Version 1
: Received: 14 March 2023 / Approved: 14 March 2023 / Online: 14 March 2023 (14:18:30 CET)
How to cite:
Kong, X.; He, F.; Li, H. The Effect of pH Value on Fertilized Eggs, Larva Fish and Juvenile Fish of Takifugu obscurus. Preprints2023, 2023030261. https://doi.org/10.20944/preprints202303.0261.v1
Kong, X.; He, F.; Li, H. The Effect of pH Value on Fertilized Eggs, Larva Fish and Juvenile Fish of Takifugu obscurus. Preprints 2023, 2023030261. https://doi.org/10.20944/preprints202303.0261.v1
Kong, X.; He, F.; Li, H. The Effect of pH Value on Fertilized Eggs, Larva Fish and Juvenile Fish of Takifugu obscurus. Preprints2023, 2023030261. https://doi.org/10.20944/preprints202303.0261.v1
APA Style
Kong, X., He, F., & Li, H. (2023). The Effect of pH Value on Fertilized Eggs, Larva Fish and Juvenile Fish of <em>Takifugu obscurus</em>. Preprints. https://doi.org/10.20944/preprints202303.0261.v1
Chicago/Turabian Style
Kong, X., Feng He and Haoshuai Li. 2023 "The Effect of pH Value on Fertilized Eggs, Larva Fish and Juvenile Fish of <em>Takifugu obscurus</em>" Preprints. https://doi.org/10.20944/preprints202303.0261.v1
Abstract
PH value is one of the most significant ecological factors affecting the survival and growth of aquatic organisms. But the effect and tolerance of pH value on many aquatic species are still unknown. This study mainly investigated the effects of pH value on the hatching rate of eggs, the adaptability of newly hatched larva fish and the survival of 3-months-old juvenile fish of Takifugu obscurus. Water pH values can cause a great impact on Takifugu obscurus lives, when the fertilized eggs of Takifugu obscurus were incubated at pH 5.0, 6.0, 7.0, 8.0, 8.3 (control group), 9.0, 10.0 and 11.0 respectively. Under the pH of 5.0, 6.0, 10.0 and 11.0, the hatching rate and speed is greatly reduced and the deformity rate of hatching larvae is greatly increased; When the hatch-pH value was 6.0, the acid adaption of hatched larvae was significantly enhanced, but alkali adaptation was weakened; Under the condition of pH gradient of 6.0, 6.4, 6.8, 7.0, 8.0, 8.3, 9.0, 10.0, 10.2, 10.5, 11.0 and 12.0, survival time and survival rate of juvenile fish show a significant difference. Especially when the pH value was 6.0 and 12.0, juvenile fish die immediately after swimming quickly. Within 24 h, half of the fish died at the pH of 6.4 and 10.3, and within 48 h, half died at the pH of 7.1 and 9.9. In addition, the gradual pH value group in which the pH value gradually decreased or increased had stronger acid-base adaptability and a higher survival rate than the acute experimental group. The above results show the relationship between pH value and survival of Takifugu obscurus, which can provide more reference for the introduction of Takifugu obscurus into saline-alkali land in the future. Additionally, the incubated pH value can influence the pH tolerance of Takifugu obscurus, which can be applied to the breed improvement into an appropriate water environment.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
