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Dony Prasetyo
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INDONESIA
Indonesian Journal of Tropical Aquatic
Published by Universitas Muhammadiyah Malang
ISSN : -     EISSN : 26224836     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Indonesian Journal of Tropical Aquatic (IJOTA) is open access publishes papers two times a year in February and Augst. IJOTA will publish the research results useful for the sustainability of fisheries. IJOTA is a scientific journal that discusses the results of research in science, technology, marine and freshwater fisheries that have not been published. Articles should be created in a language that is easily understood by non-specialist readers in the topic of the article itself, but interested in research. This scientific article includes the results of research on Aquaculture (Fish Nutrition, Fish Health and Diseases, Water Quality, Fish Genetics Improvement and Breeding, Fisheries Engineering and Biotechnology), Aquarium Sciences, Aquatic Ecology (Marine, Brackish, Freshwater), Conservation of Aquatic Resources and also Coastal Management. A journal script should be written in English.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 98 Documents
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Efektifitas Sistem Transportasi Ikan Koi (Cyprinus carpio) Ukuran Benih Menggunakan Sistem Basah, Semi Basah, dan Kering Muhammad Jurais Akasah; Anis Zubaidah; Ganjar Adhywirawan Sutardjo
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.13173

Abstract

Ikan koi (Cyprinus carpio) adalah komoditi ikan hias yang cukup banyak popular dikalangan penggelur hobi ikan hias baik pasar luar maupun dalam negeri. Akan tetapi distribusi wilayah budidaya banyak berporos pada daerah Jawa Timur membuat petani kesulitan dalam hal pendistribusian ikan menuju daerah lain baik dalam pulau dan luar pulau Jawa. Tujuan penelitian ini untuk mengetahui sistem yang paling efisien diantara sistem basah, semi basah, dan kering untuk transportasi benih ikan koi. Penelitian ini telah dilaksanakan selama 36 hari di Rumah ikan koi Jl KH. Asyari no 96 Bondowoso. Alat yang dipergunakan yaitu timbangan digital, batu aerasi, selang aerasi, thermometer, DO meter, pH Universal, kamera, tabung oksigen dan blower. Bahan-bahan yang digunakan antara lain benih ikan koi ukuran 5-7 cm 60 ekor, plastik kemas dan kertas label. Metode penelitian yang digunakan yakni metode eksperimen dengan pola Rancangan Acak Lengkap (RAL) dengan 3 perlakuan sistem berbeda dan 2 kali ulangan pada ikan ukuran 5 cm yaitu Sistem basah menggunakan air sebanyak 7-8 liter, semi basah menggunakan air 5 liter dan kering tidak menggunakan media air dan digantikan dengan busa yang dibiarkan lembab pada dasar kantong. Analisis data menggunakan Anova (P>0,05) dan tidak dilanjutkan dengan Uji Beda Nyata. Hasil Penelitian menunjukkan bahwa Sistem kering media yang digunakan busa basah mengalami kematian tertinggi dibandingkan dengan sistem basah dan semi basah sedangkan untuk pengamatan kualitas air dilakukan sebelum pengangkutan dan selama pemeliharaan hasil dari kualitas air tersebut mempengaruhi faktor pemeliharaan yang terjadi pada sistem kering perlakuan 1 hari ke 3 dan 4 dengan total 7 ekor. Kesimpulan penelitian ini transportasi tertutup dengan sistem basah memiliki keunggulan efektifitas dengan nilai survival rate 90%.
ANALISIS FAKTOR – FAKTOR PRODUKSI BUDIDAYA UDANG VANAME (Litopenaeus Vannamei) SKALA SEMI INTENSIF di KECAMATAN TLANAKAN, KABUPATEN PAMEKASAN, JAWA TIMUR Hamisul Fuadi; Ganjar Adhywirawan Sutardjo; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.13373

