Rochmady
Coastal And Isle Research Group, College Of Wuna Agriculture, Raha Pusat Studi Pesisir Dan Pulau-Pulau Kecil, Sekolah Tinggi Pertanian Wuna, Jl. Letjend. Gatot Subroto Km.7 Lasalepa Raha 93654

Published : 86 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Nisbah kelamin dan ukuran pertama matang gonad kerang lumpur (Anodontia edentula, Linnaeus 1758) di pesisir Lambiku, Kecamatan Napabalano Kabupaten Muna Rochmady Rochmady; Sharifuddin Bin Andy Omar; Lodewyck S Tandipayuk
Agrikan: Jurnal Agribisnis Perikanan Vol 6, No 1 (2013)
Publisher : Sangia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (818.238 KB) | DOI: 10.29239/j.agrikan.6.1.1-9

Abstract

Penelitian dilakukan di pesisir Lambiku dengan tujuan untuk menganalisis nisbah kelamin dan ukuran pertama matang gonad kerang lumpur. Data dianalisis untuk mengetahui nisbah kelamin dan ukuran pertama matang gonad kerang lumpur Pulau Tobea dengan menggunakan analisis chisquare (χ2) dan Metode Spearmen-Karber (Udupa, 1986). Hasil analisis nisbah kelamin dengan menggunakan chi-square berdasarkan stasiun pengambilan sampel, waktu pengambilan dan tingkat kematangan gonad (TKG) menunjukkan nisbah kelamin jantan kerang lumpur cenderung sebanding dengan jenis kelamin betina. Hal ini ditunjukkan dengan nilai chi-square hitung=chi-square tabel baik berdasarkan waktu pengambilan sampel (0,6770), berdasarkan tingkat kematangan gonad (TKG) (2,7462), berdasarkan stasiun pengamatan (3,3673). Ukuran pertama matang gonad kerang lumpur, jenis kelamin jantan mencapai ukuran rata-rata panjang cangkang sebesar 55,03 mm, pada kisaran panjang cangkang sebesar 54,47-55,60 mm. Untuk jenis kelamin betina mencapai ukuran pertama matang gonad dengan rata-rata panjang cangkang sebesar 54,93 mm, pada kisaran panjang cangkang sebesar 54,48-55,38 mm. Kerang lumpur di pesisir Lambiku, ukuran pertama matang gonad sebenarnya untuk jenis kelamin jantan mencapai ukuran panjang cangkang sebesar 50,2 mm dan jenis kelamin betina mencapai ukuran panjang cangkang sebesar 51,0 mm.
Editorial - Publikasi Perdana versi Online (daring) Rochmady Rochmady
Agrikan: Jurnal Agribisnis Perikanan Vol 10, No 2 (2017): Edisi Perdana Publikasi Online
Publisher : Sangia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.10.2.IFC

Abstract

Pendugaan Stok Cumi-cumi Loligo sp. di Perairan Kabupaten Pangkajene dan Kepulauan, Sulawesi Selatan, Indonesia (Stock Assessment of Squid Loligo sp. in Pangkajene and Kepulauan Regency, South Sulawesi, Indonesia) Susiana Susiana; Rochmady Rochmady
Jurnal Pengelolaan Perairan Vol. 1 No. 1 (2018)
Publisher : Program Studi Manajemen Sumber Daya Perairan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objectives of the study were to analyze the sustainable yield level and the optimum catching of the squid Loligo sp. in the waters of Pangkajene and Kepulauan Regency, South Sulawesi, Indonesia. The study was conducted from April to May 2013 by collecting production data and catching efforts on squid by type of catch and fishing gear, the period of 2005-2010. Data obtained from the Department of Marine and Fisheries of South Sulawesi Province, Indonesia. Production data and catching efforts are standardized, then continued potential sustainability estimation analysis using the Schaefer and Fox Model. Data analysis was done by comparative descriptive. The results showed that squid in Pangkajene and Kepulauan waters based on Schaefer model approach was obtained by estimation of sustainable catch result 155.2326 tons per year, estimation of optimum catching effort (Fopt) 12,140.8780 trips per year. Based on Fox model approach shows the estimated value of sustainable catch is 131.6589 tons per year, estimation of optimum catching effort (Fopt) is 9,255.0821 trips per year. Based on this, the catching of squid in Pengkajene and Kepualaun waters has not experienced over fishing.Keywords: catch, MSY, Foptimum, FPI, effort standard.
Condition of mangrove in the waters of Pangkil Village, Teluk Bintan District, Bintan Regency Edo Edo; Susiana Susiana; Mario Putra Suhana; Rochmady Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 6, No 1 (2022)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.6.1.1-8

