Jurnal Perikanan Terapan

EFEKTIVITAS PERSILANGAN IKAN MOLLY BALON SUNKIST (Poecilia sphenops) DENGAN MOLLY MARBLE (Poecilia sphenops) TERHADAP VARIASI WARNA

Joni Setiawan — 2024-11-29

The Marble Molly fish (Poecilia sphenops) and the Sunkist Balloon Molly (Poecilia sphenops) are one of the fish that are popular in Indonesia. It is hoped that crossing sunkist mollies and marble mollies will produce unique colors and new patterns, with diverse and unique colors so that public interest will once again be high in keeping ornamental fish, especially mollies. The methods used start from preparing tools and materials, preparing spawning tanks and larval rearing tanks, selecting mature gonad male and female parents with the characteristics of the male having a gonopodium on his stomach while the female does not have it with the age of the male and female being at least 4 months before they can be spawned. The cross is carried out with a ratio of males and females, namely 5 males and 10 females in each spawning tank, there are 6 spawning tanks with 3 tanks representing the cross between a marbled male and a Sunkis female and another 3 tanks with a Sunkist male and a marbled female, then the best data is taken from the 2nd following treatment. The results obtained were the emergence of 3 color variations and 5 pattern variations with unique and varied colors and patterns.

MATURASI INDUK UDANG VANNAMEI (Litopenaeus vannamei) DI BIBIT UNGGUL KALIANDA LAMPUNG SELATAN

Rahmadi — 2024-11-29

The availability of broodstock in vannamei shrimp cultivation, especially in hatchery activities, is generally the main requirement. The lack of availability of good quality broodstock is an obstacle in shrimp hatchery activities. One of them is a decrease in egg hatchability which can affect the number and quality of Nauplius produced. Maturation is the initial stage in the process of prospective parent vannamei shrimp becoming mature gonads. Apart from that, the aim of maturation is to maximize growth into adult parent shrimp so that prospective parent vannamei shrimp are ready for spawning. Data collection through observation, documentation, and direct participation in the field in parent maturation activities. The average fecundity produced by each parent during the research ranged from 150-250 thousand eggs. Meanwhile the Hatching Rate was 78.60-79.91%, in December it was 68.37-72.71%. Fertilization Rate (FR) 60-75, Survival of vannamei shrimp in November 91.5%. December 89.5%. The results of water quality measurements, the temperature in the broodstock maturation rearing tank at PT Bibit Unggul Kalianda is around 28-30 ^oC and the salinity is around 30 ppt.

MASKULINISASI IKAN NILA MERAH (Oreochromis sp.) MENGGUNAKAN PROPOLIS DENGAN METODE PERENDAMAN LARVA DAN PAKAN

Pindo Witoko — 2024-11-29

Red tilapia (Oreochromis sp.) is the result of a cross between tilapia O. mozambicus and fish. tilapia O. niloticus. The advantages of tilapia are its relatively fast growth and relatively easy maintenance, as well as having a significant tolerance to environmental conditions. The growth rate of male fish is higher than that of females. Hormonal stimulants for male sexual orientation can be derived from natural ingredients, namely propolis. Propolis has advantages, including being safe for consumption, relatively inexpensive, and environmentally friendly. Treatment of propolis through immersion and artificial feed on red tilapia (Oreochromis sp.) seeds at a dose of 0.1 ml/L and 2.7 ml/kg of feed resulted in a male sex percentage of 85%, SR 100%, FCR treatment A (1 .43) and treatment B (1.34).

PEMIJAHAN DAN PENDEDERAN IKAN (Channa asiatica) DI AKUARIUM SPAWNING AND BREEDING OF FISH (Channa asiatica) IN AN AQUARIUM

Rahmadi — 2024-11-29

Ikan Channa Asiatica merupakan ikan hias air tawar yang memiliki ukuran sedang hingga besar. Channa asiatica hidup di habitat rawa-rawa, aliran sungai berarus kecil bahkan mereka bisa ditemukan di genangan-genangan air di dalam hutan. Penelitian ini dilakukan dengan melakukan pemijahan ikan Channa asiatica di akuarium. Teknik pemijahan merupakan proses perkawinan yang terjadi antara indukan jantan dan indukan betina yang mengeluarkan sel sperma dan sel telur dan terjadi diluar tubuh ikan (eksternal). Tujuan dari penelitian ini adalah untuk mengetahui teknik pemijahan pada ikan Channa asiatica atau gabus hias dan mengetahui bahwa ikan jenis Channa asiatica dapat memijah dalam akuarium. Berdasarkan penelitian Pemijahan Ikan Channa asiatica dapat dilakukan di akuarium dengan cara telur dipisahkan pada akuarium yang berbeda dengan indukan untuk menghindari indukan ikan Channa asiatica memakan telur serta mendapat SR atau angka kehidupan yang lebih baik. Pemijahan Ikan Channa asiatica, telur dapat menetas dalam kurung waktu 24 jam dengan menghasilkan fekunditas 857 butir telur, derajat pembuahan (FR) 76,07%, derajat penetasan (HR) 65,18% dan tingkat kelangsungan hidup (SR) sebesar 74,82%. Kualitas air yang diukur selama penelitian antara lain suhu 27-28^oC, pH 7 dan DO 4,3-6,3 mg.L-l dimana semua parameter masih dalam kisaran optimal untuk pemeliharaan ikan channa asiatica.

MASKULINISASI IKAN NILA MERAH (Oreochromis sp.) MENGGUNAKAN PROPOLIS YANG DICAMPUR KE DALAM PAKAN BUATAN

Pindo Witoko — 2024-11-29

Masculinization is one of the efforts to increase the number of male fish by giving treatment to direct the fish to become male. Masculinization was carried out using Propolis Melia at a treatment dose of 2.7 mL/kg feed with 3 replications. The goal is to produce a male sex ratio and the survival of tilapia. With maintenance for 4 weeks with at-satiation feeding. The results of the percentage of male sex with the treatment dose used were 2.7 mL/kg of feed for repetition 1 (80%), repetition 2 (80%) and repetition 3 (85%) and survival rate 100%.