkapan Pelabuhan Perikanan Samudera Cilacap (PPS Cilacap) sepanjang tahun 2017. Penelitian ini bertujuan (1) menganalisis sebaran daerah penangkapan ikan tongkol (Euthynnus sp.) untuk alat tangkap gill net dan long line di perairan selatan Jawa dan (2) menganalisis sebaran menegak lapisan rata-rata bulanan suhu dan salinitas perairan yang optimum untuk ikan tongkol. Hasil penelitian ini menunjukkan sebaran daerah penangkapan ikan tongkol (Euthynnus sp.) untuk alat tangkap gill net adalah 105,56⁰-110,78⁰ BT dan 7,48⁰-11,57⁰ LS serta untuk alat tangkap long line adalah 106,69⁰-109,46⁰ BT dan 7,84⁰-9,37⁰ LS. Sebaran daerah penangkapan ikan tongkol menggunakan gill net tertinggi pada bulan Agustus dengan perolehan hasil tangkap 76.634 kg, sedangkan menggunakan long line pada bulan Juli dengan perolehan hasil tangkap 18.741 kg. Sebaran menegak lapisan rata-rata bulanan suhu perairan untuk ikan tongkol optimum pada bulan Juli, Agustus, September untuk gill net dan bulan Juli serta November untuk long line yaitu 26-27⁰ C. Sebaran menegak rata-rata bulanan salinitas perairan untuk ikan tongkol juga optimum bulan Juli, Agustus, September untuk gill net dan long line sepanjang tahun kecuali bulan Januari merupakan kisaran optimum yaitu berkisar 34,0-43,3 %o.