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The effects of methallibure on conspecific visual reinforcement, social display frequency, and spawning in the Paradise Fish, Macropodus opercularis (L.) Belontiidae☆

1976; Elsevier BV; Volume: 17; Issue: 1 Linguagem: Inglês

10.1016/0031-9384(76)90268-7

1873-507X

Rachel Davis, Murray D. Mitchell, L. Dolson,

Reproductive biology and impacts on aquatic species

Pretrial intramuscular administration of the antigonadotropin, methallibure suppressed operant responding for conspecific visual stimulation. Four administrations of the drug during an 11 day period did not noticeably impair gametogenesis. Oral administration of methallibure for 5 weeks resulted in a decrease in frequency of lateral display, but not frontal display, in a 10 min trial with a live stimulus male, and a decrease in the gonadosomatic index and fertility but not spawning readiness. The possibility that methallibure disrupts catecholamine synthesis is discussed.