Penelitian ini bertujuan untuk menganalisis kandungan vitamin C rotifer, artemia dan larva rajungan setelah diperkaya dengan vitamin C dan menganalisis pemberian vitamin C terhadap sintasan, rasio RNA/DNA, kecepatan metamorfosis dan ketahanan stres larva rajungan stadia zoea. Serta menentukan dosis optimum vitamin C yang menghasilkan sintasan, rasio RNA/DNA, ke-cepatan metamorfosis dan ketahanan stres larva rajungan stadia zoea yang terbaik. Penelitian ini dilaksanakan pada bulan Mei sampai Juni 2020 di unit pembenihan kepiting dan rajungan Balai Perikanan Budidaya Air Payau (BPBAP) Takalar. Analisis Rasio RNA/DNA dilakukan di Laboratorium Uji Fisika Kimia BPBAP Takalar. Rancangan penelitian menggunakan Rancangan Acak Lengkap (RAL). Hasil penelitian menunjukkan bahwa pemberian vitamin C pada rotifer dan artemia dapat meningkatkan kandungan rotifer, artemia dan larva rajungan. Pemberian vitamin C pada rotifer dan artemia terhadap larva rajungan stadia zoea dapat meningkatkan sintasan, kecepatan metamorfosis dan ketahanan stres larva rajungan dan Dosis vitamin C 250 ppm yang terbaik pada pemeliharaan larva rajungan stadia zoea. This study aimed to analyze the content of vitamin C rotifer, artemia and small crab larvae after enriched with vitamin C and to analyze the provision of vitamin C to survival, RNA / DNA ratio, metamorphosis rate and stress resistance of crab larvae in zoea stage. Also, it aimed to determine the optimum dose of vitamin C which produces the best survival rate, RNA/DNA ratio, metamorphosis speed and stress resistance of crab larvae in zoea stage. This research was conducted from May to June 2020 in the hatchery unit of the Brackish Water Cultivation Fishery Center (BPBAP) Takalar. RNA / DNA ratio analysis was carried out at the Laboratory of Chemical Physics Testing of BPBAP Takalar. The research design used a completely randomized design (CRD). The results showed that giving vitamin C to rotifers and brine shrimp increased the content of rotifers, brine shrimp and crab larvae. Giving vitamin C to rotifers and artemia to larvae of zoea stadia crabs can increase survival, metamorphosis speed and stress resistance of crab larvae and the best dose of vitamin C 250 ppm in the maintenance of zoea stadia crab larvae.

The objective of research was to analyze the reproductive aspect of abalone (Haliotis asinina L.) which included the beginning of gonad maturity, the peak of spawning season, the comparison of male and female abalone caught in the nature, the reproductive potential, and abalone fecundity. Research was located at the waters of Tanakeke Islands, Takalar District, South Sulawesi. Method of research was field survey. Sampling stations were determined Aquatic Science and Technology ISSN 2168-9148 2013 www.macrothink.org/ast 31 based on the distribution of coral reef in the islands. Result of research indicated that male abalone reached the beginning of gonad maturity at shell length of 64.50 mm, while female abalone reached it at shell length of 64.09 mm. Abalone had spawned throughout year with two peaks of spawning season, precisely at the beginning of dry season and rainy season. The comparison of male and female abalone primes was 1:1. Abalone group with shell length of 60-70 mm contributed more than 70 % to the total reproductive potential of the population. Total fecundity of the tropical abalone at research was ranging from 255,900 to 756,200 eggs.

Maros is one of the districts in the South Sulawesi Province which is the center of fisheries business development. Maros Regency as a coastal and marine area has the potential to develop land and sea fisheries that are quite large with the largest production of fishery products in ponds as a local resource that is a type of milkfish. Milkfish from Maros Regency is an excellent product that is well known and sought after by the public both local consumers and from various regions because it has a good taste. Milkfish are mostly served in the processed form with various kinds of processed products. Diversification of processed milkfish products begins with removing the thorns that are very much found throughout the body of milkfish which is quite troublesome if consumed especially on small milkfish, namely by applying the technology of pulling thorns to produce fresh milkfish without disturbing thorns. Fresh fish without thorns is ready to be processed into various products, namely shredded milkfish products and milkfish meatballs. The products of milkfish are extracted from thorns, shredded milkfish and milkfish meatballs packed in vacuum packaging so that they can last longer and can be used as regional excellence products from Maros Regency.

