Vaname shrimp is one of the fishery products that are expected to produce foreign exchange for the country besides tiger shrimp.  One factor that can affect the growth and the production of vaname shrimp culture is dense stocking. The research was conducted in October-December 2016 at the Balai Benih Ikan Pantai (BBIP) Ghonebalano, aims to determine the effect of different stocking density on the growth and survival of vaname shrimp.  The research was using Completely Randomized Design with three treatment levels of density, i.e. treatment A = 10 individuals per container, treatment B = 15 individuals per container and treatment C = 20 individuals per container and three replications.  The results showed that the highest growth was obtained in treatment A which was 1,563 g/individuals, compared with treatment B (1.189 g/individuals) and C treatment (0.834 g/individuals).  Survival rate in treatment A is 80.00%, B treatment equal to 75,56% and treatment C equal to 70,00%.  Analysis of variance at 95% confidence level (α0.05) showed that the different density had a significant effect on growth, but had no significant effect on survival rate of the vaname shrimp larvae.

The study aimed to determine the growth and survival of Litopenaeus vannamei shrimp with the application of probiotics to different stocking densities.  The study was conducted from May to June 2018 at the Balai Benih Ikan Pantai (BBIP) Ghonebalano, Duruka District, Muna Regency, using a Completely Randomized Design (CRD) with three levels of solid stocking treatment namely treatment A is 18 individu per container, treatment B is 24  individu per container and treatment C is 30  individu per container with three replications.  Data analysis using Variance Analysis (ANOVA) at the confidence level of 95% (α 0.05).  The results showed that the highest daily growth was obtained at 24 individual densities of 5.88% per day, compared to 18 individual densities of 5.86% per day and 30 individual densities of 5.74% per day.  The highest absolute growth is obtained at 24 individual density of 2.43 g per individu, then 18 individual density of 2.15 g per individual, and the lowest at 30 individual density of 2.02 g per individual.  Survival at a density of 18 individual and a density of 24 individual at 88.89%, while a 30-ind density of 86.67%.  Analysis of variance (α 0.05) showed that the application of probiotics to different stocking densities had no significant effect on the daily growth rate of vannamei shrimp (p<0.939), absolute growth of vannamei shrimp (p<0.080), and survival of vannamei shrimp (p<0.744).

ABSTRAK Penelitian dilakukan di pesisir Pulau Buton Kecamatan Wakorumba KabupatenMuna dengan tujuan untuk menganalisis nisbah kelamin dan ukuran pertama matang gonad kerang lumpur. Data nisbah kelamin dianalisis menggunakan Metode Chi-square (X 2 ) dan ukuran pertama matang gonad dianalisis menggunakan Metode Spearmen-Karber (Udupa, 1986). Nisbah kelamin kerang lumpur Anodontia edentula Linnaeus, 1758 berdasarkan waktu pengambilan sampel berada pada proporsi seimbang (nilai X 2 19,6447>4,3027), sementara menurut stasiun pengamatan (plot) berada pada proporsi yang tidak seimbang dimana jenis jantan lebih banyak dibanding jenis betina (nilai X 2 0,7185>4,3027). Ukuran pertama matang gonad kerang lumpur Anodontia edentula Linnaeus, 1758 jenis kelamin jantan memiliki rata-rata panjang cangkang sebesar 38,60mm (38,14-39,06 mm), sementara jenis kelamin betina mencapai rata-rata panjang cangkang sebesar 34,14mm (33,56-34,73 mm). Kerang lumpur di pesisir Pulau Buton, ukuran pertama matang gonad sebenarnya untuk jenis kelamin jantan sebesar 39,7 mm dan jenis kelamin betina sebesar 38,0 mm.

The study was conducted aiming to test different fertilizer doses on the optimal growth rate of Eucheuma cottonii seaweed. The study was conducted from July to August 2016 in the waters of Ghonebalano Village, Duruka District, Muna Regency, Southeast Sulawesi. The study used NPK fertilizer with the composition of the element nitrogen (N) 15%, phosphate (P2O5) 15%, and potassium (K2O) 15%. The study used a Randomized Block Design (RBD) with 3 (three) levels of fertilizer doses and 3 (three) groups so that the number of experimental units was 9 (nine) units. While the treatments tested in the study were treatment A (without fertilizer/control), treatment B (fertilizer dose 1g/liter), and treatment C (fertilizer dose 2 g/liter). The results showed that the difference in fertilizer dose significantly affected the growth rate of Eucheuma cottonii seaweed. A dosage of 2 grams/liter of fertilizer gives the best rate of growth of Eucheuma cottonii seaweed while the water quality at the study site shows that it is still in the optimal range for the growth of Eucheuma cottonii seaweed.

The user has requested enhancement of the downloaded file.