From spawn to survival: Decoding the hydraulic conditions for successful silver carp egg incubation

Natural rivers exhibit complex and dynamic flow conditions that significantly impact the survival and development of semi-buoyant fish eggs. This study investigated the effects of flow velocities and turbulence on the semi-buoyant fish eggs in running water, using silver carp eggs as a representative species. Experiments conducted in a race-track flume revealed that moderate flow conditions (0.5 m/s) yielded the highest hatching rates, while excessive velocities (1.1 m/s) led to complete mortality at the blastula stage. Mild turbulence benefited egg incubation, but extreme turbulence reduced hatching rates and increased larval deformation. These findings demonstrate a clear relationship between hydraulic conditions and successful egg development, suggesting that optimal spawning and hatching conditions are differ. The results provide a foundation for evaluating suitable hydraulic conditions for semi-buoyant fish egg hatching in river habitats and offer insights into the potential impact...,
Collection of silver carp eggs
The Animal Care and Use Committee of Chongqing Jiaotong University granted us permission to possess silver carp (Hypophthalmichthys molitrix) eggs and larvae in a laboratory setting for research purposes only (Permit No. Wang-20220325-002). The silver carp eggs were obtained from Yongchuan Shuihua Fishery Association, a fishery farm located in Chongqing, (105.9°E, 29.263°N), from May to July in 2022 and 2023.
Design of Race-track flume
A Race-track Flume (RTF) was designed for this study to investigate silver carp egg development under controlled flow conditions. The FTR, depicted in Figure. 1, consists of three main components aligned at the top: an incubation channel, a buffer channel, and an overflowing weir.
The incubation channel, serving as the primary experimental area, measures 0.20 m in width and 0.40 m in height, with an operational water depth of 0.30 m. Adjacent to this, the buffer channel has the same width but reduced height of 0.20 m. This ..., , # From spawn to survival: Decoding the hydraulic conditions for successful silver carp egg incubation

**Dataset Description**

This dataset contains experimental data examining the effects of flow velocities and turbulence on the development and survival of silver carp (*Hypophthalmichthys molitrix*) eggs. The experiments were conducted in an annular flume to investigate how different hydraulic conditions impact egg incubation, hatching rates, and larval development.

**Experimental Methods**

* Experiments conducted in a custom-designed annular flume
* Flow velocities ranging from 0.3 to 1.1 m/s
* Turbulence intensities varied at constant flow velocity (0.7 m/s)
* Water temperature maintained at 28±0.5°C
* Continuous monitoring of dissolved oxygen (minimum 7 mg/L)

**Data Files and Structure**

The dataset (data.xlsx) contains 8 worksheets:

1. **Fig 2**: Measurement results of flow characteristics in the annual incubation channel
2. **Fig 3**: Flow turbulence intensity calculation re...