Penelitian ini bertujuan untuk mengetahui faktor oseanografi dan tingkat kesesuaian lokasi perairan Pulau Sembilan dalam mendukung budidaya rumput laut Kappaphycus alvarezii.  Penelitian ini dilaksanakan pada Bulan Juni – Oktober 2019.   Penentuan lokasi budidaya  rumput laut,  dipilih berdasarkan kriteria sengaja ( purposive sampling ).  Hasil penelitian memperlihatkan kisaran nilai: a) Parameter fisika terdiri atas: (1) arus  5 – 30 cm/dtk, (2) suhu     28,7 - 32 °C (3) kedalaman sebesar 2 m - 10 m, (4) kecerahan 1 m - 3,5 m, (5) substrat dasar perairan karang, berpasir (b) Parameter Kimia terdiri dari: (1) salinitas perairan 30 ppt - 32,8 ppt, (2) pH  7,37 - 9,31 (3) oksigen terlarut 4,16 - 11,08 mg/l  (4) carbon dioksida 2 - 6 mg/l (5) fosfat 0,044 mg/l – 1,185 mg/l, (6) nitrat 0,046- mg/l- 1,104 mg/l. c) Parameter biologi terdiri atas: organisme pengganggu berupa ikan dan lumut. Hasil skoring menunjukkan untuk ketiga stasiun dapat dilakukan kegiatan budidaya Kappaphycus alvarezii yaitu pada Pulau Kambuno, Batanglampe dan Kodingare.   This study aims to determine oceanographic factors and the suitability of the waters of the nine islands in supporting seaweed cultivation Kapphaphycus alvarezii.  The research was conducted in June-october 2019.  Determination of a proposed seaweed cultivation area, was conducted bu using conformity criterias based on the results matrix scoring and weighting. The results showed a range of values: a) physical parameters consist of (1) the flow velocity of  5 cm/s to 30  c m/s (2) water temperature      28,7 ºC to 32 ºC, (3) the depth of 2 m to 10 m, (4) brightness of 1 m to 3,5 m, (5) water bottom material types include: sand and coral, b) Chemical parameters consist of:  (1) salinity waters 30 ppt to 32.8 ppt,   (2) pH 7,37 to 9.31, (3) dissolved oxygen 4,16 to 11,08 ppm (4) carbondioksida 2 to 6 ppm ,(5) phosphate 0.044 mg/l to 1.104 mg/l, (4) nitrate 0,046  mg/l to 1.104 mg/l. c) Biological parameters consist of disturbing organism such as fish and mosses.  Scoring results show for the three station can be used for farming Kappaphycus alvarezii activities in the islands Kambuno, Kodingare and Batanglampe.

Perairan Sungai Tallo mengalami tekanan dari lingkungan di sepanjang aliran sungai berupa pemukiman, pertambakan, dan pertanian. Disamping itu, beberapa perusahaan diduga melakukan pencemaran dengan membuang limbah cair serta bahan berbahaya dan beracun di sepanjang aliran Sungai Tallo tanpa melalui proses pengolahan. Penelitian ini bertujuan untuk menganalisa status pencemaran logam berat timbal dan cadmium di perairan Sungai Tallo menggunakan bioindikator ikan nila. Penelitian ini dilaksanakan pada bulan November 2019-Februari 2021, di perairan Sungai Tallo, Kota Makassar. Pengabilan sampel air dan ikan nila berupa organ hati dan insang dilakukan di tiga stasiun Keramba Jaring Apung, kemudian dianalisis di Laboratorium Balai Besar Industri Hasil Perkebunan Makassar. Parameter kualitas air yang diukur yakni parameter fisika meliputi suhu, kekeruhan, kecerahan, kecepatan arus dan kedalaman, sedangkan parameter kimia meliputi pH, oksigen terlarut, salinitas, Biochemical Oxygen Demand, amoniak, nitrat, timbal dan kadmium. Selanjutnya parameter biologi organ ikan nila, yaitu organ hati dan insang. Data yang dianalisis berupa indeks pencemaran lingkungan dan biokonsentrasi faktor. Hasil penelitian menunjukkan bahwa parameter yang masuk ke dalam kategori cemar ringan yaitu oksigen terlarut, logam berat timbal, dan kadmium, cemar sedang yaitu suhu dan Biochemical Oxygen Demand, serta cemar berat yaitu amoniak. Sedangkan kategori baik yaitu kedalaman, kecepatan arus, kecerahan, pH, dan salinitas. Nilai biokonsentrasi faktor tertinggi logam berat timbal pada organ insang yaitu umur pemeliharaan satu bulan dan yang terendah umur pemeliharaan empat bulan. Nilai biokonsentrasi faktor logam berat kadmium pada organ insang dan hati memiliki nilai yang sama untuk semua waktu pemeliharaan. The waters of the Tallo River experience pressure from the environment along the river in the form of settlements, aquaculture, and agriculture. In addition, several companies are suspected of polluting by disposing of liquid waste as well as hazardous and toxic materials along the Tallo River without going through a processing process. This study aims to analyze the pollution status of lead and cadmium heavy metals in the waters of the Tallo River using tilapia bioindicators. This research was conducted in November 2019-February 2021, in the waters of the Tallo River, Makassar City. Water samples and tilapia in the form of liver and gills were carried out at three floating net cages stations, then analyzed at the Makassar Plantation Product Industrial Center Laboratory. The water quality parameters measured were physical parameters including temperature, turbidity, brightness, current speed and depth, while chemical parameters included pH, dissolved oxygen, salinity, Biochemical Oxygen Demand, ammonia, nitrate, lead and cadmium. Furthermore, the biological parameters of tilapia organs, namely the liver and gills. The data analyzed in the form of environmental pollution index and bioconcentration factors. The results showed that the parameters that fall into the category of light pollutants are dissolved oxygen, heavy metals lead, and cadmium, moderate pollutants are temperature and Biochemical Oxygen Demand, and heavy pollutants are ammonia. While the good categories are depth, current velocity, brightness, pH, and salinity. The highest bioconcentration value of lead heavy metal in the gills was one month of rearing age and the lowest was four months of rearing age. The value of the heavy metal factor cadmium bioconcentration in the gills and liver had the same value for all rearing timesdecisions.