Development of Mouth Opening and Digestive Enzyme Activities in Sheatfish (Ompok hypopthalmus) Larvae

Tang, Usman M; Alawi, Hamdan; Masjudi, Heri; Fauzi, Muhammad

doi:10.37622/ijoo/14.1.2020.1-8

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…The hatching rate was measured after 20 hours approximately (at an incubation temperature of 28-30°C) using the formula (TE/TL) x 100%, where TE is the total of eggs, and TL is the total of larvae. Measurements of larvae mouth opening width in one dah under a microscope (magnification 60x, n = 20 fish) and calculating with the equation √(2AB), where AB represents upper jaw length (Tang et al 2020). One day after hatching, 100 larvae were transferred into 1,000 ml beaker glass, left undisturbed, and starved until they died to determine SAI.…”

Section: √(D X D)mentioning

confidence: 99%

Some Hatchery Parameters of Three Species of Groupers: Tiger Grouper (Epinephelus fuscoguttatus), Humpback Grouper (Cromileptes altivelis), and Leopard Coral Grouper (Plectropomus leopardus)

Ismi¹,

Budi

2022

HAYATI J Biosci

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Three species of groupers, including tiger grouper (Epinephelus fuscoguttatus), humpback grouper (Cromileptes altivelis), and leopard coral grouper (Plectropomus leopardus), have been successfully cultivated. However, the constraints on larviculture that have been described still arise in the hatchery. This study compares several hatchery parameters in these three grouper species representing three different genera (Epinephelus, Cromileptes, and Plectropomus). The egg incubation and larval rearing were carried out in a concrete tank (3 x 3 x 1.2 m3) filled with 6-7 m3 seawater. Eggs were stocked with a density of 100,000 eggs/tank. The grouper larvae were reared until they became juvenile. The eggs were incubated until they were hatched in the same container and media as larval rearing. Larvae were reared until 60 dah (days after hatching), and data were taken from the rearing for three cycle's larval culture. Management of grouper larval rearing follows the Good Fish Hatchery Method (Cara Pembenihan Ikan yang Baik/CPIB) based on Indonesian National Standard (Standar Nasional Indonesia/SNI). The experimental parameters were egg diameter, hatching rate, larvae mouth opening width, survival activity index (SAI), larvae development, and total body length growth. The several hatchery parameters in three grouper fish species are significantly different. The tiger grouper has the best larval performance.

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Section: √(D X D)mentioning

confidence: 99%

Some Hatchery Parameters of Three Species of Groupers: Tiger Grouper (Epinephelus fuscoguttatus), Humpback Grouper (Cromileptes altivelis), and Leopard Coral Grouper (Plectropomus leopardus)

Ismi¹,

Budi

2022

HAYATI J Biosci

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PENGARUH PAKAN EKSOGEN AWAL TERHADAP AKTIVITAS ENZIM PENCERNAAN DAN PERTUMBUHAN LARVA Epinephelus fuscoguttatus (Forsskal, 1775)

Melianawati

Pratiwi

2022

J. Ilmu dan Teknologi Kelautan Tropis

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Pemberian pakan eksogen awal merupakan hal yang penting dilakukan dalam kegiatan pembenihan ikan laut, termasuk ikan kerapu macan (Epinephelus fuscoguttatus). Peralihan dari pakan endogen ke pakan eksogen merupakan fase kritis bagi kelangsungan hidup larva ikan kerapu macan pada stadia awal. Keberadaan pakan eksogen dapat berpengaruh terhadap aktivitas enzim pencernaan dan pertumbuhan larva. Penelitian ini bertujuan untuk mengevaluasi peranan pakan eksogen awal terhadap aktivitas enzim pencernaan dan pertumbuhan larva stadia awal. Dua perlakuan yang diujicobakan adalah larva diberi pakan eksogen dan larva tidak diberi pakan eksogen. Pakan eksogen awal yang diberikan berupa zooplankton rotifer Brachionus rotundiformis. Parameter yang diamati adalah aktivitas enzim pencernaan yang meliputi protease, amilase dan lipase; penyerapan pakan endogen; dan pertumbuhan larva yang meliputi panjang total dan bobot tubuh. Hasil penelitian menunjukkan bahwa aktivitas enzim pencernaan larva umur 3 hari yang tidak diberi pakan awal adalah lebih tinggi dibandingkan dengan larva yang diberi pakan eksogen awal. Pakan endogen habis terserap pada larva umur 3 hari. Panjang total larva pada kedua perlakuan adalah cenderung sama, sedangkan bobot tubuh pada larva yang diberi pakan awal lebih besar dibandingkan yang tidak diberi pakan. Hasil penelitian ini menunjukkan bahwa pemberian pakan eksogen awal berpengaruh terhadap aktivitas enzim pencernaan dan pertumbuhan larva ikan kerapu macan pada stadia awal.

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Development of Mouth Opening and Digestive Enzyme Activities in Sheatfish (Ompok hypopthalmus) Larvae

Cited by 2 publications

References 11 publications

Some Hatchery Parameters of Three Species of Groupers: Tiger Grouper (Epinephelus fuscoguttatus), Humpback Grouper (Cromileptes altivelis), and Leopard Coral Grouper (Plectropomus leopardus)

Some Hatchery Parameters of Three Species of Groupers: Tiger Grouper (Epinephelus fuscoguttatus), Humpback Grouper (Cromileptes altivelis), and Leopard Coral Grouper (Plectropomus leopardus)

PENGARUH PAKAN EKSOGEN AWAL TERHADAP AKTIVITAS ENZIM PENCERNAAN DAN PERTUMBUHAN LARVA Epinephelus fuscoguttatus (Forsskal, 1775)

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