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Induced spawning by LHRHa and pimozide in the Asian catfish Clarias macrocephalus (Gunther)
dc.contributor.author | Tan-Fermin, Josefa D. | |
dc.contributor.author | Emata, Arnil C. | |
dc.date.accessioned | 2013-02-18T09:02:38Z | |
dc.date.available | 2013-02-18T09:02:38Z | |
dc.date.issued | 1993 | |
dc.identifier.citation | Tan-Fermin, J. D., & Emata, A. C. (1993). Induced spawning by LHRHa and pimozide in the Asian catfish Clarias macrocephalus (Gunther). Journal of Applied Ichthyology, 9(2), 89–96. | en |
dc.identifier.issn | 1439-0426 | |
dc.identifier.uri | http://hdl.handle.net/10862/1434 | |
dc.description.abstract | Experiments were conducted to determine the optimum dose of luteinizing hormone-releasing hormone analogue (LHRHa) and pimozide (PIM) injected simultaneously to yield a high ovulation rate and produce sufficient eggs in the Asian catfish Clarias macrocephalus. In June 1990, injection of 0.05 or 0.10 μg LHRHa/g body weight (BW) + 1 μg PIM/g resulted in 100% ovulation, while only 80% of gravid catfish injected 0.025 μg LHRHa + 1 μg PIM/g ovulated. Most of the eggs stripped from 6 out of 8 control fish were not mature. Fertilization and hatching rates of LHRHa + PIM-induced fish (75–90% and 39–51%, respectively) were higher than those of control fish (36–39% and 0–1% respectively). In August and September 1990, at gravid catfish ovulated after injection of 0.05–0.10 μg LHRHa + 1 μg PIM/g BW. However, only 20% of the fish given 0.025 μg LHRHa/g + 1 μg PIM/g BW in August ovulated. No eggs could be striped from any of the control fish in August and September 1990. Techniques developed in this study, showed a simple and effective way of spawning captive catfish, C. macrocephalus. A simultaneous intramuscular injection of 0.05 μg LHRHa + 1 μg PIM/g and stripping of eggs at 16–20 h post-injection have been tested to yield high ovulation, fertilization and hatching rates. | en |
dc.language.iso | en | en |
dc.publisher | Blackwell Publishing | en |
dc.subject | Clarias macrocephalus | en |
dc.title | Induced spawning by LHRHa and pimozide in the Asian catfish Clarias macrocephalus (Gunther) | en |
dc.type | Article | en |
dc.identifier.doi | 10.1111/j.1439-0426.1993.tb00530.x | |
dc.citation.volume | 9 | |
dc.citation.issue | 2 | |
dc.citation.spage | 89 | |
dc.citation.epage | 96 | |
dc.citation.journalTitle | Journal of Applied Ichthyology | en |
seafdecaqd.library.callnumber | VF SJ 0440 | |
seafdecaqd.databank.controlnumber | 1993-12 | |
dc.subject.asfa | fish culture | en |
dc.subject.asfa | reproduction | en |
dc.subject.asfa | reproductive cycle | en |
dc.subject.asfa | sex hormones | en |
dc.subject.asfa | spawning | en |
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Journal Articles [1222]
These papers were contributed by Department staff to various national and international journals.