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Indonesia is a mega biodiversity country with abundant macroalgae. The macroalgae are distributed along the coast and function to maintain the balance of the coastal marine ecosystem, including in Bama Beach, Baluran National Park, Situbondo, Indonesia. This study was to determine the abundance, distribution, and diversity of macroalgae in Bama Beach Baluran National Park, East Java, between April 2019 and June 2019. The research was conducted with a purposive sampling method at two stations, each consisting of five substations using transect blocks. Five species of macroalgae from the Phaeophyceae class (Padina australis, Sargassum aquifolium, Polycladia myrica, Eucheuma edule, and Dictyota pinnatifida), a Rhodophyta (Jania pumila), and Chlorophyta (Halimeda macroloba) were found in the study site. Padina australis was a species that had the highest abundance and dominated the observation station. Nonetheless, according to the Shannon-Weaver Index in the study area, overall macroalgae diversity was classified as a low category with a value of 0.35. The high availability of nutrients influences these conditions in ecosystems with the domination of Padina australis, followed by Sargassum aquifolium at Station I and II.

Antibiotics are compounds that are used to inhibit the growth of disease or are commonly referred to as drugs. Some examples of antibiotics most commonly used in shrimp culture are tetracycline, oxytetracycline, and chloramphenicol. In shrimp farming, antibiotics function as disease prevention or as a cure for the disease. But if the application is not under the dose, it will cause residues on the shrimp and harm human health if consumed. The purpose of this study was to determine the antibiotic content of tetracycline, oxytetracycline, and chloramphenicol in vannamei shrimp in intensive ponds in Kalipuro, Banyuwangi, East Java, and to determine the safety and feasibility of vannamei shrimp products consumed by the public based on the EDI (Estimated Daily Intake) and HQ (Hazzard) indexes. Quotients). The research was conducted using HPLC (High-Performance Liquid Chromatography) and ELISA (Enzyme-Linked Immunosorbent) methods to analyse the antibiotic content of vannamei shrimp then, the data obtained were processed using the EDI (Estimate Daily Intake) method to obtain daily estimates and HQ (Hazzard Quotient). to carry out an antibiotic risk assessment in the human body. The results obtained from this study were that vannamei shrimp in intensive ponds in Kalipuro, Banyuwangi, and East Java were negative for tetracycline, oxytetracycline, and chloramphenicol antibiotics. So the conclusion obtained from this study is that vannamei shrimp from intensive ponds in Kalipuro, Banyuwangi, and East Java is safe for consumption because it is negative for antibiotic residues.

Parasite is one of the infectious disease pathogens in fish which can cause secondary infection by bacteria, fungi and viruses. Therefore, fish quarantine activities are needed to prevent disease transmission and are carried out by the fish quarantine center. This study aimed to characterize the types of parasites that infect fish commodities that will be trafficked at the Fish Quarantine Center, Quality Control and Safety of Fishery Products in Semarang, Central Java. Parasitic examination was carried out using the original microscopic method by scraping the mucus, gills and internal organs, then characterizing it morphologically. The results showed that the infected parasites in fish samples included ectoparasites (Trichodina, Gyrodactylus, Dactylogyrus, Chilodonella, and Argulus) and endoparasites (Anisakis).Keywords:ParasitesFishery CommodityBKIPMHP SemarangABSTRAKParasit merupakan salah satu patogen penyebab penyakit infeksius yang dapat memicu terjadinya infeksi sekunder oleh bakteri, jamur maupun virus. Oleh sebab itu, perlu dilakukan tindakan karantina ikan untuk mencegah terjadinya penyebaran penyakit yang dilakukan oleh balai karantina ikan. Penelitian ini bertujuan untuk mengkarakterisasi jenis parasit yang menginfeksi komoditas ikan yang akan dilalulintaskan di Balai Karantina Ikan, Pengendalian Mutu dan Keamanan Hasil Perikanan Semarang, Jawa Tengah. Metode penelitian yang digunakan yaitu pemeriksaan secara mikroskopis menggunakan metode natif/langsung pada lendir, insang dan organ dalam ikan, dilakukan karakterisasi secara morfologis. Hasil penelitian menunjukkan bahwa sampel ikan terinfeksi parasit dari golongan ektoparasit (Trichodina, Gyrodactylus, Dactylogyrus, Chilodonella, and Argulus) dan endoparasit (Anisakis).Kata kunci:ParasitKomoditas Perikanan BKIPMHP Semarang

