Influence of pH on eggs and larvae of silver catfish, <em>Rhamdia quelen</em> (Osteichthyes, Siluriformes)
Abstract
The influence of pH on silver catfish (Rhamdia quelen, Quoy and Gaimard, 1824) eggs and larvae was evaluated in experiments with 6 treatments (pH 4, 5, 6, 7, 8 and 9) in three spawnings. All eggs in pH 4 died. Same results occurred when temperature fell to 17ºC. There was no difference in fertilization rates of spawnings at the same water temperature. In spawning with higher temperature the lowest fertilization rate was registered at pH 6 and 7. Eclosion time was directly proportional to temperature, whilst after eclosion all eggs at pH 5 died. Mouth-opening time was influenced by temperature. Survival rate was influenced by pH in different water temperature conditionsDownloads
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Published
2008-05-09
How to Cite
Ferreira, A. A., Nuñer, A. P. de O., & Esquivel, J. R. (2008). Influence of pH on eggs and larvae of silver catfish, <em>Rhamdia quelen</em> (Osteichthyes, Siluriformes). Acta Scientiarum. Biological Sciences, 23, 477-481. https://doi.org/10.4025/actascibiolsci.v23i0.2705
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Section
Biology Sciences
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2019CiteScore
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