Abstract

Pangkil Village is one of the areas located on the coast of Bintan Island, Teluk Bintan District. This island has an aquatic ecosystem with abundant marine resources, one of which is the mangrove ecosystem. Mangroves are the main supporting ecosystem for life activities in coastal areas that play an important role in maintaining the balance of environmental biological cycles. This study aims to determine the condition, distribution and density level of mangroves in the waters of Pangkil Village. This research was conducted in February-March 2021. The research method is purposive sampling, which means that the research station points are chosen intentionally based on the consideration of the condition of the existence of mangroves or the density of mangroves. The research station points were determined as many as 8 stations, at each station consisting of transects and at each transect consisting of 3 sample plot plots (Transect Line Plot). The density level data was collected using a line transect measuring 10x102 which was drawn from the sea to the land and the distribution of mangroves using lansat-8 imagery. The level of mangrove density in the waters of Pangkil Village is still quite good. The results of the research on the level of mangrove density in the waters of Pangkil Village are classified as good with the distribution of mangrove areas in the waters of Pangkil Village covering an area of 40.23 ha, with an average density level of 1,033 ind/ha per station to 1,733 ind/ha. with medium and solid status based on the Decree of the Minister of the Environment No. 201 year 2004.
Conditions of sex ratio and growth patterns of craft (Portunus pelagicus) in the waters of Kawal village, Bintan Regency, Riau Island Province Hardi Wiradinata; Susiana Susiana; Wahyu Muzammil; Rochmady Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 6, No 1 (2022)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.6.1.9-14

Abstract

Business Crab (Portunus pelagicus) Kawal Village waters are waters located in the Gunung Kijang area, Bintan Regency, Riau Islands Province. High market demand for crab fishery commodities that triggers excessive exploitation so that it can have an impact on the sustainability of crab resources. This study aims to determine the condition of the sex ratio and the pattern of crab growth in the waters of Kawal Village, Bintan Regency. The method used in this study is a survey method. The sampling technique was carried out using a random census, in which the researcher immediately went down to the field to take a sample of 176 crabs. The results showed a good sex ratio for female crabs at 52% and male crabs at 48%, which has calculated the Chi-square test which between females and males has a balanced ratio, which results in: X2 count of 33, 2 while X table is 74,975 which if X2 count < X table: male and female sex ratio is balanced. The growth pattern of both female and male crabs in the waters of Kawal Village, Bintan Regency has a negative allometric character where the growth pattern of carapace width is greater than weight growth.
Probiotic aplication for growth and survival rate of vaname shrimp Litopenaeus vannamei with different density Abdul Rakhfid; Wa Ode Halida; Rochmady Rochmady; Fendi Fendi
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 2, No 2 (2018)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.2.2.41-48

Abstract

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).
The use of probiotic for growth and survival of milkfish (Chanos chanos Forskal) Abdul Rakhfid; Wa Ode Nanny Kulsum; Fendi Fendi; Mosriula Mosriula; Muhammad Bakri; Karyawati Karyawati; Alimin Alimin; Rochmady Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 4, No 2 (2020)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.4.2.83-89

