An Evaluation of a Leuteinizing Hormone-Releasing Hormone Analog to Induce Spawning of Channel Catfish Ictalurus punctatus |
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| Authors: | Robert L. Busch James A. Steeby |
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| Affiliation: | Mississippi Agricultural and Forestry Experiment Station, Delta Branch Experiment Station, P.O. Box 197. Stoneville, Mississippi 38776 USA |
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| Abstract: | The leuteinizing hormone-releasing hormone (LH-RH) analog, DAla6DesGly10 LH-RH-ethyl amide, delivered by intraperitoneal or intracranial injection was an effective agent for the induced spawning of channel catfish ( Icrulurus punctatus ) held in aquaria. A daily dose of 100 μg LH-RH analog (LH-RHa) per kg fish body weight was recommended as the dosage schedule of choice, but daily doses as low as 1 cg LH-RHa per kg fish body weight induced spawning of channel catfish. LH-RHa was as good or better than human chorionic gonadotropin or carp pituitary to induce spawning of channel catfish in aquaria. Sham-injected (control) channel caffish spawned in this study contradicting observations in earlier studies. |
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