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April 12, 2026SHILAP Revista de lepidopterologíaOpen Access

Delayed fertilization and short-term storage methods affects the viability of stripped eggs of African catfish Clarias gariepinus

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Authors

VOVictor Tosin OkomodaSOS.O. OlufeagbaMTMfanega Frank Tarbee

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Overview

Observational studies reveal egg viability declines beyond 4 hours post-stripping in African catfish, indicating optimal fertilization timing.

Key Points

  • The study aims to determine the optimal delay period and short-term storage methods that affect the viability of stripped C. gariepinus eggs.
  • Obtained eggs from broodstock induced using ovaprim® hormone.
  • Exposed eggs to atmospheric oxygen for varying hours post-stripping.
  • Applied different storage methods: refrigeration, addition of extender, and aeration for egg storage.
  • Egg size reduced as exposure time to atmospheric oxygen increased.
  • Fertilization and hatchability were optimal up to 4 hours post-stripping; beyond this, viability dropped to zero.
  • No significant difference in biometric parameters of hatched fry across treatments.

Cite This Study

Okomoda et al. (2025) studied this question.

synapsesocial.com/papers/69db35be4fe01fead37c44e5https://doi.org/10.36253/caryologia-3424
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Investigation into the Impacts of Varied Batches of Stripped Eggs on the Reproductive Success of Clarias gariepinus2024 · 2 citations
  2. 2Effect of Different Ages of African catfish (Clarias gariepinus) Broodstock on Reproductive Performance and Fries Production2024 · 6 citations
  3. 3Effects of Multiple Batches of Stripped Eggs on the Reproductive Performances of Heterobranchus longifilis2024 · 2 citations
  4. 4Effect of pituitary gland from spent and unspent female brood fish on the spawning performance of African catfish (<i>Clarias gariepinus</i>)2024
  5. 5Influence of Brooders’ Age on the Reproductive Performance of African catfish (Clarias gariepinus Burchell, 1822) Reared in Tank System2025