Estimativa do tamanho da primeira maturação sexual da rã - touro, Rana catesbeiana, no sistema Anfigranja de criação intensiva
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Data
1998-05-01
Autores
Lima, Samuel Lopes
Costa, Cristina Lúcia Sant'ana
Agostinho, Cláudio Ângelo [UNESP]
Andrade, Dálcio Ricardo
Pereira Filho, Hélio P.
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Resumo
The objective of this research was to study the basic aspects of bullfrog reproduction in Anfigranja system from June 1989 to July 1990. For the 1493 animals involved in this experiment (657 males and 836 females) biometrical data were obtained (weight, length and tympanum diameter) and developmental stages of gonads were determined. Female sizes at first maturation were 10,33 cm and 109,78 g and for males it was around 8,09 cm; all males above 45 g were already in the maturation process. The relationship between tympanum diameter and body length (RTC) was considered a good index for male maturation.
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Bullfrog reproduction in captivity, Size at first maturation
Como citar
Revista Brasileira de Zootecnia, v. 27, n. 3, p. 416-420, 1998.