Hormone induced spawning (HCG), and embryonic and larval development of the leopard grouper, Mycteroperca rosacea (Streets, 1877)
| Autor: | V Gracia-López, J Rodríguez-Romero, JM Pérez-Ramírez |
|---|---|
| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Ciencias Marinas, Vol 30, Iss 2 (2004) |
| Druh dokumentu: | article |
| ISSN: | 0185-3880 2395-9053 |
| DOI: | 10.7773/cm.v30i2.246 |
| Popis: | Induced spawning of two wild females of the leopard grouper, Mycteroperca rosacea, was obtained using Human Chorionic Gonadotropin (HCG) supplied in two dosages: a first injection of 1000 IU/kg and a second of 500 IU/kg, 24 h apart. Of the four treated females, two had a positive spawning response, releasing approximately 40,000 eggs/fish. These were fertilized with mature male sperm. The fertilization rate obtained for each female was 10% and 0%. Complete embryonic development, and the morphology of eggs and larvae are described until the first feeding. Eggs were spherical, buoyant and transparent, with a diameter of 872.8 ±15.4 ∞m (ranging from 850.4 to 912.5 ∞m) and an oil droplet diameter of 177.3 ± 7.0 ∞m. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|