Abstract

Penelitian ini bertujuan untuk mengetahui besaran produksi budidaya udang vaname di Kecamatan Tlanakan, Kabupaten Pamekasan, Jawa Timur dan menganalisis faktor – faktor yang mempengaruhi produksi budidaya udang vaname skala semi-Intensif di Kecamatan Tlanakan, Kabupaten Pamekasan, Jawa Timur. Penelitian ini dilakukan selama tiga puluh hari di Kecamatan Tlanakan, Kabupaten Pamekasan, Jawa Timur. Metode penelitian dilakukan secara survey dan pengumpulan data melalui observasi Langsung. Data dikumpulkan melalui wawancara, kuesioner dan pengamatan langsung. Regresi linier berganda digunakan untuk menganalisis data. Hasil penelitian menunjukkan bahwa faktor – faktor yang mempengaruhi produksi Vannamei adalah Padat Penebaran, Pakan, Kincir Air, dan Luas Lahan. Berdasarkan tabel ANOVA dapat dilihat bahwa hasil signifikansi sebesar .000 < 0.05 sehingga dapat disimpulkan varibel  berpengaruh signifikan terhadap tingkat produksi udang vannamae. Hal ini juga dapat dilihat dari hasil perhitungan uji  dimana didapat hasillebih besar daripada  tabel yaitu 500.724 > 0.4973. sehingga dapat disimpulkan bahwa variabel independen dalam penelitian ini berpengaruh secara nyata terhadap variabel dependen (Produksi Udang).
POLA PERTUMBUHAN DAN FAKTOR KONDISI KERANG BULU (Anadara pilula) DI PERAIRAN DESA KALIREJO, PASURUAN, JAWA TIMUR Yovicta Anastasya Nadin; Dony Prasetyo; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 8 No. 1 (2025): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v8i1.13438

Abstract

One species of the genus Anadara, used as an alternative food source, is the fur shells (Anadara pilula). The purpose of this research is to analyze the growth pattern, condition factor, and the condition index of fur shells (Anadara pilula) in the waters of Kalirejo village, Pasuruan East Java. This research was conducted for three months. Samples of fur shells used as much as 200 each month. Long relationship weight is analyzed using regression analysis. The results showed that the value of B < 3 indicated a negative alometry growth pattern. The value of condition factor in each month is 1.040026, 1.044695, and 1.070018926, this indicates that fur shells have a less flat body shape. As for the value of the condition index in each month, namely 0.334421, 0.512482, and 0.34303959, it indicates that the shell condition index feathers have a value of < 2.5 which means the fur shells belong to the skinny category. Condition factor values and condition indices can be influenced by factors such as Reproduki process, environmental condition, and food availability.
IMPROVEMENT HATCHING AND QUALITY NAUPLI THROUGH THE PROVISION OF FRESH FEED DIFFERENT IN FEMALE PARENT SHRIMP VANAME ( LITOPENAEUS VANNAMEI ) A MANUSCRIPT PUBLICATION Wahyu Parmana Saputra; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6053

Abstract

Fresh natural feeds such as marine worms, squid, and oysters are rich sources of amino acids, proteins, and essential fatty acids, including docosahexaenoic acid (DHA), arachidonic acid (AA), and eicosapentaenoic acid (EPA), which are important for shrimp broodstock reproduction and seed production. Marine worms, in particular, contain a high protein content of approximately 56.29%. This study aims to evaluate the effects of different fresh feed types on the hatching rate (HR) of eggs and the quality of nauplii produced by female broodstock of Pacific white shrimp, Litopenaeus vannamei. The study employed an experimental method using a Completely Randomized Design (CRD). Five feeding treatments were tested with three replicates each: marine worms, squid, oysters, a combination of marine worms and oysters, and commercial pellet feed as the control. Data were analyzed using Analysis of Variance (ANOVA), followed by the Least Significant Difference (LSD) test to determine significant differences among treatments. The results showed that different types of fresh feed significantly affected egg hatching rate. The highest hatching rate was obtained from broodstock fed marine worms, reaching 80%, which corresponded to approximately 124,630 successfully hatched larvae. Fresh feed type also had a highly significant effect on nauplius quality, as indicated by developmental stage progression at 38 hours after hatching. Broodstock fed marine worms produced nauplii that reached an average developmental stage of Nauplius VI, indicating superior larval quality compared with the other treatments. Water quality parameters during broodstock maintenance remained within acceptable ranges, with temperature ranging from 29–31°C, dissolved oxygen from 5.7 mg L⁻¹, pH at 8.0, and salinity at 31 ppt. In conclusion, the intensive use of fresh marine worms as broodstock feed can significantly improve egg hatching rate and enhance nauplius quality in Pacific white shrimp (L. vannamei).
EFFECT OF ADDITION OF GROWTH REGULATOR SUBSTANCE CONCENTRATION ON THE GROWTH Tetraselmis chuii CULTURE IN LABORATORY SCALE Diki Restu Setiawan; Ganjar Adhywirawan Sutarjo; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6543

