Abstract
An investigation was conducted under laboratory conditions to analyse the mechanisms of prey capture by tadpoles, Bufo regularis Reuss, and to determine the minimum size at which the predation pressure by tadpoles on the larvae of African catfish, Heterobranchus longifilis Val., becomes insignificant. It was observed that the tadpoles fed on the larvae by suction without any specific capture strategies regardless of their sizes. The predation pressure was very high (100% mortality) during yolk-sac absorption and reduced gradually as the larvae increased in size. Based on these results, it was suggested to transfer the fry into nursing ponds only when they have reached a size greater than 10 mm TL (5–7 days) so as to avoid their predation during the primary nursing phase.
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