Andriyono S, Alam MJ, Sumartiwi L, Mubarak AS, Pramono H, Suciyono, Kartika GRA, Sari AHW, Sektiana SP. 2022. The diversity of Carangidae (Carangiformes) was revealed by DNA barcoding collected from the traditional fish markets in Java and Bali, Indonesia. Biodiversitas 23: 2799-2806. Biodiversity has been utilized in various ways, including in fulfilling the protein needs of fish for coastal communities. For the island of Java, with the largest population in Indonesia, the intensive fisheries in the Java Sea are sufficient to support domestic food needs. This Carangid fish diversity study in Java is the beginning to identify commercial fish in Indonesia, which have been exploited for a long time. In this study, identification was carried out molecularly in the Cytochrome c oxidase subunit I (COI) gene region with the universal primary set and found a great variety of Carangids fish species. Thirty-three fish specimens have been identified, indicating two suborder groups, Caranginae (31) and Scomberoidenae (2). The Caranginae suborder group is more dominated with the most types of which are Megalaspis cordyla (3), Atule mate (3), and Decapterus macarellus (4). Meanwhile, the Scomberoidinae suborder is Scomberoides commersonnianus and Scomberoides tala. This study also found two species that have the potential to be ciguatera poisoning agents that need to be watched out for (Decapterus macarellus and Selar crumenophthalmus). Food safety in the fisheries sector has received considerable attention for a long time. Fishery commodities in highly polluted habitats are among the chains in increasing heavy metals concentration and the other residual chemical compounds that may impact human health.

This study aims to evaluate the production performance of biofloc-based co-culture systems of Nile tilapia and redclaw crayfish with varying carbon–nitrogen ratios (C/N). The experiment was conducted for 80 days in plastic-lined ponds with dimensions of 1 x 1 x 0.6 m. Two biofloc systems with two C/N ratios (10 and 15), using molasses as the carbon source and a control system without molasses were compared. Mixed-sex Nile tilapia with an initial average body weight of 7.00 ± 0.25 g were stocked at a density of 30 fish m−2. After 30 days of culture, redclaw crayfish with initial average body weight of 11.50 ± 0.55 g were added to the culture system at a density of 10 crayfish m−2. There were no significant differences in total animal biomass or total weight gain between treatments (P > 0.05). The total feed and overall feed conversion ratio (FCR) differed significantly (P < 0.05) between the biofloc systems and the control. Total ammonia nitrogen (TAN), nitrite nitrogen (NO2−N) and nitrate nitrogen (NO3−N) concentrations in biofloc systems with a C/N ratio of 15 were generally lower than those of other treatments. Dissolved oxygen concentrations decreased with the increase in the culture period in (4.13–4.40 mg L−1). Based on the results of this study, it can be concluded that an increase in the C/N ratio has positive effects on the feed utilization efficiency and water quality in biofloc-based tilapia–redclaw crayfish co-culture systems.

In an organization or company, employees as Human Resources (HR) are seen as a person's ability to do work within the company, especially when viewed from the portion to help the company achieve its goals. One form of good Human Resources (HR) management is to provide training for employees in the company in order to improve the knowledge and skills of employees. PT Hinai Daiki as a company engaged in the export garment sector in Tasikmalaya conducts training in the form of sending apprentices abroad. Problems that occur So far, the determination of prospective overseas internships at this company is not as expected, because the selection is direct without using a decision support system, causing inaccurate assessments and not on target. This study aims to apply the MOORA (Multi-Objective Optimization on the basis of Ratio Analysis) method in assisting the selection of employees who will be sent for internships abroad at PT Hinai Daiki. The MOORA method is used in the calculation process that produces output in the form of alternative employees who will be sent for internships abroad. The criteria used in this study include activeness in work, mastery of work, discipline, knowledge, teamwork, personality, mastery of language and health. Based on the research results, the MOORA method can be well applied to the decision support system for the selection of interns at PT Hinai Daiki.

