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This study was to determine the lethal dose 50 (LD 50 ) of CdCl 2 in adult Rhinella arenarum and analyzed the effect of two sublethal doses (0.5 and 5mg/kg) of the xenobiotic in gonads. The 48h LD 50 were 50.0 and 49.8mg/kg for males and females respectively. Alterations in the ovary were evidenced by nuclear pleomorphism and cytoplasmic vacuolization of the oocytes at the...
The present study was carried out to analyze the fertilization-supporting activity of Rhinella arenarum egg-jelly components. Spermatozoa were treated with diffusible factor (DF) constituted by the components released from the jelly coat into deionized water or with full jelly (FJ) containing all the components secreted by the oviductal pars convoluta (PC) during the transit of the oocytes through...
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