In increasing fish farming production, it is very dependent on the availability of fish feed which has recently been expensive. To overcome this, was necessary to find alternative feeds that have nutritional value according to the needs of cultivated organisms. Maggot (Hermetia illucens Linn.) is a black soldier fly larvae that has a chewy texture, high protein and has the ability to secrete natural enzymes that help improve the digestive system of fish. . The aimed of this research was to find out the amount of maggot (H. illucens Linn.) production in several cultivation media with different treatments. The results of the study found that it took up to 2 weeks to produce maggot that had ready to be used as feed. Maggot had the potential to be cultivated as an alternative to fish feed.
Purse seine is considered to be the most productive fising gear to catch pelagic fish, so there are many purse seiners that based in Bitung Oceanic Fishing Port operate in Fisheries Management Area of the Republic of Indonesia (WPP) 715 Moluccas Sea. There was and issue that the catches of purse seiner around FADs was classified as immature fish. Therefore, necessary to study the diversity and distribution of purse seiner catches in the area. The data collection was done by direct observation and active participation in the field and deep interviews with the crews of Grasia 04 purse seiner. At each hauling, twenty fish from each species were taken randomly measured their fork lengths. Catches during the study consisted of six species; namely skipjack (Katsuwonus pelamis), yellow fin tuna (Thunnus albacores), little tuna (Auxis thazard), scad mackerel (Decapteru smacarellus), rainbow runner (Elagatis bipinnulata), oceanic trigger fish (Canthidermis maculata) and trevally (Selaroides leptolepis). The dominatcatch in each hauling were skipjack, yellowfin, tuna and scad mackerel. Results were showed that most of the catches of Grasia 04 purse seinerin the waters of Moluccas Sea not legal size.
The tsunami early warning system in Bitung does not work optimally, because there is no buoy as a marine equipment for tsunami validation before reaching the coastal area. The lack of buoy can be replaced by placing a tide gauge on the east coast of Lembeh Island. To determine the optimal tide gauge location, the simple additive weighting (SAW) method was used with three criteria. Those three criteria are the potential of tsunami detection, sufficient evacuation time, and an appropriate site for tide gauge installation. Numerical tsunami modeling is used to calculate the first two criteria. The third criterion is a limiting factor, because the tide gauge can only be installed on the dock. Therefore, there were only five candidate locations on the east coast of Lembeh, namely Dorbolang, Pancuran, Posokan, Motto, and Lirang. The result, Posokan is the best location for tide gauge placement with a total score of 2.884. Based on the simulation, an additional tide gauge in Posokan can detect tsunami at the average of 11.4 minutes earlier than use only the tide gauge currently available at Bitung port. It means that people on the coast of Bitung have more evacuation time before the tsunami hits the coastal area.
Seperti kita ketahui, ikan merupakan suatu komoditas yang mudah busuk dan cepat rusak sehingga sangat rentan terhadap penurunan kualitas ikannya, hal ini dapat disebabkan oleh beberapa aktivitas mulai dari pendaratan ikan sampai pendistribusian menuju konsumen. Penelitian ini bertujuan untuk mengetahui aktivitas pendaratan hasil tangkapan terhadap mutu ikan Malalugis (Decapterus spp.) dan mengetahui proses pemasaran hasil tangkapan yang didaratkan di Pelabuhan Perikanan Samudera Bitung. Kami menggunakan metode deskriptif untuk mengumpulkan semua data pada empat kapal Pukat Cincin berukuran 20-30 GT (KM 01, KM 03, KM 08 dan KM 1) sebagai target dalam pengumpulan data. Pengamatan dan wawancara telah dilakukan untuk mengetahui kondisi pelabuhanan perikanan, aktivitas pendaratan hasil tangkapan, dan waktu proses dari palka sampai ke TPI karena aspek-aspek diatas berpengaruh terhadap mutu ikan. Kami menemukan bahwa, proses penurunan dan pengangkutan hasil tangkapan di PPS Bitung belum memperhatikan aspek kebersihan dan kehigienisan. Hal ini dapat dilihat dari penggunaan air untuk mencuci ikan, keadaan dermaga yang dipenuhi genangan air bekas mencuci ikan dan juga penggunaan es yang diletakkan sembarangan di lantai dermaga tanpa alas. Disamping itu, hasil analisa uji organoleptik berkisar 7-8, hal ini sesuai dengan standar SNI. Berdasarkan data hasil penelitian kami berkesimpulan bahwa peranan aktivitas pendaratan kelihatannya tidak terlalu mempengaruhi mutu ikan yang didaratkan meskipun penanganan terhadap ikan belum terlalu baik dimana cara penanganan ikan belum menerapkan prinsip penanganan ikan yang baik atau 3C1Q yaitu Cold (dingin), Clean (bersih), Carefull (baik) dan Quick (cepat).
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