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A study on spawning of bull frogs (Rana catesbeiana) using induced mating

Revista Brasileira de Zootecnia 27(2): 216-223

A study on spawning of bull frogs (Rana catesbeiana) using induced mating

60 male and female bull frogs were injected with a total dose of 1, 3, 5 or 7 mg crude pituitary extract (CHE)/kg body weight, administered at intervals of 6, 12 or 18 h. The incidence of spontaneous spawning was 25-100% in treated frogs vs. 0% for untreated controls, the best results being obtained after treatment with 5.5 or 7.7 mg CHE at intervals of 6 or 18 h.

Accession: 003027883

Related references

Howard, R.D., 1978: The evolution of mating strategies in bull frogs rana catesbeiana. Variation in reproductive success within and between the sexes was investigated for 2 yr in bullfrogs, R. catesbeiana. Number of successful matings/male ranged from 0-4/yr; number of successful matings/female ranged from 1-2/yr. The polygynous mat...

Ribeiro Filho, O.P.nto; Lima, S.L.pes; Andrade, D.R.cardo De; Seixas Filho, J.T.ixeira De, 1998: Study of bull-frog spawning, Rana catesbeiana, using induced reproduction. The objective of this work was to define and standardize a bull-frog, Rana catesbeiana, Shaw (1802), spawning technique for reproduction by means of the application of a crude hypophyseal extract (CHE). A 15-day period involving 60 couples, in the...

Harvey C.B.; Moore O.; Lomax L., 1981: Passive avoidance learning in bull frogs rana catesbeiana grass frogs rana pipiens and toads bufo americanus. A passive operant-avoidance procedure was employed to condition 12 bullfrogs and 6 grass frogs to inhibit the righting-reflex. To avoid an electric shock of .8 mA, both species, when flipped, remained frozen rather than showing the short-latency r...

Mcmahon E.M.Jr; W., 1968: Rna synthesis during thyroxin hormone induced metamorphosis in bull frogs rana catesbeiana inst radioautography. Biochemical & Biophysical Research Communications 31(2): 176-181

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Hillyard S.D.; Zeiske W.; Van Driessche W., 1982: A fluctuation analysis study of the development of amiloride sensitive sodium ion transport in the skin of larval bull frogs rana catesbeiana. In the presence of the Na+-channel blocker amiloride, the short-circuit current across the skins of bullfrog tadpoles in metamorphic stages XIX-XXIV was subjected to fluctuation analysis. The resulting power spectra contained a Lorentzian componen...

Sawyer W.H., 1974: Effects of mesotocin on bull frogs rana catesbeiana. American Zoologist: 1244

Howard R.D., 1981: Sexual dimorphism in bull frogs rana catesbeiana. Data on body size, age/size at sexual maturity, and adult survi-al were obtained between 1975 and 1978 for a population of bullfrogs, R. catesbeiana, at the E. S. George Reserve of the University of Michigan, USA. Both males and females continued...

Gouchi H., 1982: Ultrastructure of eosinophil granules of bull frogs rana catesbeiana. Eosinophils in the bone marrow and the peripheral blood of bullfrogs, V. catesbeiana, were studied by EM. Granules of promyelocytes and myelocytes appeared in various forms and densities of the matrix, with the small granules containing residues o...

Phillips K.A.; Boone G.C., 1976: Occurrence of yellow bull frogs rana catesbeiana in central pennsylvania usa. Proceedings of the Pennsylvania Academy of Science 50(2): 163-164