Abstract

Milkfish cultivation in Muna Regency has not yet developed optimally, allegedly due to poor water circulation. Internal solution that can be done is the use of probiotics in water maintenance media. The aim of this study was to determine the effect of adding proiotics to media water with different doses on the growth and survival of milkfish (Chanos chanos Forskal), carried out in May to June 2019 at the Gonangkalo Beach Fish Seed Center (BBIP), Gonebalano, Duruka District, Muna Regency. The study used a complete randomized design (CRD) with three probiotics namely A 10 mL treatment per container, 20 mL treatment B per container and 30 mL C treatment per container. Data were analyzed using Variance Analysis (ANOVA) at 95% confidence level (α 0.05). The results showed that the highest daily growth rate was obtained in Treatment B at 5.84±0.16% per day followed by Treatment A at 5.71±0.23% per day and Treatment C at 5.42±0.10% per day. The highest absolute growth of milkfish was obtained in Treatment B at 8.24±0.28 g per individual and the lowest was in Treatment C at 7.95±0.0.33 g per individual, Continuation in Treatment A and B 83.33±5,77%, while in Treatment C 80.00±10.00%. Analysis of variance (α 0.05) showed that the use of probiotics with different doses significantly affected absolute growth (p>0.011) but did not significantly affect the daily growth rate (p<0.063) and survival (p<0.850) of milkfish
Pengaruh pemberian pupuk anorganik (NPK+Silikat) dengan dosis berbeda terhadap kepadatan Skeletonema costatum pada pembenihan udang windu Fitriani Fitriani; Fendi Fendi; Rochmady Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 1, No 1 (2017)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.1.1.11-18

Abstract

Skeletonema costatum one type of phytoplankton commonly cultivated in the shrimp hatchery (Penaeus monodon Fabr.). Plankton S. costatum has a high nutrient content, small size is used as a natural feed of tiger shrimp larvae, especially in the zoea to mysis stadia. The aim of this research is to know the effect of inorganic fertilizer (NPK+Silicate) with dosage of 5 ppm, 15 ppm and 20 ppm to the density of S. costatum on tiger shrimp. The study was conducted for 2 weeks in July 2011 at UPTD Balai Benih Ikan Pantai Muna, Ghonebalano village, Duruka district, Muna regency, Southeast Sulawesi. The experiment used a 3-liter volume on stoples, a salinity water of 20 ppm. The study used Completely Randomized Design (RAL) with NPK and Silicate treated fertilizer with 5 ppm, 10 ppm (control), 15 ppm and 20 ppm with 3 replications. The initial density of S. costatum was 10,000 cells mL-1 per unit. The data were analyzed by ANOVA using IBM SPSS Statistic 22. The results showed that inorganic fertilizer application (NPK+Silicate) with different dose gave a very real effect on the density of S. costatum cells. Treatment of 15 ppm fertilizer dosage was significantly different with control and other treatment, average cell density was 121,000 cells mL-1. Based on cell growth, the 15 ppm fertilizer dosage has the best growth with an average cell increase of 1,2705 cells mL-1 day-1.
The level of viability of milkfish (Chanos chanos) in transportation containers with different temperatures Fendi Fendi; Sarfiani Sarfiani; Karyawati Karyawati; Rochmady Rochmady; Abdul Rakhfid
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 2, No 2 (2018)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.2.2.61-65

Abstract

The transportation of milkfish (Chanos chanos) is an important factor determining the survival of milkfish (Chanos chanos). The hatchery is not always close to the location of the aquaculture pond, so the treatment in transportation using land and sea vehicles to arrive at the aquaculture site/pond. This study aims to determine the effect of different temperatures in milkfish (Chanos chanos) transportation to obtain a good temperature in milkfish (Chanos chanos) transportation. The research method uses a completely randomized design (CRD) with three treatments and three replications. The treatments given were treatment A (temperature 15oC), treatment B (temperature 18oC), and treatment C (temperature 21oC). While the time taken for each treatment is 14 hours. The results showed that the survival of milkfish (Chanos chanos) were in the range of 90.04% (treatment A), 95.04% (treatment B), and 88.67% (treatment C), where the highest survival in treatment B is 95.04%.
Editorial - Publikasi Perdana Rochmady Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 1, No 1 (2017)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.1.1.IFC

Abstract