Abstract

Tetraselmis chuii is one type of phytoplankton that can be used as a natural food source. According to FAO-UN (2016) Tetraselmis chuii has 83,400% protein content, 32,500% carbohydrate and 45,700% lipid. Higher than Chaetoceros gracili, Nannochloropsis oculata, Dunaliellatertiolecta and Isochrysis galbana. In cultured phytoplankton nutrient composition of the culture medium was very instrumental in the growth. Microalgae growth with culture can reach optimum by mixing sea water with nutrients that are not contained in the sea water. Related to this, various efforts have been made in an effort to increase the growth of natural feed, both cultivation methods and the addition of various growth substances. One substance that has the potential to increase the growth of natural feed is the use of growth hormones to increase the growth of natural feed, namely through population density, he application form is by adding growth regulators. This research was carried out at the Natural Feed Laboratory at the Center for Aquaculture of Sea Water Fisheries, Situbondo. This study used Completely Randomized Design (CRD) yanang cultured laboratory scale with 7 treatments and 4 repetitions. The treatment in this study was the administration of 2.4-D-Acid Growth Regulating Substances with different doses. The main parameters used include growth measurements by calculating the density and growth rates Tetraselmis chuii. Furthermore, the data were analyzed using ANOVA followed by LSD test. The addition concentration of plant growth regulator effect on cell density and growth rate Tetraselmis chuii culture laboratory scale. Provision of plant growth regulator with konssentrasi 5 ml + 1 ml Walne produce the highest density of 2.323125 cells/ml and a maximum growth rate that is 173 269 cells/ml/day.
Effect of Salinity Differences for Growth Chlorella sp. on the Laboratory Scale Ais Anantama Wibowo; Hariyadi Hariyadi; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.6608

Abstract

Chlorella sp. growth is dependent on environmental conditions. One of environmental condition affect the growth of Chlorella sp. is salinity. Salinity can affect the growth of Chlorella sp. because salinity affects the osmosis pressure on the cell wall of Chlorella sp. in the absorption of nutrients in the culture media. This study aims to determine the effect of different salinity on the growth of Chlorella sp. This study was conducted on laboratory scale using experimental methods. This research used Walne fertilizer on culture media were given Chlorella sp. as many as 100,000 cells / ml in every treatment. This study uses 4 treatments and 3 repetitions. The treatment in this study with salinity differences, namely salinity 15 ppt, 20 ppt, 25 ppt and 30 ppt. Chlorella sp. growth data every day obtained from the calculation of the sample Chlorella sp. use haemocytometer. The calculation data obtained is then analyzed using anava one factor data. The results showed that differences in salinity had no effect on the growth of Chlorella sp. The best salinity for the growth of Chlorella sp. is at 15 ppt salinity with the number of Chlorella sp cells. at peak growth as much as 340 × 104 cells / ml, followed by treatment B salinity 20 ppt as much as 339.33 × 104 cells / ml, then treatment D salinity 30 ppt as much as 270.58 × 104 cells / ml, and treatment C 25 salinity as much as 266.83 × 104 cells / ml. Salinity of 15 ppt, 20 ppt, 25 ppt, and 30 ppt can be used for cultivation Chlorella sp.
THE EFFECT OF DIFFERENT VALUE CONCENTRATION ON SPIRULINA PLATENSIS TOWARD THE BRIGHTNESS OF COLORS ON GOLDFISH (CARASSIUS AURATUS) Sary Astuty Aceh; Riza Rahman Hakim; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.7313