The burrowing goby, Trypauchen v agina , is recorded for the first time from the Pangpang Bay of Banyuwangi, Indonesia. Types of fish T. vagina is a type that has not published in Indonesia. This fish was caught using trap net in waters Pangpang Bay, which is an essential area in Banyuwangi, East Java. The description of the morphology and fish habitat conditions shows that the region has a diversity of fish resources that need attention. This goby fish has a local name as fish bedhul picek due to the sense of sight on these fish as if it does not work. Eyes covered by skin and socket head section was not found their eyeballs. The body of the specimens is elongate and reddish-pink in fresh specimens in coloration. There is no barbel on the chin. Cycloid scales are present on the whole body except for the head. Muncar people commonly consume T.vagina . This fish has been food sources in several regions but uncommon at several local markets in Indonesia. The T.vagina inhabit at Pangpang Bay as the bay, which has the high primary productivity of these waters due to sufficient nutrient support. Enrichment of nutrient comes from the run-off land and also the input of the number of fishing activity (embankment). An earlier report said that this fish found in waters Banyu Asin, Palembang, Sumatra, Indonesia. It also confirms that the fish found in this study are also living in a mud substrate that is reasonably smooth with right mangrove conditions around the bay, which close to Alas Purwo National Park.

One disease that often attacts fish is a group of parasites or parasitic diseases, parasites are not only dangerous because they are related to their activities, but also trigger the emergence of other pathogenic organisms and cause infections. Therefore, it is necessary to take fish quarantine measures to prevent the spread of diseases carried out by fish quarantine centers. This study was conducted to determine the type of parasite that infested fish samples and determine the prevalence and intensity of fish samples. A total of 48 sample fish consisting of freshwater and seawater fish were analyzed in the laboratory of Balai Karantina Ikan, Pengendalian Mutu dan Keamanan Hasil Perikanan Surabaya II during December - January 2019, either directly or directly (ectoparasites and endoparasites). Parasitic identification was carried out visually and microscopically with an approach based on identification books. The types of parasites that we found during the study consisted of Argulus sp, Trichodina sp, Anisakis sp., Gnathostoma spinigerum, and Gnathostoma spinigerum. The highest prevalence in Scomber Scombrus with Anisakis sp. Amounting to 77.8%, mean while, the lowest prevalence and the intensity is found in Thunnus sp. The prevalence and intensity of parasites are influenced by water quality and pollution.

Budidaya ikan lele dengan sistem kombinasi akuaponik dan bioflok merupakan sistem terpadu yang dinilai efektif dan efisien. Sistem akuaponik mereduksi amonia dengan menyerap air buangan budidaya atau air limbah dengan menggunakan akar tanaman. Bioflok merupakan sistem budidaya ikan intensif yang memanfaatkan prinsip daur ulang nutrien pakan yang terbuang melalui bakterial. Tujuan dilaksanakannnya pengabdian masyarakat sebagai upaya pengenalan budidaya ikan lele dengan sistem kombinasi akuaponik dan bioflok kepada masyarakat di Desa Purwoasri, Tegaldlimo, Banyuwangi. Kegiatan dilaksanakan pada bulan Juni-Oktober 2019, terdiri dari pengenalan sistem budidaya pada masyarakat melalui sosialisasi dan pelatihan serta pendampingan pelaksanaan budidaya ikan lele dengan sistem kombinasi akuaponik dan bioflok dalam bentuk bangunan/demplot. Selanjutnya dilakukan evaluasi kepada mitra melalui pre-tes dan post-tes dan diakhiri dengan pembentukan kader. Kegiatan pengenalan sistem budidaya dilakukan kepada mitra yang terdiri dari PKK dan anggota karang taruna di desa Purwoasri sebanyak 20 orang. Berdasarkan evaluasi selama kegiatan ini berlangsung diketahui bahwa pengetahuan mitra tentang sistem budidaya meningkat hingga 75% dari evaluasi awal sebesar 40%. Selain itu, ketertarikan mitra terhadap sistem ini juga mengalami peningkatan dari 65% menjadi 89%. Hal ini menunjukkan bahwa kegiatan pengabdian masyarakat memberikan dampak positif bagi mitra.

