Author:
Fahrudini F.,Yuniartik M.,Muzaki A.,Mahardika K.,Ismi S.,Supii A.
Abstract
Abstract
This study aims to collect data and information of embryonic and larval development on the cross breeding between hybrid Giant Grouper × Potato Grouper (PGGG) male and Tiger Grouper (TG). The body weight of broodfish above 20 kg for male and 4 kg for female. Broodstock selection of Hybrid Giant Grouper × Potato Grouper (PGGG) male can usually be stripped by applying gentle pressure to the abdomen between the pelvic and the vent fins. Induced spawning by mixing sperm and eggs manually. Signs of a mature gonadal female are characterized by an enlarged abdomen, slow movements and tend to tilt, the genital opening increasingly swollen and red in colour. The results show that spawning at night 23.30 with an average egg diameter of 0.85±0.09 mm. The eggs hatch at 15.45 or 16 hours 15 minutes. Hatching rate being 24%-32%.
Reference20 articles.
1. Egg and Larval Development of a New Hybrid Orange-Spotted Grouper Epinephelus coioidesxGiant Grouper E. lanceolatus;Koh;Aquac. Sci,2010
2. Effect of low salinity and fresh water media on growth, survival and BCR in TGGG hybrid grouper (♀ tiger grouper × ♂giant grouper) culture;Wijayanto;AACL Bioflux,2023
3. Natural Spawning, Embryonic and Larval Development of F2 Hybrid Grouper, Tiger Grouper Epinephelus fuscoguttatus × Giant Grouper E. lanceolatus;Ching;Int. Aquat,2018
4. Pematangan Gonad Induk Kerapu Sunu (Plectropomus leopardus) Dengan Hormon LHRH-Analog;Suwirya;J. Ris. Akuakutur,2006
5. Validation of a fish larvae dispersal model with otolith data in the Western Indian Ocean and implications for marine spatial planning in data-poor regions;Crochelet;Ocean Coast. Manag,2013