Abstract

Body coloration is one of the most important quality attributes determining the ornamental value of goldfish (Carassius auratus). Since fish are unable to synthesize carotenoids, dietary supplementation with natural carotenoid sources is required to enhance pigmentation. Spirulina platensis is a microalga rich in carotenoids that has the potential to improve fish coloration. Therefore, this study aimed to evaluate the effect of different concentrations of Spirulina platensis meal in feed on the color enhancement of goldfish. The study employed an experimental method using a Completely Randomized Design (CRD) consisting of six treatments with three replications. The treatments included feed supplemented with 0% (control), 1%, 2%, 3%, 4%, and 5% Spirulina platensis meal. Fish were reared for four weeks, and color intensity of the head, body, fins, and tail was assessed periodically. Water quality parameters, including temperature, pH, and dissolved oxygen (DO), were also monitored throughout the experiment. Data were analyzed using analysis of variance (ANOVA) followed by Duncan’s multiple range test. The results showed that dietary supplementation with Spirulina platensis significantly affected body coloration but had no significant effect on the coloration of the head, fins, and tail. The highest body color intensity was observed in fish fed diets containing 3% Spirulina platensis, with an average color score of 56.55 ± 0.59, significantly higher than the control treatment. Water quality remained within suitable ranges for goldfish culture, with temperatures of 23–26°C, pH 7, and DO ranging from 6.7 to 9.9 mg/L. In conclusion, supplementation of 3% Spirulina platensis meal in feed effectively enhances the body coloration of goldfish and can be recommended as a natural pigment source in ornamental fish culture.
EFFECT OF DIFFERENT TYPES OF FEED (Squid, Sea Worms, Trash Fish) ON THE LEVELS OF GONAD MATERNITY AND THE FUNDAMENTAL OF GALAH SHRIMP (Macrobrachium rosenbergii) Alfi Zahrotun Nisa; David Hermawan; Ganjar Adhywirawan
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 6 No. 2 (2023): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v6i2.7828

Abstract

The availability of high-quality broodstock is a key factor in the success of giant freshwater prawn (Macrobrachium rosenbergii) hatchery operations. Broodstock nutrition, particularly the type of natural feed provided, plays an important role in supporting gonadal development and reproductive performance. Therefore, this study aimed to evaluate the effects of different natural feed types on gonad maturation and fecundity of giant freshwater prawn broodstock. The study was conducted using an experimental method with a Completely Randomized Design (CRD) consisting of four treatments: squid (Loligo sp.), sea worms, trash fish, and commercial pellets (control). Female broodstock were reared under controlled conditions, and observations were made on gonad maturity level and fecundity. Gonad maturation was assessed based on the percentage of broodstock reaching Gonad Maturity Stage III (GMS III), while fecundity was determined using the gravimetric method. Water quality parameters, including temperature, dissolved oxygen (DO), and pH, were monitored throughout the experiment. The results showed that different feed types significantly affected gonad maturation and fecundity of giant freshwater prawn broodstock. Squid feed produced the highest percentage of broodstock reaching GMS III (83%), followed by sea worms (67%), trash fish (41%), and pellets (25%). Similarly, the highest fecundity was observed in the squid treatment, reaching 28,846 ± 4,925 eggs per female, compared to 21,120 ± 2,579 eggs in the sea worm treatment, 19,644 ± 6,396 eggs in the trash fish treatment, and 16,768 ± 4,183 eggs in the control treatment. Water quality remained within optimal ranges for broodstock culture. In conclusion, squid is the most effective natural feed for enhancing gonad maturation and fecundity of giant freshwater prawn broodstock, making it a promising dietary component for improving hatchery productivity.

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