| Issue |
BIO Web Conf.
Volume 160, 2025
IV International Conference on Improving Energy Efficiency, Environmental Safety and Sustainable Development in Agriculture (EESTE2024)
|
|
|---|---|---|
| Article Number | 02015 | |
| Number of page(s) | 8 | |
| Section | Environmental Safety and Biodiversity | |
| DOI | https://doi.org/10.1051/bioconf/202516002015 | |
| Published online | 12 February 2025 | |
The influence of water temperature and the pH on controlled spawning and the hatchability of Cyprinus carpio (Linnaeus, 1758), in the conditions of the Republic of Iraq
1 Astrakhan State Technical University, 414056, Astrakhan, Russia
2 Astrakhan State University named after V.N. Tatishchev, 414025, Astrakhan, Russia
* Corresponding author: loaymohamed577@gmail.com
Water temperature and pH are considered the most important criteria for aquatic hosts of aquatic organisms, which have a significant impact on the maturation of the gonads, reproduction, growth and vital activity in general, in addition to some other environmental factors. Therefore, this study aims to discover the effect of high water temperature in addition to changing the pH on fertilized eggs, embryo growth, hatching rate and larval survival rate after hatching for 85 days, and to research the ideal water temperature and pH for egg hatching and growth of Cyprinus carp larvae. It was found that the higher the temperature that is above 25°C and the pH that is higher than 7.5 or lower than 7.3, the lower the hatching rate and the higher the larval mortality rate. The experiment showed that the fertilization rate reached 97.81 at an average water temperature of 25°C, a pH level of 7.5 and an average incubation period of 75 hours, while the specific growth rate of larvae on the first day was 8.25% and the survival rate was 96%. Therefore, it is recommended to maintain the water temperature at 22-25°C and pH level at 7.3-7.5 for incubating eggs and raising Cyprinus carp fry.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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