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International Journal of Zoology and Applied Biosciences Research Article

Optimal environment for rearing Hoplobatrachus occipitalis tadpoles and evolution of their mouth cage

G. Keita, F. N.Guessan, K.C. Djirieoulou, N.E. Assemian

Year : 2025 | Volume: 10 | Issue: 4 | Pages: 1-11

doi: https://doi.org/10.55126/ijzab.2025.v10.i04.001

Received on: 25/05/2025

Revised on: 08/06/2025

Accepted on: 27/06/2025

Published on: 31/07/2025

  • G. Keita, F. N.Guessan, K.C. Djirieoulou, N.E. Assemian( 2025).

    Optimal environment for rearing Hoplobatrachus occipitalis tadpoles and evolution of their mouth cage

    . International Journal of Zoology and Applied Biosciences, 10( 4), 1-11.

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Abstract

Tadpoles or frog larvae are the first stage of evolution. Control of their growth environment is therefore important for rearing. In this context, tadpole rearing trials for the frog Hoplobatrachus occipitalis were carried out in two environments, in concrete basins and in ponds, and the development of their mouth cage was monitored. To this end, 12 mosquito net enclosures were built in ponds and 12 concrete basins on land. To feed these two systems, seven waves of tadpoles were harvested progressively at different locations on the APDRACI fish farm at the start of the rainy season. The main results show that, in terms of physico-chemical parameters, the pH and temperature of the water were slightly higher in the concrete basins. Survival rates and morphological parameters are much higher on average in concrete ponds than in pond enclosures. As for the mouth cage, it begins with two rows of relatively harmless denticles and ends with sharp, pointed teeth. Ultimately, these trials will enable future raniculturists to be more efficient and, above all, to limit tadpole mortality rates.

Keywords

Tadpoles, Hoplobatrachus occipitalis, Structure, Mouth cage.

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    © The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.