The coral reef plays an important role in the marine ecosystem. These ecosystems are currently in decline due to a variety of factors such as irresponsible fishing, live coral capture for commercial purposes, seawater acidification, and others. Several attempts have been made to improve the situation, one of which was the transplantation method. Three Acropora species, Acropora Brueggemanni, Acropora Nobilis, and Acropora yongei, were planted at the best depth using the PVC rack method (5 meters) Tirtawangi Beach is located in Banyuwangi, East Java, Indonesia. We tracked the survival and growth of three transplanted corals on a monthly basis. A descriptive analysis was performed to determine the relationship between both and environmental parameters. The survival and growth rates of three Acropora corals transplanted at the optimal depth were discovered to be different for each species. Meanwhile, the three species' survival rates ranged from 96 to 100 percent, and their growth rates (mean SD) were 0.35 ± 0.11, 0.81 ±0.39, 0.47 ±0.15 cm.month-1, respectively. Furthermore, fragment adaptability to environmental changes is a major factor determining fragment growth, survival, and regeneration.

Grouper fish has a fast growing nature so it can be mass produced to serve market demand. The purpose of implementing field work practices is to determine the technique of raising brown-marbled grouper broodstock at the Balai Perikanan Budidaya Air Payau (BPBAP) Situbondo, East Java and to find out the problems that are often faced in the maintenance techniques of brown-marbled grouper broodstock. This research was carried out on 23 December 2019-25 January 2020. The method used is the descriptive method with data collection including primary data and secondary data. The maintenance technique for brown-marbled grouper broodstock includes several stages of activities, namely preparation of containers, procurement of broodstock and parent selection, water quality management, feeding, pest and disease control. The obstacles that exist in the maintenance technique for brown-marbled grouper broodstock are erratic weather and power outages.

Organic substances-rich floc produced from the rearing of Tilapia (Oreochromis niloticus) with biofloc technology (BFT) contains enough nutrients which can be utilized as culture medium for Daphnia magna. In this study, the utilization of the floc as a substrate in Daphnia magna culture as one of the sustainable farming system was observed. The fish rearing systems used C/N ratios of 10 and 15 that provide the biofloc in the form of deposition and suspension. Culture of Daphnia was performed in twenty water containers; each was filled with 1 L water and 10 Daphnia magna with egg sac at the temperature of 28±2 °C for 12 h in the dark condition and 12 h in the condition with light. The substrates given for the rearing was the various biofloc and chicken manure as a control. Effect of the substrates on the culture was observed for 14 days through the biofloc profile, water quality parameters (pH, temperature, DO, TAN, nitrite, nitrate and BOD) and the responses of the Daphnia. As results, it can be seen that the utilization of the substrates from the deposition with C/N ratio of 15 gave the best impact on the D. magna with the total individuals of 97, the number of neonates was 75 and the number of females was 17.

Snakehead fish (Channa striata) is a type of freshwater fish that has the potential to be developed because of its high economic value. Information about the reproductive biology of Channa striata is still limited, so it is necessary to carry out reproductive studies for its future development. Research on the aspects of reproductive biology such as the comparison of the weight of the broodstock (female) to the number of fecundities was carried out descriptively in December - January 2020. This study used three categories of broodstock parent size with different weights, namely (P1): 155-350 grams, (P2): 400-700 grams, (P3):> 700-1200 grams. The results showed that the number of eggs produced sequentially, namely (P1): 75,62.57 ± 1,106 eggs, (P2): 9,821.17 ± 628 eggs, (P3): 11,103.80 ± 2,307 eggs. This study concludes that the number of eggs produced increases with the larger size of the broodstock used. However, it was found that a consistent number of eggs were found at the parent size between 400 - 700 grams.

Water quality assessment can be carried out through physical, chemical, and biological analyses. Phytoplankton is a biological microorganism that is usually used as indicators to assess surface water quality, specifically primary productivity. Bajulmati Reservoir is located in Banyuwangi, East Java, which functions as irrigation for agricultural and fisheries land. The purpose of this study was to analyze the productivity of reservoir waters based on phytoplankton abundance. The method used is purposive sampling with four sampling point stations from the entire reservoir area. The phytoplankton found were nine genera, consisting of 5 genera from the Cyanophyceae class, and one genus from each class, namely the Chlorophyceae, Bacillariophyceae, Euglenophyceae, and Dinophyceae classes. The productivity of the Bajulmati reservoir is included in the eutrophic category, with an average abundance of phytoplankton of 15.215 ind.L−1. Meanwhile, the diversity index shows that the distribution of stable individuals and communities is low, namely 0.87. Despite this, the Cyanophyceae class is dominating with the dominance index was 0.52.